Created
November 13, 2016 23:47
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import java.io.*; | |
import java.util.*; | |
public class Solution { | |
private static boolean isAnagram(String a, String b) { | |
char[] a_arr = a.toCharArray(); | |
char[] b_arr = b.toCharArray(); | |
Arrays.sort(a_arr); | |
Arrays.sort(b_arr); | |
String sorted_a = new String(a_arr); | |
String sorted_b = new String(b_arr); | |
return a.equals(b); | |
} | |
private static void computeAnagramDistance(String a, String b) { | |
if (a.length() != b.length()) { | |
System.out.println(-1); | |
return; | |
} else if (isAnagram(a, b)) { | |
System.out.println(0); | |
return; | |
} | |
HashMap<Character, Integer> a_map = new HashMap<>(); | |
for (Character c : a.toCharArray()) { | |
if (a_map.containsKey(c)) { | |
a_map.put(c, a_map.get(c) + 1); | |
} else { | |
a_map.put(c, 1); | |
} | |
} | |
for (Character c : b.toCharArray()) { | |
if (a_map.containsKey(c)) { | |
a_map.put(c, a_map.get(c) - 1); | |
} else { | |
a_map.put(c, -1); | |
} | |
} | |
Integer answer = 0; | |
for (Integer i : a_map.values()) { | |
if (i != 0) { | |
answer += Math.abs(i); | |
} | |
} | |
System.out.println(answer/2); | |
} | |
public static void main(String args[] ) throws Exception { | |
/* Enter your code here. Read input from STDIN. Print output to STDOUT */ | |
Scanner cin = new Scanner(System.in); | |
int lines = cin.nextInt(); | |
while (lines > 0) { | |
String a_concat_b = cin.next(); | |
String a = a_concat_b.substring(0, (a_concat_b.length())/2); | |
String b = a_concat_b.substring((a_concat_b.length())/2); | |
computeAnagramDistance(a, b); | |
lines -= 1; | |
} | |
} | |
} |
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