feat(6-numeros-primos): a bit more optimized version (i think)

he4rt · Oct 6, 2023 · 36e8ed9 · 36e8ed9
1 parent 9b1223c
commit 36e8ed9
Showing 1 changed file with 16 additions and 0 deletions.
diff --git a/challenges/6-numeros-primos/crystal/pantotone/main-v2.cr b/challenges/6-numeros-primos/crystal/pantotone/main-v2.cr
@@ -0,0 +1,16 @@
+number : Int32 = ARGV[0].to_i
+
+def isPrime(number : Int32) 
+    return false if number < 2
+    return true if number == 2
+
+    divisor : Int32 = 1
+    unless divisor > Math.isqrt(number) 
+        divisor += 1
+        return false if number % divisor == 0
+    end
+
+    return true
+end
+
+puts isPrime(number)