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  1. #include <stdio.h>
  2. #include <math.h>
  3. #include <stdlib.h>
  4.  
  5. int szuk_rek(int *A, int X, int L, int R);
  6.  
  7. int main(){
  8.  
  9.         int A[9] = {-1,2,6,7,12,15,60,428,338};
  10.         printf("liczba jest w A[%d] = %d", szuk_rek(A, 12, 0, 6), A[szuk_rek(A, 11, 0, 9)]);
  11.  
  12.  
  13.  
  14.         return 0;
  15. }
  16.  
  17. int szuk_rek(int *A, int X, int L, int R){
  18.         printf("L =%d R = %d\n", L, R);
  19.         if(A[L] > X || A[R] < X){
  20.                 return 0;
  21.         }
  22.         if(A[R]==X){
  23.                 return R;
  24.         }
  25.         if(L > R){
  26.                 return -1;
  27.         }
  28.         if( L >= (R-1) && A[L] != X){
  29.                 printf("jestem tu, powinno wywalic blad\n");
  30.                 return -1;
  31.         }
  32.  
  33.         if (A[(L+R)/2]== X){
  34.                 return (L+R)/2;
  35.         }
  36.  
  37.         if( A[(L+R)/2] < X){
  38.                 return szuk_rek(A, X, (L + R)/2, R);
  39.         }
  40.         if( A[(L+R)/2] > X){
  41.                 return szuk_rek(A, X, L, (L + R)/2);
  42.         }
  43.  
  44. }
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/ua2AkV
language:
C++ (gcc 8.3)
created:
12 years ago
visibility:
public

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