Challenge 2: Merge Two Sorted Arrays

Problem statement

Implement a function mergeArrays(int arr1[], int arr2[], int arr1Size,int arr2Size) which merges two sorted arrays into another sorted array.

Input

Two sorted arrays and their sizes are given.

Output

The output is a merged sorted array consisting of all elements of both input arrays.

Sample input

arr1 = [1,3,4,5]  
arr2 = [2,6,7,8]

Sample output

arr = [1,2,3,4,5,6,7,8]