java ta-lib 计算移动标准差，金融滚动标准差计算

依赖ta-lib包, 可以计算滚动的标准差

<!-- https://mvnrepository.com/artifact/com.tictactec/ta-lib -->
<dependency>
    <groupId>com.tictactec</groupId>
    <artifactId>ta-lib</artifactId>
    <version>0.4.0</version>
</dependency>
 

package test;

import com.tictactec.ta.lib.Core;
import com.tictactec.ta.lib.MInteger;

public class Stdtest {
	public static void main(String[] args) {
		double[] zf = {1d,2d,3d,4d,5d,6d,7d,8d,9d,10,12,14};
		Core core = new Core();
		MInteger outBegIdx = new MInteger();
	    MInteger outNBElement = new MInteger();
	    double[] std = new double[zf.length];
	    //core.stdDev(startIdx, endIdx, inReal, optInTimePeriod, optInNbDev, outBegIdx, outNBElement, outReal)
		//startIdx开始计算的索引，不是数据前推用到的索引，是真正要输出数据的开始索引，大于optInTimePeriod时是从startIdx开始计算的
	    //endIdx 结束计算的索引&#