English
- package com.company.section1;
- import java.util.HashMap;
- /**
- * @author cbf4Life cbf4life@126.com
- * I'm glad to share my knowledge with you all.
- * 减法表达式解析
- */
- public class SubExpression extends SymbolExpression {
- public SubExpression(Expression _left,Expression _right){
- super(_left,_right);
- }
- //解析就是减法运算
- public int interpreter(HashMap<String, Integer> var) {
- return super.left.interpreter(var) - super.right.interpreter(var);
- }
- }
