updates rotting oranges

Author: anishLearnsToCode

src/RottingOranges.java

@@ -1,3 +1,7 @@
+// https://leetcode.com/problems/rotting-oranges
+// T: O(m * n)
+// S: O(m * n)
+
 import java.util.LinkedList;
 import java.util.Queue;