Linked Questions
84 questions linked to/from Why should I avoid the For loop in Mathematica?
0
votes
1answer
592 views
Assigning value to an array in nested for loop [duplicate]
I want to write a code like
X={};
index=1;
max=3;
For[i=1,i<=2,i++,
For[j=1,j<=2,j++,
X[[index]]=i*j;
index++
]
]
But I am not getting ...
0
votes
1answer
46 views
An elementary question about For loop [duplicate]
Assume we have this For loop:
For[i=1,i<10,i++, i^2].
How can we put the squared values ...
482
votes
37answers
110k views
What are the most common pitfalls awaiting new users?
As you may already know, Mathematica is a wonderful piece of software.
However, it has a few characteristics that tend to confuse new (and sometimes not-so-new) users. That can be clearly seen from ...
191
votes
3answers
43k views
Alternatives to procedural loops and iterating over lists in Mathematica
While there are some cases where a For loop might be reasonable, it's a general mantra – one I subscribe to myself – that "if you are using a ...
40
votes
8answers
3k views
Can this be written well, without loops?
Inspired by this question I would like to know if the following code can be written without explicit loops (For, While, etc.) in a clean, efficient and non-contrived way. I have been unable to do so.
...
59
votes
5answers
6k views
Are there any cases when For[] loops are reasonable?
To my mind the only reason for the existence of For[] loops in Mathematica is to allow new users with some experience in procedural programming languages to write ...
7
votes
8answers
547 views
Finding C[i]'s expression in DSolve solution
An example, the command
DSolve[y''[x] - 4 y[x] == 1, y[x], x]
gives solution
...
10
votes
2answers
683 views
Optimizing Mathematica Code
I have implemented the whole Baum-Welch Algorithm for training Hidden Markov Models as described in Rabiner's paper Here is my code that calculates the Forward Probabilities`
...
5
votes
3answers
1k views
How to speed up a process
I am wondering how to speed up the following code: Currently it takes more than two sec to be processed.
...
6
votes
1answer
534 views
An efficient way to translate a triple for-loop from Matlab to Mathematica
This is my first post on StackExchange, so if I violate any etiquettes, I apologize in advance. I am a senior engineering student who has been using Mathematica for a year now. For one of my classes, ...
3
votes
2answers
2k views
For Loop and Sum
I am requested to do a sum of the first fifty positive even numbers by using For loop.
The For loop that I created is
...
5
votes
7answers
341 views
Computing only Prime Powers with NestList
Is there a simple way to compute only prime powers of a function f with NestList? That is, I want to compute:
{f[x_0], f^2[x_0]=f[f[x_0]], f^3[x_0], f^5[x_0]...}
...
5
votes
2answers
684 views
Runge-Kutta implemented on Mathematica
I am trying to solve differential equations numerically, so I am trying to write a 4th -order Runge-Kutta program for Mathematica (I know NDSolve does this, but I ...
13
votes
1answer
694 views
Pascal records and Mathematica programming
Background:
"experienced" Pascal-programmer (DOS-era, never got into OOP)
proud owner of Mathematica ver 11.2
have used Mathematica for years to do my share of number crunching and plotting to ...
7
votes
2answers
533 views
