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DescriptionQ225
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Q225FWASIC interview problem

Transpose a square matrix in place

TechniquesMatrixIn place
DifficultyEasy
TopicMatrices
LanguageSystemVerilog
Requirements4 checkpoints
01

Problem

Transpose an N x N matrix in place.

Example input and output

Use this case to check your interpretation
Input
matrix = [[1, 2], [3, 4]]
Output
[[1, 3], [2, 4]]
Explanation

Swapping the off-diagonal pair performs the square transpose in place.

02

Requirements (4)

  • Assume the input has N rows and every row has exactly N elements.
  • Swap only one side of the diagonal.
  • Leave diagonal elements unchanged.
  • Use O(1) extra space.