public Integer[] selectSort(Integer[] array) {
        int N = 0;
        int M = array.length;
        int min = 0;
        Integer[] arrap = new Integer[array.length];
        for (int i = 0; i < array.length; i++) {
            arrap[i] = array[i];
        }
        return selectAux(arrap, N, min, M);
    }

    private Integer[] selectAux(Integer[] array, int N, int min, int M) {
        if (N == M) {
            return array;
        }
        int pos = 0;
        min = array[N];
        array[N] = minimoSelectAux(array, min, N, pos);
        return selectAux(array, N + 1, min, M);
    }

    private int minimoSelectAux(Integer[] array, int min, int variable, int pos) {
        if (array[variable] < min) {
            pos = variable;
            int aux = min;
            min = array[variable];
            array[variable] = aux;
        }
        if (variable == (array.length - 1)) {

            return min;
        } else {
            return minimoSelectAux(array, min, variable + 1, pos);
        }
    }