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Fix: use Object.equals for camparison in LZ78 #7142

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Fix: use Object.equals for camparison in LZ78 #7142

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7 changes: 4 additions & 3 deletions src/main/java/com/thealgorithms/compression/LZ78.java
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Original file line number Diff line number Diff line change
Expand Up @@ -4,7 +4,7 @@
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import java.util.objects;
/**
* An implementation of the Lempel-Ziv 78 (LZ78) compression algorithm.
* <p>
Expand Down Expand Up @@ -97,12 +97,13 @@ public static List<Token> compress(String text) {
}

// Handle remaining phrase at end of input
if (currentNode != root) {
if (!currentNode.equals(root)) {
compressedOutput.add(new Token(lastMatchedIndex, END_OF_STREAM));
}

return compressedOutput;
}
}


/**
* Decompresses a list of LZ78 tokens back into the original string.
Expand Down
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