Created
February 10, 2013 21:04
-
-
Save linstantnoodles/4751047 to your computer and use it in GitHub Desktop.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| public static int findElement(int[] a, int l, int r, int x){ | |
| int m = (l+r)/2; | |
| int t = -1; | |
| if(x == a[m]) return m; | |
| if(l < r){ | |
| if(a[l] == a[m]){ | |
| if(x == a[l]) | |
| t = l; | |
| else | |
| t = findElement(a, m + 1, r, x); | |
| }else if(a[l] < a[m]){ | |
| if(x == a[l]) | |
| t = l; | |
| else if(x < a[m] && x > a[l]) | |
| t = findElement(a, l + 1, m - 1 , x); | |
| else | |
| t = findElement(a, m + 1, r, x); | |
| }else{ | |
| if(x == a[r]) | |
| t = r; | |
| else if(x > a[m] && x < a[r]) | |
| t = findElement(a, m + 1, r - 1, x); | |
| else | |
| t = findElement(a, l, m - 1, x); | |
| } | |
| } | |
| return t; | |
| } |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment