Learn Java, C#, C, C++ and more with 1200+ free tutorials. No fluff, just code.
Interview Prep
Practice real interview questions and answers across 12 languages — free, no signup required.
757 posts available
Write a function to find the longest common prefix string amongst an array of strings.If there is no common prefix, return an empty string "".All given inputs are in lowercase English letters az. Constraints 0 <= strs.length <= 200 0 <= strs[i].length <= 200 strs[i] consists of only lowercase Englis
You are given two integer arrays, nums1 and nums2, both sorted in nondecreasing order. Your task is to merge these two arrays into a single new sorted array.
Given an array nums containing n distinct numbers in the range [0, n], your task is to return the only number in the range that is missing from the array. The array nums contains n distinct numbers. The numbers are guaranteed to be in the range [0, n]. n represents the length of the array nums. Exam
Given an input string s, reverse the order of the words. A word is defined as a sequence of nonspace characters. Words in s will be separated by at least one space. The reversed string should not contain leading or trailing spaces. Multiple spaces between two words should be reduced to a single spac
Given an array of integers nums, a pair (i, j) is called a good pair if nums[i] == nums[j] and i < j. Return the number of good pairs. Input: An array of integers nums. Constraints: 1 <= nums.length <= 100 1 <= nums[i] <= 100 Output: An integer representing the total count of good pairs. Example: In
This statement allows the user to use if block inside the other if block. And the inner if statement is executed only if the outer if statement’s condition is true. Syntax Syntax of nested if statement in C: nested if Flowchart: Example of nested if statement in C: The output of nested if
This post shows, How to remove all vowels from a string in java? with the help of replaceAll() method. Remove vowels from a string in java: Explanation:Removing vowels in java is easy, we will take the user input with the help of a Scanner class. we will use replaceAll() which takes in two para
in this tutorial, we will write a java program to find the sum of the Largest Forward Diagonal in an Arraylist (matrix). Java Program to find the sum of the Largest Forward Diagonal Output: Explanation:It calculates the sum of each forward diagonal and returns the sum of the largest forward diagonal
A separate function( search_function()) will be created where the array pointer will be declared and the searched element along with the size of an array will be passed. The function will return 1 if any element matches with the searched element otherwise it will return 0. This C program defines a f