Algorithmen_Datenstrukturen/Uebung 1/Algorithms.h

111 lines
2.3 KiB
C++

#pragma once
#include "Sortiment.h"
#include "Ware.h"
#include <algorithm>
void bubbleSort(Ware *waren[10]) {
for (int n = 10; n > 1; n--) {
for (int i = 0; i < n - 1; i++) {
if (waren[i]->getGewicht() > waren[i + 1]->getGewicht()) {
std::swap(waren[i], waren[i + 1]);
}
}
}
}
void insertionSort(Ware *waren[10], int sortby) {
if (sortby == 0) {
for (int i = 1; i < 10; i++) {
int j = i;
while (j > 0 &&
waren[j - 1]->getVerkaufspreis() > waren[j]->getVerkaufspreis()) {
std::swap(waren[j - 1], waren[j]);
j--;
}
}
} else if (sortby == 1) {
for (int i = 1; i < 10; i++) {
int j = i;
while (j > 0 &&
waren[j - 1]->getEinkaufspreis() > waren[j]->getEinkaufspreis()) {
std::swap(waren[j - 1], waren[j]);
j--;
}
}
}
}
void quicksort(Ware *waren[], int l, int u) {
int i = l, j = u;
Ware *a;
int pivot = waren[(l + u) / 2]->getSeriennummer();
while (i <= j) {
while (waren[i]->getSeriennummer() < pivot) {
i++;
}
while (waren[j]->getSeriennummer() > pivot) {
j--;
}
if (i <= j) {
a = waren[i];
waren[i] = waren[j];
waren[j] = a;
i++;
j--;
}
};
if (l < j) {
quicksort(waren, l, j);
}
if (i < u) {
quicksort(waren, i, u);
}
}
void merge(Ware *array[], int left, int middle, int right) {
int n1 = middle - left + 1;
int n2 = right - middle;
Ware *leftArray[n1];
Ware *rightArray[n1];
for (int i = 0; i < n1; i++) {
leftArray[i] = array[left + i];
}
for (int j = 0; j < n2; j++) {
rightArray[j] = array[middle + j + 1];
}
int k = 0, l = 0, m = left;
while (k < n1 && l < n2) {
if (leftArray[k]->getBezeichnung() <= rightArray[l]->getBezeichnung()) {
array[m] = leftArray[k];
k++;
} else {
array[m] = rightArray[l];
l++;
}
m++;
}
while (k < n1) {
array[m] = leftArray[k];
k++;
m++;
}
while (l < n2) {
array[m] = rightArray[l];
l++;
m++;
}
}
void mergeSort(Ware *array[], int left, int right) {
if (left < right) {
int middle = left + (right - left) / 2;
mergeSort(array, left, middle);
mergeSort(array, middle + 1, right);
merge(array, left, middle, right);
}
}