pwc254 solution in go

2 files changed, 164 insertions, 0 deletions

diff --git a/challenge-254/pokgopun/go/ch-1.go b/challenge-254/pokgopun/go/ch-1.go
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+++ b/challenge-254/pokgopun/go/ch-1.go
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+//# https://theweeklychallenge.org/blog/perl-weekly-challenge-254/
+/*#
+
+Task 1: Three Power
+
+Submitted by: [47]Mohammad S Anwar
+     __________________________________________________________________
+
+   You are given a positive integer, $n.
+
+   Write a script to return true if the given integer is a power of three
+   otherwise return false.
+
+Example 1
+
+Input: $n = 27
+Output: true
+
+27 = 3 ^ 3
+
+Example 2
+
+Input: $n = 0
+Output: true
+
+0 = 0 ^ 3
+
+Example 3
+
+Input: $n = 6
+Output: false
+
+Task 2: Reverse Vowels
+#*/
+//# solution by pokgopun@gmail.com
+
+package main
+
+import (
+	"io"
+	"math"
+	"os"
+
+	"github.com/google/go-cmp/cmp"
+)
+
+func isPowerOfThree(n int) bool {
+	r := int(math.Pow(float64(n), 1./3))
+	return r*r*r == n || (r+1)*(r+1)*(r+1) == n
+}
+
+func main() {
+	for _, data := range []struct {
+		input  int
+		output bool
+	}{
+		{27, true},
+		{0, true},
+		{6, false},
+	} {
+		io.WriteString(os.Stdout, cmp.Diff(isPowerOfThree(data.input), data.output)) // blank if ok, otherwise show the difference
+	}
+}
diff --git a/challenge-254/pokgopun/go/ch-2.go b/challenge-254/pokgopun/go/ch-2.go
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index 0000000000..e96afd6ed7
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+++ b/challenge-254/pokgopun/go/ch-2.go
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+//# https://theweeklychallenge.org/blog/perl-weekly-challenge-254/
+/*#
+
+Task 2: Reverse Vowels
+
+Submitted by: [48]Mohammad S Anwar
+     __________________________________________________________________
+
+   You are given a string, $s.
+
+   Write a script to reverse all the vowels (a, e, i, o, u) in the given
+   string.
+
+Example 1
+
+Input: $s = "Raku"
+Output: "Ruka"
+
+Example 2
+
+Input: $s = "Perl"
+Output: "Perl"
+
+Example 3
+
+Input: $s = "Julia"
+Output: "Jaliu"
+
+Example 4
+
+Input: $s = "Uiua"
+Output: "Auiu"
+     __________________________________________________________________
+
+   Last date to submit the solution 23:59 (UK Time) Sunday 4th February
+   2024.
+     __________________________________________________________________
+
+SO WHAT DO YOU THINK ?
+#*/
+//# solution by pokgopun@gmail.com
+
+package main
+
+import (
+	"io"
+	"os"
+	"strings"
+
+	"github.com/google/go-cmp/cmp"
+)
+
+func main() {
+	for _, data := range []struct {
+		input, output str
+	}{
+		{"Raku", "Ruka"},
+		{"Perl", "Perl"},
+		{"Julia", "Jaliu"},
+		{"Uiua", "Auiu"},
+	} {
+		io.WriteString(os.Stdout, cmp.Diff(data.input.reverseVowels(), data.output)) // blank if ok, otherwise show the difference
+	}
+}
+
+type char byte
+
+func (ch char) isVowel() bool {
+	for _, c := range []byte("aeiou") {
+		if char(c) == ch {
+			return true
+		}
+	}
+	return false
+}
+
+type str string
+
+func (st str) vowels() str {
+	var b strings.Builder
+	for _, v := range []byte(strings.ToLower(string(st))) {
+		if char(v).isVowel() {
+			b.WriteByte(v)
+		}
+	}
+	return str(b.String())
+}
+
+func (st str) reverseVowels() str {
+	var b strings.Builder
+	vwls := st.vowels()
+	l := len(vwls)
+	for _, v := range []byte(strings.ToLower(string(st))) {
+		if char(v).isVowel() {
+			v = vwls[l-1]
+			l--
+		}
+		b.WriteByte(v)
+	}
+	return str(strings.Title(b.String()))
+}