Populates specified array with random integers. - Java java.lang

Java examples for java.lang:int Array

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Description

Populates specified array with random integers.

Demo Code

/*//from  w  w w  .j av  a  2s  .c o m
 * Copyright 2013 Ilya Gubarev.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
//package com.java2s;
import java.util.Random;

public class Main {
    public static void main(String[] argv) throws Exception {
        int[] array = new int[] { 34, 35, 36, 37, 37, 37, 67, 68, 69 };
        populate(array);
    }

    /**
     * Populates specified array with random integers.
     *
     * @param array an array to be populated.
     */
    public static void populate(int[] array) {
        Random random = new Random();
        for (int i = 0; i < array.length; ++i) {
            array[i] = random.nextInt();
        }
    }

    /**
     * Populates specified array with random integers (0 <= x < maxValue).
     *
     * @param array an array to be populated.
     * @param maxValue a max value of random integers (exclusive).
     */
    public static void populate(int[] array, int maxValue) {
        Random random = new Random();
        for (int i = 0; i < array.length; ++i) {
            array[i] = random.nextInt(maxValue);
        }
    }
}

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