Translate all code to English (#1836)

* Review the EN heading format. * Fix pythontutor headings. * Fix pythontutor headings. * bug fixes * Fix headings in **/summary.md * Revisit the CN-to-EN translation for Python code using Claude-4.5 * Revisit the CN-to-EN translation for Java code using Claude-4.5 * Revisit the CN-to-EN translation for Cpp code using Claude-4.5. * Fix the dictionary. * Fix cpp code translation for the multipart strings. * Translate Go code to English. * Update workflows to test EN code. * Add EN translation for C. * Add EN translation for CSharp. * Add EN translation for Swift. * Trigger the CI check. * Revert. * Update en/hash_map.md * Add the EN version of Dart code. * Add the EN version of Kotlin code. * Add missing code files. * Add the EN version of JavaScript code. * Add the EN version of TypeScript code. * Fix the workflows. * Add the EN version of Ruby code. * Add the EN version of Rust code. * Update the CI check for the English version code. * Update Python CI check. * Fix cmakelists for en/C code. * Fix Ruby comments
2026-08-26 18:17:13 +00:00 · 2025-12-31 07:44:52 +08:00
parent 45e1295241
commit 2778a6f9c7
1284 changed files with 71557 additions and 3275 deletions
@@ -0,0 +1,79 @@
+/**
+ * File: permutations_i.c
+ * Created Time: 2023-06-04
+ * Author: Gonglja (glj0@outlook.com), krahets (krahets@163.com)
+ */
+
+#include "../utils/common.h"
+
+// Assume at most 1000 permutations
+#define MAX_SIZE 1000
+
+/* Backtracking algorithm: Permutations I */
+void backtrack(int *state, int stateSize, int *choices, int choicesSize, bool *selected, int **res, int *resSize) {
+    // When the state length equals the number of elements, record the solution
+    if (stateSize == choicesSize) {
+        res[*resSize] = (int *)malloc(choicesSize * sizeof(int));
+        for (int i = 0; i < choicesSize; i++) {
+            res[*resSize][i] = state[i];
+        }
+        (*resSize)++;
+        return;
+    }
+    // Traverse all choices
+    for (int i = 0; i < choicesSize; i++) {
+        int choice = choices[i];
+        // Pruning: do not allow repeated selection of elements
+        if (!selected[i]) {
+            // Attempt: make choice, update state
+            selected[i] = true;
+            state[stateSize] = choice;
+            // Proceed to the next round of selection
+            backtrack(state, stateSize + 1, choices, choicesSize, selected, res, resSize);
+            // Backtrack: undo choice, restore to previous state
+            selected[i] = false;
+        }
+    }
+}
+
+/* Permutations I */
+int **permutationsI(int *nums, int numsSize, int *returnSize) {
+    int *state = (int *)malloc(numsSize * sizeof(int));
+    bool *selected = (bool *)malloc(numsSize * sizeof(bool));
+    for (int i = 0; i < numsSize; i++) {
+        selected[i] = false;
+    }
+    int **res = (int **)malloc(MAX_SIZE * sizeof(int *));
+    *returnSize = 0;
+
+    backtrack(state, 0, nums, numsSize, selected, res, returnSize);
+
+    free(state);
+    free(selected);
+
+    return res;
+}
+
+/* Driver Code */
+int main() {
+    int nums[] = {1, 2, 3};
+    int numsSize = sizeof(nums) / sizeof(nums[0]);
+    int returnSize;
+
+    int **res = permutationsI(nums, numsSize, &returnSize);
+
+    printf("Input array nums = ");
+    printArray(nums, numsSize);
+    printf("\nAll permutations res = \n");
+    for (int i = 0; i < returnSize; i++) {
+        printArray(res[i], numsSize);
+    }
+
+    // Free memory
+    for (int i = 0; i < returnSize; i++) {
+        free(res[i]);
+    }
+    free(res);
+
+    return 0;
+}