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Find the longest common substring between two Strings

 Ex:-  Longest common substring or subsequence between "concatenation" and "decatenation" is "catenation".

ex:-  Between "ABABC" and "BABA"  ==> "BAB"


Java

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 import java.util.Scanner;
 public class LCS{
     public static void main(String []args){
        Scanner sc = new Scanner(System.in);
        System.out.println("Enter first string:");
        String str1 = sc.next();
        System.out.println("Enter second string:");
        String str2 = sc.next();
        System.out.print(longestCommonSubstring(str1, str2));
     }
     public static String longestCommonSubstring(String str1, String str2){
         for(int i=0; i<str1.length(); i++){
            String temp = str1.substring(i);
            if(str2.contains(temp))
                return temp;
        }
        return "Not Found";
     }
 }

Python

def longestCommonSubstring(str1, str2):
    for i in range(0,len(str1)):
        if str1[i:] in str2:
            return str1[i:]
    return "Not Found"

str1 = input("Enter first string:")
str2 = input("Enter second string:")
print(longestCommonSubstring(str1, str2))

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