How to Iterate over a Two Dimensional List in Dart - Step by Step Examples

How to Iterate over a Two Dimensional List in Dart ?

Answer

In Dart, you can iterate over a two-dimensional list using nested for loops. The outer loop iterates over rows, and the inner loop iterates over elements in each row, allowing you to access and process each element in the 2D list.

✐ Examples

1 Iterate over a 2D List of Integers

In this example,

We create a 2D list using List>, where each inner list represents a row.
We use nested for loops to iterate over each row (inner list) and each element in the row.
We access and process each element as needed within the loops.

Dart Program

void main() {
  List<List<int>> matrix = [
    [1, 2, 3],
    [4, 5, 6]
  ];

  for (var row in matrix) {
    for (var val in row) {
      print(val);
    }
  }
}

Output

2 Iterate over a 2D List of Strings

In this example,

We create a 2D list using List>, where each inner list represents a row of strings.
We use nested for loops to iterate over each row (inner list) and each string in the row.
We access and process each string as needed within the loops.

Dart Program

void main() {
  List<List<String>> matrix = [
    ['apple', 'banana'],
    ['cherry', 'orange']
  ];

  for (var row in matrix) {
    for (var str in row) {
      print(str);
    }
  }
}

Output

apple
banana
cherry
orange

Summary

In this tutorial, we learned How to Iterate over a Two Dimensional List in Dart language with well detailed examples.

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How to Iterate over a Two Dimensional List in Dart - Step by Step Examples

How to Iterate over a Two Dimensional List in Dart ?

Answer

✐ Examples

1 Iterate over a 2D List of Integers

Dart Program

Output

2 Iterate over a 2D List of Strings

Dart Program

Output

Summary

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