Answer:
Explanation:
The following code is written in Java and creates the recursive function to find the longest common substring as requested.
  static int lengthOfLongestSubsequence(String X, String Y) {
        int m = X.length();
        int n = Y.length();
        if (m == 0 || n == 0) {
            return 0;
        }
        if (X.charAt(m - 1) == Y.charAt(n - 1)) {
            return 1 + lengthOfLongestSubsequence(X, Y);
        } else {
            return Math.max(lengthOfLongestSubsequence(X, Y),
                    lengthOfLongestSubsequence(X, Y));
        }
    }
 
        
             
        
        
        
Definition
URL a.k.a uniform resource locater, is simply the address of a World Wide Webpage. 
Sentence example: 
"Type a URL into a browser's address bar."
        
             
        
        
        
Answer:
Explanation:
With an anti-virus, we can search, detect, and delete malware like spyware, worms, Trojans, rootkits, pseudoviruses, etc.
An anti-virus can detect virus with several methods like:
- Digital signature
- Heuristic detection
- Behavior detection
- Sandbox detection
Is necessary for personal laptops and desktops, even in companies hardware.