Linked List in Golang Linked List is a linear data structure like arrays, whereas, linked list doesn’t have element stored in contiguous locations, as arrays do. In simple words, we can say, lin...

Leetcode - Sortest Word Distance(Premium) Given an array of strings words and two different strings that already exist in the array word1 and word2, return the shortest distance between these ...

Leetcode - 1512. Number of Good Pairs Given an array of integers nums, return the number of good pairs. A pair (i, j) is called good if nums[i] == nums[j] and i < j. Solution...

Leetcode - 125. Valid Palindrome A phrase is a palindrome if, after converting all uppercase letters into lowercase letters and removing all non-alphanumeric characters, it reads the same...

Leetcode - 345. Reverse Vowels of a String Given a string s, reverse only all the vowels in the string and return it. The vowels are ‘a’, ‘e’, ‘i’, ‘o’, and ‘u’, and they can appear ...

Leetcode - 1832. Check if the Sentence Is Pangram A pangram is a sentence where every letter of the English alphabet appears at least once. Given a string sentence containing only lo...

Leetcode - 704. Binary Search Given an array of integers nums which is sorted in ascending order, and an integer target, write a function to search target in nums. If target exists, then ...

Leetcode - 20. Valid Parentheses Given a string s containing just the characters ‘(‘, ‘)’, ‘{‘, ‘}’, ‘[’ and ‘]’, determine if the input string is valid. An input string is valid if:...

Leetcode - 242. Valid Anagram Given two strings s and t, return true if t is an anagram of s, and false otherwise. An Anagram is a word or phrase formed by rearranging the letters of...

Leetcode - 167. Two Sum II - Input Array Is Sorted Given a 1-indexed array of integers numbers that is already sorted in non-decreasing order, find two numbers such that they add up to a ...