add new game - brain-prime

Author: root

Makefile

@@ -10,6 +10,8 @@ brain-gcd:
 	node bin/brain-gcd.js
 brain-progression:
 	node bin/brain-progression.js
+brain-prime:
+	node bin/brain-prime.js
 publish:
 	npm publish --dry-run
 lint:

bin/brain-prime.js

@@ -0,0 +1,5 @@
+#!/usr/bin/env node
+
+import gamePrime from "../src/brainPrime.js";
+
+gamePrime();

package.json

@@ -9,7 +9,9 @@
     "brain-even": "bin/brain-even.js",
     "brain-calc": "bin/brain-calc.js",
     "brain-gcd": "bin/brain-gcd.js",
-    "brain-progression": "bin/brain-progression.js"
+    "brain-progression": "bin/brain-progression.js",
+    "brain-prime": "bin/brain-prime.js"
+
   },
   "scripts": {
     "test": "echo \"Error: no test specified\" && exit 1"

src/brainPrime.js

@@ -0,0 +1,25 @@
+import { getRandomNum } from "./brainEven.js";
+import { TheMotor } from "../index.js";
+const isPrime = (num)=>{
+    if (num <= 1){
+        return false;
+    };
+    for (let i = 2; i <= Math.sqrt(num); i += 1) {
+        if (num % i === 0) {
+          return false;
+        }
+    };
+    return true;
+};
+const alert = "Answer 'yes' if given number is prime. Otherwise answer 'no'.";
+const genRounds = ()=>{
+    const question = getRandomNum(1, 1000)
+    const rightAnswer = isPrime(question) ? "yes": "no";
+    return [question, rightAnswer];
+
+}
+const gamePrime = ()=>{
+    TheMotor(alert, genRounds);
+}
+export default gamePrime;
+