How to convert a string to integer (expect to write a method for it) ? without using parseInt valueat stringtokenizer split (that what I suggested to use but they were all prohibited)

Question

Steve N · Accepted Answer

(a) write a method to convert a string digit to an int (lots of ways to do this)
(b) int result = 0
(c) iterate through the string backwards, with the indexes starting from 0 -
result += convert(current character) * 10^index

ie
"569" - 9 x 10^0 + 6 x 10^1 + 5 x 10^2 = 9 + 60 + 500 = 569

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