pwc326 solution in go

2 files changed, 142 insertions, 0 deletions

diff --git a/challenge-326/pokgopun/go/ch-1.go b/challenge-326/pokgopun/go/ch-1.go
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+//# https://theweeklychallenge.org/blog/perl-weekly-challenge-326/
+/*#
+
+Task 1: Day of the Year
+
+Submitted by: [43]Mohammad Sajid Anwar
+     __________________________________________________________________
+
+   You are given a date in the format YYYY-MM-DD.
+
+   Write a script to find day number of the year that the given date
+   represent.
+
+Example 1
+
+Input: $date = '2025-02-02'
+Output: 33
+
+The 2nd Feb, 2025 is the 33rd day of the year.
+
+Example 2
+
+Input: $date = '2025-04-10'
+Output: 100
+
+Example 3
+
+Input: $date = '2025-09-07'
+Output: 250
+
+Task 2: Decompressed List
+#*/
+//# solution by pokgopun@gmail.com
+
+package main
+
+import (
+	"io"
+	"os"
+	"time"
+
+	"github.com/google/go-cmp/cmp"
+)
+
+const shortForm = "2006-01-02"
+
+func doy(str string) int {
+	t, _ := time.Parse(shortForm, str)
+	return t.YearDay()
+}
+
+func main() {
+	for _, data := range []struct {
+		input  string
+		output int
+	}{
+		{"2025-02-02", 33},
+		{"2025-04-10", 100},
+		{"2025-09-07", 250},
+	} {
+		io.WriteString(os.Stdout, cmp.Diff(doy(data.input), data.output)) // blank if ok, otherwise show the difference
+	}
+}
diff --git a/challenge-326/pokgopun/go/ch-2.go b/challenge-326/pokgopun/go/ch-2.go
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+++ b/challenge-326/pokgopun/go/ch-2.go
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+//# https://theweeklychallenge.org/blog/perl-weekly-challenge-326/
+/*#
+
+Task 2: Decompressed List
+
+Submitted by: [44]Mohammad Sajid Anwar
+     __________________________________________________________________
+
+   You are given an array of positive integers having even elements.
+
+   Write a script to to return the decompress list. To decompress, pick
+   adjacent pair (i, j) and replace it with j, i times.
+
+Example 1
+
+Input: @ints = (1, 3, 2, 4)
+Output: (3, 4, 4)
+
+Pair 1: (1, 3) => 3 one time  => (3)
+Pair 2: (2, 4) => 4 two times => (4, 4)
+
+Example 2
+
+Input: @ints = (1, 1, 2, 2)
+Output: (1, 2, 2)
+
+Pair 1: (1, 1) => 1 one time  => (1)
+Pair 2: (2, 2) => 2 two times => (2, 2)
+
+Example 3
+
+Input: @ints = (3, 1, 3, 2)
+Output: (1, 1, 1, 2, 2, 2)
+
+Pair 1: (3, 1) => 1 three times => (1, 1, 1)
+Pair 2: (3, 2) => 2 three times => (2, 2, 2)
+     __________________________________________________________________
+
+   Last date to submit the solution 23:59 (UK Time) Sunday 22nd June 2025.
+     __________________________________________________________________
+
+SO WHAT DO YOU THINK ?
+#*/
+//# solution by pokgopun@gmail.com
+
+package main
+
+import (
+	"io"
+	"os"
+
+	"github.com/google/go-cmp/cmp"
+)
+
+type ints []int
+
+func (in ints) process() ints {
+	var out ints
+	for i := range len(in) / 2 {
+		j := in[2*i]
+		for j > 0 {
+			j--
+			out = append(out, in[2*i+1])
+		}
+	}
+	return out
+}
+
+func main() {
+	for _, data := range []struct {
+		input, output ints
+	}{
+		{ints{1, 3, 2, 4}, ints{3, 4, 4}},
+		{ints{1, 1, 2, 2}, ints{1, 2, 2}},
+		{ints{3, 1, 3, 2}, ints{1, 1, 1, 2, 2, 2}},
+	} {
+		io.WriteString(os.Stdout, cmp.Diff(data.input.process(), data.output)) // blank if ok, otherwise show the difference
+	}
+}