A key difference between recursion and iteration is:

Which of the following algorithms is the best example of a “divide and conquer” strategy implemented with recursion?

The “unwinding” phase of a recursive call begins when:

A sound wave travels along a tube oriented in the direction of the -axis. The displacement is given by

What is the output of the following Java code? public static int mystery(int n) { if (n < 10) { return n; } else { return mystery(n / 10) + (n % 10); } } // Call: System.out.println(mystery(345));

Erin, for over two years has fluctuating mood disturbances that cause him some distress and has interfered in his relationship with his girlfriend and his friends. When he is “up,” he is very energetic and has a decreased need for sleep. During this period, he can accomplish much, feels very creative, and completes many tasks. These times usually last about two days. After this period of being “up,” he complains he has a “down” period. During the down times, he feels sluggish and has little energy. He states, “When I go through a downtime, I just feel heavy and blah. No, not depressed or hopeless, just really drained, more than anything.” He has never met the criteria for a Manic episode, Hypomanic episode, or Major Depressive episode. Erin is diagnosed with which of the following conditions?

The essential feature is marked, or intense fear or anxiety triggered by the real or anticipated exposure to a range of situations. The disorder is characterized by marked or intense fear or anxiety triggered by the real or anticipated exposure to a wide range of situations, such as using public transportation, being in large open spaces, standing in line or a crowd, or being alone while away from home. This defines what disorder?    

Jada worries about embarrassing or humiliating herself. One of her primary fears is that others will notice that she is anxious. She is afraid of situations that she believes will allow others to judge her and find her inadequate. Thus, Jada avoids situations in which she might be the center of attention. She has an intense fear of being in situations where she does not know people, so she often avoids activities she would really like to participate in. Her fear of standing out makes her hesitate to do things or speak to people out of fear of embarrassment. She avoids public speaking and engaging in presentations at conferences or events. She often avoids parties or gatherings of groups of acquaintances because she is afraid of introducing herself to others or of appearing awkward or clumsy. Jada is diagnosed with what disorder?  

The therapist had to come to Gene’s house for the initial sessions because the client is extremely afraid of being away from home. He states, “I am afraid that I can’t get back home if anything bad happens. When I get out in a crowd, I get really scared and fearful. There are big stores that really bother me, like those superstores. I have driven up in the parking lot of Belk’s in Columbus and just get so flustered that I drive home. Same way with the big box stores, even the number of cars in the parking lot will kick off my anxiety. I hate to be this way. I drive to West Point for church because Incarnation is so small. This disorder is inconvenient and disturbing!” Gene also has panic attacks and has been to the emergency room with ten times since December. His diagnosis is what?    

Ashley, 10, has several behaviors that have continued for over three years. Her teacher believes these behaviors distract her and her class. The child has been sent to the principal numerous times in the past year for her behaviors. The teacher indicates, “This is a very attention-seeking child. She is always trying to get my attention and the attention of the other children in class. She jerks around and twists her head, rolls her shoulders, and squirms in her seat. But she always makes funny sounds and grunts. She rolls her eyes and makes faces at me. At times, she jerks all over and peeps. She is a smart little girl, but she seems to be seeking my attention and everyone else’s.” Ashley is diagnosed with which of the following conditions?