analysisAndzj/src/main/java/cn/gyee/tamplate/util/DoubleUtils.java

package cn.gyee.tamplate.util;

import java.math.BigDecimal;

/**
 * @ClassName : DoubleUtils
 * @Author : xieshengjie
 * @Date: 2021/3/6 17:48
 * @Description : 对单列统计过滤null
 */
public class DoubleUtils {
    public static Double ifNullSet0(Double in) {
         if (in != null) {
                 return in;
            }
       return 0.0;
    }

    public static Integer ifNullSet0(Integer in) {
        if (in != null) {
            return in;
        }
        return 0;
    }

     public static Double sum(Double ...in){
        Double result = 0.0;
        for (int i = 0; i < in.length; i++){
                result = result+(ifNullSet0(in[i]));
            }
        return result;
    }

    public static String hb(String ...in){
        String result = "";
        for (int i = 0; i < in.length; i++){
            result = result+in[i];
        }
        return result;
    }

    public static Integer sum(Integer ...in) {
        Integer result = 0;
        for (int i = 0; i < in.length; i++){
            result = result+(ifNullSet0(in[i]));
        }
        return result;
    }

    public static Double max(Double ...in){
        Double result = 0.0;
        for (int i = 0; i < in.length; i++){
            if (result<ifNullSet0(in[i])){
                result=ifNullSet0(in[i]);
            }
        }
        return result;
    }

    public static Double min(Double ...in){
        Double result = 0.0;
        for (int i = 0; i < in.length; i++){
            if (i==0){
                result=ifNullSet0(in[0]);
            }
            if (result>ifNullSet0(in[i])){
                result=ifNullSet0(in[i]);
            }
        }
        return result;
    }
    public static Double ave(Double ...in){
        if(in.length==0){
            return 0.0;
        }else{
            return sum(in)/in.length;
        }

    }

    /**
     *
     * @param numA 数字A
     * @param numB 数字B
     * @param operate 运算符
     * @return
     */
    public static double GetResult(double numA, double numB, String operate){
        double res = 0;
        BigDecimal bigA = new BigDecimal(Double.toString(numA));
        BigDecimal bigB = new BigDecimal(Double.toString(numB));
        switch (operate) {

            case "+":
                res = bigA.add(bigB).doubleValue();
                break;
            case "-":
                res = bigA.subtract(bigB).doubleValue();
                break;
            case "*":
                res = bigA.multiply(bigB).doubleValue();
                break;
            case "/":
                res = bigA.divide(bigB).doubleValue();
                break;
            default :
                System.out.println("运算符不合法~");
                break;
        }
        return res;
    }



}