Anyone can Do it using Ascii codes. I dare you - “Try to not use ascii codes.” 
Does it mean to not to use if(ch[i] >= ‘A’ and ch[i] <=‘Z’)
?
or to not to use ascii numbers?
Please explain the dare
hello @goyalvivek
i guess he want you not to use ascii numbers.
btw i dont see any such constraints in the problem statement.
its written in the explanation section
…
u can use this …
ok, thank you for ur time
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