pwc336 solution in go

2 files changed, 266 insertions, 0 deletions

diff --git a/challenge-336/pokgopun/go/ch-1.go b/challenge-336/pokgopun/go/ch-1.go
new file mode 100644
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+++ b/challenge-336/pokgopun/go/ch-1.go
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+//# https://theweeklychallenge.org/blog/perl-weekly-challenge-336/
+/*#
+
+Task 1: Equal Group
+
+Submitted by: [42]Mohammad Sajid Anwar
+     __________________________________________________________________
+
+   You are given an array of integers.
+
+   Write a script to return true if the given array can be divided into
+   one or more groups: each group must be of the same size as the others,
+   with at least two members, and with all members having the same value.
+
+Example 1
+
+Input: @ints = (1,1,2,2,2,2)
+Output: true
+
+Groups: (1,1), (2,2), (2,2)
+
+Example 2
+
+Input: @ints = (1,1,1,2,2,2,3,3)
+Output: false
+
+Groups: (1,1,1), (2,2,2), (3,3)
+
+Example 3
+
+Input: @ints = (5,5,5,5,5,5,7,7,7,7,7,7)
+Output: true
+
+Groups: (5,5,5,5,5,5), (7,7,7,7,7,7)
+
+Example 4
+
+Input: @ints = (1,2,3,4)
+Output: false
+
+Example 5
+
+Input: @ints = (8,8,9,9,10,10,11,11)
+Output: true
+
+Groups: (8,8), (9,9), (10,10), (11,11)
+
+Task 2: Final Score
+#*/
+//# solution by pokgopun@gmail.com
+
+package main
+
+import (
+	"github.com/google/go-cmp/cmp"
+	"io"
+	"os"
+	"slices"
+)
+
+type ints []int
+
+func (in ints) process() bool {
+	slices.Sort(in)
+	l := len(in)
+	if l < 2 {
+		return false
+	}
+	var res bool
+	for d := 2; d <= l; d++ {
+		if l%d != 0 {
+			continue
+		}
+		res = true
+		for i := d; i <= l; i += d {
+			n := in[i-d]
+			for _, v := range in[i-d+1 : i] {
+				if v != n {
+					res = false
+					goto skip
+				}
+			}
+		}
+	skip:
+		if res == true {
+			break
+		}
+	}
+	return res
+}
+
+func main() {
+	for _, data := range []struct {
+		input  ints
+		output bool
+	}{
+		{ints{1, 1, 2, 2, 2, 2}, true},
+		{ints{1, 1, 1, 2, 2, 2, 3, 3}, false},
+		{ints{5, 5, 5, 5, 5, 5, 7, 7, 7, 7, 7, 7}, true},
+		{ints{1, 2, 3, 4}, false},
+		{ints{8, 8, 9, 9, 10, 10, 11, 11}, true},
+		{ints{1, 1}, true},
+		{ints{1, 1, 1, 2, 2, 2, 3, 3, 3}, true},
+		{ints{1, 1, 1, 1, 1, 1, 3, 3, 3}, true},
+		{ints{1, 1, 1, 3, 3, 3, 3, 3, 3}, true},
+	} {
+		io.WriteString(os.Stdout, cmp.Diff(data.input.process(), data.output)) // blank if ok, otherwise show the difference
+	}
+}
diff --git a/challenge-336/pokgopun/go/ch-2.go b/challenge-336/pokgopun/go/ch-2.go
new file mode 100644
index 0000000000..0d51a7d3d4
--- /dev/null
+++ b/challenge-336/pokgopun/go/ch-2.go
@@ -0,0 +1,157 @@
+//# https://theweeklychallenge.org/blog/perl-weekly-challenge-336/
+/*#
+
+Task 2: Final Score
+
+Submitted by: [43]Mohammad Sajid Anwar
+     __________________________________________________________________
+
+   You are given an array of scores by a team.
+
+   Write a script to find the total score of the given team. The score can
+   be any integer, +, C or D. The + adds the sum of previous two scores.
+   The score C invalidates the previous score. The score D will double the
+   previous score.
+
+Example 1
+
+Input: @scores = ("5","2","C","D","+")
+Output: 30
+
+Round 1: 5
+Round 2: 5 + 2
+Round 3: 5 (invalidate the previous score 2)
+Round 4: 5 + 10 (double the previous score 5)
+Round 5: 5 + 10 + 15 (sum of previous two scores)
+
+Total Scores: 30
+
+Example 2
+
+Input: @scores = ("5","-2","4","C","D","9","+","+")
+Output: 27
+
+Round 1: 5
+Round 2: 5 + (-2)
+Round 3: 5 + (-2) + 4
+Round 4: 5 + (-2) (invalidate the previous score 4)
+Round 5: 5 + (-2) + (-4) (double the previous score -2)
+Round 6: 5 + (-2) + (-4) + 9
+Round 7: 5 + (-2) + (-4) + 9 + 5 (sum of previous two scores)
+Round 8: 5 + (-2) + (-4) + 9 + 5 + 14 (sum of previous two scores)
+
+Total Scores: 27
+
+Example 3
+
+Input: @scores = ("7","D","D","C","+","3")
+Output: 45
+
+Round 1: 7
+Round 2: 7 + 14 (double the previous score 7)
+Round 3: 7 + 14 + 28 (double the previous score 14)
+Round 4: 7 + 14 (invalidate the previous score 28)
+Round 5: 7 + 14 + 21 (sum of previous two scores)
+Round 6: 7 + 14 + 21 + 3
+
+Total Scores: 45
+
+Example 4
+
+Input: @scores = ("-5","-10","+","D","C","+")
+Output: -55
+
+Round 1: (-5)
+Round 2: (-5) + (-10)
+Round 3: (-5) + (-10) + (-15) (sum of previous two scores)
+Round 4: (-5) + (-10) + (-15) + (-30) (double the previous score -15)
+Round 5: (-5) + (-10) + (-15) (invalidate the previous score -30)
+Round 6: (-5) + (-10) + (-15) + (-25) (sum of previous two scores)
+
+Total Scores: -55
+
+Example 5
+
+Input: @scores = ("3","6","+","D","C","8","+","D","-2","C","+")
+Output: 128
+
+Round  1: 3
+Round  2: 3 + 6
+Round  3: 3 + 6 + 9 (sum of previous two scores)
+Round  4: 3 + 6 + 9 + 18 (double the previous score 9)
+Round  5: 3 + 6 + 9 (invalidate the previous score 18)
+Round  6: 3 + 6 + 9 + 8
+Round  7: 3 + 6 + 9 + 8 + 17 (sum of previous two scores)
+Round  8: 3 + 6 + 9 + 8 + 17 + 34 (double the previous score 17)
+Round  9: 3 + 6 + 9 + 8 + 17 + 34 + (-2)
+Round 10: 3 + 6 + 9 + 8 + 17 + 34 (invalidate the previous score -2)
+Round 11: 3 + 6 + 9 + 8 + 17 + 34 + 51 (sum of previous two scores)
+
+Total Scores: 128
+     __________________________________________________________________
+
+   Last date to submit the solution 23:59 (UK Time) Sunday 31st August
+   2025.
+     __________________________________________________________________
+
+SO WHAT DO YOU THINK ?
+#*/
+//# solution by pokgopun@gmail.com
+
+package main
+
+import (
+	"io"
+	"os"
+	"strconv"
+	"github.com/google/go-cmp/cmp"
+)
+
+type ints []int
+
+func (in ints) sum() int{
+	sm := 0
+	for _, v := range in{
+		sm += v
+	}
+	return sm
+}
+
+type input []string
+
+func (in input) process() int{
+	l := len(in)
+	ns := make(ints,l)
+	i := 0
+	o := 0
+	for i < l {
+		switch v := in[i]; v{
+		case "+":
+			ns[i+o] = ns[max(0,i-2+o):i+o].sum()
+		case "C":
+			o -= 2
+		case "D":
+			ns[i+o] = 2 * ns[i-1+o]
+		default:
+			n, _ := strconv.Atoi(v)
+			ns[i+o] = n
+		}
+		i++
+	}
+	return ns[:l+o].sum()
+}
+
+func main(){
+	for _, data := range []struct{
+		input input
+		output int
+	}{
+		{input{"5","2","C","D","+"}, 30},
+		{input{"5","-2","4","C","D","9","+","+"}, 27},
+		{input{"7","D","D","C","+","3"}, 45},
+		{input{"-5","-10","+","D","C","+"}, -55},
+		{input{"3","6","+","D","C","8","+","D","-2","C","+"}, 128},
+	}{
+		io.WriteString(os.Stdout, cmp.Diff(data.input.process(),data.output)) // blank if ok, otherwise show the difference
+	}
+}