Intersection of two strings in Java

Question

Need a Java function to find intersection of two strings. i.e. characters common to the strings.

Example:

String s1 = new String(\"Sychelless\");
St         


        

Answer 1

By means of Guava this task seems much easier:

String s1 = new String("Sychelless");
String s2 = new String("Sydney");
Set setA = Sets.newHashSet(Splitter.fixedLength(1).split(s1));
Set setB = Sets.newHashSet(Splitter.fixedLength(1).split(s2));
Sets.intersection(setA, setB);