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| Given two strings, append them together (known as "concatenation") and return the result. However, if the concatenation creates a double-char, then omit one of the chars, so "abc" and "cat" yields "abcat". conCat("abc", "cat") → "abcat" conCat("dog", "cat") → "dogcat" conCat("abc", "") → "abc" ...Save, Compile, Run (ctrl-enter) | 
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Difficulty: 169.0
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