vault backup: 2024-03-21 22:58:58

Semester 2/Programming 2/Week 10 Revision/Q3.md

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+Recursion via factorial function
+```java
+int fact(int n)
+    {
+	    int result;
+	    if(n==0 || n==1)
+		    return 1;
+
+       result = fact(n-1) * n;
+       return result;
+    }
+```
+Since factorial(0) or factorial(1) is just 1, we return 1 in these scenarios
+If we have factorial(2), we would do factorial(1)\*2 = 2
+fact(5) = factorial(4) \* 5 = 5\*4\*3\*2\*1 = 120