Sum of first N primes with no odd prime digit
Concepts Used: Mathematics Difficulty Level: Medium Problem Statement (Simplified): For a given number N, find the sum of first N primes which don't contain any odd prime digits (3,5,7) in...
Operate Numbers
Concepts Used: Mathematics Difficulty Level: Medium Problem Statement (Simplified): Perform following operations until one number becomes 0 and print the total number of operations. 1) Subtract larger number from smaller...
Find the missing number in sequence given as string
In the realm of problem-solving and data manipulation, uncovering the missing element in a sequence embedded within a string can be a perplexing yet intriguing task. This article delves into...
Total numbers divisible by a number in a given range
Concepts Used: Mathematics Difficulty Level: Hard Problem Statement (Simplified): For given three numbers r,p,q. We have to find the total number of values divisible by r in a range [p,q]....
FRACTION
Concepts Used Strings Difficulty Level Hard Problem Statement (Simplified): Print the decimal output of fraction of two given numbers and enclose the repeating part in decimal places in brackets. For...
Hero Villian
Concepts Used: Mathematics Difficulty Level: Medium Problem Statement (Simplified): For a given array of integers print the total number of integers which divides all the array elements and are less...
Prime Numbers
Concepts Used: Mathematics Difficulty Level: Easy Problem Statement (Simplified): For a given number N, print Yes if it is prime, else print No. Prime Numbers: Numbers that are divisible by...
Find Substring
Concepts Used Strings Difficulty Level Easy Problem Statement (Simplified): For given two strings A and B, print out if B is a substring of A or not. If yes print...
Number of Substrings Containing All Three Characters
Concepts Used Strings, Sliding Window Algorithm using two pointers Difficulty Level Medium Problem Statement (Simplified): Print the number of substrings containing all three characters i.e. a,b,c at least once in...
Power Of 2
Concepts Used Strings, Mathematics Difficulty Level Hard Problem Statement (Simplified): Find if the number given as a string is the power of two or not. Return 1 if yes, else...
Character Combine
CONCEPTS USED: Recursion DIFFICULTY LEVEL: Medium PROBLEM STATEMENT(SIMPLIFIED): Given two characters C1, C2 and an integer K, print all the possible K length combinations of both the characters. Print the...
REVERSE A LINKED LIST
Concepts Used Linked list,recursion. Difficulty Level Easy. Problem Statement : Given pointer to the head node of a linked list, the task is to reverse the linked list. See original...
AMAN RELATIVES
CONCEPTS USED: Greedy algorithm,Prim's minimum spanning tree. DIFFICULTY LEVEL: Hard. PROBLEM STATEMENT(SIMPLIFIED): Aman came home after a long time and he wants to visit all the relatives. The total number...
STACK SUM
CONCEPTS USED: Greedy algorithm. DIFFICULTY LEVEL: Medium. PROBLEM STATEMENT(SIMPLIFIED): You are given three stacks containing positive numbers. Let S1 be the sum of elements present in stack-1, S2 be the...
Dedicate Length
CONCEPTS USED: Greedy algorithm. DIFFICULTY LEVEL: Medium. PROBLEM STATEMENT(SIMPLIFIED): Nikhil wants to bring sofa(s) to his room. But he wants to dedicate the entire length of the room to the...
REMAINING GOLD COIN
CONCEPTS USED: Greedy algorithm. DIFFICULTY LEVEL: Medium. PROBLEM STATEMENT(SIMPLIFIED): You have a bag full of Gold Coins. Each coin has a positive integer inscribed on it, that denotes the value...
LARGEST NUMBER
CONCEPTS USED: Greedy algorithm DIFFICULTY LEVEL: Easy. PROBLEM STATEMENT(SIMPLIFIED): Arnab is given a number N, he is asked to remove one digit and print the largest possible number.Help Arnab find...
MAXIMIZE FLIP SIGN
CONCEPTS USED: Greedy algorithm. DIFFICULTY LEVEL: Medium. PROBLEM STATEMENT(SIMPLIFIED): Tina knows PrepBuddy likes to play games with array elements. So she gave PrepBuddy an array A containing N integers. She...
MAXIMUM VALUE
CONCEPTS USED: Greedy algorithm(fractional knapsack) DIFFICULTY LEVEL: Medium PROBLEM STATEMENT(SIMPLIFIED): One day some guests came to Aman's home. Aman's mama told him to bring N items from the market and...
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...