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Contents
/**
* Here is an example solution for the SaddlePoints exercise
*/
component {
function saddlePoints( matrix ) {
if( matrix.isEmpty() || matrix[ 1 ].isEmpty() ) {
return [];
}
var result = [];
// Loop over each column
for( var col=1; col<=3; col++ ) {
// Loop over each row
for( var row=1; row<=3; row++ ) {
// This value must be the biggest int he row
if( getAt( matrix, row, col ) >= rowMax( matrix, row )
// and the least in the column
&& getAt( matrix, row, col ) <= colMin( matrix, col ) ){
// Silly exercise uses inferior 0-based numbering!
result.append( {
row : row-1,
column : col-1
} );
} // End check
} // end row loop
} // end col loop
return result;
}
/**
* Get minimum value for a column
*/
private function colMin( matrix, col ) {
return [ matrix[ 1 ][ col ], matrix[ 2 ][ col ], matrix[ 3 ][ col ] ].min();
}
/**
* Get maximum value for a row
*/
private function rowMax( matrix, row ) {
return matrix[ row ].max();
}
/**
* Get a specific value from the matrix
*/
private function getAt( matrix, row, col ) {
return matrix[ row ][ col ];
}
}
Version data entries
74 entries across 74 versions & 1 rubygems