1502. Can Make Arithmetic Progression From Sequence.cpp

#include<algorithm>
class Solution {
public:
    bool canMakeArithmeticProgression(vector<int>& arr) {
        sort(arr.begin(), arr.end());
        //bool ans = true;
        int d = arr[0] - arr[1];
        for(int i = 0; i < arr.size() - 1; i++){
            if((arr[i] - arr[i+1]) != d){
                return false;
            }
        }return true;
    }
};