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  1. #include <stdio.h>
  2. #include <math.h>
  3. #include <stdlib.h>
  4.  
  5.  
  6. int szuk_rek(int *A, int X, int L, int R);
  7.  
  8. int main(){
  9.  
  10. 	int A[9] = {-1,2,6,7,12,15,60,428,338};
  11. 	printf("liczba jest w A[%d] = %d", szuk_rek(A, 12, 0, 6), A[szuk_rek(A, 11, 0, 9)]);
  12.  
  13.  
  14.  
  15. 	return 0;
  16. }
  17.  
  18. int szuk_rek(int *A, int X, int L, int R){
  19. 	printf("L =%d R = %d\n", L, R);
  20. 	if(A[L] > X || A[R] < X){
  21. 		return 0;
  22. 	}
  23. 	if(A[R]==X){
  24. 		return R;
  25. 	}
  26. 	if(L > R){
  27. 		return -1;
  28. 	}
  29. 	if( L == (R-1) && A[L] != X){
  30. 		printf("jestem tu, powinno wywalic blad\n");
  31. 		return -1;
  32. 	}
  33.  
  34. 	if (A[(L+R)/2]== X){
  35. 		return (L+R)/2;
  36. 	}
  37.  
  38. 	if( A[(L+R)/2] < X){
  39. 		return szuk_rek(A, X, (L + R)/2, R);
  40. 	}
  41. 	if( A[(L+R)/2] > X){
  42. 		return szuk_rek(A, X, L, (L + R)/2);
  43. 	}
  44.  
  45. }
Success #stdin #stdout 0s 2896KB
comments (?)
stdin 
Standard input is empty
stdout 
L =0 R = 9
L =0 R = 6
L =3 R = 6
liczba jest w A[4] = -1
https://ideone.com/z35qh1
language:
C++ (gcc 8.3)
created:
12 years ago
visibility:
public

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