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Rotate a matrix by 90 degrees clockwise
Transpose the matrix
Reverse each row of the transposed matrix
Alternatively, swap elements in-place layer by layer
Example: [[1,2],[3,4]] -> [[3,1],[4,2]]
I applied via Referral
posted on 7 Apr 2021
I applied via Campus Placement and was interviewed in Dec 2022. There were 3 interview rounds.
It was a basic aptitude test, online based.
I applied via Campus Placement and was interviewed in Jul 2022. There was 1 interview round.
Medium to hard questions based on arrays, dp
Quick sort is a popular sorting algorithm that uses divide and conquer strategy.
Divides array into smaller sub-arrays based on a pivot element
Recursively sorts sub-arrays
Combines sorted sub-arrays to get final sorted array
Time complexity: O(n log n) on average, O(n^2) worst case
Example: [3, 6, 8, 10, 1, 2, 1] -> [1, 1, 2, 3, 6, 8, 10]
Rotate a matrix by 90 degrees in place
Transpose the matrix
Reverse each row of the transposed matrix
posted on 4 Jan 2025
I applied via Company Website and was interviewed before Jan 2024. There were 2 interview rounds.
Online technical aptitude test
posted on 20 Aug 2023
I applied via Campus Placement and was interviewed before Aug 2022. There were 5 interview rounds.
Easy to medium,mostly questions are easy
Questions are easy basic intermediate and questions mostly on arrays
posted on 23 Apr 2024
based on 5 reviews
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