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33 lines
752 B
33 lines
752 B
package N;
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import java.util.List;
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import java.util.Scanner;
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public class Main {
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public static void main(String[] args) {
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// TODO Auto-generated method stub
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Scanner scan = new Scanner(System.in);
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int i = scan.nextInt();
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switch(i) {
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case 1://计算e^x
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break;
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case 2://计算logax
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break;
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case 3://计算加减乘除
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Scanner scanner=new Scanner(System.in);
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System.out.println("输入表达式：");
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String expression=scanner.next();
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Calculation calculation=new Calculation();
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List<String> rpnList=calculation.InfixtoList(expression);
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List<String> tr=calculation.ListtoSuffix(rpnList);
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int res=calculation.calculate(tr);
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System.out.println(res);
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break;
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case 4://计算三角函数
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break;
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}
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}
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}
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