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srp4379@lausd.net > conCat1
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public String conCat1(String s1, String s2)

Given TWO Strings, return their concatenation. 

  String s = s1 + s2;
  return s;

conCat1("a", "b") → "ab"
conCat1("123", "456") → "123456"
conCat1("Downtown ", "Magnets") → "Downtown Magnets"

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public String conCat1(String s1, String s2) { }

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