Initial data commit

Task/Fortunate-numbers/Go/fortunate-numbers.go

@@ -0,0 +1,44 @@
+package main
+
+import (
+    "fmt"
+    "math/big"
+    "rcu"
+    "sort"
+)
+
+func main() {
+    primes := rcu.Primes(379)
+    primorial := big.NewInt(1)
+    var fortunates []int
+    bPrime := new(big.Int)
+    for _, prime := range primes {
+        bPrime.SetUint64(uint64(prime))
+        primorial.Mul(primorial, bPrime)
+        for j := 3; ; j += 2 {
+            jj := big.NewInt(int64(j))
+            bPrime.Add(primorial, jj)
+            if bPrime.ProbablyPrime(5) {
+                fortunates = append(fortunates, j)
+                break
+            }
+        }
+    }
+    m := make(map[int]bool)
+    for _, f := range fortunates {
+        m[f] = true
+    }
+    fortunates = fortunates[:0]
+    for k := range m {
+        fortunates = append(fortunates, k)
+    }
+    sort.Ints(fortunates)
+    fmt.Println("After sorting, the first 50 distinct fortunate numbers are:")
+    for i, f := range fortunates[0:50] {
+        fmt.Printf("%3d ", f)
+        if (i+1)%10 == 0 {
+            fmt.Println()
+        }
+    }
+    fmt.Println()
+}