Last login: Mon Sep 14 08:55:06 on ttys001

The default interactive shell is now zsh.
To update your account to use zsh, please run `chsh -s /bin/zsh`.
For more details, please visit https://support.apple.com/kb/HT208050.
(base) MAC:Mon Sep 14:09:00:dg> cd
(base) MAC:Mon Sep 14:09:00:~> cd T1/4260
-bash: cd: T1/4260: No such file or directory
(base) MAC:Mon Sep 14:09:00:~> cd
(base) MAC:Mon Sep 14:09:00:~> cd 20202021/T1/4260/
(base) MAC:Mon Sep 14:09:01:4260> ls
interfaces     ovipositor.jpg students       week1          week2          week3
(base) MAC:Mon Sep 14:09:01:4260> mkdir bigFraction
(base) MAC:Mon Sep 14:09:01:4260> cd bigFraction/
(base) MAC:Mon Sep 14:09:01:bigFraction> jshell
|  Welcome to JShell -- Version 14.0.1
|  For an introduction type: /help intro

jshell> BigInteger a = BigInteger.valueOf(7776);
a ==> 7776

jshell> BigInteger b = BigInteger.valueOf(1048576);
b ==> 1048576

jshell> a.gcd(b)
$3 ==> 32

jshell> BigInteger A = a.divide(a.gcd(b))
A ==> 243

jshell> BigInteger B = b.divide(a.gcd(b))
B ==> 32768

jshell> A.gcd(B)
$6 ==> 1

jshell> A < B
|  Error:
|  bad operand types for binary operator '<'
|    first type:  java.math.BigInteger
|    second type: java.math.BigInteger
|  A < B
|  ^---^

jshell> a.compareTo(b)
$7 ==> -1

jshell> A.compareTo(B)
$8 ==> -1

jshell> b.compareTo(a)
$9 ==> 1

jshell> 

jshell> /exit
|  Goodbye
(base) MAC:Mon Sep 14:09:38:bigFraction> ls
(base) MAC:Mon Sep 14:09:38:bigFraction> vi bigInt.txt
(base) MAC:Mon Sep 14:09:38:bigFraction> ls
bigInt.txt
(base) MAC:Mon Sep 14:09:38:bigFraction> B
(base) MAC:Mon Sep 14:09:38:4240> ls
convert     keethan.txt listGames   roster.csv  stringPlay  vpn.txt
functions   lab1        names.txt   roster.txt  students    week2
(base) MAC:Mon Sep 14:09:38:4240> mkdir week3
(base) MAC:Mon Sep 14:09:38:4240> cd week3
(base) MAC:Mon Sep 14:09:38:week3> ls
(base) MAC:Mon Sep 14:09:38:week3> python
Python 3.7.4 (default, Aug 13 2019, 15:17:50) 
[Clang 4.0.1 (tags/RELEASE_401/final)] :: Anaconda, Inc. on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> def square(x): return x*x
... 
>>> square(5)
25
>>> cows = square
>>> cows(5)
25
>>> # a function name is a variable name.
... # this name points at the code in memory that runs the function.
... 
>>> type(cows)
<class 'function'>
>>> 
(base) MAC:Mon Sep 14:09:43:week3> vi table.py
(base) MAC:Mon Sep 14:09:50:week3> python table.py
<tr><td>5</td><td>25</td></tr>

(base) MAC:Mon Sep 14:09:50:week3> !vi
vi table.py
(base) MAC:Mon Sep 14:09:56:week3> python table.py 
<tr><td>5</td><td>25</td></tr>

[1, 2, 3, 4, 5, 6] <function square at 0x7fddad62a200>
(base) MAC:Mon Sep 14:09:56:week3> !vi
vi table.py
(base) MAC:Mon Sep 14:09:56:week3> !p
python table.py 
<tr><td>5</td><td>25</td></tr>

None
(base) MAC:Mon Sep 14:09:56:week3> !vi
vi table.py
(base) MAC:Mon Sep 14:09:56:week3> !p
python table.py 
<tr><td>5</td><td>25</td></tr>

<table>
<tr><th>x</th><th>f(x)</th></tr>
<tr><td>1</td><td>1</td></tr>
<tr><td>2</td><td>4</td></tr>
<tr><td>3</td><td>9</td></tr>
<tr><td>4</td><td>16</td></tr>
<tr><td>5</td><td>25</td></tr>
<tr><td>6</td><td>36</td></tr>
</table>

(base) MAC:Mon Sep 14:09:56:week3> !vi
vi table.py
(base) MAC:Mon Sep 14:09:58:week3> python
Python 3.7.4 (default, Aug 13 2019, 15:17:50) 
[Clang 4.0.1 (tags/RELEASE_401/final)] :: Anaconda, Inc. on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> def square(x): return x*x
... 
>>> str(square(
... ))
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: square() missing 1 required positional argument: 'x'
>>> str(square)
'<function square at 0x7faddfe737a0>'
>>> 
(base) MAC:Mon Sep 14:10:00:week3> ls
table.py
(base) MAC:Mon Sep 14:10:00:week3> vi table.py
(base) MAC:Mon Sep 14:10:00:week3> python table.py
<tr><td>5</td><td>25</td></tr>

<table>
<tr><th>x</th><th>f(x)</th></tr>
<tr><td>1</td><td>1</td></tr>
<tr><td>2</td><td>4</td></tr>
<tr><td>3</td><td>9</td></tr>
<tr><td>4</td><td>16</td></tr>
<tr><td>5</td><td>25</td></tr>
<tr><td>6</td><td>36</td></tr>
</table>

<table>
<tr><th>x</th><th>f(x)</th></tr>
<tr><td>0.1</td><td>0.010000000000000002</td></tr>
<tr><td>0.2</td><td>0.04000000000000001</td></tr>
<tr><td>0.3</td><td>0.09</td></tr>
<tr><td>0.4</td><td>0.16000000000000003</td></tr>
<tr><td>0.5</td><td>0.25</td></tr>
<tr><td>0.6</td><td>0.36</td></tr>
</table>

(base) MAC:Mon Sep 14:10:00:week3> ls
table.py
(base) MAC:Mon Sep 14:10:02:week3> vi pancakes.py
(base) MAC:Mon Sep 14:10:03:week3> python pancakes.py
{'x': 5}
{'x': 5}
125
{'__name__': '__main__', '__doc__': None, '__package__': None, '__loader__': <_frozen_importlib_external.SourceFileLoader object at 0x7f9fd8dc42d0>, '__spec__': None, '__annotations__': {}, '__builtins__': <module 'builtins' (built-in)>, '__file__': 'pancakes.py', '__cached__': None, 'square': <function square at 0x7f9fd8e04320>, 'cube': <function cube at 0x7f9fd8e04440>, 'x': 5}
(base) MAC:Mon Sep 14:10:04:week3> vi build.py 
(base) MAC:Mon Sep 14:14:22:week3> !p
python pancakes.py
{'x': 5}
{'x': 5}
125
{'__name__': '__main__', '__doc__': None, '__package__': None, '__loader__': <_frozen_importlib_external.SourceFileLoader object at 0x7fb25d4c42d0>, '__spec__': None, '__annotations__': {}, '__builtins__': <module 'builtins' (built-in)>, '__file__': 'pancakes.py', '__cached__': None, 'square': <function square at 0x7fb25d604320>, 'cube': <function cube at 0x7fb25d604440>, 'x': 5}
(base) MAC:Mon Sep 14:14:22:week3> python build.py
<tr><td>5</td><td>25</td></tr>

<table>
<tr><th>x</th><th>f(x)</th></tr>
<tr><td>1</td><td>1</td></tr>
<tr><td>2</td><td>4</td></tr>
<tr><td>3</td><td>9</td></tr>
<tr><td>4</td><td>16</td></tr>
<tr><td>5</td><td>25</td></tr>
<tr><td>6</td><td>36</td></tr>
<tr><td>7</td><td>49</td></tr>
<tr><td>8</td><td>64</td></tr>
<tr><td>9</td><td>81</td></tr>
</table>

<table>
<tr><th>x</th><th>f(x)</th></tr>
<tr><td>0.1</td><td>0.010000000000000002</td></tr>
<tr><td>0.2</td><td>0.04000000000000001</td></tr>
<tr><td>0.3</td><td>0.09</td></tr>
<tr><td>0.45</td><td>0.2025</td></tr>
<tr><td>0.6</td><td>0.36</td></tr>
<tr><td>0.9</td><td>0.81</td></tr>
<tr><td>0.95</td><td>0.9025</td></tr>
</table>

(base) MAC:Mon Sep 14:14:22:week3> !vi
vi build.py 
(base) MAC:Mon Sep 14:14:24:week3> ls
build.py    pancakes.py table.py
(base) MAC:Mon Sep 14:14:24:week3> vi build.py
(base) MAC:Mon Sep 14:14:26:week3> !p
python build.py
<tr><td>5</td><td>25</td></tr>

<table>
<tr><th>x</th><th>f(x)</th></tr>
<tr><td>1</td><td>1</td></tr>
<tr><td>2</td><td>4</td></tr>
<tr><td>3</td><td>9</td></tr>
<tr><td>4</td><td>16</td></tr>
<tr><td>5</td><td>25</td></tr>
<tr><td>6</td><td>36</td></tr>
<tr><td>7</td><td>49</td></tr>
<tr><td>8</td><td>64</td></tr>
<tr><td>9</td><td>81</td></tr>
</table>

<table>
<tr><th>x</th><th>f(x)</th></tr>
<tr><td>0.1</td><td>0.010000000000000002</td></tr>
<tr><td>0.2</td><td>0.04000000000000001</td></tr>
<tr><td>0.3</td><td>0.09</td></tr>
<tr><td>0.45</td><td>0.2025</td></tr>
<tr><td>0.6</td><td>0.36</td></tr>
<tr><td>0.9</td><td>0.81</td></tr>
<tr><td>0.95</td><td>0.9025</td></tr>
</table>

<table>
<tr><th>x</th><th>f(x)</th></tr>
<tr><td>0</td><td>0.0</td></tr>
<tr><td>1</td><td>0.01745240643728351</td></tr>
<tr><td>2</td><td>0.03489949670250097</td></tr>
<tr><td>3</td><td>0.05233595624294383</td></tr>
<tr><td>4</td><td>0.0697564737441253</td></tr>
<tr><td>5</td><td>0.08715574274765817</td></tr>
<tr><td>6</td><td>0.10452846326765346</td></tr>
<tr><td>7</td><td>0.12186934340514748</td></tr>
<tr><td>8</td><td>0.13917310096006544</td></tr>
<tr><td>9</td><td>0.15643446504023087</td></tr>
<tr><td>10</td><td>0.17364817766693033</td></tr>
<tr><td>11</td><td>0.1908089953765448</td></tr>
<tr><td>12</td><td>0.20791169081775931</td></tr>
<tr><td>13</td><td>0.224951054343865</td></tr>
<tr><td>14</td><td>0.24192189559966773</td></tr>
<tr><td>15</td><td>0.25881904510252074</td></tr>
<tr><td>16</td><td>0.27563735581699916</td></tr>
<tr><td>17</td><td>0.29237170472273677</td></tr>
<tr><td>18</td><td>0.3090169943749474</td></tr>
<tr><td>19</td><td>0.32556815445715664</td></tr>
</table>

(base) MAC:Mon Sep 14:14:26:week3> 
(base) MAC:Mon Sep 14:14:26:week3> !vi
vi build.py
(base) MAC:Mon Sep 14:14:27:week3> vi index.php
(base) MAC:Mon Sep 14:14:27:week3> ls
babies.py   file        last.txt    showList.py
build.py    foo.py      pancakes.py table.py
(base) MAC:Wed Sep 16:08:39:week3> cd ..
(base) MAC:Wed Sep 16:08:39:4240> ls
convert     keethan.txt listGames   roster.csv  stringPlay  vpn.txt     week3
functions   lab1        names.txt   roster.txt  students    week2
(base) MAC:Wed Sep 16:08:39:4240> A
(base) MAC:Wed Sep 16:08:39:4260> cd interfaces/
(base) MAC:Wed Sep 16:08:39:interfaces> ls
Circle.class    Rectangle.class Shape.class     Triangle.class  session.txt
Circle.java     Rectangle.java  Shape.java      Triangle.java
(base) MAC:Wed Sep 16:08:39:interfaces> sftp utility0
Connected to utility0.
sftp> cd public_html/currentClasses/4260/Sep
sftp> cd 16Sep20
sftp> get *.java
Fetching /home/morrison/public_html/currentClasses/4260/Sep/16Sep20/Circle.java to Circle.java
/home/morrison/public_html/currentClasses/4260/Sep/16S 100%  579     5.8KB/s   00:00    
Fetching /home/morrison/public_html/currentClasses/4260/Sep/16Sep20/Polygon.java to Polygon.java
/home/morrison/public_html/currentClasses/4260/Sep/16S 100%   70     0.7KB/s   00:00    
Fetching /home/morrison/public_html/currentClasses/4260/Sep/16Sep20/Rectangle.java to Rectangle.java
/home/morrison/public_html/currentClasses/4260/Sep/16S 100%  819     8.0KB/s   00:00    
Fetching /home/morrison/public_html/currentClasses/4260/Sep/16Sep20/Shape.java to Shape.java
/home/morrison/public_html/currentClasses/4260/Sep/16S 100%  114     1.1KB/s   00:00    
Fetching /home/morrison/public_html/currentClasses/4260/Sep/16Sep20/Triangle.java to Triangle.java
/home/morrison/public_html/currentClasses/4260/Sep/16S 100%  930     9.3KB/s   00:00    
sftp> quit
(base) MAC:Wed Sep 16:08:40:interfaces> ls
Circle.class    Polygon.java    Rectangle.java  Shape.java      Triangle.java
Circle.java     Rectangle.class Shape.class     Triangle.class  session.txt
(base) MAC:Wed Sep 16:08:40:interfaces> java *.java
error: can't find main(String[]) method in class: Circle
(base) MAC:Wed Sep 16:08:40:interfaces> javac *.java
(base) MAC:Wed Sep 16:08:40:interfaces> Shape s = new Circle(5);
-bash: syntax error near unexpected token `('
(base) MAC:Wed Sep 16:08:40:interfaces> jshell
|  Welcome to JShell -- Version 14.0.1
|  For an introduction type: /help intro

jshell> /open Shape.java

jshell> /open Circle.java

jshell> /open Rectangle.java
|  Error:
|  cannot find symbol
|    symbol:   class Polygon
|  public class Rectangle implements Polygon
|                                    ^-----^
|  Error:
|  method does not override or implement a method from a supertype
|      @Override
|      ^-------^
|  Error:
|  method does not override or implement a method from a supertype
|      @Override
|      ^-------^
|  Error:
|  method does not override or implement a method from a supertype
|      @Override
|      ^-------^
|  Error:
|  method does not override or implement a method from a supertype
|      @Override
|      ^-------^

jshell> /open Polygon.java

jshell> /open Rectangle.java

jshell> /open Triangle.java

jshell> Shape s = new Circle(5);
s ==> Circle(5.0)

jshell> s.area(
   ...> )
$7 ==> 78.53981633974483

jshell> Polygon t = new Circle(5);
|  Error:
|  incompatible types: Circle cannot be converted to Polygon
|  Polygon t = new Circle(5);
|              ^-----------^

jshell> Polygon t = new Rectangle(6,8);
t ==> Rectangle(8.0, 6.0)

jshell> t.area()
$9 ==> 48.0

jshell> t.numSides()
$10 ==> 4

jshell> Shape u = new Rectangle(5,5);;
u ==> Rectangle(5.0, 5.0)

jshell> u.area()
$13 ==> 25.0

jshell> u.numSides()
|  Error:
|  cannot find symbol
|    symbol:   method numSides()
|  u.numSides()
|  ^--------^

jshell> /exit
|  Goodbye
(base) MAC:Wed Sep 16:09:00:interfaces> python
Python 3.7.4 (default, Aug 13 2019, 15:17:50) 
[Clang 4.0.1 (tags/RELEASE_401/final)] :: Anaconda, Inc. on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> f = lambda x: x[0]
>>> 
>>> type(f)
<class 'function'>
>>> f("cats")
'c'
>>> f([2,3,3])
2
>>> #  this is x -> x[0]
... 
>>> f(range(2,4))
2
>>> (lambda x:x*x)(6)
36
>>> quit()
(base) MAC:Wed Sep 16:09:03:interfaces> vi table.py
(base) MAC:Wed Sep 16:09:07:interfaces> python table.py 
(base) MAC:Wed Sep 16:09:07:interfaces> !vi
vi table.py
(base) MAC:Wed Sep 16:09:08:interfaces> python table.py 
  File "table.py", line 13
    
    ^
SyntaxError: unexpected EOF while parsing
(base) MAC:Wed Sep 16:09:09:interfaces> !vi
vi table.py
(base) MAC:Wed Sep 16:09:09:interfaces> !p
python table.py 
None
(base) MAC:Wed Sep 16:09:09:interfaces> !vi
vi table.py
(base) MAC:Wed Sep 16:09:09:interfaces> !p
python table.py 
<table>
<tr><th>x</th><th>f(x)</th></tr>
<tr><td>{item}</td><td>{f(item)}</td></tr>
<tr><td>{item}</td><td>{f(item)}</td></tr>
<tr><td>{item}</td><td>{f(item)}</td></tr>
<tr><td>{item}</td><td>{f(item)}</td></tr>
<tr><td>{item}</td><td>{f(item)}</td></tr>
<tr><td>{item}</td><td>{f(item)}</td></tr>
<tr><td>{item}</td><td>{f(item)}</td></tr>
<tr><td>{item}</td><td>{f(item)}</td></tr>
<tr><td>{item}</td><td>{f(item)}</td></tr>
<tr><td>{item}</td><td>{f(item)}</td></tr>
</table>

(base) MAC:Wed Sep 16:09:09:interfaces> !vi
vi table.py
(base) MAC:Wed Sep 16:09:09:interfaces> !p
python table.py 
<table>
<tr><th>x</th><th>f(x)</th></tr>
<tr><td>1</td><td>1</td></tr>
<tr><td>2</td><td>8</td></tr>
<tr><td>3</td><td>27</td></tr>
<tr><td>4</td><td>64</td></tr>
<tr><td>5</td><td>125</td></tr>
<tr><td>6</td><td>216</td></tr>
<tr><td>7</td><td>343</td></tr>
<tr><td>8</td><td>512</td></tr>
<tr><td>9</td><td>729</td></tr>
<tr><td>10</td><td>1000</td></tr>
</table>

(base) MAC:Wed Sep 16:09:09:interfaces> !vi
vi table.py
(base) MAC:Wed Sep 16:09:11:interfaces> !p
python table.py 
  File "table.py", line 15
    
                                                 ^
SyntaxError: unexpected EOF while parsing
(base) MAC:Wed Sep 16:09:11:interfaces> !vi
vi table.py
(base) MAC:Wed Sep 16:09:11:interfaces> !p
python table.py 
<table>
<tr><th>x</th><th>f(x)</th></tr>
<tr><td>1</td><td>1</td></tr>
<tr><td>2</td><td>8</td></tr>
<tr><td>3</td><td>27</td></tr>
<tr><td>4</td><td>64</td></tr>
<tr><td>5</td><td>125</td></tr>
<tr><td>6</td><td>216</td></tr>
<tr><td>7</td><td>343</td></tr>
<tr><td>8</td><td>512</td></tr>
<tr><td>9</td><td>729</td></tr>
<tr><td>10</td><td>1000</td></tr>
</table>

<table>
<tr><th>x</th><th>f(x)</th></tr>
<tr><td>1</td><td>1.0</td></tr>
<tr><td>2</td><td>1.4142135623730951</td></tr>
<tr><td>3</td><td>1.7320508075688772</td></tr>
<tr><td>4</td><td>2.0</td></tr>
<tr><td>5</td><td>2.23606797749979</td></tr>
<tr><td>6</td><td>2.449489742783178</td></tr>
<tr><td>7</td><td>2.6457513110645907</td></tr>
<tr><td>8</td><td>2.8284271247461903</td></tr>
<tr><td>9</td><td>3.0</td></tr>
<tr><td>10</td><td>3.1622776601683795</td></tr>
<tr><td>11</td><td>3.3166247903554</td></tr>
<tr><td>12</td><td>3.4641016151377544</td></tr>
<tr><td>13</td><td>3.605551275463989</td></tr>
<tr><td>14</td><td>3.7416573867739413</td></tr>
<tr><td>15</td><td>3.872983346207417</td></tr>
<tr><td>16</td><td>4.0</td></tr>
<tr><td>17</td><td>4.123105625617661</td></tr>
<tr><td>18</td><td>4.242640687119285</td></tr>
<tr><td>19</td><td>4.358898943540674</td></tr>
<tr><td>20</td><td>4.47213595499958</td></tr>
</table>

(base) MAC:Wed Sep 16:09:11:interfaces> !vi
vi table.py
(base) MAC:Wed Sep 16:09:12:interfaces> jshell
|  Welcome to JShell -- Version 14.0.1
|  For an introduction type: /help intro

jshell> x = [-3, 6, -8, 0, 9, 1, -5, 2]
|  Error:
|  illegal start of expression
|  x = [-3, 6, -8, 0, 9, 1, -5, 2]
|      ^

jshell> int [] x = new int[]{-3, 6, -8, 0, 9, 1, -5, 2}
x ==> int[8] { -3, 6, -8, 0, 9, 1, -5, 2 }

jshell> Collections.sort(x)
|  Error:
|  no suitable method found for sort(int[])
|      method java.util.Collections.<T>sort(java.util.List<T>) is not applicable
|        (cannot infer type-variable(s) T
|          (argument mismatch; int[] cannot be converted to java.util.List<T>))
|      method java.util.Collections.<T>sort(java.util.List<T>,java.util.Comparator<? super T>) is not applicable
|        (cannot infer type-variable(s) T
|          (actual and formal argument lists differ in length))
|  Collections.sort(x)
|  ^--------------^

jshell> ArrayList<Integer> al = new ArrayList<>();
al ==> []

jshell> al.addAll(x);
|  Error:
|  incompatible types: int[] cannot be converted to java.util.Collection<? extends java.lang.Integer>
|  al.addAll(x);
|            ^

jshell> for(int t: x){al.add(t);}

jshell> x
x ==> int[8] { -3, 6, -8, 0, 9, 1, -5, 2 }

jshell> al
al ==> [-3, 6, -8, 0, 9, 1, -5, 2]

jshell> Collections.sort(al);

jshell> al
al ==> [-8, -5, -3, 0, 1, 2, 6, 9]

jshell> Collections.sort(al, (x, y) -> x*x - y*y);

jshell> al
al ==> [0, 1, 2, -3, -5, 6, -8, 9]

jshell>