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Java program to move all zero at the end of the array

In this java program, we are implementing a logic in which all zeros (0) of given array will be moved at the end of the array. By IncludeHelp Last updated : December 23, 2023

Problem statement

Given an integer array with zeros (0's) and we have to move all zeros at the end of the array using java program.

Example

Input array: 5, 1, 6, 0, 0, 3, 9, 0, 6, 7, 8, 12, 10, 0, 2
After moving 0 at the end 
Output array: 5, 1, 6, 3, 9, 6, 7, 8, 12, 10, 2, 0, 0, 0, 0

Program to move zeros at the end of the array in java

public class MoveZeros {
  static void moveZeroElementToEnd(int[] arr) {
    // declare and initialize.
    int size = arr.length;
    int count = 0;

    // access all array elements.
    for (int i = 0; i < size; i++) {
      if (arr[i] != 0) {
        arr[count++] = arr[i];
      }
    }

    while (count < size)
      arr[count++] = 0;
  }

  public static void main(String[] args) {
    // take default elements in array.
    int[] arr = {
      5,
      1,
      6,
      0,
      0,
      3,
      9,
      0,
      6,
      7,
      8,
      12,
      10,
      0,
      2
    };
    moveZeroElementToEnd(arr);

    // print elements after moving 0's to end
    System.out.print("Array after moving zeros to end : ");

    for (int i = 0, size = arr.length; i < size; i++)
      System.out.print(arr[i] + " ");
  }
}

Output

Array after moving zeros to end : 5 1 6 3 9 6 7 8 12 10 2 0 0 0 0 

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