Maximum Repeating Substring LeetCode solution in Java

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class Solution {
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  public int maxRepeating(String s, String w) {
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    if (w.length() > s.length()) return 0;
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    int ans = 0;
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    StringBuilder sb = new StringBuilder("");
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    while (sb.length() <= s.length()) {
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      sb.append(w);
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      if (s.contains(sb)) ans++;
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      else break;
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    }
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    return ans;
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  }
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}