Ascii value concept

#1

i did not about ascii value concept yet it is nowhere explained in course till now .

#2

ASCII values are digital encoding for Alphabets, Numbers, Signs and Different symbols. They are the mapping for different character, numbers to a unique decimal number.
There is nothing so conceptual in it.
Just you need to know that
A-Z have ascii values from 65 to 90…means A has 65, B 66, C 67 and so on…
a-z have ascii values from 97 to 122
0-1 have ascii values from 48 to 57

#3

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#4

why we dont use ki ek baar output mai hoga ek bAAR NHI .similarly subsequence mai tha subsequence (in,out,i+1,j)so in tjis we only do th condition in which we accept values in output but where is he cndition in whhiuch we skip it

#5

i did not understand how the for loop is working