Java Program to Find pair of Integers in Array whose sum is given Number1 min read

In this tutorial, we will write a program to find a pair of elements from an array whose sum equals a given number in java. Before that, you may go through the following topic in java.


Algorithm to check the pair of similar numbers present in an array whose sum is a given number

Step 1: Start
Step 2: Initiate new Array arr[]
Step 3: Declare n, value
Step 4: Take user input for:
n: number of elements in an array
arr: elements of an array
value: for the number to be checked
Step 5: Loop the entered array:
for 0 to n-1
for 0 to n
if(arr[i] + arr[j] == value)
print “arr[i] and arr[j]”
Step 6: Stop


How to Find all Pairs of Elements in an Array whose sum is equal to a given Number

Output:

How many elements: 5
Enter the elements:
1
2
5
3
4
Enter the value to be checked: 6
The pairs are:
Arr(1, 5)
Arr(2, 4)


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