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Walmart Labs Interview Experience | Java developer for 4.5 Years Experienced

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  • Difficulty Level : Hard
  • Last Updated : 19 Oct, 2020
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Round 1:

1. Given a string containing only R and L. Find the number of balanced substrings(equal number of L’s and R’s) you will encounter where you can traverse only in the left-right direction.

Example 1: RLRRLLRLRL  Answer: 4 (RL, RRLL, RL, RL)

Example 2: LLLLRRRR  Answer:1 (LLLLRRRR)

Example 3: RLLLLRRRLR  Answer:3 (RL, LLLRRR, LR)

2. Given a tree and a node, find a list of neighbors who are not siblings of given node.


Round 2:

1. Given a String like 1,1,2,2,3,4,2,2,2,2,2,2,7,8,9,10 print range of a number which is repeated most number of times continiuously.
Example: 1,1,2,2,3,4,2,2,2,2,2,2,7,8,9,1 Answer: 6,11 (2 repeated most number of times from index 6 to 11)

2. Explain all Java OOPS concepts with examples

3.Given Employee and department tables. Department table has non-unique department names. Write a query to print department name and sum of salaries in that department only without including id columns. If 2 department names are same with different ids, then they should be different in the result.

4. Some questions on git stratagies.

Round 3: HR discussion

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