init

greed/324.h

@@ -0,0 +1,17 @@
+static int cmp(const void *pa, const void *pb) {
+    return *(int *)pa - *(int *)pb;
+}
+
+void wiggleSort(int* nums, int numsSize) {
+    int * arr = (int *)malloc(sizeof(int) * numsSize);
+    memcpy(arr, nums, sizeof(int) * numsSize);
+    qsort(arr, numsSize, sizeof(int), cmp);
+    int x = (numsSize + 1) / 2;
+    for (int i = 0, j = x - 1, k = numsSize - 1; i < numsSize; i += 2, j--, k--) {
+        nums[i] = arr[j];
+        if (i + 1 < numsSize) {
+            nums[i + 1] = arr[k];
+        }
+    }
+    free(arr);
+}