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Minimum number of chairs required to ensure that every worker is seated at any instant

Last Updated: 23 July 2025

Given a string S representing the record of workers entering and leaving the rest area, where E represents entering and L represents leaving the rest area. For each worker...read more

Check if two binary strings can be made equal by swapping 1s occurring before 0s

Last Updated: 23 July 2025

Given two binary strings str1 and str2 having same length, the task is to find if it is possible to make the two binary strings str1 and str2 equal by swapping all 1s occu...read more

Technical Scripter

Count array elements exceeding all previous elements as well as the next array element

Last Updated: 23 July 2025

Given an array arr[], the task is to find the count of array elements satisfying the following conditions:The array elements should be strictly greater than all the previo...read more

Count array elements whose all distinct digits appear in K

Last Updated: 23 July 2025

Given an array arr[] consisting of N positive integers and a positive integer K, the task is to find the count of array elements whose distinct digits are a subset of the ...read more

Count subarrays of atleast size 3 forming a Geometric Progression (GP)

Last Updated: 15 July 2025

Given an array arr[] of N integers, the task is to find the count of all subarrays from the given array of at least size 3 forming a Geometric Progression.Examples:Input: ...read more

Geometric Progression

Count possible values of K such that X - 1 and Y - 1 modulo K is same

Last Updated: 13 September 2021

Given two numbers X and Y, the task is to find the count of integers K which satisfies the equation (X - 1) % K = (Y - 1) % K.Examples:Input: X = 2, Y = 6Output: 3Explanat...read more

Count of Ordered Pairs (X, Y) satisfying the Equation 1/X + 1/Y = 1/N

Last Updated: 08 May 2023

Given a positive integer N, the task is to find the number of ordered pairs (X, Y) where both X and Y are positive integers, such that they satisfy the equation 1/X + 1/Y ...read more

Ripple Counter in Digital Logic

Last Updated: 26 November 2025

A ripple counter is an asynchronous counter made by cascading flip-flops, where the output of one flip-flop drives the clock of the next. Only the first flip-flop receives...read more

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Counters in Digital Logic

Last Updated: 14 January 2026

A counter is a digital electronic device that counts the number of times an event occurs using a clock signal. With each clock pulse, the count changes, such as in an up c...read more

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