Data commit

Task/Population-count/Go/population-count-1.go

@@ -0,0 +1,38 @@
+package main
+
+import (
+    "fmt"
+    "math/bits"
+)
+
+func main() {
+    fmt.Println("Pop counts, powers of 3:")
+    n := uint64(1) // 3^0
+    for i := 0; i < 30; i++ {
+        fmt.Printf("%d ", bits.OnesCount64(n))
+        n *= 3
+    }
+    fmt.Println()
+    fmt.Println("Evil numbers:")
+    var od [30]uint64
+    var ne, no int
+    for n = 0; ne+no < 60; n++ {
+        if bits.OnesCount64(n)&1 == 0 {
+            if ne < 30 {
+                fmt.Printf("%d ", n)
+                ne++
+            }
+        } else {
+            if no < 30 {
+                od[no] = n
+                no++
+            }
+        }
+    }
+    fmt.Println()
+    fmt.Println("Odious numbers:")
+    for _, n := range od {
+        fmt.Printf("%d ", n)
+    }
+    fmt.Println()
+}

Task/Population-count/Go/population-count-2.go

@@ -0,0 +1,13 @@
+func pop64(w uint64) int {
+    const (
+        ff    = 1<<64 - 1
+        mask1 = ff / 3
+        mask3 = ff / 5
+        maskf = ff / 17
+        maskp = maskf >> 3 & maskf
+    )
+    w -= w >> 1 & mask1
+    w = w&mask3 + w>>2&mask3
+    w = (w + w>>4) & maskf
+    return int(w * maskp >> 56)
+}

Task/Population-count/Go/population-count-3.go

@@ -0,0 +1,7 @@
+func pop64(w uint64) (c int) {
+    for w != 0 {
+        w &= w - 1
+        c++
+    }
+    return
+}