# Java Program to Implement Radix Sort

This is a Java Program to implement Radix Sort Algorithm. This program is to sort a list of numbers.
Here is the source code of the Java program to implement Radix Sort Algorithm. The Java program is successfully compiled and run on a Windows system. The program output is also shown below.

/**
** Java Program to Implement Radix Sort
**/

import java.util.Scanner;

{
public static void sort( int[] a)
{
int i, m = a[0], exp = 1, n = a.length;
int[] b = new int[n];
for (i = 1; i < n; i++)
if (a[i] > m)
m = a[i];
while (m / exp > 0)
{
int[] bucket = new int[10];

for (i = 0; i < n; i++)
bucket[(a[i] / exp) % 10]++;
for (i = 1; i < 10; i++)
bucket[i] += bucket[i - 1];
for (i = n - 1; i >= 0; i--)
b[--bucket[(a[i] / exp) % 10]] = a[i];
for (i = 0; i < n; i++)
a[i] = b[i];
exp *= 10;
}
}
/** Main method **/
public static void main(String[] args)
{
Scanner scan = new Scanner( System.in );
int n, i;
/** Accept number of elements **/
System.out.println("Enter number of integer elements");
n = scan.nextInt();
/** Create integer array on n elements **/
int arr[] = new int[ n ];
/** Accept elements **/
System.out.println("\nEnter "+ n +" integer elements");
for (i = 0; i < n; i++)
arr[i] = scan.nextInt();
/** Call method sort **/
sort(arr);
/** Print sorted Array **/
System.out.println("\nElements after sorting ");
for (i = 0; i < n; i++)
System.out.print(arr[i]+" ");
System.out.println();
}
}


Output:

Radix Sort Test

Enter number of integer elements
10

Enter 10 integer elements
877 567 3456 876 467 26 934 9876 1 4567

Elements after sorting
1 26 467 567 876 877 934 3456 4567 9876