谁能告诉我为什么要在2000个元素的列表上运行此代码时为什么要用掉堆空间?
public static <T extends Comparable <? super T>> void insertionSort2(List<T> portion){
int i = 0;
int j = 0;
T value;
//List <T> sorted = new LinkedList<T>();
// goes through the list
for (i = 1; i < portion.size(); i++) {
// takes each value of the list
value = (T) portion.remove(i);
// the index j takes the value of I and checks the rest of the array
// from the point i
j = i - 1;
while (j >= 0 && (portion.get(j).compareTo(value) >= 0)) {
portion.add(j + 1, portion.get(j));
j--;
}
// put the value in the correct location.
portion.add(j + 1, value);
}
}
最佳答案
这似乎可以解决您的方法:
while (j >= 0 && (portion.get(j).compareTo(value) >= 0)) {
portion.add(j, portion.remove(j));
您的代码会不断添加元素,而不是移动它们。