java - Bizzare Java 无效赋值运算符错误

Question

public class MaxHeap<T extends Comparable<T>> implements Heap<T>{
 private T[] heap;
 private int lastIndex;
 private static final int defaultInitialCapacity = 25;

 public void add(T newItem) throws HeapException{
  if (lastIndex < Max_Heap){
   heap[lastIndex] = newItem;
   int place = lastIndex;
   int parent = (place – 1)/2; //ERROR HERE**********
   while ( (parent >=0) && (heap[place].compareTo(heap[parent])>0)){
    T temp = heap[place];
    heap[place] = heap[parent];
    heap[parent] = temp;
    place = parent;
    parent = (place-1)/2;
  }else {
   throw new HeapException("HeapException: Heap full"); }
  }
 }

Eclipse 提示有一个:

"Syntax error on token "Invalid Character", invalid AssignmentOperator"

(place-1) 下方有红线

根本不应该有错误，因为它只是简单的算术。还是事情没那么简单？

Answer 1

您实际上并没有使用减号 (-)，而是使用了其他符号。

尝试删除它并添加另一个 - 符号。