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冒泡排序：
public class BubbleSort {
public static void bubbleSort(int[] arr) {
boolean flag=true;
while (flag) {
flag=false;
int temp = 0;
for (int i = 0; i < arr.length - 1; i++) {
for (int j = 0; j < arr.length - 1 - i; j++) {
if (arr[j] > arr[j + 1]) { //交换两数位置
temp = arr[j];
arr[j] = arr[j + 1];
arr[j + 1] = temp;
flag=true;
}
}
if (!flag){
break;
}
}
}
}
public static void main(String[] args){
int a[]=new int[]{345,22,43,12,65,335,124,636,3};
BubbleSort.bubbleSort(a);
System.out.print(Arrays.toString(a));
}
}