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  1. import java.util.*;
  2. import java.lang.*;
  3. import java.io.*;
  4.  
  5. class Ideone
  6. {
  7. 	public static class stack
  8. 	{
  9. 		char arr[] = new char[10];
  10. 		int current;
  11. 		stack(){current = 0;};
  12. 		void push(char x)
  13. 		{
  14. 			arr[current] = x;
  15. 			current++;
  16. 		}
  17. 		void pop()
  18. 		{
  19. 			current--;
  20. 		}
  21. 		char back()
  22. 		{
  23. 			return arr[current-1];
  24. 		}
  25. 		int size()
  26. 		{
  27. 			return current;
  28. 		}
  29. 	};
  30. 	public static void main (String[] args) throws java.lang.Exception
  31. 	{
  32. 		String brace;
  33. 		Scanner input = new Scanner(System.in);
  34. 		brace = input.nextLine();
  35. 		stack x = new stack();
  36. 		char a = brace.charAt(0);
  37. 		if(a == '(' || a == '{' || a== '[') 
  38. 		{
  39. 			for(int i=0;i<brace.length();i++)
  40. 			{
  41. 				a = brace.charAt(i);
  42. 				if(a == '(' || a == '{' || a== '[')
  43. 					x.push(a);
  44. 				else if(Math.abs(a - x.back()) < 3 && x.size() != 0)
  45. 				{
  46.             				x.pop();
  47. 				} else
  48. 				{
  49. 					System.out.println("No");
  50. 					System.exit(0);
  51. 				}
  52. 			}
  53. 			if(x.size() == 0)
  54. 			{
  55. 				System.out.println("Yes");
  56. 			} else System.out.println("No");
  57. 		}
  58. 		else 
  59. 		{
  60. 			System.out.println("No");
  61. 			System.exit(0);
  62. 		}
  63. 	}
  64. }
Success #stdin #stdout 0.05s 4640768KB
comments (?)
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({})
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Yes
https://ideone.com/mGsGcV
language:
Java (HotSpot 12)
created:
6 years ago
visibility:
public

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