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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class Ideone
  9. {
  10. 	public class Expression {
  11.     	private String textExpression = "";
  12. 	    public Double[] args = {null, null};
  13. 	    public char operation;
  14.  
  15. 	    // Тут опущен код сеттеров и некоторых операций
  16. 	}
  17.  
  18. 	public static void main (String[] args) throws java.lang.Exception
  19. 	{
  20. 		// your code goes here
  21. 	}
  22.  
  23. 	/**
  24.      * Обработка простых операций +,-,*,/
  25.      * @return
  26.      */
  27.     public Double simpleOperation(Expression expr) {
  28.         double result = Double.NaN;
  29.         switch (expr.operation) {
  30.             case '+':
  31.                 result = expr.args[0] + expr.args[1];
  32.             case '-':
  33.                 result = expr.args[0] - expr.args[1];
  34.             case '*':
  35.                 result = expr.args[0] * expr.args[1];
  36.             case '/':
  37.                 result = expr.args[0] / expr.args[1];
  38.             default:
  39.             	// В Яве так делать нельзя
  40.             	// result = null;
  41.         }
  42.         return result;
  43.     }
  44. }
Success #stdin #stdout 0.12s 46844KB
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https://ideone.com/P0gcHY
language:
Java (HotSpot 12)
created:
4 years ago
visibility:
public

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