Merge remote-tracking branch 'upstream/master'

This commit is contained in:
Tran Hau 2017-10-13 21:34:28 +07:00
commit 3af6c03d06
2 changed files with 116 additions and 0 deletions

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int fibMonaccianSearch(int arr[], int x, int n)
{
/* Initialize fibonacci numbers */
int fibMMm2 = 0; // (m-2)'th Fibonacci No.
int fibMMm1 = 1; // (m-1)'th Fibonacci No.
int fibM = fibMMm2 + fibMMm1; // m'th Fibonacci
/* fibM is going to store the smallest Fibonacci
Number greater than or equal to n */
while (fibM < n)
{
fibMMm2 = fibMMm1;
fibMMm1 = fibM;
fibM = fibMMm2 + fibMMm1;
}
// Marks the eliminated range from front
int offset = -1;
/* while there are elements to be inspected. Note that
we compare arr[fibMm2] with x. When fibM becomes 1,
fibMm2 becomes 0 */
while (fibM > 1)
{
// Check if fibMm2 is a valid location
int i = min(offset+fibMMm2, n-1);
/* If x is greater than the value at index fibMm2,
cut the subarray array from offset to i */
if (arr[i] < x)
{
fibM = fibMMm1;
fibMMm1 = fibMMm2;
fibMMm2 = fibM - fibMMm1;
offset = i;
}
/* If x is greater than the value at index fibMm2,
cut the subarray after i+1 */
else if (arr[i] > x)
{
fibM = fibMMm2;
fibMMm1 = fibMMm1 - fibMMm2;
fibMMm2 = fibM - fibMMm1;
}
/* element found. return index */
else return i;
}
/* comparing the last element with x */
if(fibMMm1 && arr[offset+1]==x)return offset+1;
/*element not found. return -1 */
return -1;
}
int main(void)
{
int arr[] = {10, 22, 35, 40, 45, 50, 80, 82,
85, 90, 100};
int n = sizeof(arr)/sizeof(arr[0]);
int x = 85;
printf("Found at index: %d",
fibMonaccianSearch(arr, x, n));
return 0;
}

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Sorts/shellSort.c Normal file
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#include <stdio.h>
#include <stdlib.h>
#include <time.h>
void shellSort(int array[], int value){
int i = value;
int j, k, tmp;
for (i = value / 2; i > 0; i = i / 2){
for (j = i; j < value; j++){
for(k = j - i; k >= 0; k = k - i){
if (array[k+i] >= array[k]){
break;
}
else{
tmp = array[k];
array[k] = array[k+i];
array[k+i] = tmp;
}
}
}
}
}
int main(){
int array[20];
int range = 500;
for(int i = 0; i < 100; i++){
array[i] = rand() % range + 1;
}
int size = sizeof array / sizeof array[0];
clock_t start = clock();
shellSort(array,size);
clock_t end = clock();
double time_spent = (double)(end - start) / CLOCKS_PER_SEC;
printf("Data Sorted\n");
printf("%s\n", "Shell Sort Big O Notation:\n--> Best Case: O(n log(n))\n--> Average Case: depends on gap sequence\n--> Worst Case: O(n)\n");
printf("Time spent sorting: %f\n", time_spent);
return 0;
}