# Tag Archives: Hash

Given string str consisting of lower case alphabets only and an integer K. The task is to find the minimum cost to modify the string… Read More
Given an array of strings arr[] and two integers l and r, the task is to find the number of times the given string str… Read More
Given two arrays arr1[] and arr2[], the task is to take an element from first array (say a) and one element from second array (say… Read More
Given an integer N, the task is to check whether N divides the sum of the factorials of its digits. Examples:  Input: N = 19 Output:… Read More
Given an array arr[] of strings of equal lengths. The task is to calculate the total number of pairs of strings which differ in exactly… Read More
Given an integer k and an array arr[], the task is to count the number of sub-arrays that have the sum equal to some positive… Read More
Given two arrays arr1[] and arr2[] of sizes N and M where 0 ≤ arr1[i], arr2[i] ≤ 1000 for all valid i, the task is… Read More
Given a string S and a range [L, R]. The task is to find the number of ways in which the sub-string in the range… Read More
Given an integer K and an array arr[], the task is to count all the sub-arrays whose product is divisible by K.Examples:   Input: arr[] =… Read More
Given an array arr[], the task is to count maximum count of pairs which give the same sum.Examples:   Input: arr[] = {1, 2, 3, 4} Output:… Read More
Given the integer values of N and K. The task is to find the number of pairs from the set of natural numbers up to… Read More
Given an array A[] and positive integer K, the task is to count the total number of pairs in the array whose sum is divisible… Read More
Given an array of N integers and an integer K. The task is to print the maximum number of pairs(a[i]+a[j]) possible which are divisible by… Read More
Given an array arr[] of N distinct integers. The task is to find the sum of two array integers a[i] + a[j] which occurs maximum… Read More
Given two strings s1 and s2. The task is to take one character from the first string and one character from the second string and… Read More