I want to find the sum of the digits of the number entered in Flutter. I want to encode this algorithm.

for example x=1992 result=1 9 9 2=21

how can i do this with flutter

CodePudding user response：

1. transform the number into an String using String stringValue = x.toString();
2. create an array from each char using List<String> result = stringValue.split('');
3. sum each number transforming back using int.parse(result)

void main(){
  int x = 1992;
  String stringValue = x.toString();
  List<String> result = stringValue.split('');
  int sum = 0;
   for(int i = 0 ; i < result.length; i  ) {
    int value = int.parse(result[i]);
    sum = sum   value;
   }
    print(sum);
}

Result: 21

CodePudding user response：

You can do in this way.

import 'dart:io';
 
void main() {
  print('Enter X');
  int X = int.parse(stdin.readLineSync()!);
 
  int result = 0;
  for (int i = X; i > 0; i = (i / 10).floor()) {
    result  = (i % 10);
  }
 
  print('Sum of digits\n$result');
}

Output

Enter X 123456 Sum of digits 21