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Update main.cpp #10

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abf47ed
Update main.cpp
kindofman Nov 19, 2019
3c2613a
Update main.cpp
kindofman Nov 23, 2019
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19 changes: 15 additions & 4 deletions 6-1/main.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -11,6 +11,7 @@
*/



#include <cassert>
#include <iostream>
#include <string>
Expand All @@ -22,6 +23,10 @@

using namespace std;

struct Print {
void operator() (int key) { cout << key << ' '; }
};

struct Node {
Node(const Node&) = delete;
Node(const Node&&) = delete;
Expand All @@ -35,7 +40,7 @@ struct Node {

Node(int key_) : key(key_) {}
void add(int new_key);
void pre_order();
void pre_order(Print print);

};

Expand All @@ -55,12 +60,13 @@ void Node::add(int new_key) {
new_key < current->key ? current->left = new Node(new_key) : current->right = new Node(new_key);
}

void Node::pre_order() {
void Node::pre_order(Print print) {
vector<Node *> stack;
Node* current = this;
while (current || !stack.empty()) {
if (current) {
cout << current->key << ' ';
print(current->key);
// cout << current->key << ' ';
stack.push_back(current);
current = current->left;
}
Expand All @@ -84,6 +90,8 @@ Node::~Node() {
}
}



int main() {
int size, key;
cin >> size >> key;
Expand All @@ -92,7 +100,10 @@ int main() {
cin >> key;
root->add(key);
}
root->pre_order();
Print print;
root->pre_order(print);
cout << endl;
return 0;
}