R Programming - for Loop

R Programming - for Loop
Lecture By: Mr. Ashish Sharma, Tutorials Point India Private Limited.

[TutorialsPoint_]

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[palabi]

If I type
x <-LETTERS[1:10]
print (x)

Then also I get the same result.
Few more example of For would be helpful.
And also a video of default libraries like LETTERS and many others is also needed.

[professorabdullah]

I want to partition a set [1, 2, 3, 4, .., 19] into three sets [1, 2, 3, 4, 5], [6, 7, 8, 9, 10], [11, 12, 13, 14, 15] and [16, 17, 18, 19]. how can i do it by using for loop?

[shuvshaw]

Output is "A"
:
:
:
.
.
"J"
How "" this comma arrived?