Long stairs: Difference between revisions

=={{header|Dart}}==

{{trans|C}}

<syntaxhighlight lang="dart">import 'dart:math';

void main() {

int secsTot = 0,

stepsTot = 0; // keep track of time and steps over all the trials

Random rand = new Random();

print("Seconds steps behind steps ahead");

for (int trial = 1; trial <= 10000; trial++) {

// 10000 attempts for the runner

int sbeh = 0, slen = 100, secs = 0; // initialise this trial

while (sbeh < slen) {

// as long as the runner is still on the stairs

sbeh += 1; // runner climbs a step

for (int wiz = 1; wiz <= 5; wiz++) {

// evil wizard conjures five new steps

if (rand.nextInt(slen) < sbeh)

sbeh += 1; // maybe a new step is behind us

slen += 1; // either way, the staircase is longer

}

secs += 1; // one second has passed

if (trial == 1 && 599 < secs && secs < 610)

print("$secs $sbeh ${slen - sbeh}");

}

secsTot += secs;

stepsTot += slen;

}

print("Average secs taken: ${secsTot / 10000.0}");

print("Average final length of staircase: ${stepsTot / 10000.0}");

}</syntaxhighlight>

{{out}}

<pre>Similar as C entry.</pre>