initial commit

Author: dlloyd09

ex00/hello.py

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+####################################
+# hello.py
+#
+# The simplest program there is!
+####################################
+
+print("Hello, world!")

ex01/string0.py

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+####################################
+# string0.py
+#
+# Introduce importing libraries (modules)
+# Introduce variable printing
+####################################
+
+import cs50
+
+name = cs50.get_string()
+print("Hello, {}!".format(name))

ex01/string1.py

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+####################################
+# string1.py
+#
+# Introduce specific function importing
+####################################
+
+from cs50 import get_string
+
+print("What is your name?" )
+name = get_string()
+print("Hello, {}!".format(name))

ex02/temperature.py

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+####################################
+# temperature.py
+#
+# Introduce mathematical operations
+# Introduce formatted printing
+####################################
+
+from cs50 import get_float
+
+print("What temperature is it in Fahrenheit?")
+fahrenheit = get_float()
+
+# formula for conversion is (f - 32) * (5/9)
+
+celsius = 5.0 / 9.0 * (fahrenheit - 32.0)
+
+# print my floating point number (f) to one decimal place (1)
+print("{:.1f}".format(celsius))

ex03/conditions.py

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+####################################
+# conditions.py
+#
+# Introduce decision making
+####################################
+
+import cs50
+
+print("Give me an integer, please!")
+i = cs50.get_int()
+
+# if the condition is true, execute the indented lines of code
+if i < 0:
+    print("negative")
+
+# "elif" is the way one says "else if"
+elif i > 0:
+    print("positive")
+    
+# else is the catch-all
+else:
+    print("zero")

ex04/logical.py

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+####################################
+# logical.py
+#
+# Introduce Boolean concepts (or, and)
+####################################
+
+import cs50
+
+print("Answer yes (y/Y) or no (n/N)")
+c = cs50.get_char()
+
+if c == "Y" or c == "y":
+    print("yes")
+elif c == "N" or c == "n":
+    print("no")
+else:
+    print("error")

ex05/quack.py

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+####################################
+# quack.py
+#
+# Introduce other libraries/modules
+# Introduce looping
+####################################
+
+import time
+
+while True:
+    print("Quack!")
+    time.sleep(1)

ex06/string2.py

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+####################################
+# string2.py
+#
+# Introduce a new kind of loop
+# Introduce the concept of "None"/null
+####################################
+
+import cs50
+
+print("Please provide some text!")
+s = cs50.get_string()
+
+if s != None:
+    for c in s:
+        print(c)

ex07/count.py

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+####################################
+# count.py
+#
+# Introduce range() for counting
+####################################
+
+import cs50
+
+print("Please give me an integer!")
+value = cs50.get_int()
+
+for i in range(value):
+    print(i + 1)

ex08/positive.py

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+####################################
+# positive.py
+#
+# Introduce the concept of functions
+# Introduce the concept of main
+# Bring it all together?
+####################################
+
+import cs50
+
+def get_positive_int():
+    # continue looping forever
+    while True:
+        
+        # prompt the user for input using CS50's get_int function
+        print("n is ", end="")
+        n = cs50.get_int()
+        
+        # if we get a positive integer, break out of the loop
+        if n > 0:
+            break
+    
+    # return  a value from this function back to the user    
+    return n
+
+def main():
+    
+    i = get_positive_int()
+    print("{} is a positive integer".format(i))
+
+
+
+if __name__ == "__main__":
+    main()

greedy/greedy.py

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+####################################
+# greedy.py
+#
+# Provide change to a user, using 
+# only coins of values: 25c, 10c, 5c, 1c
+####################################
+
+# import any necessary modules
+
+# ask the user for change in dollars and cents
+
+# convert from dollars and cents to cents only
+
+# give the user one coin at a time, taking the biggest piece possible
+
+# print out how many coins we gave

stairs/stairs.py

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+####################################
+# stairs.py
+#
+# Build a right-align set of stairs of 
+# the specified height and width
+# 
+# Example (height 3):
+#   x
+#  xx
+# xxx
+#
+# Example (height 5):
+#
+#     x
+#    xx
+#   xxx
+#  xxxx
+# xxxxx
+####################################
+
+# import any necessary modules
+
+# prompt the user for a height in [0, 23] (re-prompting if needed!)
+
+# print the stairs!
+
+## HINTS:
+## 1. You'll probably find it easiest to print a full square of x's first
+## 2. Try and print a left-aligned set of stairs next... you'll probably find it easier!
+## 3. Then think about what else you could print to make things right-aligned!
+## 4. We teach a similar problem to this in CS50 called "Mario". The below video teaches the concepts in a programming
+##    language called 'C', but the same basic ideas in that walkthrough are still relevant, just using Python instead!
+##    Walkthrough: https://www.youtube.com/watch?v=EGWRG5e1O2s

web/application.py

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+from flask import Flask, render_template
+
+app = Flask(__name__)
+
+@app.route("/")
+def index():
+    return "You are at the index!"
+    
+@app.route("/sample")
+def sample():
+    return "You have reached the sample page!"
+    
+@app.route("/search")
+def search():
+    return render_template('search.html')

web/templates/search.html

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+<html>
+    <head>
+        <title>CS50 Search</title>
+    </head>
+    <body>
+        <div>
+            <form action="https://www.google.com/search" method="get">
+                <input name="q" type="text"/>
+                <br/>
+                <input type="submit" value="CS50 Search"/>
+            </form>
+        </div>
+    </body>
+</html>