let mut amp_vector = vec![amp_a,amp_b, amp_c, amp_d, amp_e];
    let mut max_val = 0;

    for curr_phase_setting in phase_settings.iter().permutations(5) {
        let mut i = 0;
        let mut last_e_signal = 0;

        for j in 0..5 {
            amp_vector[j].restart(program.clone());
            amp_vector[j].add_input(*curr_phase_setting[j]);
        }
        // for mut  amp in amp_vector { why dosent this work..?
        //    amp.restart(program.clone());
        // }
     ...