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    Java Program to find the longest repeating sequence in a string

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    Java Program to find the longest repeating sequence in a string

    In this example, we will create a java program to find the substring which has been repeated in the original string more than once.

    Program:
    
public class Main 
{  
public static String lcp(String s, String t)
{  
int n = Math.min(s.length(),t.length());  
for(int i = 0; i < n; i++)
{  
if(s.charAt(i) != t.charAt(i))
{  
return s.substring(0,i);  
}  
}  
return s.substring(0,n);  
}  
public static void main(String[] args) 
{  
String str = "acbdfghybdfachbdf";  
String lrs="";  
int n = str.length();  
for(int i = 0; i < n; i++)
{  
for(int j = i+1; j < n; j++)
{  
String x = lcp(str.substring(i,n),str.substring(j,n));  
if(x.length() > lrs.length()) lrs=x;  
}  
}  
System.out.println("Longest repeating sequence: "+lrs);  
}  
}
    Output:
    Longest repeating sequence: bdf
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