\(\frac{3}{10}\) means three tenths, and is written as \(0.3\). \(\frac{17}{100}\) means seventeen hundredths, and is written as \(0.17\). Similarly, \(0.2\) becomes ...

Based on the author's thesis, Temple University, with title: History of modern numeration systems. https://siris-libraries.si.edu/ipac20/ipac.jsp?&profile=liball ...

Write a function that takes in a string and returns the first non-repeated character in it. Example: for input string as aabbcdd the output should be c.

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