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Create Isomorphic.java #290

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27 changes: 27 additions & 0 deletions Java/Isomorphic.java
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Original file line number Diff line number Diff line change
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package org.problems.strings;

import java.util.HashMap;

public class Isomorphic {

public static void main(String[] args) {
System.out.println(isIsomorphic("abc","aaa"));
}
public static boolean isIsomorphic(String s, String t) {

HashMap<Character, Character> mp1 = new HashMap<>();
HashMap<Character, Character> mp2 = new HashMap<>();
if (s.length() != t.length())
return false;
for (int i = 0; i < s.length(); i++) {
if (mp1.containsKey(s.charAt(i)) || mp2.containsKey(t.charAt(i))) {
if ( (mp1.get(s.charAt(i)) != null && mp1.get(s.charAt(i))!=t.charAt(i)) || (mp2.get(t.charAt(i))!=null && mp2.get(t.charAt(i))!=s.charAt(i)))
return false;
} else {
mp1.put(s.charAt(i), t.charAt(i));
mp2.put(t.charAt(i), s.charAt(i));
}
}
return true;
}
}