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Update exponential_search.cpp

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Divide-et-impera-11 2019-11-30 21:01:52 +01:00 committed by GitHub
parent 51c26b85fe
commit 36a3999f3e
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1 changed files with 21 additions and 23 deletions
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Search/exponential_search.cpp
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@ -3,32 +3,30 @@
#include <string>
#include <assert.h>
using namespaces std;
template<class Type> inline Type* binary_search(Type *array, size_t size, Type key){
int32_t lower_index(0), upper_index(size - 1),middle_index;
while (lower_index <= upper_index)
{
template<class Type> inline Type* binary_s(Type *array, size_t size, Type key) {
int32_t lower_index(0), upper_index(size - 1), middle_index;
while (lower_index <= upper_index) {
middle_index = floor((lower_index + upper_index) / 2);
if (*(array + middle_index) < key) lower_index = (middle_index + 1);
else if (*(array + middle_index) > key) upper_index = (middle_index - 1);
else if (*(array + middle_index) > key)upper_index = (middle_index - 1);
else return (array + middle_index);
}
return nullptr;
}
template<class Type> Type* Struzik_Search(Type* array,size_t size,Type key) {
uint32_t block_front(0),block_size = size == 0 ? 0 : 1;
while (block_front != block_size)
{
template<class Type> Type* Struzik_Search(Type* array, size_t size, Type key) {
uint32_t block_front(0), block_size = size == 0 ? 0 : 1;
while (block_front != block_size) {
if (*(array + block_size - 1) < key) {
block_front = block_size;
(block_size * 2 - 1 < size) ? (block_size *= 2) : block_size = size;
continue;
}
return binary_search<Type>(array + block_front, (block_size - block_front), key);
return binary_s<Type>(array + block_front, (block_size - block_front), key);
}
return nullptr;
}
int main(){
int *sorted_array = new int[7]{ 7,10,15,23,70,105,203 };
int main() {
int *sorted_array = new int[7]{7, 10, 15, 23, 70, 105, 203};
assert(Struzik_Search<int>(sorted_array, 7, 0) == nullptr);
assert(Struzik_Search<int>(sorted_array, 7, 1000) == nullptr);
assert(Struzik_Search<int>(sorted_array, 7, 50) == nullptr);