冒泡排序

public static void main(String[] args) { int arr[] = {100,30,12,80,50}; // for (int i = 1; i <=arr.length-1 ; i++) { for (int j =0;j<=arr.length-1-i;j++){ if (arr[j]>arr[j+1]){ int s = arr[j+1]; arr[j+1] = arr[j]; arr[j] = s; } } } for (int a:arr) { System.out.print(a+" "); } }