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Copy pathMyListPerformanceTest.java
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87 lines (73 loc) · 3.19 KB
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package collection.list;
public class MyListPerformanceTest {
public static void main(String[] args) {
int size = 50_000;
System.out.println("==MyArrayList 추가");
addFirst(new MyArrayList<>(), size);
addMid(new MyArrayList<>(), size);
MyArrayList<Integer> arrayList = new MyArrayList<>();
addLast(arrayList, size);
System.out.println("==MyLinkedList 추가");
addFirst(new MyLinkedList<>(), size);
addMid(new MyLinkedList<>(), size);
MyLinkedList<Integer> linkedList = new MyLinkedList<>();
addLast(linkedList, size);
int loop = 10000;
System.out.println("==MyArrayList 조회==");
getIndex(arrayList, loop, 0);
getIndex(arrayList, loop, size/2);
getIndex(arrayList, loop, size-1);
System.out.println("==MyLinkedList 조회==");
getIndex(linkedList, loop, 0);
getIndex(linkedList, loop, size/2);
getIndex(linkedList, loop, size-1);
System.out.println("==MyArrayList 검색==");
search(arrayList, loop, 0);
search(arrayList, loop, size/2);
search(arrayList, loop, size-1);
System.out.println("==MyLinkedList 검색==");
search(linkedList, loop, 0);
search(linkedList, loop, size/2);
search(linkedList, loop, size-1);
}
private static void getIndex(MyList<Integer> list, int loop, int index) {
long startTime = System.currentTimeMillis();
for (int i = 0; i < loop; i++) {
list.get(index);
}
long endTime = System.currentTimeMillis();
System.out.println("index: " + index +", 반복: " + loop + ", 계산 시간: " + (endTime - startTime) + "ms");
}
private static void addFirst(MyList<Integer> list, int size) {
long startTime = System.currentTimeMillis();
for (int i = 0; i < size; i++) {
list.add(0, i);
}
long endTime = System.currentTimeMillis();
System.out.println("앞에 추가 - 크기: " + size + ", 계산 시간: "+ (endTime - startTime) + "ms");
}
private static void addMid(MyList<Integer> list, int size) {
long startTime = System.currentTimeMillis();
for (int i = 0; i < size; i++) {
list.add(i / 2, i);
}
long endTime = System.currentTimeMillis();
System.out.println("평균 추가 - 크기: " + size + ", 계산 시간: "+ (endTime - startTime) + "ms");
}
private static void addLast(MyList<Integer> list, int size) {
long startTime = System.currentTimeMillis();
for (int i = 0; i < size; i++) {
list.add(i);
}
long endTime = System.currentTimeMillis();
System.out.println("뒤에 추가 - 크기: " + size + ", 계산 시간: "+ (endTime - startTime) + "ms");
}
private static void search(MyList<Integer> list, int loop, int value){
long startTime = System.currentTimeMillis();
for (int i = 0; i < loop; i++) {
list.indexOf(value);
}
long endTime = System.currentTimeMillis();
System.out.println("findValue : " + value + ", 반복 : " + loop + ",계산 시간 : " + (endTime - startTime) + "ms");
}
}