RE: KNN using c++ for nRF51822, any suggestion for this output?

mantap — Sun, 15 Apr 2018 07:19:54 GMT

I have solve one of them.. using this function

#include <algorithm>  and std::sort that can active the sorting function..

here is the code..
#include "mbed.h"
#include "Serial.h"
#include <algorithm>  
Serial uart1(USBTX,USBRX);
using namespace std;
...

nt classifyAPoint(Point arr[], int n, int k, Point p)
{
    for (int i = 0; i < n; i++)
        arr[i].distance =
            sqrt ((arr[i].x - p.x) * (arr[i].x - p.x) + 
                  (arr[i].y - p.y) * (arr[i].y - p.y));
                  
    std::sort (arr, arr+n, comparison);
    ...
}