Finding lenght on elements

I have a vector of colors, its elements are "red", "blue", "black" ...
how can I find which element has the longest name ?

I been playing with this for fwe hours and still can't figure this out.

How about this to start off with?

Code:

---

T max = a[0];

for ( i = 1; i < n; i++ ) {
  if ( a[i] > max )
    max = a[i];
}

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