Merge pull request #68 from AnupKumarPanwar/master

Merged 2 search algorithm folders
This commit is contained in:
Anup Kumar Panwar 2017-10-03 17:03:20 +05:30 committed by GitHub
commit 3cb33267bb
2 changed files with 0 additions and 79 deletions

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#include <stdio.h>
// Recursive Function- It returns location of x assumiung array arr[l..r] is present, otherwise -1
int binarysearch(int arr[], int l, int r, int x)
{
if (r >= l)
{
int mid = l + (r - l)/2;
// If element is present at middle
if (arr[mid] == x) return mid;
// If element is smaller than middle
if (arr[mid] > x) return binarysearch(arr, l, mid-1, x);
// Else element is in right subarray
return binarysearch(arr, mid+1, r, x);
}
// When element is not present in array
return -1;
}
int main(void)
{
// give function an array to work with
int arr[] = {2, 3, 4, 10, 40};
// get size of array
int n = sizeof(arr)/ sizeof(arr[0]);
//set value to look for
int x = 10;
// set result to what is returned from binarysearch
int result = binarysearch(arr, 0, n-1, x);
// print out result
(result == -1)? printf("Element is not in the array")
: printf("Element is present at index %d", result);
return 0;
}

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#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
bool check_sorted(int *a, int n)
{
while ( --n >= 1 ) {
if ( a[n] < a[n-1] ) return false;
}
return true;
}
void shuffle(int *a, int n)
{
int i, t, r;
for(i=0; i < n; i++) {
t = a[i];
r = rand() % n;
a[i] = a[r];
a[r] = t;
}
}
void sort(int *a, int n)
{
while ( !check_sorted(a, n) ) shuffle(a, n);
}
int main()
{
int numbers[6];
int i;
printf("Enter 6 numbers unsorted \n\n");
for(i=0;i<6;i++){
scanf("%d",&numbers[i]);
}
sort(numbers, 6);
for (i=0; i < 6; i++) printf("%d ", numbers[i]);
printf("\n");
}