c++ code with simple concepts

" bool checkZero(int num1 , int num2){ if(num1 - num2 == 1){ return true; } return false; } // Complete the minimumSwaps function below. int minimumSwaps(vector arr) { int size = arr.size();

int temp =0 , swap = 0;
for(int i = 0; i < size ; i++){
    if(!checkZero(arr[i], i)){
        for(int j = i+1; j < size ;j++){

            if(checkZero(arr[j], i)){
                temp = arr[j];
                arr[j] = arr[i];
                arr[i] = temp;
                swap++;
                break;
            }
        }
    }
}
return swap;

} "