19_冒泡排序

05_冒泡排序

• 4 3 2 1
• 1 4 3 2
• 1 2 4 3
• 1 2 3 4

public static void bubble_sort(int[] arr) {
    for (int j = 0; j < arr.length - 1; j++) {
        for (int i = arr.length - 1; i > j; i--) {
            if (arr[i-1] > arr[i]) {
                int temp = arr[i];
                arr[i] = arr[i-1];
                arr[i-1] = temp;
            }
        }
    }
};