## 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 …

## Rotate List Leetcode Solution

The problem Rotate List Leetcode Solution provides us a linked list and an integer. We are told to rotate the linked list to the right by k places. So if we rotate a linked list k places to the right, in each step we take the last element from the …

## Pow(x, n) Leetcode Solution

The problem “Pow(x, n) Leetcode Solution” states that you are given two numbers, one of which is a floating-point number and another an integer. The integer denotes the exponent and the base is the floating-point number. We are told to find the value after evaluating the exponent over the base. …

## Insert into a Binary Search Tree Leetcode Solution

In this problem, we are given the root node of a Binary Search Tree containing integer values and an integer value of a node that we have to add in the Binary Search Tree and return its structure. After inserting the element into the BST, we have to print its …

## Iterative Inorder Traversal of a Binary Tree

In “Iterative Inorder Traversal of a Binary Tree” problem we are given a binary tree. We need to traverse it in inorder fashion “iteratively”, without the recursion. Example 2 / \ 1 3 / \ 4 5 4 1 5 2 3 1 / \ 2 3 / \ 4 …

## Morris Inorder Traversal

We can traverse a tree in the inorder fashion iteratively, using stack, but it consumes space. So, in this problem, we are going to traverse a tree without the linear space being used. This concept is called Morris Inorder Traversal or Threading in Binary trees. Example 2 / \ 1 …

## Permutations Leetcode Solution

The problem Permutations Leetcode Solution provides a simple sequence of integers and asks us to return a complete vector or array of all the permutations of the given sequence. So, before going into solving the problem. We should be familiar with permutations. So, a permutation is nothing but an arrangement …

## House Robber II Leetcode Solution

In the “House Robber II” problem, a robber wants to rob money from different houses. The amount of money in the houses is represented through an array. We need to find the maximum sum of money that can be made by adding the elements in a given array according to …

## Multiply Strings Leetcode Solution

The problem Multiply Strings Leetcode solution asks us to multiply two strings which are given to us as input. We are required to print or return this result of multiplying to the caller function. So to put it more formally given two strings, find the product of the given strings. …

## Search in Rotated Sorted Array Leetcode Solution

Consider a sorted array but one index was picked and the array was rotated at that point. Now, once the array has been rotated you are required to find a particular target element and return its index. In case, the element is not present, return -1. The problem is generally …