factors Questions
4
I'm trying to solve problem 3 from http://projecteuler.net. However, when I run thing program nothing prints out.
What am I doing wrong?
Problem: What is the largest prime factor of the number 600...
Hackneyed asked 7/3, 2013 at 18:47
4
Solved
I want to do the opposite of this question, and sort of the opposite of this question, though that's about legends, not the plot itself.
The other SO questions seem to be asking about how to keep ...
4
Solved
I am relatively new to R. For my assignment I have to start by conducting a T-Test by looking at the effect of a politician's (Conservative or Labour) wealth on their real gross wealth and real net...
2
Solved
I have a set of variables coded as binomial.
Pre VALUE_1 VALUE_2 VALUE_3 VALUE_4 VALUE_5 VALUE_6 VALUE_7 VALUE_8
1 1 0 0 0 0 0 1 0 0
2 1 0 0 0 0 1 0 0 0
3 1 0 0 0 0 1 0 0 0
4 1 0 0 0 0 1 0 0 ...
1
I have a dataset where I am trying to use multiple imputation with the packages mice, miceadds and micemd for a categorical/factor variable in a multilevel setting. I am able to use the method 2l.2...
Evie asked 18/12, 2019 at 0:14
7
I have a for loop that checks if a number is a factor of a number, then checks if that factor is prime, and then it adds it to an array. Depending on the original number, I will get an error saying...
Deguzman asked 22/2, 2015 at 21:54
0
Much like this poster, I am trying to make a table in r where I am grouping by levels of a factor. I am happy to do this in gt or kabbleExtra or any other package which makes a graph like this poss...
Absolutely asked 29/4, 2022 at 12:44
5
Solved
Maybe this is simple but I can't find answer on web. I have problem with mean calculation by factors by level.
My data looks typicaly:
factor, value
a,1
a,2
b,1
b,1
b,1
c,1
I want to get vector ...
6
Solved
It's easy enough to make a simple sieve:
for (int i=2; i<=N; i++){
if (sieve[i]==0){
cout << i << " is prime" << endl;
for (int j = i; j<=N; j+=i){
sieve[j]=1;...
Quadragesimal asked 20/4, 2012 at 15:47
11
Solved
I'm trying to refactor this algorithm to make it faster. What would be the first refactoring here for speed?
public int GetHowManyFactors(int numberToCheck)
{
// we know 1 is a factor and the nu...
Rotate asked 28/12, 2010 at 21:1
4
Solved
My problem is as follows:
I have a data set containing several factor variables, which have the same categories. I need to find the category, which occurs most frequently for each row. In case of t...
7
Solved
Original data frame:
v1 = sample(letters[1:3], 10, replace=TRUE)
v2 = sample(letters[1:3], 10, replace=TRUE)
df = data.frame(v1,v2)
df
v1 v2
1 b c
2 a a
3 c c
4 b a
5 c c
6 c b
7 a a
8 a b
9 ...
13
Solved
Numbers whose only prime factors are 2, 3, or 5 are called ugly numbers.
Example:
1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, ...
1 can be considered as 2^0.
I am working on finding nth ugly number. Note...
Keenakeenan asked 5/1, 2011 at 1:17
1
Solved
I'm trying to run lm() on only a subset of my data, and running into an issue.
dt = data.table(y = rnorm(100), x1 = rnorm(100), x2 = rnorm(100), x3 = as.factor(c(rep('men',50), rep('women',50)))) ...
14
I have something like this down:
int f = 120;
for(int ff = 1; ff <= f; ff++){
while (f % ff != 0){
}
Is there anything wrong with my loop to find factors? I'm really confused as to the work...
Horrified asked 27/12, 2011 at 16:49
9
What is the most efficient algorithm to print all unique combinations of factors of a positive integer. For example if the given number is 24 then the output should be
24*1
12*2
8*3
6*4
6*2*2
4*3...
Luxate asked 27/2, 2013 at 21:7
5
Solved
If memory servies me, in R there is a data type called factor which when used within a DataFrame can be automatically unpacked into the necessary columns of a regression design matrix. For example,...
Amphiboly asked 17/4, 2012 at 18:26
1
Solved
I have the following setup.
df <- data.frame(aa = rnorm(1000), bb = rnorm(1000))
apply(df, 2, typeof)
# aa bb
#"double" "double"
apply(df, 2, class)
# aa bb
#"numeric" "numeric"
Then I...
2
Solved
I am making a tilemap in ggplot as below. 2 questions:
1) How can I expand the x-axis limits to label my groups at x = 4?
2) How can I put horizontal lines between Groups (i.e. a line between 1 an...
1
Solved
I'm trying to do a simple linear regression model in R.
there are three factor variables in the model.
the model is
lm(Exercise ~ Econ + Job + Position)
where "Exercise" is numeric dependent ...
1
Solved
7
Solved
I want to find all the exact divisors of a number.
Currently I have this:
{
int n;
int i=2;
scanf("%d",&n);
while(i<=n/2)
{
if(n%i==0)
printf("%d,",i);
i++;
}
getch();
}
Is ther...
Freckle asked 28/7, 2012 at 8:0
2
Solved
We are given two numbers M and N. We need to count the sum of all the integers below N, which are divisible by M.
Is it possible to solve with O(1) complexity?
I know it is a very simple program ...
Crocker asked 8/7, 2016 at 12:15
1
I'm not sure if I completely understand how factors work. So please correct me in an easy to understand way if I'm wrong.
I always assumed that when doing regressions and what not, R behind the sc...
Rox asked 24/2, 2016 at 7:8
2
Solved
One of the requirements for Telegram Authentication is decomposing a given number into 2 prime co-factors. In particular P*Q = N, where N < 2^63
How can we find the smaller prime co-factor, su...
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