Write a function named validate that takes code represented as a string as its only parameter.

python function!: a function called popular_color with one parameter, of type dict[str, str] of names and favorite colors. The return type is a str and it is the most commonly occuring color. If two colors are tied for popularity, the first color shown will be picked.

Ex. 8.4) The following functions are all intended to check whether a string contains any lowercase letters, but at least some of them are wrong. For each function, describe what the function actually does (assuming that the parameter is a string).

Consider the following line of code: X = new int*[n]; What should the type of x be? O int O int* O int** O int& O None of the above

C++ Write a function named “createPurchaseOrder” that accepts the quantity(integer), the cost per item (double), and the description (string). It will return anewly created PurchaseOrder object holding that information if they are valid:quantity and cost per item cannot be negative and the description cannot be empty or blank(s). When it is invalid, it will return NULL to indicate that it cannot create such PurchaseOrder object. PurchaseOrder createPurchaseOrder(int quantity, double costPerItem, string description) {     if(quantity < 0 || costPerItem < 0.0 || description == "")         return NULL;     else     {         PurchaseOrder p = new PurchaseOrder(quantity,costPerItem,description);         return p;     } } what's the issue with this function and how to rewrite it

please code in pythonis_phone_num: This Boolean function takes a string and returns True if it is in the formatddd-ddd-dddd, where d is a digit, False otherwise. Example calls:is_phone_num('123-456-7890') --> Trueis_phone_num('123-4556-7890') --> Falseis_phone_num('(123)456-7890') --> False

In C++ Language  Write a function named kinetic that computes the kinetic energy for an object using the following formula:           E = 12mv2E = 12mv2        where: m is the mass of the object                 v is the velocity of the object                 E is the kinetic energy. The mass, m, and the velocity, v, are passed to the function as parameters.  The value of energy, E, is computed and returned.

5. use c code to Write a stringSearch function that gets two strings one called needle and the other called haystack. It then searches in the Haystack for the needle. If it finds it, it returns the index of where the needle starts in the haystack. If the needle cannot be found, it should return -1 Prototype: int stringSearch(char needle[], char haystack) Example1: Haystack: “This is just an example” Needle: “just” Result: 8 Example2: Haystack: “This is just an example” Needle: “This” Result: 0 Example3: Haystack: “This is just an example” Needle: “this” Result: -1 Hint: all the answer need to include an output and use c code to answer

4. Complete the function show_upper. This function takes one parameter - a string (s). It should return a string made up of all the upper-case characters in s. For example, if s is “aBdDEfgHijK” then show_upper should return “BDEHK”. It should return the upper-case string - not print it. Do not change anything outside show_upper.

7. username_ends_with_digits This function decides whether a given username ends with some digits. It returns either True, if the username does end with digits, or False, if it does not. Check out the .isdigit method on strings! Sample runs should look like: >>> username_ends_with_digits("FunctionEnjoyer") False >>> username_ends_with_digits("this_username_95060") True