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style: enable HideUtilityClassConstructor in checkstyle (#5147)
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@@ -26,7 +26,9 @@ class MyComparator implements Comparator<HuffmanNode> {
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}
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}
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public class Huffman {
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public final class Huffman {
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private Huffman() {
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}
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// recursive function to print the
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// huffman-code through the tree traversal.
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