Question

How to find the lexographical smallest name in c programming

Answer 1

Answer:

# Given a string which contains only lowercase letters, remove duplicate

# letters so that every letter appear once and only once. You must make

# sure your result is the smallest in lexicographical order among all possible results.

#

# Example:

# Given "bcabc"

# Return "abc"

#

# Given "cbacdcbc"

# Return "acdb"

Explanation:

The smallest lexicographical order is an order relation where string s is smaller than t, given the first character of s (s1) is smaller than the first character of t (t1), or in case they are equivalent, the second character, etc.

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