Data commit

Task/Pernicious-numbers/Go/pernicious-numbers.go

@@ -0,0 +1,33 @@
+package main
+
+import "fmt"
+
+func pernicious(w uint32) bool {
+    const (
+        ff    = 1<<32 - 1
+        mask1 = ff / 3
+        mask3 = ff / 5
+        maskf = ff / 17
+        maskp = ff / 255
+    )
+    w -= w >> 1 & mask1
+    w = w&mask3 + w>>2&mask3
+    w = (w + w>>4) & maskf
+    return 0xa08a28ac>>(w*maskp>>24)&1 != 0
+}
+
+func main() {
+    for i, n := 0, uint32(1); i < 25; n++ {
+        if pernicious(n) {
+            fmt.Printf("%d ", n)
+            i++
+        }
+    }
+    fmt.Println()
+    for n := uint32(888888877); n <= 888888888; n++ {
+        if pernicious(n) {
+            fmt.Printf("%d ", n)
+        }
+    }
+    fmt.Println()
+}