Merge pull request neetcode-gh#1969 from saip7795/sp/rotate_image

Create: 0048-Rotate-Image.rb

ruby/0048-rotate-image.rb

@@ -0,0 +1,25 @@
+
+def rotate(matrix)
+ l = 0
+ r = matrix.size()-1
+
+ while l< r
+ (0..(r-l-1)).each do |i|
+ top = l
+ bottom = r
+
+ top_left = matrix[top][l+i]
+
+ matrix[top][l+i] = matrix[bottom-i][l]
+
+ matrix[bottom-i][l] = matrix[bottom][r-i]
+
+ matrix[bottom][r-i] = matrix[top+i][r]
+
+ matrix[top+i][r] = top_left
+ end
+
+ r -=1
+ l +=1
+ end
+end