Add heap tester.
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84
main.cpp
84
main.cpp
@ -1,11 +1,9 @@
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#include <iostream>
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#include <vector>
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#include <algorithm>
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#include <iomanip>
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using string = std::string;
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//Placw in header!
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//Place in header!
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template <typename T>
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void printm(T m){
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std::cout << m;
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@ -17,37 +15,71 @@ void printlm(T m){
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printm("\n");
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}
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double promptd(string,bool*);
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class Heap {
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int pos {0};
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int length {0};
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int size;
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int* storage;
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public:
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Heap(int sz) {
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size = sz;
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storage = new int[sz];
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}
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~Heap() {
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delete[] storage;
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}
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bool isEmpty() {
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return length == 0;
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}
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void add(int item) {
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if (length + 1 > size) return;
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pos = length;
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while (pos > 0 && storage[(pos-1)/2] < item) {
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storage[pos] = storage[(pos-1)/2];
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pos = (pos-1)/2;
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}
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storage[pos] = item;
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++length;
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}
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int extractMax() {
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int max {storage[0]};
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storage[0] = storage[--length];
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int first {0};
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while ((2*first)+1 <= length - 1) {
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int largest {(2*first)+1};
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if ((2*first)+2 <= length - 1 && storage[largest] < storage[(2*first)+2]) largest = (2*first)+2;
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if (storage[first] >= storage[largest]) break;
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int swap = storage[first];
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storage[first] = storage[largest];
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storage[largest] = swap;
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first = largest;
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}
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return max;
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}
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};
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int prompti(string,bool*);
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int main() {
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std::setprecision(3);
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printlm("Calculate median and average from sequence:");
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std::vector<double> v{};
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printlm("Create Heap:");
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Heap h{16};
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bool s {};
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int i {0};
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do {
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auto d = promptd("Enter a number (Enter non-number to complete entry) : ",&s);
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if (s) v.push_back(d);
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auto d = prompti("Enter a number: ",&s);
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if (s) {
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h.add(d);
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++i;
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}
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}
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while(s);
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sort(v.begin(), v.end());
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printm("The count is: ");
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printlm(v.size());
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printm("The median is: ");
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int halfway {static_cast<int>(v.size()) / 2};
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if (static_cast<int>(v.size())%2 == 1)
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printlm(v.at(halfway));
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else
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printlm((v.at(halfway - 1) + v.at(halfway)) / 2.0);
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double avg {};
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for (int i = 0; i < static_cast<int>(v.size()); ++i) avg += v.at(i);
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avg /= static_cast<int>(v.size());
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printm("The average is: ");
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printlm(avg);
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while(s && i < 16);
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printlm("Output Heap:");
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while (!h.isEmpty()) printlm(h.extractMax());
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return 0;
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}
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double promptd(string message, bool *status) {
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double tr {};
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int prompti(string message, bool *status) {
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int tr {};
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*status = false;
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std::cout << message;
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if (!(std::cin >> tr)){
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