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...
KARAN’S RELATIVES
CONCEPTS USED: Greedy algorithm, Kruskal's algorithm. DIFFICULTY LEVEL: Hard PROBLEM STATEMENT(SIMPLIFIED): Karan's came home after a long time and he wants to visit all the relatives. The total number of...
BECOME KING
CONCEPTS USED: Greedy algorithm, Priority Queues DIFFICULTY LEVEL: Medium. PROBLEM STATEMENT(SIMPLIFIED): Himanshu now wants to become the king. He has N persons to defeat before he can become the King....
KABADDI MODIFIED
CONCEPTS USED: Greedy algorithm DIFFICULTY LEVEL: Medium. PROBLEM STATEMENT(SIMPLIFIED): Arnab has made a team and he wants to fight with another team with some modified form of Kabaddi. In this...
PROFIT PRIORITY
CONCEPTS USED: Greedy algorithm. DIFFICULTY LEVEL: Hard PROBLEM STATEMENT(SIMPLIFIED): One day Aman went to the office and his boss gave him some tasks to finish within the given deadline and...
FRACTION
CONCEPTS USED: Greedy algorithm. DIFFICULTY LEVEL: Medium. PROBLEM STATEMENT(SIMPLIFIED): Now Arnab is given a fraction N/D. He is asked to divide the fraction in sum of unique unit fractions where...
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...
BLOCK MOVE
CONCEPTS USED: Greedy algorithm. DIFFICULTY LEVEL: Easy. PROBLEM STATEMENT(SIMPLIFIED): You are given N blocks and the ith block is at position A[i]. Your task is to move every block to...
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
In the realm of string manipulation, anagrams hold a significant place due to their intriguing nature. An anagram is formed by rearranging the letters of one word or phrase to...
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
A palindrome is a sequence of characters that reads the same forwards and backward. Finding the longest palindromic substring is a common problem in computer science and has applications in...
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...