46: gs other conjuecture

46_goldbachs_other_conjecture/main.go

@@ -0,0 +1,52 @@
+package main
+
+import (
+	"fmt"
+	"math"
+)
+
+func main() {
+	primeList := generatePrimeList(10000)
+	result := 1
+	notFound := true
+	for notFound {
+		result += 2
+		j := 0
+		notFound = false
+		for result >= primeList[j] {
+			if isTwiceSquare(int64(result - primeList[j])) {
+				notFound = true
+				break
+			}
+			j++
+		}
+	}
+	fmt.Println("result:", result)
+}
+
+func generatePrimeList(n int) []int {
+	var ret []int
+	for i := 1; i < n; i++ {
+		if isPrime(i) {
+			ret = append(ret, i)
+		}
+	}
+	return ret
+}
+
+func isTwiceSquare(number int64) bool {
+	x := math.Sqrt(float64(number / 2))
+	return x == float64(int64(x))
+}
+
+func isPrime(n int) bool {
+	res := int(math.Sqrt(float64(n)))
+	divider := 2
+	for divider <= res {
+		if n%divider == 0 {
+			return false
+		}
+		divider++
+	}
+	return true
+}