Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance. Project price only 1 $
You can buy this project and download/modify it how often you want.
package com.github.myibu.algorithm.random;
import java.util.Random;
/**
* shuffle array
* @author myibu
* Created on 2021/9/17
*/
public class RandomArrays {
public static void shuffle(char[] a) {
if (null == a || a.length < 2) return;
Random random = new Random();
for (int i = a.length-1; i >= 0; i--) {
swap(a, i, random.nextInt(i+1));
}
}
public static void swap(char[] a, int i, int j) {
if (null == a) {
return;
}
if (i >= 0 && i < a.length && j >= 0 && j < a.length) {
char temp = a[j];
a[j] = a[i];
a[i] = temp;
}
}
public static void shuffle(boolean[] a) {
if (null == a || a.length < 2) return;
Random random = new Random();
for (int i = a.length-1; i >= 0; i--) {
swap(a, i, random.nextInt(i+1));
}
}
public static void swap(boolean[] a, int i, int j) {
if (null == a) {
return;
}
if (i >= 0 && i < a.length && j >= 0 && j < a.length) {
boolean temp = a[j];
a[j] = a[i];
a[i] = temp;
}
}
public static void shuffle(byte[] a) {
if (null == a || a.length < 2) return;
Random random = new Random();
for (int i = a.length-1; i >= 0; i--) {
swap(a, i, random.nextInt(i+1));
}
}
public static void swap(byte[] a, int i, int j) {
if (null == a) {
return;
}
if (i >= 0 && i < a.length && j >= 0 && j < a.length) {
byte temp = a[j];
a[j] = a[i];
a[i] = temp;
}
}
public static void shuffle(short[] a) {
if (null == a || a.length < 2) return;
Random random = new Random();
for (int i = a.length-1; i >= 0; i--) {
swap(a, i, random.nextInt(i+1));
}
}
public static void swap(short[] a, int i, int j) {
if (null == a) {
return;
}
if (i >= 0 && i < a.length && j >= 0 && j < a.length) {
short temp = a[j];
a[j] = a[i];
a[i] = temp;
}
}
public static void shuffle(int[] a) {
if (null == a || a.length < 2) return;
Random random = new Random();
for (int i = a.length-1; i >= 0; i--) {
swap(a, i, random.nextInt(i+1));
}
}
public static void swap(int[] a, int i, int j) {
if (null == a) {
return;
}
if (i >= 0 && i < a.length && j >= 0 && j < a.length) {
int temp = a[j];
a[j] = a[i];
a[i] = temp;
}
}
public static void shuffle(long[] a) {
if (null == a || a.length < 2) return;
Random random = new Random();
for (int i = a.length-1; i >= 0; i--) {
swap(a, i, random.nextInt(i+1));
}
}
public static void swap(long[] a, int i, int j) {
if (null == a) {
return;
}
if (i >= 0 && i < a.length && j >= 0 && j < a.length) {
long temp = a[j];
a[j] = a[i];
a[i] = temp;
}
}
public static void shuffle(float[] a) {
if (null == a || a.length < 2) return;
Random random = new Random();
for (int i = a.length-1; i >= 0; i--) {
swap(a, i, random.nextInt(i+1));
}
}
public static void swap(float[] a, int i, int j) {
if (null == a) {
return;
}
if (i >= 0 && i < a.length && j >= 0 && j < a.length) {
float temp = a[j];
a[j] = a[i];
a[i] = temp;
}
}
public static void shuffle(double[] a) {
if (null == a || a.length < 2) return;
Random random = new Random();
for (int i = a.length-1; i >= 0; i--) {
swap(a, i, random.nextInt(i+1));
}
}
public static void swap(double[] a, int i, int j) {
if (null == a) {
return;
}
if (i >= 0 && i < a.length && j >= 0 && j < a.length) {
double temp = a[j];
a[j] = a[i];
a[i] = temp;
}
}
public static void shuffle(String[] a) {
if (null == a || a.length < 2) return;
Random random = new Random();
for (int i = a.length-1; i >= 0; i--) {
swap(a, i, random.nextInt(i+1));
}
}
public static void swap(String[] a, int i, int j) {
if (null == a) {
return;
}
if (i >= 0 && i < a.length && j >= 0 && j < a.length) {
String temp = a[j];
a[j] = a[i];
a[i] = temp;
}
}
public static void shuffle(Object[] a) {
if (null == a || a.length < 2) return;
Random random = new Random();
for (int i = a.length-1; i >= 0; i--) {
swap(a, i, random.nextInt(i+1));
}
}
public static void swap(Object[] a, int i, int j) {
if (null == a) {
return;
}
if (i >= 0 && i < a.length && j >= 0 && j < a.length) {
Object temp = a[j];
a[j] = a[i];
a[i] = temp;
}
}
}
