### Container With the Most Water

Given n non-negative integers, find two lines that form a container that can hold the most amount of water.

### Subarray Sum Equals K

Given an unsorted array of integers and an integer k, find the number of subarrays whose sum equals k.

### Three Sum

Given an array of integers, return an array of triplets such that i != j != k and nums[i] + nums[j] + nums[k] = 0.

### Longest Common Subsequence

Given two strings, return the longest common subsequence between the two strings.

### Two Sum

Given an array of integers, return the indices of the two numbers that add up to a given target.

### Find Peak Element in a 2D Array

Given a two-dimensional binary matrix where 1 represents water and 0 represents land, mutate the matrix in place and return the matrix with the highest peak maximized.

### Insert Delete getRandom O(1)

Design and implement an efficient sampler that works in average O(1) time complexity.

### Find the Missing Number in an Array

Given an unsorted array of unique integers (size n + 1) and a first array identical to the second array, missing one integer (size n), find and output the missing integer.

### Count Complete Tree Nodes

Given the root of a complete binary tree, return the number of nodes in the tree.

### Right View Of Binary Tree

Given the root of a binary tree, imagine yourself standing on the right side of it, return the values of the nodes you can see ordered from top to bottom.

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