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LeetCode - return the smallest missing positive integer using C++, Golang, and JavaScript.

LeetCode - reverse the nodes of the list k at a time, and return the modified list using C++, Golang, and JavaScript.

LeetCode - return the total number of subarrays whose sum equals to k using C++, Golang, and JavaScript.

LeetCode - return a string of the words in reverse order concatenated by a single space using C++, Golang, and JavaScript.

LeetCode - return the number of good nodes in the binary tree using C++, Golang, and JavaScript.

LeetCode - return the kth smallest element in the matrix using C++, Golang, and JavaScript.

LeetCode - return the minimum number of operations needed to make all the elements of arr equal using C++, Golang, and JavaScript.

LeetCode - return the minimized maximum pair sum after optimally pairing up the elements using C++, Golang, and JavaScript.

LeetCode - calculate the differene of ones and zeros for every cell in the matrix using C++, Golang, and JavaScript.

LeetCode - rearrange the elements of nums such that very consecutive pair of integers have opposite signs using C++, Golang, and JavaScript.

Given a sequence arr[] of N - 1 elements which is xor of all adjacent pairs in an array, the task is to find that original array from the arr[].

LeetCode - merge all the nodes lying in between them into a single node whose value is the sum of all the merged nodes using C++, Golang, and JavaScript.

LeetCode - return the corresponding column title as it appears in an Excel sheet using C++, Golang, and JavaScript.

LeetCode - return the lowest common ancestor (LCA) node of two given nodes in the BST using C++, Golang, and JavaScript.

LeetCode - return the total sum of all root-to-leaf numbers using C++, Golang, and JavaScript.

LeetCode - return any valid n-bit gray code sequence using C++, Golang, and JavaScript.

LeetCode - return the values of the nodes you can see ordered from top to bottom using C++, Golang, and Javascript.

LeetCode - return the number of paths where the sum of the values along the path equals targetSum using C++, Golang, and Javascript.

LeetCode - delete nodes which have a greater value on right side using C++, Golang and Javascript.

LeetCode - return the list such that all nodes less than x come before nodes greater than or equal to x using C++, Golang and Javascript.