Data commit

Task/Loops-Increment-loop-index-within-loop-body/Wren/loops-increment-loop-index-within-loop-body.wren

@@ -0,0 +1,26 @@
+import "/fmt" for Fmt
+
+var isPrime = Fn.new { |n|
+    if (n < 2 || !n.isInteger) return false
+    if (n%2 == 0) return n == 2
+    if (n%3 == 0) return n == 3
+    var d = 5
+    while (d*d <= n) {
+        if (n%d == 0) return false
+        d = d + 2
+        if (n%d == 0) return false
+        d = d + 4
+    }
+    return true
+}
+
+var count = 0
+var i = 42
+while (count < 42) {
+    if (isPrime.call(i)) {
+        count = count + 1
+        System.print("%(Fmt.d(2, count)): %(Fmt.dc(18, i))")
+        i = 2 * i - 1
+    }
+    i = i + 1
+}