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Changed 2 functions in binaryheap.java #2

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Changed 2 functions in binaryheap.java #2

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4 changes: 2 additions & 2 deletions src/com/jwetherell/algorithms/data_structures/BinaryHeap.java
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Original file line number Diff line number Diff line change
Expand Up @@ -341,7 +341,7 @@ public T[] getHeap() {
*/
@Override
public T getHeadValue() {
if (array.length == 0) return null;
if (array.length == 0 || size == 0) return null;
return array[0];
}

Expand Down Expand Up @@ -372,7 +372,7 @@ public String toString() {
protected static class HeapPrinter {

public static <T extends Comparable<T>> String getString(BinaryHeapArray<T> tree) {
if (tree.array.length == 0)
if (tree.array.length == 0 || size == 0)
return "Tree has no nodes.";

T root = tree.array[0];
Expand Down