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public String theEnd(String str, boolean front) {

if(front){

return str.substring(0,1);

}

return str.substring(str.length() - 1);

}

/*

Given a string, return a string length 1 from its front, unless front is false, in which case return a string length 1 from its back. The string will be non-empty.

theEnd("Hello", true) → "H"

theEnd("Hello", false) → "o"

theEnd("oh", true) → "o"

*/