FIND SHELTER
CONCEPTS USED: Greedy algorithm. DIFFICULTY LEVEL: Easy. PROBLEM STATEMENT(SIMPLIFIED): Nishant is lost along with his N−1 wandering friends. Now they have to find some shelter. Nishant and his N−1 friends...
DIGIT GAME
CONCEPTS USED: Greedy algorithm. DIFFICULTY LEVEL: PROBLEM STATEMENT(SIMPLIFIED): Arnab is playing a game. He is given a number N in string format and now he is asked to remove M...
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...
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...
Aman String
Concepts Used Strings Difficulty Level Easy Problem Statement (Simplified): Find the total number of pairs of indexes (i, j) such as subString(i, j) contains "aman" atleast once. See original problem...
Arithmetic Progression
Arithmetic Progression CONCEPTS USED: Hashing, Basic Mathematics DIFFICULTY LEVEL: Hard PROBLEM STATEMENT(SIMPLIFIED): Given an array of N integers, print the value of all those elements, whose indexes form an increasing...
Range Even
CONCEPTS USED: Recursion DIFFICULTY LEVEL: Easy PROBLEM STATEMENT(SIMPLIFIED): Given a number N, your task is to print all even numbers (>0) from 1 to N using recursion. See original problem...
Pairs
CONCEPTS USED: Hashing DIFFICULTY LEVEL: Medium PROBLEM STATEMENT(SIMPLIFIED): Given M pairs of integers, where each integer is between 1 and N inclusive. Check if there exists two integers x and...
Minimum number of notes
CONCEPTS USED: Basic Mathematics DIFFICULTY LEVEL: Easy PROBLEM STATEMENT(SIMPLIFIED): Given various currency notes (1,2,5,10,20,50 ,100,500,1000) and N rupees. Print the minimum number of currency notes required to exchange for the...
Benchmates
CONCEPTS USED: Efficient Array Search DIFFICULTY LEVEL: Medium PROBLEM STATEMENT(SIMPLIFIED): Given marks of N students sitting on a bench and a value of K, print the index of the student...