code javascript: Find the next integer with no two identical consecutive digits.

Task description

You are given a positive integer N$.$ Your task is to find the smallest integer greater than N that does not contain two identical consecutive digits.

For example, given N $=1765,$ the smallest integer greater than N is $1766.$ However, in $1766$ the last two digits are identical. The next integer, $1767,$ does not contain two identical consecutive digits, and is the smallest integer greater than $1765$ that fulfils the condition. Note that the second and fourth digits in $1767$ can both be $7$ as they are not consecutive.

Write a function:

function solution$($N$)$;

that, given an integer N$,$ returns the smallest integer gre

ater than N that does not contain two identical consecutive digits.

Examples:

$1.$ Given N $=55,$ the function should return $56.$ It is the smallest integer greater than $55$ and it does not contain two consecutive digits that are the same.

$2.$ Given N $=1765,$ the function should return $1767,$ as explained above.

$3.$ Given N $=98,$ the answer should be $101.$ Both $99$ and $100$ contain two identical consecutive digits, but $101$ does not.

$4.$ Given N $=44432,$ the answer should be $45010.$

$5.$ Given N $=3298,$ the answer should be $3401.$

Write an efficient algorithm for the following assumptions:

$$ N is an integer within the range $[1.\mathrm{.}1,000,000,000].$