LeetCode [166] Fraction to Recurring Decimal

Given two integers representing the numerator and denominator of a fraction, return the fraction in string format.

If the fractional part is repeating, enclose the repeating part in parentheses.

For example,

• Given numerator = 1, denominator = 2, return "0.5".
• Given numerator = 2, denominator = 1, return "2".
• Given numerator = 2, denominator = 3, return "0.(6)".

Credits:
Special thanks to @Shangrila for adding this problem and creating all test cases.

Hide Tags

 Hash Table Math

======================

Ref
[1] https://oj.leetcode.com/problems/fraction-to-recurring-decimal/
OJ
[2] https://oj.leetcode.com/discuss/18731/accepted-cpp-solution-with-explainations
method1