From 6fce822def6958f9e8f491ad2b32901d61e39994 Mon Sep 17 00:00:00 2001
From: xuu <me@sour.is>
Date: Wed, 13 Dec 2023 17:02:16 -0700
Subject: [PATCH] chore: add day13

---
 template/example.txt |  6 ------
 tools.go             | 16 ++++++++++++++++
 2 files changed, 16 insertions(+), 6 deletions(-)

diff --git a/template/example.txt b/template/example.txt
index c5bec3a..e69de29 100644
--- a/template/example.txt
+++ b/template/example.txt
@@ -1,6 +0,0 @@
-???.### 1,1,3
-.??..??...?##. 1,1,3
-?#?#?#?#?#?#?#? 1,3,1,6
-????.#...#... 4,1,1
-????.######..#####. 1,6,5
-?###???????? 3,2,1
\ No newline at end of file
diff --git a/tools.go b/tools.go
index 6c41c04..f3e239d 100644
--- a/tools.go
+++ b/tools.go
@@ -250,3 +250,19 @@ func ABS(i int) int {
 	}
 	return i
 }
+
+func Transpose[T any](matrix [][]T) [][]T {
+	rows, cols := len(matrix), len(matrix[0])
+	
+	m := make([][]T, cols)
+	for i := range m {
+		m[i] = make([]T, rows)
+	}
+	
+	for i := 0; i < cols; i++ {
+		for j := 0; j < rows; j++ {
+			m[i][j] = matrix[j][i]
+		}
+	}
+	return m
+}
\ No newline at end of file