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Walmart Labs Interview Experience | Set 13 (For Experienced)
  • Difficulty Level : Medium
  • Last Updated : 10 Jun, 2019

Round 1:
1. given a binary tree, print the preorder traversal in recursive and iterative way
2. Reverse words in a given string
3. people are standing in a queue when viewed from the front, m heads are visible, and n heads from the end. Find the number of possible arrangements such that m&n remains same when viewed from front and end respectively.

Round 2:
1. https://www.geeksforgeeks.org/maximum-sum-path-right-number-triangle/
2. What is the minimum number of straight lines to connect all the dots on this grid?

Round 3:
1. Design a data structure for updating an object efficiently in a multithreaded environment. (critical section problem)
2. Singleton Design pattern.

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