Example Analysis of object sorting in C++

This article mainly introduces the example analysis of object sorting in C++, which is very detailed and has a certain reference value. Interested friends must finish reading it!

1. Introduction to object comparison

The premise of exchange in sorting is mainly the comparison between objects,

The common sort is to sort an array, and then compare and exchange the contents of each array.

If you are sorting a class, you need to compare keyword members and override the following operators:

Bool operator = (const class& t); / / if ture is returned, it means equality

Bool operator! = (const class& t); / / and the equal operators return the opposite value

Bool operator (const class& t)

Bool operator = (const class& t)

For example, students' transcripts are sorted according to their math scores from high to low, and if students with the same math scores are ranked according to their English grades.

two。 Code implementation

The code is as follows:

# include using namespace std;class Student {int number; / / Student ID int mathScore; / / Mathematics int enScore; / / English score public: Student () {} Student (int number, int mathScore, int enScore) {this- > number = number; this- > mathScore = mathScore; this- > enScore = enScore;} void printString () {cout