Question

How to display the lower triangular of a matrix in TypeScript

Answer 1

function printLowerTriangular(matrix : any) {
    const rows = matrix.length;
    const cols = matrix[0].length;
 
    for (let i = 0; i < rows; i++) {
        let s = "";
        for (let j = 0; j < cols; j++) {
            if (i < j) {
                s += "0" + " "
            }
            else {
                s += matrix[i][j] + " ";
            }
        }
        console.log(s);
    }
}
 
      
const matrix = [ [4, 8, 1],
                 [2, 3, 6],
                 [7, 5, 9] ];
          
printLowerTriangular(matrix);
 
   
     
     
/*
run:
     
"4 0 0 " 
"2 3 0 " 
"7 5 9 " 
     
*/

 

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