I'm trying to improve my programming skills and currently I'm trying to understand how recursion works. The examples I have been seeing are giving me headache.
I went online and I saw resources but I couldn't get them for free.

* Introduction to Recursive Programming , M. Rubio-
Sánchez (Taylor & Francis, 2017) [In Python]
* Practicing Recursion in Java , I. Pevac (CreateSpace
Independent Publishing Platform, 2016)
* Thinking Recursively with Java , E. S. Roberts (Wiley,
2006) [Also an earlier edition in Pascal]
* Recursion via Pascal , J. S. Rohl (Cambridge University
Press, 1984)

I'll be grateful if any one can help me with any of those materials or any similar material.
Thanks in advance

the one most responsive to change.

Thinking Recursively with Java can be found at https:// / EdwinDigitalLibrary

Leopantro:
Thinking Recursively with Java can be found at
https:// / EdwinDigitalLibrary

Thank you brother, but I couldn't download it. Is there any other way you can help?

try watching video explanations of youtube first before reading a book on it,


recursion is basically calling a function over and over again with a value returned from the previous call, until the base condition returns false

eg.
say i have a plate of rice(say 20 spoons) and a spoon in my hand

a recursive function to check when the plate is empty(number of spoon left == 0);
will look like this

if number of spoons remaining on plate is greater than 0;
eat a spoon full;
decrease the quantity of food (i.e number of spoons left);
return the number of spoons left;
which is then passed as parameter to a new call of the same function again

the function keeps calling a new version of itself with the number of spoons left(returned from the previous call) as a parameter
until there is no more food in the plate which then returns 0;

the base condition "if number of spoons remaining is greater than 0;"
then fails when a parameter of 0 is passed and the recursion stops.

it is a lot more complex than that, but this is the best basic explanation i could come up with, at the time of writing this