LeetCode: Reverse Prefix of Word Solution
Substring manipulatingApproach
If there is no index of
ch
in word
, skipEverything else is straight forward
Implementation
1var reversePrefix = function (word, ch) {2 const indexOfCh = word.indexOf(ch)3 return indexOfCh === -14 ? word5 : word6 .substring(0, indexOfCh + 1)7 .split("")8 .reverse()9 .join("") + word.substring(indexOfCh + 1)10}
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Tags
leetcode
string
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