Question

How to get the rows and columns of a matrix (2D array) in TypeScript

Answer 1

const arr = [
  [1, 2, 3, 5, 6],
  [4, 5, 1, 5, 6],
  [7, 8, 9, 5, 0]
];
 
const rows = arr.length;
const cols = arr[0].length;
 
console.log(rows); 
console.log(cols); 
 
   
     
     
/*
run:
     
3
5
     
*/

 

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