feat(c++): pascals' triangle in c++ and babylonian sqrt
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21
languages/c++/babylonian.cc
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21
languages/c++/babylonian.cc
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#include <iostream>
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using namespace std;
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int sqrt(int number) {
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int initialGuess = 2;
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while (abs(initialGuess - number / initialGuess) > 1) {
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initialGuess = (initialGuess + number / initialGuess) / 2;
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}
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return initialGuess;
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}
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int main() {
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cout << "Type a number to predict the square root of:";
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int number;
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cin >> number;
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cout << sqrt(number);
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}
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65
languages/c++/pascal.cc
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languages/c++/pascal.cc
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#include <iostream>
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#include <vector>
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using namespace std;
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// Calculate Pascal's triangle
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vector<vector<int>> pascal(int rowCount) {
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vector<vector<int>> rows{{1}};
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for (int i = 0; i < rowCount; i++) {
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vector<int> previousRow = rows[rows.size() - 1];
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vector<int> newRow{1};
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for (int j = 0; j < previousRow.size() - 1; j++) {
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newRow.push_back(previousRow[j] + previousRow[j + 1]);
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}
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newRow.push_back(1);
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rows.push_back(newRow);
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}
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return rows;
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}
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int vectorStringLength(vector<int> vector) {
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int value = vector.size();
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for (int i = 0; i < vector.size(); i++) {
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value += to_string(vector[i]).size();
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}
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return value;
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}
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int main() {
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vector<vector<int>> pascalsTriangle = pascal(10);
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int bottomRowSize = vectorStringLength(pascalsTriangle[pascalsTriangle.size() - 1]);
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// Output the triangle
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for (int i = 0; i < pascalsTriangle.size(); i++) {
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vector<int> currentRow = pascalsTriangle[i];
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int rowSize = vectorStringLength(currentRow);
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int sizeDifference = bottomRowSize - rowSize;
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string spacing = "";
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for (int j = 0; j < sizeDifference / 2; j++) {
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spacing += " ";
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}
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for (int j = 0; j < currentRow.size(); j++) {
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if (j == 0) {
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cout << spacing;
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}
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cout << to_string(currentRow[j]) + " ";
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if (j == currentRow.size() - 1) {
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cout << spacing;
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}
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}
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if (i != pascalsTriangle.size() - 1) {
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cout << endl;
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}
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}
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}
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