2D Array Chessboard Pattern
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//Constant prefix notation solver using bruh//Could make it infix or postfix later#include<string>#include<vector>#include<iostream>std::vector<long double> bruhBuff;long double operator ""bruh(long double a){bruhBuff.push_back(a);return a;}long double operator ""bruh(const char op){if(bruhBuff.size() < 2) throw "Bruh weak";long double b = bruhBuff.back();bruhBuff.pop_back();long double a = bruhBuff.back();bruhBuff.pop_back();switch(op){case (int)('+'):return a + b;case (int)('-'):return a - b;case (int)('*'):return a * b;case (int)('/'):return a / b;}return 69l;}int main(){1.0bruh;2.0bruh;std::cout << '+'bruh << std::endl;return 0;}
#include <bits/stdc++.h>#define MAXSIZE 50000#define INF 100000using namespace std;vector<int> adj[MAXSIZE]; //Adjacency Listbool visited[MAXSIZE]; //Checks if a node is visited or not in BFS and DFSbool isConnected = true; //Checks if the input graph is connected or notint dist[MAXSIZE], discover[MAXSIZE], finish[MAXSIZE]; //Distance for BFS, in time and out time for DFSint t = 1; //Time used for DFSint u, v, i, j, k, N = 0;stack<int> st; //Stack for TopSortmultiset<pair<int, int>> s; //collection of pairs to sort by distancepair<int, int> current; //pointer variable to a position in the multisetvoid BFS(){queue<int> q; //queue for BFSq.push(1); //pushing the sourcedist[1] = 0; //assign the distance of source as 0visited[1] = 1; //marking as visitedwhile(!q.empty()){u = q.front();q.pop();for(i=0; i < adj[u].size(); i++){v = adj[u][i]; //Adjacent vertexif(!visited[v]) //if not visited, update the distance and push onto queue{visited[v] = 1;dist[v] = dist[u]+1;q.push(v);}}}for(i = 1; i <= N; i++){s.insert(make_pair(dist[i], i)); //for sorted distance}cout << "BFS results:" << endl;//prints BFS results and checks if the graph is connectedwhile(!s.empty()){current = *s.begin();s.erase(s.begin());i = current.second;j = current.first;if(j == INF) //if any infinite value, graph is not connected{cout << i << " INF" << endl;isConnected = false;}else{cout << i << " " << j << endl;}}//marks blocks of memory as visitedmemset(visited, 0, sizeof visited);}void dfsSearch(int s){visited[s] = 1; //marking it visiteddiscover[s] = t++; //assigning and incrementing timeint i, v;for(i = 0; i < adj[s].size(); i++){v = adj[s][i];if(!visited[v]) //if vertex is not visited then visit, else continue{dfsSearch(v);}}st.push(s); //pushed onto stack for TopSort if it was calledfinish[s] = t++; //out time}void DFS(){for(i = 1; i <= N; i++){if(visited[i]) //if visited continue, else visit it with DFS{continue;}dfsSearch(i); //embedded function to actually perform DFS}for(i=1;i<=N;i++){s.insert(make_pair(discover[i], i)); //minheap for sorted discovery time}cout << "DFS results:" << endl;while(!s.empty()) //Prints DFS results as long as the multiset is not empty{current = *s.begin(); //duplicates the pointer to first object in the multisets.erase(s.begin()); //erases the first object in multiseti = current.second;cout << i << " " << discover[i] << " " << finish[i] << endl; //prints discover times and finish times}}void TopSort(){//call DFS so we can have a sorted stack to printfor(i=1;i<=N;i++){if(visited[i]){continue;}dfsSearch(i);}cout<<"Topological Sort results:"<<endl;//print sorted results from DFSwhile(!st.empty()){i = st.top();st.pop();cout << i << endl;}//declare blocks of memory as visitedmemset(visited, 0, sizeof visited);}int main(){string str, num, input;int selection, connectedChoice = 0;//get to input any file, more freedom than declaring file in command linecout << "Enter the exact name of your input file [case sensitive]: ";cin >> input;ifstream inputFile(input); //Read the input file//checks if the ifstream cannot openif(inputFile.fail()){cout << endl << "No input files matching that name. Terminating..." << endl;return 0;}//Read until the end of filewhile(!inputFile.eof()){getline(inputFile, str); //read the current lineif(str == ""){continue;}if(!isdigit(str[0])) //checks to see if the first item in a line is a digit or not{cout << "Invalid file format. You have a line beginning with a non-digit. Terminating..." << endl;return 0;}stringstream ss;ss << str; //convert the line to stream of stringsss >> num; //read the line numstringstream(num) >> u;while(!ss.eof()){ss>>num;if(stringstream(num) >> v){adj[u].push_back(v); //read the adjacent vertices}}N++; //calculate the number of verticessort(adj[u].begin(), adj[u].end()); //sort the adjacency list in case it is not sorted}//creates arbitrary values for distance, will check later if INF remainfor(i = 1; i <= N; i++){dist[i] = INF;}cout << endl << "Valid Input file loaded!" << endl;while(selection != 4){cout << "************************************************" << endl;cout << "What type of analysis would you like to perform?" << endl;cout << "1: Breadth-First Search" << endl;cout << "2: Depth-First Search" << endl;cout << "3: Topological Sort" << endl;cout << "4: Quit" << endl;cout << "************************************************" << endl;//read user input and execute selectioncin >> selection;switch(selection){case 1:cout << endl;BFS();cout << endl;cout << "Would you like to know if the graph is connected?" << endl;cout << "1: Yes" << endl;cout << "Any other key: No" << endl;cin >> connectedChoice;switch(connectedChoice){case 1:if(!isConnected){cout << "The graph is not connected." << endl << endl;}else{cout << "The graph is connected!" << endl << endl;}break;default:break;}break;case 2:cout << endl;DFS();cout << endl;break;case 3:cout << endl;TopSort();cout << endl;break;case 4:return 0;default:cout << endl << "Invalid selection." << endl; //loops the selection prompt until a valid selection is input.}}}
#include <iostream>using namespace std;int main() {const int ROW_SIZE = 2;const int COLUMN_SIZE = 5; //establish all variablesint matrix[ROW_SIZE][COLUMN_SIZE];int minVal;for (int i = 0; i < ROW_SIZE; ++i) // for loop to ask user to enter data.{for (int h = 0; h < COLUMN_SIZE; ++h) {cout << "Enter data for row #" << i + 1 << " and column #" << h + 1 << ": ";cin >> matrix[i][h];}}cout << "You entered: " << endl;for (int i = 0; i < ROW_SIZE; ++i) //for statements to output the array neatly{for (int h = 0; h < COLUMN_SIZE; ++h) {cout << matrix[i][h] << "\t";}cout << endl;}cout << "Minimum for each row is: {";for (int i = 0; i < ROW_SIZE; i++) //for statements to find the minimum in each row{minVal = matrix[i][0];for (int h = 0; h < COLUMN_SIZE; h++) {if (matrix[i][h] < minVal) // if matrix[i][h] < minVal -> minVal = matrix[i][h];{minVal = matrix[i][h];}}cout << minVal << ", ";}cout << "}" << endl;cout << "Minimum for each column is: {";for (int i = 0; i < COLUMN_SIZE; i++) //for statements to find the minimum in each column{minVal = matrix[0][i];for (int h = 0; h < ROW_SIZE; h++) {if (matrix[h][i] < minVal) //replaces minVal with array index for that column that is lowest{minVal = matrix[h][i];}}cout << minVal << ", ";}cout << "}" << endl;return 0;}
#include <iostream>using namespace std;int main() {cout << "Hello World!\n";// Prints out "Hello World"return 0;}
/*Algorithm:Step 1: Get radius of the cylinder from the user and store in variable rStep 2: Get height of the cylinder from the user and store in variable hStep 3: Multiply radius * radius * height * pi and store in vStep 4: Display the volume*/#include <iostream>using namespace std;int main(){float r; //define variable for radiusfloat h; //define variable for heightfloat v;float pi;pi=3.1416;cout<<"Enter radius:";cin>>r;cout<<"Enter height:";cin>>h;v=r*r*h*pi; //compute volumecout<<"Radius:"<<r<<"\tHeight:"<<h<<endl; //display radius and heightcout<<"\n************************\n";cout<<"Volume:"<<v<<endl;//display volumereturn 0;}
//Get data file at https://codecatch.net/post.php?postID=91e87d73//Iteration 1 of Wing Project. Solution breaks down around n=35#include <iostream>#include <fstream>#include <string>#include <vector>#include <map>using namespace std;int getSum(map<int, int> list);void readData(map<int, float>* data);void lowestPrice();void findSums(int n, vector<map<int, int>>* sumsList, map<int, float>* data);//void findSum(map<int, int> currList, int x, int n, vector<map<int, int>>* sumsList);void findSum(map<int, int> currList, int x, int n, vector<map<int, int>>* sumsList, map<int, float>* data);float getPrice(map<int, int> set, map<int, float>* data);template <typename S>ostream& operator<<(ostream& os, const vector<S>& vector){// Printing all the elements using <<for (auto element : vector) {os << element << " ";}return os;}bool operator==(map<int, int> m1, map<int, int> m2){if(m1.size() != m2.size())return false;bool ret = true;for(auto it = m1.begin(); it !=m1.end() && ret; it++){if(ret && m1.count(it->first) != m2.count(it->first))ret = false;if(ret && m1.count(it->first) == 1){if(m1.at(it->first) != m2.at(it->first))ret = false;}}return ret;}int main(){map<int, float> data;readData(&data);vector<map<int, int>> *sumsList;sumsList = new vector<map<int, int>>;findSums(40, sumsList, &data);for(auto el : *sumsList){for(auto it = el.begin(); it != el.end(); it++){cout << it->first << "->" << it->second << " ";}cout << getPrice(el, &data) << endl;}return 0;}/* Returns the price of wings given a set of numbers of wings to buy.* Returns -1 if the set contains a number that is not possible to buy.*/float getPrice(map<int, int> set, map<int, float>* data){float price = 0;for(auto it = set.begin(); it != set.end(); it++){//If data doesn't contain an element of set, return -1if(data->count(it->first) == 0)return -1;price += data->at(it->first) * it->second; //pricePerPacket * qtyOfPackets}return price;}/* Adds the elements of list.* Suppose mapping is <num, qty>.* Returns sum(num*qty)*/int getSum(map<int, int> list){int sum = 0;for(auto it = list.begin(); it != list.end(); it++)sum += it->first * it->second;return sum;}void findSums(int n, vector<map<int, int>>* sumsList, map<int, float>* data){map<int, int> currList;//Recur when currSum < nauto it = data->begin();while(it->first <= n && it != data->end()){findSum(currList, it->first, n, sumsList, data);it++;}}void findSum(map<int, int> currList, int x, int n, vector<map<int, int>>* sumsList, map<int, float>* data){//Append x to currListif(currList.count(x) == 0)currList.emplace(x, 1);else{int val = 1+ currList.at(x);currList.erase(x);currList.emplace(x, val);}//Determine current sum, check for return casesint currSum = getSum(currList);if(currSum > n)return;else if(currSum == n){//Check to make sure no duplicatesfor(auto list : *sumsList){if(list == currList)return;}sumsList->push_back(currList);return;}//Recur when currSum < nauto it = data->begin();while(it->first <= n-x && it != data->end()){findSum(currList, it->first, n, sumsList, data);it++;}}void readData(map<int, float>* data){ifstream file ("./data", ifstream::in);if(file.is_open()){int i = 0;while(!file.eof()){float wings, price;string skipnl;file >> wings;file >> price;data->emplace(wings, price);getline(file, skipnl);i++;}}}