Write a flowchart and pseudocode for finding the sum of 2 numbers.
When working with binary trees, one common task is to analyze the properties of the tree's levels. In this blog post, we'll walk through a solution to LeetCode Problem 2583: Kth Largest Sum in a Binary Tree , a problem that challenges us to compute and find specific sums from different levels of a binary tree. Problem Statement You are given the root of a binary tree and a positive integer k . Your goal is to return the k-th largest level sum in the tree. The level sum is defined as the sum of the values of all nodes at the same depth in the tree. If the number of levels in the tree is less than k , the function should return -1 . Example 1: Input: root = [5, 8, 9, 2, 1, 3, 7, 4, 6] , k = 2 Output: 13 Explanation: Level 1 sum: 5 Level 2 sum: 8 + 9 = 17 Level 3 sum: 2 + 1 + 3 + 7 = 13 Level 4 sum: 4 + 6 = 10 The 2nd largest sum is 13 . Example 2: Input: root = [1, 2, null, 3] , k = 1 Output: 3 Explanation: The largest level sum is 3 (at the third level). This problem essentia...