Trim the Trailing Zeros

Easy

A positive integer is written as a string num of decimal digits with no leading zeros. Remove all the zeros at the end of it and return the result, also as a string.

Example 1

num='40500' → '405'

The two zeros at the end are cut off; the zero in the middle stays.

Example 2

num='7' → '7'

There are no trailing zeros, so the string is unchanged.

Constraints

1 ≤ num.length ≤ 1000
num consists of digits only
num does not start with a zero

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String

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Input

num='40500'

Expected

'405'

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