气象逆温计算用java实现

需求

实现

public BigDecimal fucInversion(List list) {
		//逆温
        BigDecimal val = null;
        //开始高度层
        BigDecimal firstVal = null;
        //结束高度层
        BigDecimal finalVal;
        for (int i = 0; i < list.size(); i++) {
            //i + 1 < list.size
            if (i < list.size() - 1) {
                BigDecimal sub = list.get(i).subtract(list.get(i + 1));
                if (val == null && sub.compareTo(BigDecimal.ZERO)<0) {
                    firstVal = list.get(i);
                    val = sub;
                }else if (val!=null && sub.compareTo(BigDecimal.ZERO)<0){
                    finalVal = list.get(i + 1);
                    val = firstVal.subtract(finalVal);
                }else if (val!=null&& sub.compareTo(BigDecimal.ZERO)>=0){
                    return val;
                }
            }
        }
        return val;
    }