text: Find the person who will finish last | Function to find the person who will finish last ; To keep track of rows and columns having 1 ; Available rows and columns ; Minimum number of choices we have ; If number of choices are odd ; P1 will finish last ; Otherwise , P2 will finish last ; Given matrix
code: function findLast ( mat ) { let m = mat . length ; let n = mat [ 0 ] . length ; let rows = new Set ( ) ; let cols = new Set ( ) ; for ( let i = 0 ; i < m ; i ++ ) { for ( let j = 0 ; j < n ; j ++ ) { if ( mat [ i ] [ j ] ) { rows . add ( i ) ; cols . add ( j ) ; } } } let avRows = m - rows . size ; let avCols = n - cols . size ; let choices = Math . min ( avRows , avCols ) ; if ( choices & 1 ) document . write ( " " ) else document . write ( " " ) } let mat = [ [ 1 , 0 , 0 ] , [ 0 , 0 , 0 ] , [ 0 , 0 , 1 ] ] findLast ( mat ) ;