C++ Sorting Class Array
c++
Solution
The easiest way is to use the standard library:
#include <algorithm>
std::sort(cone, cone + 10,
[](ClassOne const & a, ClassOne const & b) -> bool
{ return a.value < b.value; } );
If you're willing to define a comparison operator globally, you don't even need the lambda:
bool operator<(ClassOne const & a, ClassOne const & b)
{
return a.value < b.value;
}
std::sort(cone, cone + 10);
Or you could make the comparator a member function. Or you could give the comparator function a custom name and pass that as the third argument of `sort`. This might be a good idea in the case where the comparison is specific to your situation and not "natural":
bool ValueCmp(ClassOne const & a, ClassOne const & b)
{
return a.value < b.value;
}
std::sort(cone, cone + 10, ValueCmp);
The last version is useful if you don't have C++11 support (for lambdas, as in the first case), or if you want to reuse the comparator in multiple different situations.
Problem
C++ Sorting Array Class I have an array object that record the following.. This is at classone.h ``` ClassOne { string name; int data; float valueData; } ``` and the constructor are created at classone.cpp At main.cpp I created ClassOne Array of Size 10 ``` #include "classone.h" ClassOne cone[10]; ``` Next is i recorded several value to the object and now ClassOne got 3 objects ``` cone[0] name = "hello" data = 1 valueData = 20 cone[1] name = "panda" data = 2 valueData = 15 cone[2] name = "joe" data = 3 valueData = 25 ``` What i want to achieve is do a sort that can rearrange this array by valueData highest ascending form so.. it will be `cone[2]` then `cone[0]` then `cone[1]` .. but the issue if i use bubble sort , i tried google and find some, they are sorting by e.g `int a[]={9,6,5,23,2,6,2,7,1,8};` but i wanna sort by class array object. and re-arrange the value together , how do i achieve this. So when i cout it will be ``` -- Highest to lowest -- 1) Name: Joe , Data = 3, Value =25 2) Name: Hello , Data =1 , Value = 20 3) Name: Panda, Data = 2, Value = 15 ``` Thanks for all help and guide!!