CS50 2018 - Lecture 2 - Arrays

00:00:00 - Introduction
00:00:54 - Week 1 Recap
00:04:47 - Preprocessing
00:07:05 - Compiling
00:09:01 - Assembling
00:09:29 - Linking
00:12:36 - buggy0.c
00:16:13 - buggy2.c
00:25:14 - Debugging Tools
00:26:02 - RAM
00:29:11 - Arrays
00:30:01 - scores0.c
00:41:47 - scores2.c
00:49:45 - scores4.c
00:52:21 - string0.c
01:00:42 - Null Terminator
01:03:06 - strlen.c
01:06:16 - ascii0.c
01:09:39 - capitalize0.c
01:12:23 - capitalize1.c
01:16:38 - argv0.c
01:21:25 - argv1.c
01:24:52 - Ciphering
01:33:15 - exit.c
01:36:58 - Finding 50
01:40:38 - Sorting on Stage
01:50:27 - Bubble Sort
01:51:34 - Selection Sort
01:52:23 - Computational Complexity
01:57:42 - Merge Sort
02:04:29 - Comparing Sorts Visually

[borkers]

Turn on subtitles at 46:08
I appreciate the subtle humor of whoever wrote the subtitles, kudos to you.

[joeyvico]

Thank you a million times Mr. David Malan for your teachings. You made me love computer science even more if that was possible.

[sanr]

I have never really understood what are these algorithms.. Thank you very much Mr. Malan, all heroes don't wear capes!

[fylyp]

Very cinematic camera work on these videos. Love it.

[nemohoes]

im thankful for this whole course being provided for free. thank you so much!

[gopalsaxena]

thanku for providing the course for free

[JustINformU]

He’s a really good instructor. Most cs constructors are very mundane and uninteresting

[marlena]

Thanks a lot to Harvard University and David J. Malan for this courses . This teacher makes me love about computer science .

[panganibanjebwilfred]

I am able to learn deeper about computer science and not just half-ass learning. Thank you, Mr. David.

[degitalweb]

David malan is awesome teacher i guess cs50 should teach in grade 10 for all the kids so they can chose a path to COMPUTER SCIENCE field. They way DAVID MALAN tought this class is superb n whole cs50 staff is very helpful love it. Thank you @Davidmallan

[wonpec]

1:00:37 A grammar question
string s = get_string("Input: ");

printf("Output:\n");
for (int i = 0, n = strlen(s); i < n; i++)
{
printf("%c\n", s[i]);
}


in here s initialized as a string. how it can be used as string array -> s[i] without definition???

[braham.prakash]

Well i am a arts graduate and still watching this course!


Yes i am able to understand it very easily

[droptozro]

Really curious after the 1st week(lecture 2 technically), how many drop out after those Problem Sets of Mario and Cash/Credit? Those were good challenges. I'd been doing Python for a couple months and thought I could take C on the "more comfortable" level but I was wrong. I didn't even attempt Credit. I looked up someone else's solution online and realized I didn't have that capacity yet so I didn't submit one.

[robinkohrs]

why does the c code not get compiled directly to binary? Why the intermediate assemly code?

[peter_castle]

David is an example and a inspiration!

[gavinwebster]

Sonification of the final algorithm comparisons, very cool.

[MultiSilverbolt]

How did they crop David out without a blue/green screen?

[tanieltari]

Why couldnt i just define COUNT so it will not consume any memory and will be just evaluated in preprocessing state?

[saiananth]

After including the header files like cs50.h, math.h is it necessary to mention them in clang while compiling

[finalsecretofchrono]

The FAQ is down for CS50 EDX. Anyone know if we are allowed to resubmit problem sets?