pwc267 solution in go

2 files changed, 162 insertions, 0 deletions

diff --git a/challenge-267/pokgopun/go/ch-1.go b/challenge-267/pokgopun/go/ch-1.go
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+//# https://theweeklychallenge.org/blog/perl-weekly-challenge-267/
+/*#
+
+Task 1: Product Sign
+
+Submitted by: [42]Mohammad Sajid Anwar
+     __________________________________________________________________
+
+   You are given an array of @ints.
+
+   Write a script to find the sign of product of all integers in the given
+   array. The sign is 1 if the product is positive, -1 if the product is
+   negative and 0 if product is zero.
+
+Example 1
+
+Input: @ints = (-1, -2, -3, -4, 3, 2, 1)
+Output: 1
+
+The product -1 x -2 x -3 x -4 x 3 x 2 x 1 => 144 > 0
+
+Example 2
+
+Input: @ints = (1, 2, 0, -2, -1)
+Output: 0
+
+The product 1 x 2 x 0 x -2 x -1 => 0
+
+Example 3
+
+Input: @ints = (-1, -1, 1, -1, 2)
+Output: -1
+
+The product -1 x -1 x 1 x -1 x 2 => -2 < 0
+
+Task 2: Line Counts
+#*/
+//# solution by pokgopun@gmail.com
+
+package main
+
+import (
+	"io"
+	"os"
+
+	"github.com/google/go-cmp/cmp"
+)
+
+type ints []int
+
+func (is ints) productSign() int {
+	res := 1
+	for _, v := range is {
+		if v == 0 {
+			return 0
+		} else if v < 0 {
+			res *= -1
+		}
+	}
+	return res
+}
+
+func main() {
+	for _, data := range []struct {
+		input  ints
+		output int
+	}{
+		{ints{-1, -2, -3, -4, 3, 2, 1}, 1},
+		{ints{1, 2, 0, -2, -1}, 0},
+		{ints{-1, -1, 1, -1, 2}, -1},
+	} {
+		io.WriteString(os.Stdout, cmp.Diff(data.input.productSign(), data.output)) // blank if ok, otherwise show the difference
+	}
+}
diff --git a/challenge-267/pokgopun/go/ch-2.go b/challenge-267/pokgopun/go/ch-2.go
new file mode 100644
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+//# https://theweeklychallenge.org/blog/perl-weekly-challenge-267/
+/*#
+
+Task 2: Line Counts
+
+Submitted by: [43]Mohammad Sajid Anwar
+     __________________________________________________________________
+
+   You are given a string, $str, and a 26-items array @widths containing
+   the width of each character from a to z.
+
+   Write a script to find out the number of lines and the width of the
+   last line needed to display the given string, assuming you can only fit
+   100 width units on a line.
+
+Example 1
+
+Input: $str = "abcdefghijklmnopqrstuvwxyz"
+       @widths = (10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10
+,10,10,10,10,10)
+Output: (3, 60)
+
+Line 1: abcdefghij (100 pixels)
+Line 2: klmnopqrst (100 pixels)
+Line 3: uvwxyz (60 pixels)
+
+Example 2
+
+Input: $str = "bbbcccdddaaa"
+       @widths = (4,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,
+10,10,10,10,10)
+Output: (2, 4)
+
+Line 1: bbbcccdddaa (98 pixels)
+Line 2: a (4 pixels)
+     __________________________________________________________________
+
+   Last date to submit the solution 23:59 (UK Time) Sunday 5th May 2024.
+     __________________________________________________________________
+
+SO WHAT DO YOU THINK ?
+#*/
+//# solution by pokgopun@gmail.com
+
+package main
+
+import (
+	"io"
+	"os"
+
+	"github.com/google/go-cmp/cmp"
+)
+
+const lim int = 100
+
+type Answer struct {
+	Lc, L int
+}
+
+type text string
+
+func (txt text) lc(widths []int) Answer {
+	var l, lc, w int
+	lc = 1
+	var b byte
+	for _, b = range []byte(txt) {
+		w = widths[b-97]
+		l += w
+		if l > lim {
+			lc++
+			l = w
+		}
+	}
+	return Answer{lc, l}
+}
+
+func main() {
+	for _, data := range []struct {
+		str    text
+		widths []int
+		ans    Answer
+	}{
+		{"abcdefghijklmnopqrstuvwxyz", []int{10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10}, Answer{3, 60}},
+		{"bbbcccdddaaa", []int{4, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10}, Answer{2, 4}},
+	} {
+		io.WriteString(os.Stdout, cmp.Diff(data.str.lc(data.widths), data.ans)) // blank if ok,, otherwise show the difference
+	}
+}