text: Program to check if a matrix is symmetric | Simple C # code for check a matrix is symmetric or not . ; Fills transpose of mat [ N ] [ N ] in tr [ N ] [ N ] ; Returns true if mat [ N ] [ N ] is symmetric , else false ; Driver code
code: using System ; class GFG { static int MAX = 100 ; static void transpose ( int [ , ] mat , int [ , ] tr , int N ) { for ( int i = 0 ; i < N ; i ++ ) for ( int j = 0 ; j < N ; j ++ ) tr [ i , j ] = mat [ j , i ] ; } static bool isSymmetric ( int [ , ] mat , int N ) { int [ , ] tr = new int [ N , MAX ] ; transpose ( mat , tr , N ) ; for ( int i = 0 ; i < N ; i ++ ) for ( int j = 0 ; j < N ; j ++ ) if ( mat [ i , j ] != tr [ i , j ] ) return false ; return true ; } public static void Main ( ) { int [ , ] mat = { { 1 , 3 , 5 } , { 3 , 2 , 4 } , { 5 , 4 , 1 } } ; if ( isSymmetric ( mat , 3 ) ) Console . WriteLine ( " Yes " ) ; else Console . WriteLine ( " No " ) ; } }