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I.K Gujral Punjab Technical University Fest Experience (Sudoku Competition)

Last Updated: 28 May 2024

Sudoku, the globally adored puzzle game, is not just a pastime but a mental workout that challenges the intellect and sharpens problem-solving skills. In our college, we'r...read more

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Modules available for Serialization and Deserialization in Python

Last Updated: 14 August 2021

Python provides three different modules which allow us to serialize and deserialize objects : Marshal ModulePickle ModuleJSON Module1. Marshal Module: It is the oldest mo...read more

Find index after traversing a permutation Array of 1 to N by K steps

Last Updated: 20 May 2021

Given an integer K and an index array arr[] of length N which contains elements in the range [1, N], the task is to find the index after traversing the array by K steps st...read more

array-traversal-question

Natural Numbers

Count Distinct Rectangles in N*N Chessboard

Last Updated: 25 March 2025

Given a n x n Chessboard. The task is to count distinct rectangles from the chessboard. For example, if the input is 8 then the output should be 36.Examples:Input: n = 4 O...read more

QA – Placement Quizzes

Natural Numbers

Puzzle | Rat and Poisonous Milk Bottles

Last Updated: 18 August 2025

You are given 4 bottles of milk.Exactly 1 bottle is poisonous.The other 3 bottles are safe.You also have a rat that: Dies exactly 10 hours after drinking from the poisonou...read more

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Difference between const int*, const int * const, and int const *

Last Updated: 11 July 2025

int const*int const* is pointer to constant integer This means that the variable being declared is a pointer, pointing to a constant integer. Effectively, this implies tha...read more

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Difference Between

Programming Language

PUZZLE | Lateral Thinking

Last Updated: 09 April 2026

Problem: Move 3 matchsticks from the given set of matchsticks arranged as shown in the figure to make 3 square boxes.Check if you were right - full answer with solution be...read more

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Arrangement Puzzles