Minimum Time to Type Word Using Special Typewriter LeetCode solution in Java

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class Solution {
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  public int minTimeToType(String word) {
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    char prevChar = 'a';
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    int totalTime = word.length();
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    for (int i = 0; i < word.length(); i++) {
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      char currChar = word.charAt(i);
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      int diff = Math.abs(currChar - prevChar);
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      totalTime += Math.min(diff, 26 - diff);
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      prevChar = currChar;
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    }
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    return totalTime;
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  }
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}