3Sum Leetcode Solution

Problem Statement   Given an array of n integers, are there elements a, b, c in nums such that a + b + c = 0? Find all unique triplets in the array which gives the sum of zero. Notice: that the solution set must not contain duplicate triplets. Example #1 [-1,0,1,2,-1,4] …

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Insert Interval Leetcode Solution

The problem Insert Interval Leetcode Solution provides us with a list of some intervals and one separate interval. Then we are told to insert this new interval among the list of intervals. So, the new interval might be intersecting with intervals that are already in the list, or it might …

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Combination Sum Leetcode Solution

The problem Combination Sum Leetcode Solution provides us an array or list of integers and a target. We are told to find the combinations that can be made using these integers any number of times that add up to the given target. So more formally, we can use the given …

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Minimum Swaps to Make Strings Equal Leetcode Solution

Problem Statement   You are given two strings s1 and s2 of equal length consisting of letters “x” and “y” only. you can swap any two characters belong to different strings, your task is to make both the string equal. return minimum number of swaps required to make both strings equal …

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Word Search Leetcode Solution

Problem Statement   Given an m x n board and a word, find if the word exists in the grid. The word can be constructed from letters of sequentially adjacent cells, where “adjacent” cells are horizontally or vertically neighbouring. The same letter cell may not be used more than once. Example …

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Unique Paths Leetcode Solution

The problem Unique Paths Leetcode Solution states that you are given two integers representing the size of a grid. Using the size of the grid, the length, and breadth of the grid. We need to find the number of unique paths from the top left corner of the grid to …

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