Write a C++ function implode that receives a vector of strings and a delimiter string. This function returns a single string that is the elements of the vector together with the delimiter string between each element. For example, suppose vector v contains elements {"Mary", "Bob", "Joe"}, then implode (v, ", ") will return string "Mary. Bob, Joe". Write a function filter.odd that receives a source vector of integer values and returns a vector containing the odd values from the source vector (in the same order as in the source vector). For example, if the source vector is {12, 19, 13, 16, 7}, the returned result vector would contain {19, 13, 7}. Note that the source must not be modified by this function