Problem Statement In this problem, we need to find the difference between the product of digits and the sum of digits of a given positive integer. Example 1234 14 Explanation: Product = 4 * 3 * 2 * 1 = 24 and Sum = 4 + 3 + 2 + …
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In the problem “Palindrome Linked List”, we have to check whether a given singly integer linked list is a palindrome or not. Example List = {1 -> 2 -> 3 -> 2 -> 1} true Explanation #1: The list is palindrome as all elements from the start and back are …
Consider we are given a sorted array of integers. The goal is to build a Binary Search Tree from this array such that the tree is height-balanced. Note that a tree is said to be height-balanced if the height difference of left and right subtrees of any node in the …
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In the problem “Merge Sorted Arrays”, we are given two arrays sorted in non-descending order. The first array is not fully filled and has enough space to accommodate all elements of the second array as well. We have to merge the two arrays, such that the first array contains elements …
Consider a sorted array but one index was picked and the array was rotated at that point. Now, once the array has been rotated you are required to find a particular target element and return its index. In case, the element is not present, return -1. The problem is generally …
Problem Statement In this problem there are houses in a street and House robber has to rob these houses. But the problem is that he can’t rob more than one house successively i.e which are adjacent to each other. Given a list of non-negative integers representing the amount of money …
The problem statement asks to find out the Sum of f(a[i], a[j]) over all pairs in an array of n integers in such a way that 1 < = i < j < = n considering that we are provided an array of integers. Example arr[] = {1, 2, 3, …
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Find all symmetric pairs – You are given some pairs of an array. You have to find out the symmetric pairs in it. The symmetric pair is said to be symmetric when in pairs say (a, b) and (c, d) in which ‘b’ is equal to ‘c’ and ‘a’ is …
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The problem “Length of the largest subarray with contiguous elements” states that you are given an integer array. The problem statement asks to find out the length of the longest contiguous sub-array of which elements can be arranged in a sequence (continuous, either ascending or descending). The numbers in the …
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The problem “Count number of triplets with product equal to given number” states that we are given an integer array and a number m. The problem statement asks to find out the total number of triplets of with product equals to m. Example arr[] = {1,5,2,6,10,3} m=30 3 Explanation Triplets …
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