Java Random Int randomCommon(int min, int max, int n)

Description

random Common

License

Open Source License

Declaration

public static int[] randomCommon(int min, int max, int n) 

Method Source Code

//package com.java2s;

public class Main {

    public static int[] randomCommon(int min, int max, int n) {
        if (max == min + n) {
            return null;
        }/*from   w w  w.  ja v a2 s . c o  m*/

        if (n > (max - min + 1) || max < min) {
            return null;
        }
        int[] result = new int[n];
        int count = 0;
        while (count < n) {
            int num = (int) (Math.random() * (max - min)) + min;
            boolean flag = true;
            for (int j = 0; j < n; j++) {
                if (num == result[j]) {
                    flag = false;
                    break;
                }
            }
            if (flag) {
                result[count] = num;
                count++;
            }
        }
        return result;
    }
}

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