pwc175 solution in go

2 files changed, 74 insertions, 0 deletions

diff --git a/challenge-175/pokgopun/go/ch-1.go b/challenge-175/pokgopun/go/ch-1.go
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+++ b/challenge-175/pokgopun/go/ch-1.go
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+/* https://theweeklychallenge.org/blog/perl-weekly-challenge-175/
+Task 1: Last Sunday
+Submitted by: Mohammad S Anwar
+Write a script to list Last Sunday of every month in the given year.
+
+For example, for year 2022, we should get the following:
+
+
+2022-01-30
+2022-02-27
+2022-03-27
+2022-04-24
+2022-05-29
+2022-06-26
+2022-07-31
+2022-08-28
+2022-09-25
+2022-10-30
+2022-11-27
+2022-12-25
+*/
+package main
+
+import (
+	"fmt"
+	"os"
+	"strings"
+	"time"
+
+	"github.com/pokgopun/go/lastweekday"
+)
+
+func main() {
+	var year uint = 2022
+	fmt.Sscanf(strings.Join(os.Args[1:], ""), "%d", &year)
+	fmt.Println(lastweekday.New(time.Sunday, year, "2006-01-02"))
+}
diff --git a/challenge-175/pokgopun/go/ch-2.go b/challenge-175/pokgopun/go/ch-2.go
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+/* https://theweeklychallenge.org/blog/perl-weekly-challenge-175/
+Task 2: Perfect Totient Numbers
+Submitted by: Mohammad S Anwar
+Write a script to generate first 20 Perfect Totient Numbers. Please checkout wikipedia page for more informations.
+
+
+Output
+
+3, 9, 15, 27, 39, 81, 111, 183, 243, 255, 327, 363, 471, 729,
+2187, 2199, 3063, 4359, 4375, 5571
+*/
+package main
+
+import (
+	"io"
+	"os"
+	"strconv"
+	"strings"
+
+	"github.com/pokgopun/go/totient"
+)
+
+func main() {
+	p := totient.New()
+	cntdwn := 20
+	var b strings.Builder
+	for i := uint(0); i < 10_000; i++ {
+		if p.IsPerfect(i) {
+			b.WriteString(", " + strconv.FormatUint(uint64(i), 10))
+			cntdwn--
+		}
+		if cntdwn == 0 {
+			break
+		}
+	}
+	io.WriteString(os.Stdout, (b.String()[2:])+"\n")
+}