fork download
copy 
  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 static void main (String[] args) throws java.lang.Exception
  11. 	{
  12. 		Scanner s = new Scanner(System.in);
  13. 		String st = s.nextLine();
  14. 		Stack<Integer> od = new Stack<Integer>();
  15. 		Stack<Character> op = new Stack<Character>();
  16. 		int temp;
  17. 		int flag = 0;
  18. 		for(int i =0;i<st.length();i++){
  19. 			char c = st.charAt(i);
  20.  
  21. 			if(st.charAt(i) != ' '){
  22. 				if((c<='9') && (c>='0')){
  23. 					int no = 0;
  24. 					int j=0;
  25. 					for(j =i;j<st.length();j++){
  26. 						char h = st.charAt(j);
  27. 						if(h==' ' || h=='+' || h=='-' || h=='*' || h=='/'){
  28. 							i=j-1;
  29. 							break;
  30. 						}
  31.  
  32. 						else{
  33. 							if(j==(st.length()-1))
  34. 								i = j;
  35. 							no = no*10+ (h-'0');
  36. 						}
  37.  
  38. 					}
  39.  
  40. 					od.push(no);
  41. 					if(flag == 1){
  42. 						temp = od.pop();
  43. 						int t = od.pop();
  44. 						if(op.pop() == '*')
  45. 							od.push(t*temp);
  46. 						else
  47. 							od.push(t/temp);
  48. 						flag =0;
  49. 					}
  50. 				}
  51. 				else{
  52. 					if(c == '*' || c=='/'){
  53. 						flag = 1;
  54. 					}
  55. 					op.push(c);
  56. 				}
  57. 			}
  58. 		}
  59. 		Stack<Integer> od1 = new Stack<Integer>();
  60. 		Stack<Character> op1 = new Stack<Character>();
  61.  
  62. 		//System.out.println(od1);
  63. 		//System.out.println(op1);
  64. 		while(!od.empty()){
  65. 			od1.push(od.pop());
  66. 		}
  67. 		while(!op.empty()){
  68. 			op1.push(op.pop());
  69. 		}
  70. 		while(!op1.empty()){
  71. 			temp = od1.pop();
  72. 			int t= od1.pop();
  73. 			if(op1.pop() == '+')
  74. 				od1.push(t+temp);
  75. 			else
  76. 				od1.push(temp-t);
  77. 		}
  78. 		System.out.println(od1.pop());
  79.  
  80. 	}
  81. }
Success #stdin #stdout 0.1s 380608KB
comments (?)
stdin
copy 
42
stdout
copy 
42
https://ideone.com/to8EhN
language:
Java (12.0.1)
created:
8 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!