Questions tagged [week3]

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Lab 3 error message: Incorrect assignment of sorts

When I try to submit my answers I get these messages on running check50: :) answers.txt :) answers all questions :( correctly identifies each sort Incorrect assignment of sorts. I'm not sure I'm ...
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collatz function

So in a week 3 short, Doug asks us to define a file collatz.c that returns the number of steps taken to do the collatz conjecture on different numbers and I ended up with this. #include <stdio.h>...
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Plurality: Code does not print out the winner

My code does not print out the winners at all...It only outputs their names. Is anybody able to pick out what's incorrect or if the code is missing something? Many thanks in advance :) #include <...
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PSET 3 runoff is_tie function

New to this platform, forgive me if there are some norm or etiquette I may be missing. Please feel free to provide feedback on anything that is incorrect. This is for the is-tie function alone. I ...
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why am i getting an " use of undeclared identifier 'j' or 'i' " on the vote and tabulate functions?

shouldn't the compiler consider the 'i' and the 'j' from the for loop in the 'main' function to be the voter and rank ints passed to the functions #include <cs50.h> #include <stdio.h&...
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Can you help me to understand why does the output of time function vary every time while applying it on same file with same sort type?

When I run for example (time ./sort1 random5000.txt) it gives me real, syst, and user time. But if I run the same command again it will gives me different time results! I can't understand why this ...
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when to search in binary search right, when left?

in the binary search algorithm: If no items Return false If middle item is 50 Return true Else if 50 < middle item Search left half Else if 50 > middle item Search right half like can we do the ...
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Error testing in plurality question

I already test my code with all possible input and it working fine but when I run with check50 cs50/problems/2020/x/plurality, I got a couple of error result :( print_winner identifies Bob as ...
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call stacks short vedio

in the call stacks short there is a code when doug explains that the function returns (1) i want to know how the c knows or the computer knows the difference between returning (1) mean the program ...
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Hexadecimal video unaccessible

The Hexadecimal video in Week 3 is not accessible.
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Find.c - Binary Search probable integer overflow

Here's the gist: https://gist.github.com/Securiteru/a83e4f1a028acd0b1013def793b5dcdc And the output: ... 60697 61151 61190 61275 61460 61608 61618 61746 61750 61822 62111 62178 62183 62311 62448 ...
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Concept of run time in lecture week 3

In week 3's lecture, David talked about the concept of runtime where the worst possible scenario for say insertion sort is O(n squared) and the best case scenario would be omega(n). I dont understand ...
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Week 3 Binary Search Video Short question

I just watched the short for binary search and I'm having trouble understanding how making a conditional of (max < min) would mean that the number is not in your array (timestamp 04:05). I get ...
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Pointers basic Concept with functions

http://cslibrary.stanford.edu/102/PointersAndMemory.pdf Reading this told us that when function gets called its locals gets called and when it exits its locals gets destroyed so that we can't use its ...
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week3 lecture very beginning

Week3 Lecture: A student asked a question of my mind how do computer know about the argc ? I really don't understand how is this argc working In case we printed "zymla" we gave argv[1] as our first ...
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vigenere ,, segmentation fault core dumped [duplicate]

the code compiles well ,, but an error ocures
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Initials ,, The Right output but not accepted

I have all outputs Right Desperate Help Yelling
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