pwc338 solution in go

2 files changed, 338 insertions, 0 deletions

diff --git a/challenge-338/pokgopun/go/ch-1.go b/challenge-338/pokgopun/go/ch-1.go
new file mode 100644
index 0000000000..210e1b83a8
--- /dev/null
+++ b/challenge-338/pokgopun/go/ch-1.go
@@ -0,0 +1,108 @@
+//# https://theweeklychallenge.org/blog/perl-weekly-challenge-338/
+/*#
+
+Task 1: Highest Row
+
+Submitted by: [44]Mohammad Sajid Anwar
+     __________________________________________________________________
+
+   You are given a m x n matrix.
+
+   Write a script to find the highest row sum in the given matrix.
+
+Example 1
+
+Input: @matrix = ([4,  4, 4, 4],
+                  [10, 0, 0, 0],
+                  [2,  2, 2, 9])
+Output: 16
+
+Row 1: 4  + 4 + 4 + 4 => 16
+Row 2: 10 + 0 + 0 + 0 => 10
+Row 3: 2  + 2 + 2 + 9 => 15
+
+Example 2
+
+Input: @matrix = ([1, 5],
+                  [7, 3],
+                  [3, 5])
+Output: 10
+
+Example 3
+
+Input: @matrix = ([1, 2, 3],
+                  [3, 2, 1])
+Output: 6
+
+Example 4
+
+Input: @matrix = ([2, 8, 7],
+                  [7, 1, 3],
+                  [1, 9, 5])
+Output: 17
+
+Example 5
+
+Input: @matrix = ([10, 20,  30],
+                  [5,  5,   5],
+                  [0,  100, 0],
+                  [25, 25,  25])
+Output: 100
+
+Task 2: Max Distance
+#*/
+//# solution by pokgopun@gmail.com
+
+package main
+
+import (
+	"io"
+	"os"
+
+	"github.com/google/go-cmp/cmp"
+)
+
+type ints []int
+
+func (in ints) sum() int {
+	s := 0
+	for _, v := range in {
+		s += v
+	}
+	return s
+}
+
+type input []ints
+
+func (in input) process() int {
+	s := in[0].sum()
+	for _, v := range in[1:] {
+		s = max(s, v.sum())
+	}
+	return s
+}
+
+func main() {
+	for _, data := range []struct {
+		input  input
+		output int
+	}{
+		{input{ints{4, 4, 4, 4},
+			ints{10, 0, 0, 0},
+			ints{2, 2, 2, 9}}, 16},
+		{input{ints{1, 5},
+			ints{7, 3},
+			ints{3, 5}}, 10},
+		{input{ints{1, 2, 3},
+			ints{3, 2, 1}}, 6},
+		{input{ints{2, 8, 7},
+			ints{7, 1, 3},
+			ints{1, 9, 5}}, 17},
+		{input{ints{10, 20, 30},
+			ints{5, 5, 5},
+			ints{0, 100, 0},
+			ints{25, 25, 25}}, 100},
+	} {
+		io.WriteString(os.Stdout, cmp.Diff(data.input.process(), data.output)) // blank if ok, otherwise show the difference
+	}
+}
diff --git a/challenge-338/pokgopun/go/ch-2.go b/challenge-338/pokgopun/go/ch-2.go
new file mode 100644
index 0000000000..ba921a2424
--- /dev/null
+++ b/challenge-338/pokgopun/go/ch-2.go
@@ -0,0 +1,230 @@
+//# https://theweeklychallenge.org/blog/perl-weekly-challenge-338/
+/*#
+
+Task 2: Max Distance
+
+Submitted by: [45]Mohammad Sajid Anwar
+     __________________________________________________________________
+
+   You are given two integer arrays, @arr1 and @arr2.
+
+   Write a script to find the maximum difference between any pair of
+   values from both arrays.
+
+Example 1
+
+Input: @arr1 = (4, 5, 7)
+       @arr2 = (9, 1, 3, 4)
+Output: 6
+
+With element $arr1[0] = 4
+| 4 - 9 | = 5
+| 4 - 1 | = 3
+| 4 - 3 | = 1
+| 4 - 4 | = 0
+max distance = 5
+
+With element $arr1[1] = 5
+| 5 - 9 | = 4
+| 5 - 1 | = 4
+| 5 - 3 | = 2
+| 5 - 4 | = 1
+max distance = 4
+
+With element $arr1[2] = 7
+| 7 - 9 | = 2
+| 7 - 1 | = 6
+| 7 - 3 | = 4
+| 7 - 4 | = 4
+max distance = 6
+
+max (5, 6, 6) = 6
+
+Example 2
+
+Input: @arr1 = (2, 3, 5, 4)
+       @arr2 = (3, 2, 5, 5, 8, 7)
+Output: 6
+
+With element $arr1[0] = 2
+| 2 - 3 | = 1
+| 2 - 2 | = 0
+| 2 - 5 | = 3
+| 2 - 5 | = 3
+| 2 - 8 | = 6
+| 2 - 7 | = 5
+max distance = 6
+
+With element $arr1[1] = 3
+| 3 - 3 | = 0
+| 3 - 2 | = 1
+| 3 - 5 | = 2
+| 3 - 5 | = 2
+| 3 - 8 | = 5
+| 3 - 7 | = 4
+max distance = 5
+
+With element $arr1[2] = 5
+| 5 - 3 | = 2
+| 5 - 2 | = 3
+| 5 - 5 | = 0
+| 5 - 5 | = 0
+| 5 - 8 | = 3
+| 5 - 7 | = 2
+max distance = 3
+
+With element $arr1[3] = 4
+| 4 - 3 | = 1
+| 4 - 2 | = 2
+| 4 - 5 | = 1
+| 4 - 5 | = 1
+| 4 - 8 | = 4
+| 4 - 7 | = 3
+max distance = 4
+
+max (5, 6, 3, 4) = 6
+
+Example 3
+
+Input: @arr1 = (2, 1, 11, 3)
+       @arr2 = (2, 5, 10, 2)
+Output: 9
+
+With element $arr1[0] = 2
+| 2 - 2  | = 0
+| 2 - 5  | = 3
+| 2 - 10 | = 8
+| 2 - 2  | = 0
+max distance = 8
+
+With element $arr1[1] = 1
+| 1 - 2  | = 1
+| 1 - 5  | = 4
+| 1 - 10 | = 9
+| 1 - 2  | = 1
+max distance = 9
+
+With element $arr1[2] = 11
+| 11 - 2  | = 9
+| 11 - 5  | = 6
+| 11 - 10 | = 1
+| 11 - 2  | = 9
+max distance = 9
+
+With element $arr1[3] = 3
+| 3 - 2  | = 1
+| 3 - 5  | = 2
+| 3 - 10 | = 7
+| 3 - 2  | = 1
+max distance = 7
+
+max (8, 9, 9, 7) = 9
+
+Example 4
+
+Input: @arr1 = (1, 2, 3)
+       @arr2 = (3, 2, 1)
+Output: 2
+
+With element $arr1[0] = 1
+| 1 - 3 | = 2
+| 1 - 2 | = 1
+| 1 - 1 | = 0
+max distance = 2
+
+With element $arr1[1] = 2
+| 2 - 3 | = 1
+| 2 - 2 | = 0
+| 2 - 1 | = 1
+max distance = 1
+
+With element $arr1[2] = 3
+| 3 - 3 | = 0
+| 3 - 2 | = 1
+| 3 - 1 | = 2
+max distance = 2
+
+max (2, 1, 2) = 2
+
+Example 5
+
+Input: @arr1 = (1, 0, 2, 3)
+       @arr2 = (5, 0)
+Output: 5
+
+With element $arr1[0] = 1
+| 1 - 5 | = 4
+| 1 - 0 | = 1
+max distance = 4
+
+With element $arr1[1] = 0
+| 0 - 5 | = 5
+| 0 - 0 | = 0
+max distance = 5
+
+With element $arr1[2] = 2
+| 2 - 5 | = 3
+| 2 - 0 | = 2
+max distance = 3
+
+With element $arr1[3] = 3
+| 3 - 5 | = 2
+| 3 - 0 | = 3
+max distance = 3
+
+max (4, 5, 3, 3) = 5
+     __________________________________________________________________
+
+   Last date to submit the solution 23:59 (UK Time) Sunday 14th September
+   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) md(n int) int {
+	mx := max(in[0], n) - min(in[0], n)
+	for _, v := range in[1:] {
+		mx = max(mx, max(v, n)-min(v, n))
+	}
+	return mx
+}
+
+type input struct {
+	arr1, arr2 ints
+}
+
+func (in input) process() int {
+	mx := in.arr2.md(in.arr1[0])
+	for _, v := range in.arr1[1:] {
+		mx = max(mx, in.arr2.md(v))
+	}
+	return mx
+}
+
+func main() {
+	for _, data := range []struct {
+		input  input
+		output int
+	}{
+		{input{ints{4, 5, 7}, ints{9, 1, 3, 4}}, 6},
+		{input{ints{2, 3, 5, 4}, ints{3, 2, 5, 5, 8, 7}}, 6},
+		{input{ints{2, 1, 11, 3}, ints{2, 5, 10, 2}}, 9},
+		{input{ints{1, 2, 3}, ints{3, 2, 1}}, 2},
+		{input{ints{1, 0, 2, 3}, ints{5, 0}}, 5},
+	} {
+		io.WriteString(os.Stdout, cmp.Diff(data.input.process(), data.output)) // blank if ok, otherwise show the difference
+	}
+}