Member Technical Staff 1

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Member Technical Staff 1 Interview Questions and Answers

Updated 25 Sep 2024

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Q1. Valid parenthesis (all approaches ) time and space complexity and past projects.

Ans.

Valid parenthesis time and space complexity and past projects

  • Approaches for checking valid parenthesis include using a stack or recursion

  • Time complexity for stack approach is O(n) and space complexity is O(n)

  • Time complexity for recursion approach is O(2^n) and space complexity is O(n)

  • Past projects may include developing algorithms for string manipulation or parsing

Q2. Find some of each level in a tree

Ans.

To find some of each level in a tree, traverse the tree level by level and sum the values at each level.

  • Traverse the tree level by level using BFS (Breadth First Search)

  • At each level, sum the values of the nodes

  • Store the sum of each level in an array of strings

Q3. Find sum of digits using recursion

Ans.

Recursively find the sum of digits in a given number

  • Create a recursive function that takes in a number as input

  • Base case: if the number is less than 10, return the number

  • Recursive case: return the last digit of the number added to the result of calling the function with the number divided by 10

  • Example: For input 123, the sum of digits would be 1 + 2 + 3 = 6

Q4. Longest increasing subsequence code

Ans.

Find the longest increasing subsequence in an array

  • Use dynamic programming to solve this problem efficiently

  • Iterate through the array and keep track of the longest increasing subsequence ending at each index

  • The final answer will be the maximum value in the longest increasing subsequence array

Member Technical Staff 1 Jobs

Member Technical Staff 1 8-14 years
PayPal Holdings, Inc.
3.9
Chennai
Member Technical Staff 1 9-10 years
Xoom Inc
0.0
Chennai
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