Symmetric matrix

Write a function that, given a square matrix @m@, tells if it is symmetric or not.

Remember that a matrix $m$ is symmetric if $m_{i,j}=m_{j,i}$ for any $i$ and for any $j$.

Precondition

@m@ is a square matrix $n\times n$ with $n \ge 0$.

Interface

typedef vector< vector<int> > Matrix;

bool is_symmetric(const Matrix& m);

public static boolean isSymmetric(int[][] m);

is_symmetric(m)  # returns bool

is_symmetric(m: list[list[int]]) -> bool

Problem information

Author: Unknown
Translator: Carlos Molina

Generation: 2026-01-25T11:09:34.820Z

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