pwc323 solution in go

2 files changed, 183 insertions, 0 deletions

diff --git a/challenge-323/pokgopun/go/ch-1.go b/challenge-323/pokgopun/go/ch-1.go
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+++ b/challenge-323/pokgopun/go/ch-1.go
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+//# https://theweeklychallenge.org/blog/perl-weekly-challenge-323/
+/*#
+
+Task 1: Increment Decrement
+
+Submitted by: [47]Mohammad Sajid Anwar
+     __________________________________________________________________
+
+   You are given a list of operations.
+
+   Write a script to return the final value after performing the given
+   operations in order. The initial value is always 0.
+Possible Operations:
+++x or x++: increment by 1
+--x or x--: decrement by 1
+
+Example 1
+
+Input: @operations = ("--x", "x++", "x++")
+Output: 1
+
+Operation "--x" =>  0 - 1 => -1
+Operation "x++" => -1 + 1 =>  0
+Operation "x++" =>  0 + 1 =>  1
+
+Example 2
+
+Input: @operations = ("x++", "++x", "x++")
+Output: 3
+
+Example 3
+
+Input: @operations = ("x++", "++x", "--x", "x--")
+Output: 0
+
+Operation "x++" => 0 + 1 => 1
+Operation "++x" => 1 + 1 => 2
+Operation "--x" => 2 - 1 => 1
+Operation "x--" => 1 - 1 => 0
+
+Task 2: Tax Amount
+#*/
+//# solution by pokgopun@gmail.com
+
+package main
+
+import (
+	"io"
+	"os"
+
+	"github.com/google/go-cmp/cmp"
+)
+
+type operations []string
+
+func (ops operations) process() int {
+	r := 0
+	sigm := byte('-')
+	sigp := byte('+')
+	for _, op := range ops {
+		for _, sig := range []byte{op[0], op[2]} {
+			if sig == sigm {
+				r--
+			} else if sig == sigp {
+				r++
+			} else {
+				continue
+			}
+			break
+		}
+	}
+	return r
+}
+
+func main() {
+	for _, data := range []struct {
+		input  operations
+		output int
+	}{
+		{operations{"--x", "x++", "x++"}, 1},
+		{operations{"x++", "++x", "x++"}, 3},
+		{operations{"x++", "++x", "--x", "x--"}, 0},
+	} {
+		io.WriteString(os.Stdout, cmp.Diff(data.input.process(), data.output)) // blank if ok, otherwise show the difference
+	}
+}
diff --git a/challenge-323/pokgopun/go/ch-2.go b/challenge-323/pokgopun/go/ch-2.go
new file mode 100644
index 0000000000..a1662f5a27
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+++ b/challenge-323/pokgopun/go/ch-2.go
@@ -0,0 +1,97 @@
+//# https://theweeklychallenge.org/blog/perl-weekly-challenge-323/
+/*#
+
+Task 2: Tax Amount
+
+Submitted by: [48]Mohammad Sajid Anwar
+     __________________________________________________________________
+
+   You are given an income amount and tax brackets.
+
+   Write a script to calculate the total tax amount.
+
+Example 1
+
+Input: $income = 10, @tax = ([3, 50], [7, 10], [12,25])
+Output: 2.65
+
+1st tax bracket upto  3, tax is 50%.
+2nd tax bracket upto  7, tax is 10%.
+3rd tax bracket upto 12, tax is 25%.
+
+Total Tax => (3 * 50/100) + (4 * 10/100) + (3 * 25/100)
+          => 1.50 + 0.40 + 0.75
+          => 2.65
+
+Example 2
+
+Input: $income = 2, @tax = ([1, 0], [4, 25], [5,50])
+Output: 0.25
+
+Total Tax => (1 * 0/100) + (1 * 25/100)
+          => 0 + 0.25
+          => 0.25
+
+Example 3
+
+Input: $income = 0, @tax = ([2, 50])
+Output: 0
+     __________________________________________________________________
+
+   Last date to submit the solution 23:59 (UK Time) Sunday 1st June 2025.
+     __________________________________________________________________
+
+SO WHAT DO YOU THINK ?
+#*/
+//# solution by pokgopun@gmail.com
+
+package main
+
+import (
+	"io"
+	"os"
+
+	"github.com/google/go-cmp/cmp"
+)
+
+type taxb struct {
+	ceil, perc float64
+}
+
+type taxbs []taxb
+
+type input struct {
+	income float64
+	tax    taxbs
+}
+
+func (in input) process() float64 {
+	var floor float64
+	var ttax, taxt float64
+	for _, tb := range in.tax {
+		if in.income >= tb.ceil {
+			taxt = tb.ceil - floor
+		} else {
+			taxt = in.income - floor
+		}
+		ttax += taxt * tb.perc / 100
+		if in.income <= tb.ceil {
+			break
+		}
+		floor = tb.ceil
+	}
+	return ttax
+}
+
+func main() {
+	for _, data := range []struct {
+		input  input
+		output float64
+	}{
+		{input{10, taxbs{taxb{3, 50}, taxb{7, 10}, taxb{12, 25}}}, 2.65},
+		{input{2, taxbs{taxb{1, 0}, taxb{4, 25}, taxb{5, 50}}}, 0.25},
+		{input{0, taxbs{taxb{2, 50}}}, 0},
+	} {
+		io.WriteString(os.Stdout, cmp.Diff(data.input.process(), data.output)) // blank if ok, otherwise show the difference
+	}
+}