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Lexicographic rank of a string | GeeksforGeeks
Given a string, find its rank among all its permutations sorted lexicographically. For example, rank of “abc” is 1, rank of “acb” is 2, and rank of “cba” is 6.
For simplicity, let us assume that the string does not contain any duplicated characters.
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Given a string, find its rank among all its permutations sorted lexicographically. For example, rank of “abc” is 1, rank of “acb” is 2, and rank of “cba” is 6.
For simplicity, let us assume that the string does not contain any duplicated characters.
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http://ift.tt/1upvAZE
from Public RSS-Feed of Jeffery yuan. Created with the PIXELMECHANICS 'GPlusRSS-Webtool' at http://gplusrss.com http://ift.tt/UzQnck
via LifeLong Community
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