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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. 	private static boolean checkOverlap(String a, String b, String c) {
  11. 		Boolean[][][] memoize = new Boolean[a.length()+1][b.length()+1][c.length()+1];
  12. 		return checkOverlap(a, b, c, 0, 0, 0, memoize);
  13. 	}
  14. 	private static boolean checkOverlap(
  15. 		String a
  16. 	,   String b
  17. 	,   String c
  18. 	,   int pa
  19. 	,   int pb
  20. 	,   int pc
  21. 	,   Boolean[][][] memoize
  22. 	) {
  23. 		Boolean res = memoize[pa][pb][pc];
  24. 		if (res != null) {
  25. 			return (boolean)res;
  26. 		}
  27.         if (pa == a.length() && pb == b.length() && pc == c.length()) {
  28.         	res = true;
  29.         } else if (pc == c.length()) {
  30.         	res = false;
  31.         } else {
  32.             res = false;
  33.             if (pa != a.length() && c.charAt(pc) == a.charAt(pa) && checkOverlap(a, b, c, pa+1, pb, pc+1, memoize)) {
  34.             	res = true;
  35.             } else if (pb != b.length() && c.charAt(pc) == b.charAt(pb) && checkOverlap(a, b, c, pa, pb+1, pc+1, memoize)) {
  36.             	res = true;
  37.             }
  38.         }
  39.         return (memoize[pa][pb][pc] = res);
  40. 	}
  41. 	public static void main (String[] args) throws java.lang.Exception
  42. 	{
  43. 		boolean r1 = checkOverlap("xxy", "xxz", "xxzxxy");
  44. 		System.out.println(r1);
  45. 		boolean r2 = checkOverlap("xxyxxy", "xxzxxz", "xxzxxyxxyxxz");
  46. 		System.out.println(r2);
  47. 		boolean r3 = checkOverlap("xxy", "xxy", "xxzxxyxxyxxz");
  48. 		System.out.println(r3);
  49. 	}
  50. }
Success #stdin #stdout 0.07s 380160KB
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https://ideone.com/LGldVW
language:
Java (HotSpot 12)
created:
12 years ago
visibility:
public

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