# Array Sum

Last Updated : 16 Oct, 2023

## What is Array Sum?

In context of Computer Science, array sum is defined as the sum of all the elements in an array. Suppose you have an array ARR[]={a1, a2, a3…, an}, let ArrSum be the array sum of this array, then by defination:

ArrSum= a1 + a2 + a3 +…+ an

## Practice problems related to Array Sum:

Problem

Difficulty

Program to find sum of elements in a given array

Easy

Sum of array elements using recursion

Easy

Suffix Sum Array

Easy

Sum of array elements after reversing each element

Easy

Prefix Sum Array

Easy

Construct sum-array with sum of elements in given range

Medium

Sum of array elements that is first continuously increasing

Medium

Maximizing array sum with given operation

Medium

Find Sum of all unique sub-array sum for a given array.

Medium

Calculate sum of the array generated by given operations

Medium

Find an element in array such that sum of left array is equal …

Medium

Sum of all elements in an array between zeros

Medium

Sum of the updated array after performing the given …

Medium

A Sum Array Puzzle

Medium

Replace every element of array with sum of elements on its …

Medium

Find Subarray with given sum | Set 1 (Non-negative ..

Medium

Sum of all Subarrays | Set 1

Medium

Check if pair with given Sum exists in Array (Two Sum)

Medium

Count array elements having sum of digits equal to K

Medium

Sum of an array of large numbers

Hard

Sum of elements in given range from Array formed by …

Hard

Minimum operations to make Array sum at most S from …

Hard

Find a triplet that sum to a given value (3sum)

Hard

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