CSCI-UA.2 - Introduction to Programming (Python) - Department of Computer Science, New York University
Review Problems - prepartion for the first midterm exam
1. Write a program that will generate 1000 numbers randomly.
2. Write a program that will ask the user to enter a four digit number. You program should print the sum of the digits:
Sample run:
Enter a four digit number: 4231
Output:
The sum of the digits is 10.
3. Evaluate the following expressions. Provide the result (one value) and also indicate the data type of the result.
| EXPRESSION | Result | Data type | |
| 2 // 7 | _____________ | _____________ | |
| 3 / 2 | _____________ | _____________ | |
| 10 % 3 | _____________ | _____________ | |
| 1 * 3 - 3 % 4 // 3 + (5 % 3) | _____________ | _____________ | |
| ((2 == 3) and (3 < 4)) or (39 >= 2) | _____________ | _____________ | |
| not(2 == 2) | _____________ | _____________ | |
| random.randint(30,300) | _____________ | _____________ | |
| random.random() | _____________ | _____________ | |
| x = 10 | _____________ | _____________ | |
| x /= 2 | _____________ | _____________ |
4. Which of the following causes a number to be placed in variable
x? (circle the correct answer(s))
a) x = "20"
b) x = int(input("Enter your number"))
c) x = str(300)
d) x = input("Type your number")
e) x = float("123")
5. How many times would each while loop be executed?