Adjacent Repeat of Numbers in an Array

Write a function called DoubleLetterCheck$()$ that uses loops to determine if any two adjacent characters in a string array are the same.

The input argument is a character array called inString.

The output argument is an integer scalar called DoubleLetters. This value is set to an integer value of $1$ if two character next to one

another are the same in the array. Otherwise, this value is set to $0.$

Ex: Given

inString $=$ 'chocolate chip cookie';

DoubleLetters $=$ DoubleLetterCheck$($inString$)$

The output is:

DoubleLetters $=1$

because of the two $\text{'}$o$\text{'}$ characters in 'cookie'.

Ex: Given

inString $=$ 'chocolate fudge ice$-$cream';

DoubleLetters $=$ DoubleLetterCheck$($inString$)$

The output is:

DoubleLetters $=0$

No adjacent characters are the same.

Remember that MATLAB functions such as numel can be used to get the number of elements in a $1$D array. One possible strategy is to

iterate from position $2$ to the number of elements, and during each iteration, check each preceding element to see if a match exists.

Function $o.$

Code to call your function $?$

$1$ inString $=$ 'chocolate chip cookie';

DoubleLetters $=$ DoubleLetterCheck$($inString$)$