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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 static void main (String[] args) throws java.lang.Exception
  11. 	{
  12. 		// 2,1,4,3
  13. 		int[] arr = {2,2};
  14. 		int res = playerOpt(arr);
  15. 		System.out.println(res);
  16. 	}
  17.  
  18. 		public static int playerOpt(int[] arr){
  19. 		int n=arr.length;
  20. 		int p1=0,p2=0,turn=1;
  21. 		for(int i=0;i<n;i++){
  22. 			if(turn == 1){
  23. 				p1+=arr[i];
  24. 				if(arr[i] % 2==0){
  25. 					reverse(arr,i+1,n-1);
  26. 				}
  27. 				turn=2;
  28.  
  29. 			}else{
  30. 					p2+=arr[i];
  31. 					if(arr[i] % 2==0){
  32. 					reverse(arr,i+1,n-1);
  33. 				}
  34. 				turn = 1;
  35. 			}
  36. 			System.out.println(Arrays.toString(arr)+" p1-->"+p1+"p2 -->"+p2);
  37. 		}
  38. 		return p1-p2;
  39. 	}
  40.  
  41. 	public static int player(int[] arr){
  42. 		int n=arr.length;
  43. 		int p1=0,p2=0,turn=1;
  44. 		for(int i=0;i<n;i++){
  45. 			if(turn == 1){
  46. 				p1+=arr[i];
  47. 				if(arr[i] % 2==0){
  48. 					reverse(arr,i+1,n-1);
  49. 				}
  50. 				turn=2;
  51.  
  52. 			}else{
  53. 					p2+=arr[i];
  54. 					if(arr[i] % 2==0){
  55. 					reverse(arr,i+1,n-1);
  56. 				}
  57. 				turn = 1;
  58. 			}
  59. 			System.out.println(Arrays.toString(arr)+" p1-->"+p1+"p2 -->"+p2);
  60. 		}
  61. 		return p1-p2;
  62. 	}
  63.  
  64. 	public static void reverse(int []arr,int s,int e){
  65. 		if(s >= arr.length) return;
  66. 		while(s <= e){
  67. 			int temp= arr[s];
  68. 			arr[s]=arr[e];
  69. 			arr[e] = temp;
  70. 			s++;
  71. 			e--;
  72. 		}
  73. 	}
  74. }
Success #stdin #stdout 0.19s 55936KB
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Standard input is empty
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[2, 2] p1-->2p2 -->0
[2, 2] p1-->2p2 -->2
0
https://ideone.com/BMY5dX
language:
Java (HotSpot 12)
created:
21 days ago
visibility:
public

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