排序算法-快速排序

Author: BGMer7

src/com/gatsby/utils/SortUtil.java

@@ -0,0 +1,48 @@
+package com.gatsby.utils;
+
+/**
+ * @ClassName: SortUtil
+ * @Description: 排序类
+ * @author: Gatsby
+ * @date: 2022/7/25 15:03
+ */
+
+public class SortUtil {
+    /**
+     * @MethodName:  quickSort
+     * @Parameter: [nums, begin, end]
+     * @Return void
+     * @Description: 快速排序
+     * @author: Gatsby
+     * @date:  2022/7/25 15:20
+     */
+    public static void quickSort(int[] nums, int begin, int end) {
+        if (begin < end) {
+            int pivot = nums[begin];
+            int i = begin;
+            int j = end;
+            while (i < j) {
+                while (i < j && nums[j] > pivot) {
+                    j--;
+                }
+                if (i < j) {
+                    nums[i] = nums[j];
+                    i++;
+                }
+
+                while (i < j && nums[i] < pivot) {
+                    i++;
+                }
+                if (i < j) {
+                    nums[j] = nums[i];
+                    j--;
+                }
+            }
+            nums[j] = pivot;
+            quickSort(nums, begin, j - 1);
+            quickSort(nums, j + 1, end);
+        }
+    }
+}
+
+