Java 数组去重

第一种:

public class RomPriArr {
    public static void main(String[] args) {
        int[]arr={1,2,3,4,5};
        Random rd=new Random();
        int[]indexes=new int[arr.length];
        for (int i = 0; i <indexes.length ; i++) {
            indexes[i]=-1;
        }
        int index=rd.nextInt(5);
        int count=0;
        boolean flag;
        while (count<5) {
            flag=true;
            for (int i = 0; i < indexes.length; i++) {
                if (indexes[i]==index) {
                    flag = false;
                    break;
                }
                //flag=true;
            }
            if (flag){
                indexes[count++]=index;
            }
            index=rd.nextInt(5);
        }
        for (int i = 0; i <arr.length; i++) {
                System.out.print(arr[indexes[i]]+" ");
        }
    }
}

第二种:

public class RomPriArr {
    public static void main(String[] args) {
        int[]arr={1,2,3,4,5};
        Random rd=new Random();
        int[]indexes=new int[arr.length];
        for (int i = 0; i <indexes.length ; i++) {
            indexes[i]=-1;
        }
        for (int i = 0; i <arr.length ; i++) {
            indexes[i]=rd.nextInt(arr.length);
            for (int j = 0; j <i ; j++) {
                if (indexes[j]==indexes[i]){
                    i--;
                }
            }
        }
        for (int i = 0; i <arr.length ; i++) {
            System.out.print(arr[indexes[i]]+" ");
        }
    }
}

标签：index,arr,Java,int,indexes,rd,flag,数组
来源： https://blog.csdn.net/sungancd/article/details/114731983