Introduction to Programming

These are the slides from my Introduction to Programming course taught as part of Delta Sigma Pi's professional development program.

Transcript

1. Introduction.to(programming) by = "Dylan Staley"
2. What is programming?
3. C# Visual Basic C++ Objective-C
4. Data Types
5. 'H'
6. "Hello"
7. 0 1 2 3 4 H e l l o
9. 2.5
10. True
11. Type Conversion
12. "1234"
13. int("1234")
15. str(2252900386)
16. int("123a")
17. ValueError: invalid literal for int() with base 10: '123a'
18. Variables
19. name = "Dylan"
20. the_cake = False
21. here = there
22. Arrays
23. 0 1 2 3 4 H e l l o
24. nums = [1, 2, 3, 4, 5]
25. 0 1 2 3 4 1 2 3 4 5
26. nums[1]
27. nums[6]
28. IndexError: list index out of range
29. ["You", "Me", "Dupree"]
30. Operations
31. a = 1 b = 2 c = a + b
32. a = 10 b = 2 c = a / b
33. a = 10 b = 2 c = a % b
34. a = 1 b = "Hi" c = a + b
35. TypeError: unsupported operand type(s) for +: 'int' and 'str'
36. a = "Hello" b = "World" c = a + b
37. "HelloWorld"
38. a = 10 b = 10 c = a == b
39. a = 15 b = 10 c = a < b
40. Conditionals and Control Flow
41. True and False
42. True or False
43. not True
44. (True or False) and (not True)
45. b = 10 if b > 5: # do that else: # do this
46. b = 4 if b > 5: # do that else: # do this
47. b = 5 if b > 5: # do that else: # do this
48. if num % 5 == 0: # number is divisible by 5
49. if num % 5 == 0 and num % 3 == 0: # number is divisible by 3 and 5
50. if num % 5 == 0 and num % 3 == 0: # number is divisible by 3 and 5 elif num % 5 == 0: # number is divisible by 5 elif num % 3 == 0: # number is divisible by 3 else: # number is not divisible by 3 or 5
51. "Write a program that prints the numbers from 1 to 100. But for multiples of three print “Fizz” instead of the number and for the multiples of five print “Buzz”. For numbers which are multiples of both three and five print “FizzBuzz”."
52. "Most good programmers should be able to write out on paper a program which does this in a under a couple of minutes. ! Want to know something scary ? – the majority of comp sci graduates can’t. I’ve also seen self-proclaimed senior programmers take more than 10-15 minutes to write a solution."
53. Functions
54. def fizzbuzz(num): # do stuffs
55. func Fizzbuzz(num int) string { // do stuffs }
56. def fizzbuzz(num): if num % 5 == 0 and num % 3 == 0: return "FizzBuzz" elif num % 5 == 0: return "Buzz" elif num % 3 == 0: return "Fizz" else: return num
57. fizzbuzz(3)
58. fizzbuzz(30)
59. fizzbuzz(28)
60. Loops
61. nums = [1, 2, 3, 4, 5] for num in nums: print(num)
62. def sum(start, stop): result = 0 for num in range(start, stop + 1): result = result + num return result ! print(sum(1,5))
63. def fizzbuzz(number): if num % 5 == 0 and num % 3 == 0: return "FizzBuzz" elif num % 5 == 0: return "Buzz" elif num % 3 == 0: return "Fizz" else: return num
64. for num in range(0,101): print(fizzbuzz(num))
65. Practice
66. def digit_sum(number): sum = 0 for digit in str(number): sum = sum + int(digit) return sum ! print(digit_sum(1234))
67. def anti_vowel(s): result = "" for letter in s: if ( letter.lower() != 'a' and letter.lower() != 'e' and letter.lower() != 'i' and letter.lower() != 'o' and letter.lower() != 'u'): result = result + letter return result ! print(anti_vowel("Hey look it works!"))
68. def reverse(string): result = "" for char in string: result = char + result return result ! print(reverse("Hello"))
69. def factorial(number): result = 1 for num in range(2, number + 1): result = result * num return result ! print(factorial(5))