Algorithms-and-Data-Structures/20-Coding-Patterns-DesignGurus.org
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Improvement: use smart pointer for RAII i.e. Scope-Bound Memory Management

Browse Source
This commit is contained in:
Manish 2023-03-02 16:23:06 +11:00
parent 39bd375b16
commit 7551e97cd4
1 changed files with 11 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
3_squares_of_a_sorted_array.cpp
View File

@ -2,6 +2,7 @@
*/
#include <iostream>
#include <memory>
#include <vector>
template <typename T> inline T absolute(T num) {
@ -11,9 +12,9 @@ template <typename T> inline T absolute(T num) {
template <typename T> inline T square(T num) { return num * num; }
template <typename T>
std::vector<T> &solution(const std::vector<T> &sorted_input) {
std::vector<T> *result = new std::vector<T>(sorted_input.size());
std::vector<T> &sorted_output = *result;
std::unique_ptr<std::vector<T>> solution(const std::vector<T> &sorted_input) {
std::unique_ptr<std::vector<T>> sorted_output =
std::make_unique<std::vector<T>>(sorted_input.size());
unsigned long long p1 = 0, p2 = 1;
while (p2 < sorted_input.size()) {
if (absolute(sorted_input[p2]) <= absolute(sorted_input[p1]))
@ -27,21 +28,21 @@ std::vector<T> &solution(const std::vector<T> &sorted_input) {
unsigned long long output_p = 0;
while (p1 < p2 && p2 < sorted_input.size()) {
if (absolute(sorted_input[p1]) < absolute(sorted_input[p2]))
sorted_output[output_p++] = (square(sorted_input[p1--]));
(*sorted_output)[output_p++] = (square(sorted_input[p1--]));
else
sorted_output[output_p++] = square(sorted_input[p2++]);
(*sorted_output)[output_p++] = square(sorted_input[p2++]);
}
while (p1 < p2)
sorted_output[output_p++] = square(sorted_input[p1--]);
(*sorted_output)[output_p++] = square(sorted_input[p1--]);
while (p2 < sorted_input.size())
sorted_output[output_p++] = square(sorted_input[p2++]);
(*sorted_output)[output_p++] = square(sorted_input[p2++]);
return sorted_output;
}
int main() {
std::vector<int> &result = solution(std::vector{-4, -1, 0, 3, 10});
for (const int num : result)
std::unique_ptr<std::vector<int>> result =
solution(std::vector{-4, -1, 0, 3, 10});
for (const int num : *result)
std::cout << num << ", ";
std::cout << std::endl;
delete &result;
}