Example usage for java.util Collections shuffle

Introduction

In this page you can find the example usage for java.util Collections shuffle.

Prototype

public static void shuffle(List<?> list)

Source Link

Document

Randomly permutes the specified list using a default source of randomness.

Usage

From source file:edu.cmu.tetrad.search.TestHippocampus.java

int[] shuffle(int[] arr) {
    List<Integer> list = new ArrayList<Integer>();

    for (int i = 1; i <= arr.length; i++) {
        list.add(i);/*from w  w  w .  j a  v  a 2s  .c  o  m*/
    }

    Collections.shuffle(list);

    int[] arr2 = new int[arr.length];

    for (int i = 0; i < list.size(); i++) {
        arr2[i] = list.get(i);
    }

    return arr2;
}