mirror of
https://github.com/krahets/hello-algo.git
synced 2026-08-15 21:20:58 +00:00
build
This commit is contained in:
@@ -22,67 +22,175 @@ comments: true
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=== "Python"
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```python title="binary_search_edge.py"
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[class]{}-[func]{binary_search_left_edge}
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def binary_search_left_edge(nums: list[int], target: int) -> int:
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"""二分查找最左一个 target"""
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# 等价于查找 target 的插入点
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i = binary_search_insertion(nums, target)
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# 未找到 target ,返回 -1
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if i == len(nums) or nums[i] != target:
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return -1
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# 找到 target ,返回索引 i
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return i
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```
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=== "C++"
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```cpp title="binary_search_edge.cpp"
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[class]{}-[func]{binarySearchLeftEdge}
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/* 二分查找最左一个 target */
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int binarySearchLeftEdge(vector<int> &nums, int target) {
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// 等价于查找 target 的插入点
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int i = binarySearchInsertion(nums, target);
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// 未找到 target ,返回 -1
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if (i == nums.size() || nums[i] != target) {
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return -1;
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}
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// 找到 target ,返回索引 i
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return i;
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}
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```
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=== "Java"
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```java title="binary_search_edge.java"
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[class]{binary_search_edge}-[func]{binarySearchLeftEdge}
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/* 二分查找最左一个 target */
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int binarySearchLeftEdge(int[] nums, int target) {
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// 等价于查找 target 的插入点
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int i = binary_search_insertion.binarySearchInsertion(nums, target);
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// 未找到 target ,返回 -1
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if (i == nums.length || nums[i] != target) {
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return -1;
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}
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// 找到 target ,返回索引 i
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return i;
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}
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```
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=== "C#"
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```csharp title="binary_search_edge.cs"
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[class]{binary_search_edge}-[func]{binarySearchLeftEdge}
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/* 二分查找最左一个 target */
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int binarySearchLeftEdge(int[] nums, int target) {
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// 等价于查找 target 的插入点
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int i = binary_search_insertion.binarySearchInsertion(nums, target);
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// 未找到 target ,返回 -1
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if (i == nums.Length || nums[i] != target) {
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return -1;
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}
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// 找到 target ,返回索引 i
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return i;
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}
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```
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=== "Go"
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```go title="binary_search_edge.go"
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[class]{}-[func]{binarySearchLeftEdge}
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/* 二分查找最左一个 target */
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func binarySearchLeftEdge(nums []int, target int) int {
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// 等价于查找 target 的插入点
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i := binarySearchInsertion(nums, target)
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// 未找到 target ,返回 -1
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if i == len(nums) || nums[i] != target {
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return -1
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}
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// 找到 target ,返回索引 i
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return i
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}
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```
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=== "Swift"
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```swift title="binary_search_edge.swift"
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[class]{}-[func]{binarySearchLeftEdge}
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/* 二分查找最左一个 target */
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func binarySearchLeftEdge(nums: [Int], target: Int) -> Int {
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// 等价于查找 target 的插入点
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let i = binarySearchInsertion(nums: nums, target: target)
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// 未找到 target ,返回 -1
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if i == nums.count || nums[i] != target {
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return -1
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}
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// 找到 target ,返回索引 i
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return i
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}
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```
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=== "JS"
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```javascript title="binary_search_edge.js"
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[class]{}-[func]{binarySearchLeftEdge}
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/* 二分查找最左一个 target */
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function binarySearchLeftEdge(nums, target) {
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// 等价于查找 target 的插入点
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const i = binarySearchInsertion(nums, target);
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// 未找到 target ,返回 -1
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if (i === nums.length || nums[i] !== target) {
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return -1;
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}
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// 找到 target ,返回索引 i
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return i;
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}
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```
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=== "TS"
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```typescript title="binary_search_edge.ts"
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[class]{}-[func]{binarySearchLeftEdge}
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/* 二分查找最左一个 target */
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function binarySearchLeftEdge(nums: Array<number>, target: number): number {
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// 等价于查找 target 的插入点
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const i = binarySearchInsertion(nums, target);
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// 未找到 target ,返回 -1
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if (i === nums.length || nums[i] !== target) {
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return -1;
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}
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// 找到 target ,返回索引 i
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return i;
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}
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```
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=== "Dart"
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```dart title="binary_search_edge.dart"
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[class]{}-[func]{binarySearchLeftEdge}
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/* 二分查找最左一个 target */
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int binarySearchLeftEdge(List<int> nums, int target) {
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// 等价于查找 target 的插入点
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int i = binarySearchInsertion(nums, target);
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// 未找到 target ,返回 -1
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if (i == nums.length || nums[i] != target) {
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return -1;
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}
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// 找到 target ,返回索引 i
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return i;
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}
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```
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=== "Rust"
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```rust title="binary_search_edge.rs"
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[class]{}-[func]{binary_search_left_edge}
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/* 二分查找最左一个 target */
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fn binary_search_left_edge(nums: &[i32], target: i32) -> i32 {
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// 等价于查找 target 的插入点
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let i = binary_search_insertion(nums, target);
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// 未找到 target ,返回 -1
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if i == nums.len() as i32 || nums[i as usize] != target {
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return -1;
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}
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// 找到 target ,返回索引 i
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i
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}
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```
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=== "C"
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```c title="binary_search_edge.c"
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[class]{}-[func]{binarySearchLeftEdge}
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/* 二分查找最左一个 target */
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int binarySearchLeftEdge(int *nums, int numSize, int target) {
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// 等价于查找 target 的插入点
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int i = binarySearchInsertion(nums, numSize, target);
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// 未找到 target ,返回 -1
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if (i == numSize || nums[i] != target) {
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return -1;
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}
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// 找到 target ,返回索引 i
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return i;
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}
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```
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=== "Zig"
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@@ -112,67 +220,197 @@ comments: true
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=== "Python"
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```python title="binary_search_edge.py"
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[class]{}-[func]{binary_search_right_edge}
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def binary_search_right_edge(nums: list[int], target: int) -> int:
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"""二分查找最右一个 target"""
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# 转化为查找最左一个 target + 1
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i = binary_search_insertion(nums, target + 1)
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# j 指向最右一个 target ,i 指向首个大于 target 的元素
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j = i - 1
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# 未找到 target ,返回 -1
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if j == -1 or nums[j] != target:
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return -1
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# 找到 target ,返回索引 j
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return j
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```
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=== "C++"
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```cpp title="binary_search_edge.cpp"
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[class]{}-[func]{binarySearchRightEdge}
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/* 二分查找最右一个 target */
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int binarySearchRightEdge(vector<int> &nums, int target) {
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// 转化为查找最左一个 target + 1
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int i = binarySearchInsertion(nums, target + 1);
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// j 指向最右一个 target ,i 指向首个大于 target 的元素
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int j = i - 1;
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// 未找到 target ,返回 -1
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if (j == -1 || nums[j] != target) {
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return -1;
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}
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// 找到 target ,返回索引 j
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return j;
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}
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```
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=== "Java"
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```java title="binary_search_edge.java"
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[class]{binary_search_edge}-[func]{binarySearchRightEdge}
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/* 二分查找最右一个 target */
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int binarySearchRightEdge(int[] nums, int target) {
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// 转化为查找最左一个 target + 1
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int i = binary_search_insertion.binarySearchInsertion(nums, target + 1);
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// j 指向最右一个 target ,i 指向首个大于 target 的元素
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int j = i - 1;
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// 未找到 target ,返回 -1
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if (j == -1 || nums[j] != target) {
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return -1;
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}
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// 找到 target ,返回索引 j
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return j;
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}
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```
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=== "C#"
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```csharp title="binary_search_edge.cs"
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[class]{binary_search_edge}-[func]{binarySearchRightEdge}
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/* 二分查找最右一个 target */
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int binarySearchRightEdge(int[] nums, int target) {
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// 转化为查找最左一个 target + 1
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int i = binary_search_insertion.binarySearchInsertion(nums, target + 1);
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// j 指向最右一个 target ,i 指向首个大于 target 的元素
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int j = i - 1;
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// 未找到 target ,返回 -1
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if (j == -1 || nums[j] != target) {
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return -1;
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}
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// 找到 target ,返回索引 j
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return j;
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}
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```
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=== "Go"
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```go title="binary_search_edge.go"
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[class]{}-[func]{binarySearchRightEdge}
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/* 二分查找最右一个 target */
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func binarySearchRightEdge(nums []int, target int) int {
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// 转化为查找最左一个 target + 1
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i := binarySearchInsertion(nums, target+1)
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// j 指向最右一个 target ,i 指向首个大于 target 的元素
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j := i - 1
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// 未找到 target ,返回 -1
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if j == -1 || nums[j] != target {
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return -1
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}
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// 找到 target ,返回索引 j
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return j
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}
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```
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=== "Swift"
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```swift title="binary_search_edge.swift"
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[class]{}-[func]{binarySearchRightEdge}
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/* 二分查找最右一个 target */
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func binarySearchRightEdge(nums: [Int], target: Int) -> Int {
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// 转化为查找最左一个 target + 1
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let i = binarySearchInsertion(nums: nums, target: target + 1)
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// j 指向最右一个 target ,i 指向首个大于 target 的元素
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let j = i - 1
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// 未找到 target ,返回 -1
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if j == -1 || nums[j] != target {
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return -1
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}
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// 找到 target ,返回索引 j
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return j
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}
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```
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=== "JS"
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```javascript title="binary_search_edge.js"
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[class]{}-[func]{binarySearchRightEdge}
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/* 二分查找最右一个 target */
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function binarySearchRightEdge(nums, target) {
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// 转化为查找最左一个 target + 1
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const i = binarySearchInsertion(nums, target + 1);
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// j 指向最右一个 target ,i 指向首个大于 target 的元素
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const j = i - 1;
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// 未找到 target ,返回 -1
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if (j === -1 || nums[j] !== target) {
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return -1;
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}
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// 找到 target ,返回索引 j
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return j;
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}
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```
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=== "TS"
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```typescript title="binary_search_edge.ts"
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[class]{}-[func]{binarySearchRightEdge}
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/* 二分查找最右一个 target */
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function binarySearchRightEdge(nums: Array<number>, target: number): number {
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// 转化为查找最左一个 target + 1
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const i = binarySearchInsertion(nums, target + 1);
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// j 指向最右一个 target ,i 指向首个大于 target 的元素
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const j = i - 1;
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// 未找到 target ,返回 -1
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if (j === -1 || nums[j] !== target) {
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return -1;
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}
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// 找到 target ,返回索引 j
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return j;
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}
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```
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=== "Dart"
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```dart title="binary_search_edge.dart"
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[class]{}-[func]{binarySearchRightEdge}
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/* 二分查找最右一个 target */
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int binarySearchRightEdge(List<int> nums, int target) {
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// 转化为查找最左一个 target + 1
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int i = binarySearchInsertion(nums, target + 1);
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// j 指向最右一个 target ,i 指向首个大于 target 的元素
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int j = i - 1;
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// 未找到 target ,返回 -1
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if (j == -1 || nums[j] != target) {
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return -1;
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}
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// 找到 target ,返回索引 j
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return j;
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}
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```
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=== "Rust"
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```rust title="binary_search_edge.rs"
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[class]{}-[func]{binary_search_right_edge}
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/* 二分查找最右一个 target */
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fn binary_search_right_edge(nums: &[i32], target: i32) -> i32 {
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// 转化为查找最左一个 target + 1
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let i = binary_search_insertion(nums, target + 1);
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// j 指向最右一个 target ,i 指向首个大于 target 的元素
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let j = i - 1;
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// 未找到 target ,返回 -1
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if j == -1 || nums[j as usize] != target {
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return -1;
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}
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// 找到 target ,返回索引 j
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j
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}
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```
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|
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=== "C"
|
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|
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```c title="binary_search_edge.c"
|
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[class]{}-[func]{binarySearchRightEdge}
|
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/* 二分查找最右一个 target */
|
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int binarySearchRightEdge(int *nums, int numSize, int target) {
|
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// 转化为查找最左一个 target + 1
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int i = binarySearchInsertion(nums, numSize, target + 1);
|
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// j 指向最右一个 target ,i 指向首个大于 target 的元素
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int j = i - 1;
|
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// 未找到 target ,返回 -1
|
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if (j == -1 || nums[j] != target) {
|
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return -1;
|
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}
|
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// 找到 target ,返回索引 j
|
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return j;
|
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}
|
||||
```
|
||||
|
||||
=== "Zig"
|
||||
|
||||
Reference in New Issue
Block a user