Leetcode Leetcode Practice Problems & Solutions # Problems in LeetCode 2 Add Two Numbers 535 Encode and Decode TinyURL 654 Maximum Binary Tree 807 Max Increase to Keep City Skyline 1038 Binary Search Tree to Greater Sum Tree 1282 Group the People Given the Group Size They Belong To 1302 Deepest Leaves Sum 1315 Sum of Nodes with Even-Valued Grandparent 1329 Sort the Matrix Diagonally 1379 Find a Corresponding Node of a Binary Tree in a Clone of That Tree 1409 Queries on a Permutation With Key 1476 Subrectangle Queries 1551 Minimum Operations to Make Array Equal 1637 Widest Vertical Area Between Two Points Containing No Points 1689 Partitioning Into Minimum Number Of Deci-Binary Numbers 1769 Minimum Number of Operations to Move All Balls to Each Box 1791 Find Center of Star Graph 1828 Queries on Number of Points Inside a Circle