Find the Window
Concepts Used Sorting Difficulty Level Medium Problem Statement (Simplified): Find the minimum length of the subarray when sorted completely sorts the given array. See original problem statement here Test Case...
Search Triplets
Concepts Used Sorting Difficulty Level Medium Problem Statement (Simplified): We have to find a triplet (n_{1}, n_{2}, n_{3}) in array such that sum of two number i.e. n_{1}+n_{2} equals to...
ACTIVITY SELECTION PROBLEM
CONCEPTS USED: Greedy algorithm. DIFFICULTY LEVEL: Medium. PROBLEM STATEMENT(SIMPLIFIED): PrepBuddy is given N activities with their start and finish times. The task is to select the maximum number of activities...
Salvation of Soul
Concepts Used Sorting Difficulty Level Medium Problem Statement (Simplified): For a given array, shift elements to the back of array until you get the minimum value of the whole array,...
Minimum Window Substring
Find the minimum size of the substring of string S which contains all the character from a given string T. Print the substring with minimum length. See original problem statement...
Aman and Shopping
Concepts Used Sorting Difficulty Level Easy Problem Statement (Simplified): For a given array A, find the total number of elements you can pick in given capacity X. You can't pick...
Minus Minus is Plus
Concepts Used Strings Difficulty Level Medium Problem Statement (Simplified): Given two string S and T containing only - and +. Two - together can form a single +. If it...
Hometown Newspaper
Concepts Used Sorting Difficulty Level Medium Problem Statement (Simplified): Print the Strings according to their priority and category. If string belongs to hometown, it will have a priority higher than...
Minimum Dissatisfaction
Concepts Used Sorting, Mathematics Difficulty Level Hard Problem Statement (Simplified): For a given of N students, we are given two values P_{i} and Q_{i}. Find the minimum possible sum of...
Minimum Number of Steps to Make Two Strings Anagram
Concepts Used Strings, Hashing Difficulty Level Medium Problem Statement (Simplified): For given two string, Print minimum number of steps to make them anagram. See original problem statement here Test Case...
Form the Largest Number
Concepts Used Strings, Sorting Difficulty Level Hard Problem Statement (Simplified): Given an array of numbers, arrange them in such a way that they form the largest number on joining. See...
Longest Palindromic Substring
Concepts Used Strings Difficulty Level Medium Problem Statement (Simplified): Find the longest palindromic substring in a given string and print the substring. See original problem statement here Test Cases: Input:...
Maximum Sum Rupees
Concepts Used Sorting Difficulty Level Hard Problem Statement (Simplified): We have to find the maximum sum of elements from two arrays, such that you can select elements to add only...
Maximum Divisors in a Range
Concepts Used Sorting Difficulty Level Hard, Mathematics Problem Statement (Simplified): For a given range p and q, find the highest common factor of two given numbers, i.e. a and b....
Find the Inversion Count
Concepts Used Sorting Difficulty Level Hard Problem Statement (Simplified): Find number of pairs such that a[i] > a[j] and i < j. Test Case Input: 1 5 10 50 20...
Chocolates
Concepts Used Sorting Difficulty Level Medium Problem Statement (Simplified): For given values of N and K, an array of N elements is given. You can pick at most K items...
First character
Concepts Used String, Hashing Difficulty Level Easy Problem Statement (Simplified): Find the first non-repeating character in the string, print -1 if all characters are repeating. See original problem statement here...
Distint Concat
Concepts Used String Difficulty Level Hard Problem Statement (Simplified): Find the total number of substrings which are the concatenation of the same strings, e.g.PP if formed by concatenating P twice....
Code Characters
Concepts Used String Difficulty Level Easy Problem Statement (Simplified): Find the minimum length of substring, which on replacing with any other substring of the same length gives a string containing...
Branches of Bytecode
Concepts Used String Difficulty Level Hard Problem Statement (Simplified): For given n strings and a separator s, print n/2 number of strings of equal length, by concatenating two substrings with...
Find the Closest Palindrome
Concepts Used Strings Difficulty Level Hard Problem Statement (Simplified): For given numbers we have to print the nearest anagram to it if two numbers are equidistant and anagram to the...
Maximize The Boxes
CONCEPTS USED: Searching, Basic Mathematics DIFFICULTY LEVEL: Hard PROBLEM STATEMENT(SIMPLIFIED): Given chocolates of 3 types A, B, C with their frequencies f_A,f_B and f_C, you need to pack these chocolates...
Magical Ropes
CONCEPTS USED: Binary Search DIFFICULTY LEVEL: Hard PROBLEM STATEMENT(SIMPLIFIED): Given an array H of lengths of Magical Ropes and array R of the rate by which rope increases daily, print...
Floor of a number
CONCEPTS USED: Searching DIFFICULTY LEVEL: Easy PROBLEM STATEMENT(SIMPLIFIED): Given a sorted array A and a number x. find the largest value in the array that is less than or equal...
Generate all Pairs of 0 and 1
CONCEPTS USED: Recursion DIFFICULTY LEVEL: Hard PROBLEM STATEMENT(SIMPLIFIED): Given N pairs of Binary Numbers 0 and 1, your task is to generate all possible combinations such that for each 0...
Factorial Zeros
CONCEPTS USED: Binary Search, Mathematics DIFFICULTY LEVEL: Hard PROBLEM STATEMENT(SIMPLIFIED): Given a number N, your task is to find the count of all such numbers that have N trailing zeros...
Get the Sun Light
CONCEPTS USED: Searching DIFFICULTY LEVEL: Easy PROBLEM STATEMENT(SIMPLIFIED): Given an array A of unique heights of buildings. The sun is facing buildings from left to right, print the number of...
Anagram or Not
Concepts Used Strings, Hashing Difficulty Level Easy Problem Statement (Simplified): Check if string B can be achieved by A by rearranging letters of A. If yes print Yes else No;...
Aman and Math
Concepts Used Strings Difficulty Level Hard Problem Statement (Simplified): Find the maximum answer by evaluating the given string and putting a bracket anywhere in the string. See original problem statement...
Square Moves
Concepts Used Strings, Hash Table Difficulty Level Hard Problem Statement (Simplified): Find the total number of children standing on each square after 10100 rotations by every individual child. Each child...