Problem Statement In this problem we are given an array of integers and we have to check if there exists any duplicate element which are at a distance of at least k to each other. i.e. the difference between the indices of those two same element should be less than …
The problem Convert a Number to Hexadecimal Leetcode Solution provides us with an integer. Then asks us to convert the given integer in decimal number system to hexadecimal number system. More formally, the question requires us to convert an integer given in base 10 to a base 16 representation. We …
In this problem, we are given two arrays of positive integers. All elements of the second array are distinct and are present in the first array. However, the first array can contain duplicate elements or elements that are not in the second array. We need to sort the first array …
Problem statement In the problem ” Find Words That Can Be Formed by Characters” we are given an array of strings that consists of lower case English alphabets (words) and a string that consists of a set of characters (chars). Our task is to check for each string in the array …
The problem Base 7 Leetcode Solution, asks us to convert a number into a base 7 number. The given number can be negative or positive until 10 million, in both directions on the number line. The problem seems simple and is a simple conversion of a decimal number into a …
Problem Statement In Summary Ranges problem a sorted unique integer array is given. We have to make smallest sorted list of ranges that cover all numbers in array exactly once i.e. each element of array is covered by exactly one of the ranges. Each range [a,b] in the list should …
In this problem, we are given an array of positive integers. We need to find the count of numbers with an even number of digits. Example Array = {123 , 34 , 3434 , 121 , 100} 2 Explanation: Only 34 and 3434 are integers with an even number of …
Problem Statement We are given an integer and we have to check if the number is power of 4 or not. A number is power of 4 if there exist an integer a such that, num= 4^a. Example 16 true 5 false Approach 1 (Brute Force) An obvious way to …
Problem statement In the problem ” Number of Equivalent Domino Pairs,” we are given a list of dominoes where each domino consists of two values like dominoes[i]=[a,b]. Two dominoes, dominoes[i] =[a,b] and dominoes[j]=[c,d] are equivalent if (a==c and b==d) or (a==d and c==d). Our task is to find out the …
In this problem, we are given an array of points. This represents a list of x-coordinates and y-coordinates of some points that lie on an X-Y 2-D plane. We need to check if these points form a straight line. Note that there will be at least 2 points in the …