How to Solve Reverse Prefix of Word Problem
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Reverse Prefix of Word
Given a 0-indexed string word and a character ch, reverse the segment of word that starts at index 0 and ends at the index of the first occurrence of ch (inclusive). If the character ch does not exist...
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Understanding the Reverse Prefix of Word Problem
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Problem Statement
Given a 0-indexed string word and a character ch, reverse the segment of word that starts at index 0 and ends at the index of the first occurrence of ch (inclusive). If the character ch does not exist in word, do nothing. For example, if word = "abcdefd" and ch = "d", then you should reverse the segment that starts at 0 and ends at 3 (inclusive). The resulting string will be "dcbaefd". Return the resulting string.
Reverse Prefix of Word
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Examples
word = "abcdefd", ch = "d""dcbaefd"The first occurrence of "d" is at index 3. Reverse the part of word from 0 to 3 (inclusive), the resulting string is "dcbaefd".
word = "xyxzxe", ch = "z""zxyxxe"The first and only occurrence of "z" is at index 3. Reverse the part of word from 0 to 3 (inclusive), the resulting string is "zxyxxe".
word = "abcd", ch = "z""abcd""z" does not exist in word. You should not do any reverse operation, the resulting string is "abcd".
Constraints
1 <= word.length <= 250word consists of lowercase English letters.ch is a lowercase English letter.How Interview Coder Helps with Leetcode Problems
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