Senior Software Engineer

You are given a number 'N' in the form of a string 'S', your task is to find the smallest number strictly greater than the given number 'N' which is a palindrome.

Note:

1) A palindrome is a word, number, phrase, or another sequence of characters that reads the same backward as forward, such as 'naman', 'abcba', '1234321', etc
2) The numerical value of the given string 'S' will be greater than 0.
3) A single-digit number is also considered as a palindrome.
4) Note that the length of the string 'S' is nothing but the number of digits in the number 'N'.

You are given an array ‘ARR’ of ‘N’ integers, you need to find the maximum length of the sub-array such that the product of elements of the sub-array is positive.

For Example:

Let us say we have array 'ARR' =[-1,3,5,-2,4,-9]. The longest sub-array with the positive product is [3,5,-2,4,-9]. 

Given an array ARR of N integers and an integer S. The task is to find whether there exists a subarray(positive length) of the given array such that the sum of elements of the subarray equals to S or not. If any subarray is found, return the start and end index (0 based index) of the subarray. Otherwise, consider both the START and END indexes as -1.

Note:

If two or more such subarrays exist, return any subarray.

For Example: If the given array is [1,2,3,4] and the value of S is equal to 7. Then there are two possible subarrays having sums equal to S are [1,2,3] and [3,4].

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