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Tag Archives: cpp-map

Count pairs from an array having GCD equal to the minimum element in the pair

Given an array arr[] consisting of N integers, the task is to find the number of pairs such that the GCD of any pair of… Read More

frequency-counting

Sum of absolute differences of indices of occurrences of each array element | Set 2

Given an array, arr[] consisting of N integers, the task for each array element arr[i] is to print the sum of |i – j| for… Read More

interview-preparation

Minimum number of bins required to place N items ( Using Best Fit algorithm )

Given an array weight[] consisting of weights of N items and a positive integer C representing the capacity of each bin, the task is to… Read More

Check if a number is a Pangram or not

Given an integer N, the task is to check whether the given number is a pangram or not. Note: A Pangram Number contains every digit [0-… Read More

frequency-counting

Python dictionary-programs

Check if it is possible to reach any point on the circumference of a given circle from origin

Given a string S representing a sequence of moves(L, R, U, and D) and an integer R representing the radius of a circle whose center… Read More

frequency-counting

Technical Scripter 2020

Technical Scripter

Minimum number of persons required to be taught a single language such that all pair of friends can communicate with each other

Given an integer N and two arrays A[][], representing the set of languages a person knows, and B[][], consisting of M pairs of friendships, the… Read More

Technical Scripter 2020

Check if a number can be represented as difference of two positive perfect cubes

Given a positive integer N, the task is to check whether N can be represented as the difference between two positive perfect cubes or not.… Read More

maths-perfect-cube

Calculate time required to type a word using given single-row keyboard

Given a string keyboardLayout of size 26 representing the sequence of characters present in a single row of a keyboard and a string word, the… Read More

Count pairs of equal elements possible by excluding each array element once

Given an array arr[] of N integers, the task for each array element is to find the number of ways of choosing a pair of… Read More

frequency-counting

Classify strings from an array using Custom Hash Function

Given an array of strings arr[] consisting of N strings, the task is to categorize the strings according to the hash value obtained by adding… Read More

Sum of frequencies of characters of a string present in another string

Given two strings S1 and S2 of lengths M and N respectively, the task is to calculate the sum of the frequencies of the characters… Read More

frequency-counting

Count pairs from an array having equal sum and quotient

Given an array arr[] consisting of N integers, the task is to count the number of valid pairs (i, j) such that arr[i] + arr[j]… Read More

frequency-counting

Highest powers of 2 not exceeding non-repeating array elements

Given an array arr[] of size N, the task is for every non-repeating array element is to find the highest power of 2 that does… Read More

frequency-counting

Sum of all vertical levels of a Binary Tree

Given a binary tree consisting of either 1 or 0 as its node values, the task is to find the sum of all vertical levels… Read More

Tree Traversals

Count subarrays with equal count of occurrences of given three numbers

Given an array arr[] and three integers X, Y, Z, the task is to find the number of subarrays from the array in which the… Read More