Question

How to print an aligned matrix of numbers in TypeScript

Answer 1

function printAlignedMatrix(matrix: number[][]) {
    const columnWidths = matrix[0].map((_, colIndex) =>
        Math.max(...matrix.map(row => String(row[colIndex]).length)
    ));
 
    matrix.forEach(row => {
        let rowStr = '';
        row.forEach((cell, colIndex) => {
            const formattedCell = String(cell).padStart(columnWidths[colIndex]);
            rowStr += formattedCell + '  '; 
        });
     
        console.log(rowStr);
    });
}
 
const matrix = [
  [1,   12,    123],
  [45,  4567,  45678],
  [678, 67890, 1234567],
  [9,   847,   12345678],
];
 
printAlignedMatrix(matrix);
 
 
 
 
/*
run:
 
"  1     12       123  " 
" 45   4567     45678  " 
"678  67890   1234567  " 
"  9    847  12345678  " 
 
*/

 

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