3
votes
Accepted
What's the most efficient prime-finding algorithm? (Week 1 Practice Problems)
You can likely google it to find out. But the first thing that comes to mind is to lower the high limit of numbers to check. Simply put, if you're checking whether N is a prime, you need only see if ...
- 69.2k
2
votes
Selection Sort: Holes in Logic
The main problem is in the following statements:
string answer = 0;
answer[i]= min_value;
Let's see if I can explain it clearly;
a variable of type string is really a typedef (an alias in other ...
- 5,179
1
vote
Accepted
Converting roman numerals to integer
Efficiency
Your code is terribly inefficient and that can be enhanced even without jumping to a switch statement.
Right now every one of your if-statements is individually checked every time...
This ...
- 1,636
1
vote
Accepted
How can i arrange the output in decending order In this program?
In the for loop use, (i = n, i >= 0, i--). This will start from n and go to zero so the output is in descending order.
Hope this helps. If it does, please check the tickmark.
- 1,016
1
vote
Accepted
rejects a height of 9, and then accepts a height of 2 expected "" #"\n"##"", not ""
The code is supposed to keep prompting for a new value until the user enters an acceptable number. This code doesn't do that. Instead, it will ask for a number, and if that number is out of range, ...
- 69.2k
1
vote
Accepted
Pset 2 - loop question
Maybe you're just overthinking it a little? ;-)
Just move the printf(Success) statement below the for loop. If the test fails, it's going to exit through the return statement. Otherwise, the code ...
- 69.2k
1
vote
While Loop in C only executing once and then stopping
So after you get an error message that says "Out of Range", when you try to enter another value that is out of range, the loop stops. There is a "clearKeyboard()" function that is called in here - ...
- 11
1
vote
Accepted
Infinite loop in pset2 Initials
It's actually in a loop that prints the first initial that follows a space. You can test this by entering 3 names instead of 2, like david willima smith. It would repeat w's infinitely.
The problem ...
- 69.2k
1
vote
pset2 initials.c, returning first initial
The previous answer points you some mistakes, you should correct them. But your major conceptual problem is here:
if (isspace(name[i]) == true && .....)
it does not work like that. isspace() ...
- 1,139
1
vote
pset2 initials.c, returning first initial
Problem with the while version here: while (i <= 1 && i<=n). It will execute the loop exactly once. After i++, i is 2, and i <= 1 is false, loop over. (I think there's a problem with ...
- 28.6k
1
vote
Resize.c is not copying pixels correctly
A quick way to format code properly: select the code and click the {} in the format bar, to-da. This can be done on initial post or you can edit the question and fix the format.
Here is the pseudo ...
- 28.6k
1
vote
Accepted
PSET 4 - Recover.c only recovering one empty file
infile is a string, it's content is the expression "card.raw".
So what exactly is this loop supposed to accomplish?
for (int i = 0; i < *infile; i++)
- 2,595
Only top scored, non community-wiki answers of a minimum length are eligible