MATLAB: How to find the two nearest values related to a constant

closestMATLABnearestvector

Hello to all,
I've to find what are the two values and related indices respect to a constant.
I mean as example; I've a vector and a constant like follow:
a=[1250 2320 3520 4650 5550 6760];
b= 3700;
Therefore I would receive the values 3520 and 4650 and the equivalent indices 3 e 4.
Best regards and thanks in advance.

Best Answer

a=[1250 2320 3520 4650 5550 6760];
b= 3700;
 % this will work even if 'a' is  in random order
  d=sort(abs(b-a));   
  lowest=find(abs(b-a)==d(1))
  sec_lowest=find(abs(b-a)==d(2))
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