PROBLEM OF THE DAY : 24/10/2024 | Modify the Array

Welcome to the daily solving of our PROBLEM OF THE DAY with Jay Dalsaniya We will discuss the entire problem step-by-step and work towards developing an optimized solution. This will not only help you brush up on your concepts of Arrays but also build up problem-solving skills.

Given an array arr. Return the modified array in such a way that if the current and next numbers are valid numbers and are equal then double the current number value and replace the next number with 0. After the modification, rearrange the array such that all 0's are shifted to the end.

Note:

1. Assume ‘0’ as the invalid number and all others as a valid number.
2. The sequence of the valid numbers is present in the same order.

Example:

Input: arr[] = [2, 2, 0, 4, 0, 8] 
Output: [4, 4, 8, 0, 0, 0] 
Explanation: At index 0 and 1 both the elements are the same. So, we will change the element at index 0 to 4 and the element at index 1 is 0 then we will shift all the zeros to the end of the array. So, the array will become [4, 4, 8, 0, 0, 0].

Give the problem a try before going through the video. All the best!!!
Problem Link: https://practice.geeksforgeeks.org/problems/ease-the-array0633/1