int[] arr = {12,14,15,53,435,344,4};
for(int i = 0;i<arr.length - 1;i++){
for(int j = i+1;j<arr.length;j++){
if(arr[i]>arr[j]){
int temp = arr[i];
arr[i] = arr[j];
arr[j] = temp;
}
}
}
for(int i = 0; i <arr.length-1;i++){
System.out.print(arr[i]+"\n");
}
也可以在程序中直接这么写
int[] arr = {12,345,15,53,435,88,904};
Arrays.sort(arr);
//以字符串形式输出
String info = Arrays.toString(arr);
System.out.println(info);