1. moveMeaning: The essence of move is to convert a left value into a right value reference, thereby triggering move semantics (the move operation is implemented by the type’s move constructor/assignment operator, and resource ownership is transferred).Usage: Clearly identify scenarios where ownership needs to be transferred; efficient insertion in container operations (using move when inserting … Read more
1. Three Numbers in an Array that Sum to a Target Value Problem Description: Given an integer array and a target value, find all unique triplets in the array that sum up to the target value.Input and Output: Input the array and target value, output all triplets that meet the condition.Code Implementation: #include<iostream> #include<vector> #include<algorithm> … Read more
Today is the 729th day of learning programming with a slightly cold rain! Hello, everyone! This is the GESP Level 4 Examination question. Day 729 GESP Level 4 Examination in March 2025 True or False Question 8: The time complexity of insertion sort in the best case (already sorted) is O(n^2). Answer: False START OF … Read more
Learn programming with Lao Ma while “leveling up and fighting monsters”! This aims to provide comprehensive learning materials for children to prepare for the level examination together. Add the assistant on WeChat and reply with 【GESP Level 2 2024.09_Sum of Digits】 to obtain the source code for this problem. GESP Level 2 2024.09_Sum of Digits … Read more
1 Type Erasure1.1 OverviewC++ is a strongly typed language, but when it comes to abstract design, the hard coding caused by strong typing can become a hassle. This is where we need the help of type erasure technology. Type erasure is a programming technique that allows you to operate on various concrete types through generic … Read more
Indicators: A Powerful C++ Library for Adding Cool Progress Bars and Indicators to Your Programs indicators is a library designed for modern C++ that displays various progress bars and indicators in the terminal. It is ideal for tasks that require visual feedback, such as file downloads and task progress displays. Next, let’s take a look … Read more
Problem Description Given a positive integer n, process each digit from low to high (if the input number has less than3 digits, pad with leading zeros to3 digits, for example, the input8 is treated as008, and the input26 is treated as026), generate the energy value according to the following rules: Even Position: If the current … Read more
Detailed Explanation of Core Points for C++ GESP Level 3 In the GESP Level 3 exam, C++ is the core language assessed, and mastering the key points is crucial for success. Today, we will systematically outline the important and frequently tested knowledge points in the GESP Level 3 exam, combined with real questions and practice … Read more
Problem Description In the era of interstellar exploration, humanity has launched the “Solar Walk” program! Astronauts, equipped with high-tech walking gear, take a stable step of 1 meter every second. The distance from Earth to the Sun is a constant 1.5×10^11 meters, and the length of each step is set by the equipment parameters as … Read more