java£ºÊÖдMyArrayLisyµÄ³£Ó÷½·¨£¬Ôöɾ¸Ä²é
package arrays.myArray;
public class MyArrayList {
private Object[] arrObj = new Object[3];
private int size = 0;
// ³¤¶È
public int size() {
return size;
}
// insert
public void add(Object obj) {
add(size,obj);
}
// update
// °ÑÇ°ÃæµÄÍùºóÒÆ¶¯
public void add(int index, Object obj) {
if(size==arrObj.length){
Object[] temp=new Object[size*2];
for(int i=0;i<arrObj.length;i++){
temp[i]=arrObj[i];
}
arrObj=temp;
}
//´ÓǰÍùºó
for (int i =size; i>index ; i--) {
arrObj[i] = arrObj[i-1];
}
arrObj[index]=obj;
size++;
}
// delete
// °ÑºóÃæµÄÍùÇ°ÒÆ¶¯
public void remove(int index) {
size--;
for (int i =index;i<size; i++) {
arrObj[i] = arrObj[i+1];
}
}
public Object get(int index) {
return arrObj[index];
}
}
Ïà¹ØÎĵµ£º
package com.njty.util;
public class Test {
private static final double EARTH_RADIUS = 6378137;
private static double rad(double d)
{
return d * Math.PI / 180.0;
}
  ......
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*/
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/**
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*/
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