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zig : upgrade codes && rust : add codes for chapter_searching and chapter_dynamic_programming. (#591)
* zig : update zig codes * rust : add codes for linear_search and hashing_search * rust : add codes for linear_search and hashing_search * rust : add codes for chapter_dynamic_programming
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@@ -22,7 +22,7 @@ fn countingSortDigit(nums: []i32, exp: i32) !void {
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var n = nums.len;
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// 统计 0~9 各数字的出现次数
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for (nums) |num| {
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var d = @bitCast(u32, digit(num, exp)); // 获取 nums[i] 第 k 位,记为 d
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var d: u32 = @bitCast(digit(num, exp)); // 获取 nums[i] 第 k 位,记为 d
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counter[d] += 1; // 统计数字 d 的出现次数
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}
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// 求前缀和,将“出现个数”转换为“数组索引”
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@@ -34,7 +34,7 @@ fn countingSortDigit(nums: []i32, exp: i32) !void {
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var res = try mem_allocator.alloc(i32, n);
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i = n - 1;
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while (i >= 0) : (i -= 1) {
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var d = @bitCast(u32, digit(nums[i], exp));
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var d: u32 = @bitCast(digit(nums[i], exp));
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var j = counter[d] - 1; // 获取 d 在数组中的索引 j
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res[j] = nums[i]; // 将当前元素填入索引 j
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counter[d] -= 1; // 将 d 的数量减 1
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