pwc279 solution in go

2 files changed, 170 insertions, 0 deletions

diff --git a/challenge-279/pokgopun/go/ch-1.go b/challenge-279/pokgopun/go/ch-1.go
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+++ b/challenge-279/pokgopun/go/ch-1.go
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+//# https://theweeklychallenge.org/blog/perl-weekly-challenge-279/
+/*#
+
+Task 1: Sort Letters
+
+Submitted by: [45]Mohammad Sajid Anwar
+     __________________________________________________________________
+
+   You are given two arrays, @letters and @weights.
+
+   Write a script to sort the given array @letters based on the @weights.
+
+Example 1
+
+Input: @letters = ('R', 'E', 'P', 'L')
+       @weights = (3, 2, 1, 4)
+Output: PERL
+
+Example 2
+
+Input: @letters = ('A', 'U', 'R', 'K')
+       @weights = (2, 4, 1, 3)
+Output: RAKU
+
+Example 3
+
+Input: @letters = ('O', 'H', 'Y', 'N', 'P', 'T')
+       @weights = (5, 4, 2, 6, 1, 3)
+Output: PYTHON
+
+Task 2: Split String
+#*/
+//# solution by pokgopun@gmail.com
+
+package main
+
+import (
+	"io"
+	"os"
+
+	"github.com/google/go-cmp/cmp"
+)
+
+func sortLetters(letters []rune, weights []int) string {
+	r := make([]rune, len(letters))
+	for i, v := range letters {
+		r[weights[i]-1] = v
+	}
+	return string(r)
+}
+
+func main() {
+	for _, data := range []struct {
+		letters []rune
+		weights []int
+		output  string
+	}{
+		{[]rune{'R', 'E', 'P', 'L'}, []int{3, 2, 1, 4}, "PERL"},
+		{[]rune{'A', 'U', 'R', 'K'}, []int{2, 4, 1, 3}, "RAKU"},
+		{[]rune{'O', 'H', 'Y', 'N', 'P', 'T'}, []int{5, 4, 2, 6, 1, 3}, "PYTHON"},
+	} {
+		io.WriteString(os.Stdout, cmp.Diff(sortLetters(data.letters, data.weights), data.output)) // blank if ok otherwise show the difference
+	}
+}
diff --git a/challenge-279/pokgopun/go/ch-2.go b/challenge-279/pokgopun/go/ch-2.go
new file mode 100644
index 0000000000..852579e91a
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+++ b/challenge-279/pokgopun/go/ch-2.go
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+//# https://theweeklychallenge.org/blog/perl-weekly-challenge-279/
+/*#
+
+Task 2: Split String
+
+Submitted by: [46]Mohammad Sajid Anwar
+     __________________________________________________________________
+
+   You are given a string, $str.
+
+   Write a script to split the given string into two containing exactly
+   same number of vowels and return true if you can otherwise false.
+
+Example 1
+
+Input: $str = "perl"
+Ouput: false
+
+Example 2
+
+Input: $str = "book"
+Ouput: true
+
+Two possible strings "bo" and "ok" containing exactly one vowel each.
+
+Example 3
+
+Input: $str = "good morning"
+Ouput: true
+
+Two possible strings "good " and "morning" containing two vowels each or "good m
+" and "orning" containing two vowels each.
+     __________________________________________________________________
+
+   Last date to submit the solution 23:59 (UK Time) Sunday 28th July 2024.
+     __________________________________________________________________
+
+SO WHAT DO YOU THINK ?
+#*/
+//# solution by pokgopun@gmail.com
+
+package main
+
+import (
+	"io"
+	"os"
+
+	"github.com/google/go-cmp/cmp"
+)
+
+type text string
+
+func (tx text) vwlIdx() []int {
+	var r []int
+	for i, v := range tx {
+		switch v {
+		case 'a', 'e', 'i', 'o', 'u':
+			r = append(r, i)
+		}
+	}
+	return r
+}
+
+func splitString0(str text) bool {
+	l := len(str.vwlIdx())
+	if l > 0 {
+		return l%2 == 0
+	}
+	return false
+}
+
+type splitted struct {
+	First, Second text
+	Ok            bool
+}
+
+func splitString1(str text) splitted {
+	idx := str.vwlIdx()
+	l := len(idx)
+	h := l / 2
+	b := l%2 == 0
+	if b {
+		h -= 1
+	}
+	var i int
+	if l > 1 {
+		i = idx[h+1]
+	} else {
+		i = idx[h] + 1
+	}
+	return splitted{str[:i], str[i:], b}
+}
+
+func main() {
+	for _, data := range []struct {
+		str    text
+		output splitted
+	}{
+		{"perl", splitted{"pe", "rl", false}},
+		{"book", splitted{"bo", "ok", true}},
+		{"good morning", splitted{"good m", "orning", true}},
+	} {
+		io.WriteString(os.Stdout, cmp.Diff(splitString0(data.str), data.output.Ok)) // blank if ok, otherwise show the difference
+		io.WriteString(os.Stdout, cmp.Diff(splitString1(data.str), data.output))    // blank if ok, otherwise show the difference
+	}
+}