CodingBat makeKH

makeKH

Given an input string, return a string where the the first letter is replaced with K and the last letter is replaced with H. If the length of the string is less than 2, return the string KH.

makeKH("zehillar") → "KehillaH"
makeKH("ram") → "KaH"
makeKH("A") → "KH"

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Difficulty: 100

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