Java Program to Replace Each Element of the Array with Sum of All Other Elements of the Array

Java Program to Replace Each Element of the Array with Sum of All Other Elements of the Array

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In the previous article, we have seen Java Program to Replace Each Element of the Array with Product of All Other Elements of the Array

In this article we are going to see how we can replace the elements of an array with the sum of all other elements using Java programming language.

Java Program to Replace Each Element of the Array with Sum of All Other Elements of the Array

Array is a data structure which stores a fixed size sequential collection of values of single type. Where with every array elements/values memory location is associated. Each array elements have it’s own index where array index starts from 0.

In Array set of variables referenced by a single variable name and it’s array index position. It is also called as a container object which contains elements of similar type.

Declaration of an array:

dataType[] arrayName; (or)                              //Declaring an array
dataType []arrayName; (or)
dataType arr[];

Instantiation of an Array:

arrayName = new datatype[size];                    //Allocating memory to array

Combining both Statements in One:

dataType[] arrayName = new dataType[size] //Declaring and Instantiating array

Initialization of an Array:

arrayName[index-0]= arrayElement1             //Initializing the array

...

arrayName[index-s]= arrayElementS

Combining all Statements in One:

dataType arrayName[ ]={e1,e2,e3};               //declaration, instantiation and initialization

Method-1: Java Program to Replace Each Element of the Array with Sum of All Other Elements of the Array By Static Initialization of Array Elements

Approach:

  • Take an array with elements in it.
  • Print the array elements.
  • Find the sum of all elements by iterating using a for loop.
  • Then subtract the current element from the sum and replace itself with the result, do it for each element of the array.
  • Print the new array.

Program:

import java.util.Arrays;
public class array
{
    public static void main(String args[])
    {
        // Creating the array
        int arr[] = {1,2,3,4};

        // Prints the array elements
        System.out.println("The array elements are"+Arrays.toString(arr));
        // Stores the sum of all elements in the array
        int sum = 0;        
        for(int i:arr)
        {
            sum+=i;
        }

        // Subtract the current element from the sum and replace itself with the result
        for(int i=0;i<arr.length;i++)
        {
            arr[i] = sum-arr[i];
        }

        System.out.println("The array elements after replacement"+Arrays.toString(arr));
    }
}
Output:

The array elements are[1, 2, 3, 4]
The array elements after replacement[9, 8, 7, 6]

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