当我检查freqMap1.values()和freqMap2.values()时,它们具有相同的值,但是当我使用.equals进行检查时,它返回false。我不知道如何解决这个问题:
/**
* Created by mona on 5/26/16.
*/
import java.util.*;
public class IsomorphicStrings {
//the words "abca" and "zbxz" are isomorphic
public static boolean areIsomorphic(String s1, String s2) {
Map<Character, ArrayList<Integer>> freqMap1 = new LinkedHashMap<>();
Map<Character, ArrayList<Integer>> freqMap2 = new LinkedHashMap<>();
for (int i=0; i<s1.length(); i++) {
if (freqMap1.containsKey(s1.charAt(i))) {
freqMap1.get(s1.charAt(i)).add(i);
} else {
freqMap1.put(s1.charAt(i), new ArrayList<>(Arrays.asList(i)));
}
}
for (int i=0; i<s2.length(); i++) {
if (freqMap2.containsKey(s2.charAt(i))) {
freqMap2.get(s2.charAt(i)).add(i);
} else {
freqMap2.put(s2.charAt(i), new ArrayList<>(Arrays.asList(i)));
}
}
System.out.println(freqMap1.values());
System.out.println(freqMap2.values());
return freqMap1.values().equals(freqMap2.values());
}
public static void main(String[] args) {
String s1="foo";
String s2="app";
System.out.println(areIsomorphic(s1, s2));
}
}
这是我从打印输出中获得的结果:
[[0], [1, 2]]
[[0], [1, 2]]
false