[C++ Solution] Roman to Integer and Integer to Roman & Structure SpringBoot
Roman to Integer 1. Code class Solution { public: int romanToInt(string s) { std::unordered_map<char, int> roman_to_int = { {'I', 1}, {'V', 5}, ...
When to Use Each Alorithm?
[C++ Solution] Roman Numeral Conversion and Skyscraper Puzzle
Roman to Integer 1. Code class Solution { public: int romanToInt(string s) { std::unordered_map<char, int> roman_to_int = { {'I', 1}, {'V', 5}, ...
[Google Singapore OA Questions] GCD and Trapped Rain Water in C++ and Python
Google Singapore OA Question (Summer 2020 Internship) Code : LeetCode #include <iostream> #include <vector> #include <sstream> #include <algorithm> #include <numeric>...
[LeetCode] Implementing a Singly Linked List in C
Data Structure Books : C언어로 설명하는 자료구조 프로그래밍 Single Linekd List 1. Code #include <stdio.h> #include <stdlib.h> // define the node structure struct node { int num; struct no...
[C Language] Goto, Preprocessor Directives, Structures, and Unions
C language 1. goto It is used to immediately jump to a specified label within the program. #include <stdio.h> int main() { int num = 0; printf("Enter a positi...
[LeetCode] Matrix Manipulation and Salary Calculations
Prepare to PCCP exam Code : LeetCode Matrix For example, the value at (2,3) in a matrix, we are looking for the value in the second row and third column. Geeksforgeeks → Expla...
[LeetCode] Recursion, Linked Lists, and Taylor Series in Python and C++
Prepare to PCCP exam Code : LeetCode 1. sorted(arr) VS arr.sort() If you need a sorted copy of the list while keeping the original list → sorted(arr) If you want to sort the or...
[Understanding APIs] Caching, Layered Architecture, and Authentication in Django
Coursera This is a API course is one part of the overall Meta Back-end Developer course 1. Caching Caching is a technique of serving saved results instead of creating a fresh one ever...
[Understanding APIs] Function-Based and Class-Based Views
Coursera This is a API course is one part of the overall Meta Back-end Developer course 1. Introduction Django is to server HTTP responses to HTTP requests Django allows us ...
Getting Started with Pipenv Managing Python Dependencies Efficiently
Coursera This is a API course is one part of the overall Meta Back-end Developer course Pipenv For the first time, I’m using pipenv as I’m accustomed to using virtualenv and pip ...