Maximum Minimum Number Between Multiple Numbers In Flutter

import 'package:flutter/material.dart';
import 'dart:math';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  int Number_c;
  findMinValue() {
    Number_c = [1, 2, 8, 6, 11, 15, 15, 22, 40].reduce(min);
    print(Number_c);
  }

  findMaxValue() {
    Number_c = [1, 2, 4, 7, 11, 15, 22, 32, 44].reduce(max);
    print(Number_c);
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
        home: Scaffold(
          appBar: AppBar(
            backgroundColor: Colors.lightGreen,
            title: Text("Multiples Number"),
          ),
            body: Center(
                child: Column(
                    mainAxisAlignment: MainAxisAlignment.center,
                    children: <Widget>[
                      Container(
                          margin: const EdgeInsets.fromLTRB(20, 10, 20, 10),
                          child: RaisedButton(
                            onPressed: () => findMaxValue(),
                            child: Text(' Find Max Value Between Multiple Numbers '),
                            textColor: Colors.white,
                            color: Color(0xFFFFC107),
                            padding: EdgeInsets.fromLTRB(10, 10, 10, 10),
                          )),
                      Container(
                          margin: const EdgeInsets.fromLTRB(20, 10, 20, 10),
                          child: RaisedButton(
                            onPressed: () => findMinValue(),
                            child: Text(' Find Minimum Value Between Multiple Numbers '),
                            textColor: Colors.white,
                            color: Colors.pink,
                            padding: EdgeInsets.fromLTRB(10, 10, 10, 10),
                          )),
                    ]))));
  }
}