From 5d7ee2e5028cb283735b6788fa046843ed1f0821 Mon Sep 17 00:00:00 2001
From: Julien Dessaux
Date: Fri, 10 Dec 2021 21:41:37 +0100
Subject: Added solutions for 10th day : syntax scoring

---
 2021/10/first.go | 66 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 66 insertions(+)
 create mode 100644 2021/10/first.go

(limited to '2021/10/first.go')

diff --git a/2021/10/first.go b/2021/10/first.go
new file mode 100644
index 0000000..0c96fe8
--- /dev/null
+++ b/2021/10/first.go
@@ -0,0 +1,66 @@
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+)
+
+type stack []byte
+
+func (s *stack) push(b byte) {
+	*s = append(*s, b)
+}
+
+func (s *stack) pop() *byte {
+	l := len(*s)
+	if l == 0 {
+		return nil
+	} else {
+		elt := (*s)[l-1]
+		*s = (*s)[:l-1]
+		return &elt
+	}
+}
+
+func main() {
+	score := 0
+	s := make(stack, 0)
+
+	scanner := bufio.NewScanner(os.Stdin)
+out:
+	for scanner.Scan() {
+		line := scanner.Text()
+		for i := 0; i < len(line); i++ {
+			c := line[i]
+			if c == '(' || c == '[' || c == '{' || c == '<' {
+				s.push(c)
+				continue
+			}
+			b := s.pop()
+			switch c {
+			case ')':
+				if *b != '(' {
+					score += 3
+					continue out
+				}
+			case ']':
+				if *b != '[' {
+					score += 57
+					continue out
+				}
+			case '}':
+				if *b != '{' {
+					score += 1197
+					continue out
+				}
+			case '>':
+				if *b != '<' {
+					score += 25137
+					continue out
+				}
+			}
+		}
+	}
+	fmt.Println(score)
+}
-- 
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