JAVASCRIPT

Your task is to write a program that merges two sets of customer data, each sorted by customer ID$,$ into a single, combined dataset also sorted by customer ID$.$ This mimics a common scenario in data analytics where information from different databases needs to be consolidated for analysis.

Problem Statement:

Given two integer arrays customerData$1$ and customerData$2,$ sorted in non$-$decreasing order based on customer ID$,$ and two integers m and n$,$ representing the number of customer records in customerData$1$ and customerData$2$ respectively, merge customerData$2$ into customerData$1$ to form a single array sorted in non$-$decreasing order.

The final merged array should be stored inside customerData$1.$ To accommodate this, customerData$1$ has a length of m $+$ n$,$ where the first m elements denote the customer IDs that should be merged, and the last n elements are set to $0$ and should be ignored. customerData$2$ has a length of n$.$

Input Format:

Two sorted integer arrays customerData$1$ and customerData$2,$ and two integers m and n$.$

Output Format:

The merged array, sorted in non$-$decreasing order, stored in customerData$1.$

Examples:

Example $1$:

Input: customerData$1=[101,104,107,0,0,0],$ m $=3,$ customerData$2=[102,105,108],$ n $=3$

Output: $[101,102,104,105,107,108]$

Explanation: The arrays being merged are $[101,104,107]$ and $[102,105,108].$

Example $2$:

Input: customerData$1=[103],$ m $=1,$ customerData$2=[],$ n $=0$

Output: $[103]$

Explanation: Only one customer record in customerData$1,$ none in customerData$2.$