Data commit

Task/Two-bullet-roulette/JavaScript/two-bullet-roulette.js

@@ -0,0 +1,51 @@
+let Pistol = function(method) {
+  this.fired = false;
+  this.cylinder = new Array(6).fill(false);
+  this.trigger = 0;
+  this.rshift = function() {
+    this.trigger = this.trigger == 0 ? 5 : this.trigger-1;
+  }
+  this.load = function() {
+    while (this.cylinder[this.trigger]) this.rshift();
+    this.cylinder[this.trigger] = true;
+    this.rshift();
+  }
+  // actually we don't need this here: just for completeness
+  this.unload = function() { this.cylinder.fill(false); }
+
+  this.spin = function() { this.trigger = Math.floor(Math.random() * 6); }
+  this.fire = function() {
+    if (this.cylinder[this.trigger]) this.fired = true;
+    this.rshift();
+  }
+  this.exec = function() {
+    if (!method) console.error('No method provided');
+    else {
+      method = method.toUpperCase();
+      for (let x = 0; x < method.length; x++)
+        switch (method[x]) {
+          case 'F' : this.fire(); break;
+          case 'L' : this.load(); break;
+          case 'S' : this.spin(); break;
+          case 'U' : this.unload(); break;
+          default: console.error(`Unknown character in method: ${method[x]}`);
+        }
+      return this.fired;
+    }
+  }
+}
+
+// simulating
+const ITERATIONS = 25e4;
+let methods = 'lslsfsf lslsff llsfsf llsff'.split(' '),
+    bodyCount;
+console.log(`@ ${ITERATIONS.toLocaleString('en')} iterations:`);
+console.log();
+for (let x = 0; x < methods.length; x++) {
+  bodyCount = 0;
+  for (let y = 1; y <= ITERATIONS; y++)
+    if (new Pistol(methods[x]).exec()) bodyCount++;
+  console.log(`${methods[x]}:`);
+  console.log(`deaths: ${bodyCount.toLocaleString('en')} (${(bodyCount / ITERATIONS * 100).toPrecision(3)} %) `);
+  console.log();
+}