Question

How to print 2D (Two-dimensional) array in TypeScript

Answer 1

let arr:number[][] = [[1,2,3],[4,5,6],[7,8,9]]

console.log(arr)

console.log(arr[0][0])
console.log(arr[0][1])
console.log(arr[0][2])

console.log(arr[1][0])
console.log(arr[1][1])
console.log(arr[1][2])

console.log(arr[2][0])
console.log(arr[2][1])
console.log(arr[2][2])

  
  
  
  
/*
  
run:
  
[[1, 2, 3], [4, 5, 6], [7, 8, 9]] 
1 
2 
3 
4 
5 
6 
7 
8 
9 
 
*/

 

 

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Answer 2

let arr:number[][] = [[1,2,3],[4,5,6],[7,8,9]];
 
for (let row_ in arr) {
    console.log(arr[row_]); 
}
   
 
 
   
   
   
   
/*
   
run:
   
[1, 2, 3] 
[4, 5, 6] 
[7, 8, 9] 
  
*/

 

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Answer 3

let arr:number[][] = [[1,2,3],[4,5,6],[7,8,9]];
 
for (let row_ of arr) {
    for (let val of row_) {
        console.log(val);
    }  
}
 
 
   
   
   
   
/*
   
run:
 
1 
2 
3 
4 
5 
6 
7 
8 
9 
  
*/
 

 

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Answer 4

let arr:number[][] = [[1,2,3],[4,5,6],[7,8,9]];
 
for (let i = 0; i < arr.length; i++) {
    for(let j = 0; j < arr[i].length; j++) {
        console.log(arr[i][j]);
    }
}
   
 
 
   
   
   
   
/*
   
run:
   
1 
2 
3 
4 
5 
6 
7 
8 
9 
  
*/

 

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