CodingBat repeatMe

repeatMe

Given a String and and an integer n, return a string with the first letter appearing n times, the second repeating n-1 times, and so on, but make sure each character appears at least once. (Credit to Abby)

repeatMe("dog", 4) → "ddddooogg"
repeatMe("Tower", 3) → "TTToower"
repeatMe("Yay", 6) → "YYYYYYaaaaayyyy"

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Difficulty: 100

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