codingame.com | Question 1 - Power of Thor

main.dart

import 'dart:io';
import 'dart:math';

void main() {
    String line = stdin.readLineSync();
    
    var e = line.split(' ').map((i) => int.parse(i)).toList();
    
    var lx = e[0];
    var ly = e[1];
    var tx = e[2];
    var ty = e[3];
    
    var dx = lx - tx;
    var dy = ly - ty;
    
    var ns = {
        -1:"N",
        0:"",
        1:"S"
    };
    
    var ew = {
        -1:"W",
        0:"",
        1:"E"
    };
    
    var adx = dx.abs();
    var ady = dy.abs();
    var maxd = max(adx,ady);
    var mind = min(adx,ady);
    
    var diagX = [];
    var diagY = [];
    
    var strtX = [];
    var strtY = [];
    
    diagX.addAll(new List.filled(mind, ew[dx.sign]));
    diagY.addAll(new List.filled(mind, ns[dy.sign]));
    
    dx = dx - mind;
    dy = dy - mind;
    
    strtX.addAll(new List.filled(maxd-mind, ew[dx.sign]));
    strtY.addAll(new List.filled(maxd-mind, ns[dy.sign]));
    
    var moveX = []..addAll(diagX)..addAll(strtX);
    var moveY = []..addAll(diagY)..addAll(strtY);
    
    var move = new List.generate(maxd, (int index) => moveY[index]+moveX[index]);

    move.forEach((m) => print(m));
}