Question

How to check if a matrix is symmetric (square matrix that is equal to its transpose) in TypeScript

Answer 1

function checkSymmetric(matrix: number[][]) {
    let rows: number = matrix.length;
    let cols: number = matrix[0].length;  

    if (rows != cols) {
        return false;
    }  
   
    for (let i: number = 0; i < rows; i++) {
        for (let j: number = 0; j < cols; j++) {
            if (matrix[i][j] != matrix[j][i]) {
                return false;
            }
        }
    }
   
   return true;
}


const matrix: number[][] = [[6, 4, 3],
	                        [4, 3, 7],
	                        [3, 7, 9]];

if (checkSymmetric(matrix)) {
   console.log("yes")
}
else{
   console.log("no")
}
 
 
 
 
/*
run:
 
"yes" 
 
*/

 

70+ SQL courses for beginners and professionals