Linked Questions
15 questions linked to/from Iterate until condition is met
5
votes
2
answers
438
views
Short circuit logical operators [duplicate]
Suppose I want to compute $f(1)\vee f(2) \vee \ldots \vee f(10^{10})$, but I know a priori that $f(n)$ is True for some $n \ll 10^{10}$ with high probability. For ...
- 267
0
votes
1
answer
140
views
Selecting 1st $n$ elements meeting criterion from very long list [duplicate]
I need to select n elements from a list, which satisfy a condition. I need something like
...
- 35
118
votes
9
answers
6k
views
Functional style using lazy lists?
Let's say I want to answer the question "what are the first 400 palindromic prime numbers?"
The first approach that comes to my mind from the set of languages that I know is to use some sort ...
- 6,483
52
votes
2
answers
8k
views
Scan vs. Map vs. Apply
I cannot understand the difference between Apply, Scan, and Map.
I have tried to play with ...
- 3,886
11
votes
5
answers
804
views
How to find first list element that differs from average of N previous elements by more than a given amount?
Given a list of real numbers, I need to write a function that returns the value of the first element in the list that differs from the mean of the previous $N$ elements by greater than $P$ standard ...
- 528
7
votes
9
answers
1k
views
Find the smallest positive integer that satisfies a certain condition
I know Mathematica is really powerful when it comes to functional operations like applying a list of tasks to a list of variables. Sometimes I feel like it isn't the most powerful tool when it comes ...
- 1,005
15
votes
2
answers
3k
views
Is there a Break[] equivalent for short-circuiting in Table?
I am running Mathematica 7. The following is admittedly a silly example, but suppose that I have a list list whose entries are either ...
- 10.5k
5
votes
2
answers
678
views
Storing result from nested Table in a File for further computations
Consider the following:
Table[Table[x = 20; y = 30; 2 i x + 3 j y , {i, 10}], {j, 3}]
Suppose I want the result of this nested Table to be stored to an ...
- 33.3k
6
votes
5
answers
295
views
On reimplementing the Select function [duplicate]
I am working through the course Programming Paradigms via Mathematica. One of the exercises asks that you construct a function that mimics Select,even with three ...
- 687
3
votes
2
answers
2k
views
Need to create a function to generate all permutations of Range[$n$] [duplicate]
Basically I need a function that takes a list and gives all the possible permutations of it. The reason I can't use Permutations is that I have to apply another ...
- 259
2
votes
3
answers
239
views
Finding primes that have certain property
Let S[p] denote the sum of digits of p. A prime p is said to be stubborn if none of ...
- 21
3
votes
1
answer
272
views
Finding pairs where the intersection of them is empty set from a nested list
It would be better to give an example first.
Suppose I have a nested list of the form
list = {{ 1,2,3,6}, { 3,6,10,20}, { 4,7,11}, { 10,20}};
where each element ...
- 2,305
2
votes
2
answers
244
views
3
votes
2
answers
167
views
How to generate a list from an iterator and some arbitrary function
Suppose I'd like to generate a table of integers:
Table[i, {i, 10}]
Great; now suppose I want only the integers that are even
...
- 523
3
votes
1
answer
333
views
Writing this loop in Mathematica
OK, so I've never had to write a line of Mathematica code (except for using it interactively as a calculator), but for this it looks like I have to. If someone could provide me with the code for the ...
- 65