Maximum Product Subarray. xn or x1 > x2 < x3 > x4 < x5 > …. Longest Substring Without Repeating Characters. Star the repo if you like it. The longest Zig-Zag subsequence problem is to find length of the longest subsequence of given sequence such that all elements of this are alternating. Regular Expression Matching. All test cases passed. leetcode11. The Ultimate Guide to Binary Trees in Java. xn . leetcode218. leetcode56. Vertical Zig-Zag traversal of a Tree. leetcode34. leetcode114. - hitsa70/Coding-Ninja-Data-Structure-In-Java Perfect Rectangle . Leetcode Solution: Understand Leetcode problem Longest Zig Zag Path in a Binary Tree With a Brute Force and Optimal Solution. Contribute to grace0927/JavaPractice development by creating an account on GitHub. This will have solutions to all the problems that are included in Coding Ninja's 2020 Data structure in java Course. Longest ZigZag Path in a Binary Tree - Leetcode. leetcode . 13, Feb 19. Fig: Find longest Zig-Zag Path: Longest Zig-Zag path here is : 2 , 4, 8, 9 , hence the length is 4 Solution: Full Source Code: LINK The longest zig-zag path may not include the root of the tree, the path can either start from Right child or … From furthest node, recompute DFS for longest path 2.) ZigZag Tree Traversal; Length of the longest valid substring; Priority Queue using Linked List; ... // Java program to print level order traversal ... Zig-Zag traversal of a Binary Tree using Recursion. Previous Permutation With One Swap . If we are at any intermediate point along the longest path then from that cell we need to find the longest path to the exit which does not include any of the cells till the current path. Longest Increasing Path in a Matrix.java . Peak Index in a Mountain Array . Path In Zigzag Labelled Binary Tree . If a sequence {x1, x2, .. xn} is alternating sequence then its element satisfy one of the following relation : x1 < x2 > x3 < x4 > x5 < …. 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