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abraskin@mbusd.org ch2_exam_strings > swap2
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Given a string, return another string where each pair of letters has been swapped. If there is an odd character, include it.


swap2("123456") → "214365"
swap2("1234567") → "2143657"
swap2("wT orwnosgd not'm ka e airhgt") → "Two wrongs don't make a right"

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String swap2(String s) { }

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