String Challenge

#1

Please explain the logic of the convertToInt function step by step

#2

hello @shreyasdaga

if 123 is the number then we can write this as 1 * 10^2 + 2 * 10 +3 right?
string to int function is doing the same thing.
if string is “123”
then first it is adding 3 to answer .[ (‘3’-‘0’) * 1 = 3]
and then it is adding 20 to the answer [ (‘2’-‘0’ )*10 = 20 ]
and then 100 [ (‘1’-‘0’)*100 = 100 ]
and the end result is 123.

#3

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