Binary String With Substrings Representing 1 To N LeetCode solution in Java

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class Solution {
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  public boolean queryString(String s, int n) {
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    for (int i = 1; i <= n; i++) {
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      String binary = Integer.toBinaryString(i);
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      if (!s.contains(binary)) return false;
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    }
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    return true;
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  }
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}