Task:- Given a string, find the number of substrings in which all the characters are the same. For eg:- input = “aabccc” , answer = 10 Explanation:- The substrings which have same characters are - “a”(0), “aa”(0–1) , “a”(1) , “b”(2) , “c”(3) , “cc” (3–4), “ccc”(3–5) , “c”(4) …

The question was appeared in coding test of one of the company on HackerRank. Task:- Given an array ‘nums’ of length N containing positive integers and an array ‘query’ of length ‘Q’ containing indexes, print/store for each query the count of maximum value in the sub-array starting at index ‘i’…

Max Min | HackerRank You will be given a list of integers, , and a single integer . You must create an array of length from elements of such…www.hackerrank.com Task:- Given an array of integers and value ‘k’. Calculate the minimum unfairness value possible with an array of ‘k’ elements from the given array. Unfairness = max(arr) — min(arr) For eg: arr = [ 2, 8, 2, 4, 4, 1 ] and k = 4 The array [ 2…

Pairs | HackerRank Given an array of integers and a target value, determine the number of pairs of array elements that have a difference…www.hackerrank.com Task:- Given an array ‘arr’ and an integer ‘k’. Find the number of pairs whose difference is equal to value k. For eg:- arr = [ 4, 6, 8, 10, 7] and k = 2. The pairs which satisfy the conditions are (4, 6), (6, 8), (8, 10). So the…

Sherlock and the Valid String | HackerRank Sherlock considers a string to be if all characters of the string appear the same number of times. It is also if he can…www.hackerrank.com Task:- Given a string s, check whether string can be converted to a valid string or not by deleting at the most once character. A string is said to be valid if all the characters in the string occur the same number of times.

Palindrome queries | Practice Problems Prepare for your technical interviews by solving questions that are asked in interviews of various companies…www.hackerearth.com Task:- Given a string str and Q queries, each query contains left index ‘l’ and right index ‘r’. For each query print whether the substring formed from ‘l’ to ‘r’ can be rearranged to form a palindrome or not. For eg: str = “abbacd”

Range sum | Practice Problems Prepare for your technical interviews by solving questions that are asked in interviews of various companies…www.hackerearth.com Task:- Given an array of N integers and Q queries each denoting l (left-index) and r ( right-index), print sum of subarray from index l to r (inclusive) . For eg: arr = [ 1, 5, 6, 2, 3 ], N = 5 Q = 3 Queries: 1) (1, 5) …

The question appeared in the coding test taken by JP Morgan Chase in one of the placement drives. Task :- Given a list of intervals(starting time,ending time), merge all the clashing intervals and return the sorted non-clashing intervals. For eg: intervals = [ (1, 5), (7, 11),(15, 20), (3, 9)…

The question appeared in the coding test taken by JP Morgan Chase in one of the placement drives. Task :- Given a string of 0s and 1s, find the number of substrings that match the following conditions : The number of 1s and 0s in the substring are equal. The…