Largest area rectangular sub-matrix with equal number of 1’s and 0’s

Problem Statement Given a binary matrix of size n x m. The problem is to find the largest area rectangular sub-matrix with equal number of 1’s and 0’s. Example Dimensions = 4 x 4 Matrix: 1 1 1 1 0 1 0 1 1 0 1 0 1 0 0 …

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Cumulative Frequency of Count of Each Element in an Unsorted Array

We are given an unsorted array. The task is to calculate the cumulative frequency of count of each element in an unsorted array. Example Input: A[]={2,4,3,2,2,3,4} Output: Cumulative frequency of 2 in the array is: 3 Cumulative frequency of 3 in the array is: 5 Cumulative frequency of 4 in …

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LRU Cache Implementation

Least Recently Used (LRU) Cache is a type of method which is used to maintain the data such that the time required to use the data is the minimum possible. LRU algorithm used when the cache is full. We remove the least recently used data from the cache memory of …

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Check if all Rows of a Matrix are Circular Rotations of Each Other

Problem Statement In the “Check if all Rows of a Matrix are Circular Rotations of Each Other” problem we have given a char matrix, write a program to find whether all rows are circular rotations of each other or not. If all rows are circular rotations of each other print …

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The Celebrity Problem

Problem Statement In the celebrity problem there is a room of N people, Find the celebrity. Conditions for Celebrity is- If A is Celebrity then Everyone else in the room should know A. A shouldn’t know anyone in the room. We need to find the person who satisfies these conditions. …

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