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SPL(Structured Process Language) A programming language specially for structured data computing.
package com.scudata.dm;
/**
* long????
* @author WangXiaoJun
*
*/
public class LongArray {
private long []datas; // Ԫ??ֵ????
private int size; // Ԫ????
/**
* ????long????
*/
public LongArray() {
this(8);
}
/**
* ????long????
* @param capacity ??ʼ????
*/
public LongArray(int capacity) {
datas = new long[capacity];
}
/**
* ȡԪ????
* @return
*/
public int size() {
return size;
}
/**
* ????Ԫ??ֵ??ɵ?????
* @return
*/
public long[] toArray() {
if (datas.length == size) {
return datas;
}
long []tmp = new long[size];
System.arraycopy(datas, 0, tmp, 0, size);
return tmp;
}
/**
* ȡָ??λ?õ?longֵ
* @param index λ?ã???0??ʼ????
* @return long
*/
public long get(int index) {
return datas[index];
}
/**
* ????һ??longֵ????????
* @param value
*/
public void add(long value) {
ensureCapacity(size+1);
datas[size++] = value;
}
/**
* ȷ????????С??ָ????С
* @param mincap ????
*/
public void ensureCapacity(int mincap) {
if(mincap > datas.length) {
int newcap = (datas.length * 3)/2 + 1;
long []olddata = datas;
datas = new long[newcap < mincap ? mincap : newcap];
System.arraycopy(olddata, 0, datas, 0, size);
}
}
}