Question

How to create fixed size empty matrix Node.js

Answer 1

function Print(arr2d, rows, cols) {
    for (let i = 0; i < rows; i++) {
        let s = "";
        for (let j = 0; j < cols; j++)
            s +=  arr2d[i][j] + " ";
        console.log(s);
    }
    console.log();
}
 
const rows = 5;
let matrix = new Array(rows);
 
const cols = 4;
for (let i = 0; i < rows; i++) {
    matrix[i] = new Array(cols);
}
 
Print(matrix, rows, cols);
 
 
  
/*
run:
    
undefined undefined undefined undefined 
undefined undefined undefined undefined 
undefined undefined undefined undefined 
undefined undefined undefined undefined 
undefined undefined undefined undefined 
      
*/

 

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Answer 2

function Print(arr2d, rows, cols) {
    for (let i = 0; i < rows; i++) {
        let s = "";
        for (let j = 0; j < cols; j++)
            s +=  arr2d[i][j] + " ";
        console.log(s);
    }
    console.log();
}
 
const rows = 5;
const cols = 4;
 
let matrix = [];
 
for (let i = 0; i < rows; i++) {
     matrix[i] = new Array(cols);
}
 
Print(matrix, rows, cols);
 
 
  
/*
run:
    
undefined undefined undefined undefined 
undefined undefined undefined undefined 
undefined undefined undefined undefined 
undefined undefined undefined undefined 
undefined undefined undefined undefined 

      
*/

 

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