Question

How to create a two dimensional (2D) array dynamically with random rows and cols in Node.js

Answer 1

const rows = Math.floor(Math.random() * 9) + 1;
const cols = Math.floor(Math.random() * 7);
  
let count = 1;
let array = [];
 
for (let i = 0; i < rows; i++) {
    let data = [];
    for (let j = 0; j < cols; j++) {
        data.push("value" + count);
        count++;
    }
    array.push(data);
}
 
console.log(array);
    
    
      
      
/*
run:
      
[
  [ 'value1', 'value2', 'value3', 'value4' ],
  [ 'value5', 'value6', 'value7', 'value8' ],
  [ 'value9', 'value10', 'value11', 'value12' ],
  [ 'value13', 'value14', 'value15', 'value16' ],
  [ 'value17', 'value18', 'value19', 'value20' ],
  [ 'value21', 'value22', 'value23', 'value24' ]
]
      
*/

 

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