rename directory

07_10001st_prime/main.go

@@ -0,0 +1,35 @@
+package main
+
+import "fmt"
+
+func main() {
+	count := 0
+	n := 0
+	for {
+		if count == 10001 {
+			break
+		}
+		n++
+		pf := PrimeFactorsOf(n)
+		if len(pf) == 1 {
+			count++
+		}
+	}
+	fmt.Println("10001st prime is", n)
+}
+
+func PrimeFactorsOf(n int) []int {
+	ret := make([]int, 0)
+	divider := 2
+	for divider < n {
+		for n%divider == 0 {
+			ret = append(ret, divider)
+			n /= divider
+		}
+		divider++
+	}
+	if n > 1 {
+		ret = append(ret, n)
+	}
+	return ret
+}