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feat:HashMap method to compare strings/AngelicaC #440

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Original file line number Diff line number Diff line change
@@ -1,12 +1,26 @@
package com.codedifferently.lesson13;

import java.util.HashMap;

public class Lesson13 {

/**
* Provide the solution to LeetCode 3146 here:
* https://leetcode.com/problems/permutation-difference-between-two-strings
*/
public int findPermutationDifference(String s, String t) {
return 0;
var stringS = new HashMap<Character, Integer>();

int totalDifference = 0;

for (int sIndex = 0; sIndex < s.length(); sIndex++) {
stringS.put(s.charAt(sIndex), sIndex);
}
for (int tIndex = 0; tIndex < t.length(); tIndex++) {
int countIndexS = stringS.put(t.charAt(tIndex), tIndex);

totalDifference += Math.abs(countIndexS - tIndex);
}
return totalDifference;
}
}