variation.java

NetFlow可用于网络规划、负载均衡、安全监控等.NetFlow分析软件

package cai.utils;

/**
 * <p>Title: </p>
 *
 * <p>Description: </p>
 *
 * <p>Copyright: Copyright (c) 2005</p>
 *
 * <p>Company: </p>
 *
 * @author not attributable
 * @version 1.0
 */
public class Variation {
    private static Variation instance = new Variation();
    long[] keys = new long[100];
    long[] values = new long[100];
    int index = 0;
    private Variation() {
    }

    public static Variation getInstance() {
        return instance;
    }

    public static void main(String[] args) {
        Variation variation = new Variation();
    }
//    public long getKey(int idx){
//        if (idx<100){
//            return keys[idx];
//        }
//        return 0;
//    }
    public synchronized void setVary(long key, long value) {
        int theKeyIdx = findKeyIdx(key);
        if (theKeyIdx==-1){
            keys[index] = key;
            values[index] = value;
            index++;
        }else{
//            keys[theKeyIdx]=key;
            values[theKeyIdx]=value;
        }
    }

    public synchronized boolean judgeVary(long key, long value) {
        int idx = findKeyIdx(key);
        if (idx!=-1){
            if (values[idx] > value) {
                if (values[idx] - value < 2000000) {
                    return true;
                }
            } else {
                if (value - values[idx] < 2000000) {
                    return true;
                }
            }
        }
        return false;
    }
    public synchronized boolean judgeVary(long value){
        for(int idx=0;idx<index;idx++){
            if (values[idx] > value) {
                if (values[idx] - value < 2000000) {
                    return true;
                }
            } else {
                if (value - values[idx] < 2000000) {
                    return true;
                }
            }
        }
        return false;
    }
    private int findKeyIdx(long key) {
        for (int i = 0; i < index; i++) {
            if (keys[i] == key) {
                return i;
            }
        }
        return -1;
    }
}