/**
 * As a physician, you need to update a patient's diagnosis based on their response to treatment.
 * The function takes a diagnosis map and treatment details as arguments.
 * Complete the code to update the 'diagnosis' map by modifying the values based on the treatment response.
 *
 * @param diagnosis Map containing the patient's diagnosis and associated values.
 * @param treatment The patient's response to the treatment. Can be 'improving', 'stable', or 'worsening'.
 * @return Updated diagnosis map with modified values based on the treatment response.
 */
fun updateDiagnosis(diagnosis: MutableMap<String, String>, treatment: String): MutableMap<String, String>? {

    when (treatment) {
        "improving" -> {
            diagnosis["status"] = "better"
            diagnosis["treatment_effect"] = "positive"
        }
        "stable" -> {
            diagnosis["status"] = "unchanged"
            diagnosis["treatment_effect"] = "neutral"
        }
        "worsening" -> {
            diagnosis["status"] = "worse"
            diagnosis["treatment_effect"] = "negative"
        }
        else -> return null // Handle an unknown treatment response.
    }
    return diagnosis
}
/**
 * As a physician, you need to update a patient's diagnosis based on their response to treatment.
 * The function takes a diagnosis map and treatment details as arguments.
 * Complete the code to update the 'diagnosis' map by modifying the values based on the treatment response.
 *
 * @param diagnosis Map containing the patient's diagnosis and associated values.
 * @param treatment The patient's response to the treatment. Can be 'improving', 'stable', or 'worsening'.
 * @return Updated diagnosis map with modified values based on the treatment response.
 */
fun updateDiagnosis(diagnosis: MutableMap<String, String>, treatment: String): MutableMap<String, String>? {
/**
 * As a physician, you need to update a patient's diagnosis based on their response to treatment.
 * The function takes a diagnosis map and treatment details as arguments.
 * Complete the code to update the 'diagnosis' map by modifying the values based on the treatment response.
 *
 * @param diagnosis Map containing the patient's diagnosis and associated values.
 * @param treatment The patient's response to the treatment. Can be 'improving', 'stable', or 'worsening'.
 * @return Updated diagnosis map with modified values based on the treatment response.
 */
fun updateDiagnosis(diagnosis: MutableMap<String, String>, treatment: String): MutableMap<String, String>? {

    when (treatment) {
        "improving" -> {
            diagnosis["status"] = "better"
            diagnosis["treatment_effect"] = "positive"
        }
        "stable" -> {
            diagnosis["status"] = "unchanged"
            diagnosis["treatment_effect"] = "neutral"
        }
        "worsening" -> {
            diagnosis["status"] = "worse"
            diagnosis["treatment_effect"] = "negative"
        }
        else -> return null // Handle an unknown treatment response.
    }
    return diagnosis
}