"""
function findCity(list of cities, target city)
    #To remember
    #low and high are the first and the last items that COULD still be what we are looking for

    set low to index of the first item in the list (ZERO)
    set high to index of the LAST item in the list ( length of the list - 1 )

    while low<=high
        set guess to the average of low and high

        if cities[guess]==target city
            return True
        if cities[guess]>target city
            set high to guess - 1
        if cities[guess]<target city
           set low to guess+1 
    return False

"""