From 97bf410b3605fc185ac609b549df2823a45f4049 Mon Sep 17 00:00:00 2001 From: github-actions <${GITHUB_ACTOR}@users.noreply.github.com> Date: Sat, 20 Jun 2020 18:34:51 +0000 Subject: [PATCH] formatting source-code for e464ddac3688834ce46c59bada5ad3fddbfa2254 --- sorting/heap_sort.cpp | 52 +++++++++++++++++++++---------------------- 1 file changed, 25 insertions(+), 27 deletions(-) diff --git a/sorting/heap_sort.cpp b/sorting/heap_sort.cpp index 405e4641d..ae50e1cfb 100644 --- a/sorting/heap_sort.cpp +++ b/sorting/heap_sort.cpp @@ -8,24 +8,24 @@ * \author [Ayaan Khan](http://github.com/ayaankhan98) * * \details - * heapsort is a comparison-based sorting algorithm. - * Heapsort can be thought of as an improved selection sort: - * like selection sort, heapsort divides its input into a sorted - * and an unsorted region, and it iteratively shrinks the unsorted - * region by extracting the largest element from it and inserting - * it into the sorted region. Unlike selection sort, - * heapsort does not waste time with a linear-time scan of the - * unsorted region; rather, heap sort maintains the unsorted region - * in a heap data structure to more quickly find the largest element + * heapsort is a comparison-based sorting algorithm. + * Heapsort can be thought of as an improved selection sort: + * like selection sort, heapsort divides its input into a sorted + * and an unsorted region, and it iteratively shrinks the unsorted + * region by extracting the largest element from it and inserting + * it into the sorted region. Unlike selection sort, + * heapsort does not waste time with a linear-time scan of the + * unsorted region; rather, heap sort maintains the unsorted region + * in a heap data structure to more quickly find the largest element * in each step. - * + * * Time Complexity - O(nlog(n)) * */ #include /** - * + * * Utility Lambda function to print the array after * sorting. * @@ -33,25 +33,24 @@ * @param sz size of array * */ -auto printArray = [] (int *arr, int sz) { - for (int i = 0 ; i < sz ; i++) - std::cout << arr[i] <<" "; +auto printArray = [](int *arr, int sz) { + for (int i = 0; i < sz; i++) std::cout << arr[i] << " "; std::cout << "\n"; }; /** * - * The heapify procedure can be thought of as building a heap from - * the bottom up by successively sifting downward to establish the - * heap property. - * + * The heapify procedure can be thought of as building a heap from + * the bottom up by successively sifting downward to establish the + * heap property. + * * @param arr array be to sorted - * @param + * @param */ -void(*heapify)(int *arr, int n, int i) = [] (int *arr, int n, int i) { +void (*heapify)(int *arr, int n, int i) = [](int *arr, int n, int i) { int largest = i; - int l = 2*i + 1; - int r = 2*i + 2; + int l = 2 * i + 1; + int r = 2 * i + 2; if (l < n && arr[l] > arr[largest]) largest = l; @@ -73,11 +72,10 @@ void(*heapify)(int *arr, int n, int i) = [] (int *arr, int n, int i) { * @param n size of array * */ -auto heapSort = [] (int *arr, int n) { - for (int i = n-1 ; i >= 0; i--) - heapify(arr, n, i); +auto heapSort = [](int *arr, int n) { + for (int i = n - 1; i >= 0; i--) heapify(arr, n, i); - for (int i = n-1 ; i >= 0; i--) { + for (int i = n - 1; i >= 0; i--) { std::swap(arr[0], arr[i]); heapify(arr, i, 0); } @@ -88,7 +86,7 @@ int main() { int arr[] = {-10, 78, -1, -6, 7, 4, 94, 5, 99, 0}; int sz = sizeof(arr) / sizeof(arr[0]); // sz - size of array printArray(arr, sz); // displaying the array before sorting - heapSort(arr, sz); // calling heapsort to sort the array + heapSort(arr, sz); // calling heapsort to sort the array printArray(arr, sz); // display array after sorting return 0; }