Roman to Integer Leetcode Solution

In the problem “Roman to Integer”, we are given a string representing some positive integer in its Roman numeral form. Roman numerals are represented by 7 characters that can be converted to integers using the following table: Note: The integer value of the given roman numeral will not exceed or …

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Maximum Length of Repeated Subarray

In problem “Maximum Length of Repeated Subarray” we have given two arrays Array 1 and Array 2, your task is to find the maximum length of the sub-array that appears in both the arrays. Example Input: [1,2,3,2,1] [3,2,1,4,7] Output: 3 Explanation: Because the maximum length of sub-array is 3 and …

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Difference between highest and least frequencies in an array

The problem “Difference between highest and least frequencies in an array” states that suppose that you have an integer array. The problem statement asks to find out the maximum difference between the highest frequency and lowest frequency of two distinct numbers in an array. Example arr[] = {1, 2, 3, …

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Mean of range in array

Problem Statement The problem “Mean of range in array” states that you are given an integer array and q number of queries. Each query contains the left and right as a range. The problem statement asks to find out the floor mean value of all the integers that come in …

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Rearrange a binary string as alternate x and y occurrences

Problem Statement Suppose you are given a binary string, and two numbers x and y. The string consists of 0s and 1s only. The problem “Rearrange a binary string as alternate x and y occurrences” asks to rearrange the string such that the 0 comes x times ⇒ 1 comes …

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Rearrange array such that even index elements are smaller and odd index elements are greater

Problem Statement You have given an array of integers. The problem “Rearrange array such that even index elements are smaller and odd index elements are greater” asks to rearrange the array in such a manner that the even index elements should be smaller than the odd index elements in a …

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Count pairs from two sorted arrays whose sum is equal to a given value x

Problem Statement “Count pairs from two sorted arrays whose sum is equal to a given value x” problem states that you are given two sorted arrays of integers and an integer value called sum. The problem statement asks to find out the total number of pair which sums up to …

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