Let σ be an alphabet set of size k, and a = a1 · · · am and b = b1 · · · bn be two strings over σ with length m and n, respectively. design a dynamic programming based algorithm to convert a into b with minimum cost using the following rules. for a cost of dk/3e, one can delete any letter from a string. for a cost of dk/2e, one can insert a letter in any position. for a cost of |rank(a)−rank(b)|, one can replace a letter a by another letter b, where rank(a) and rank(b) are the ranks of a and b in σ (i. e., the ranks of 3 and 5 are 2 and 3, respectively, in an alphabet of {1, 3, 5, 7}).

Develop a function to create a document in the mongodb database “city” in the collection “inspections.” be sure it can handle error conditions gracefully. a. input -> argument to function will be set of key/value pairs in the data type acceptable to the mongodb driver insert api call b. return -> true if successful insert else false (require a screenshot)

Q13 what function does a security certificate perform? a. creates user accounts b. scrambles data c. identifies users d. creates password policies e. provides file access

When early motion pictures played in movie theaters, they were often accompanied by live organ or piano music. which of the following are the most likely reasons that this happened? (select all that apply). the music was provided to distract audience members from the loud sounds made when filmstrips were changed. the music accompanied the movies because the movies were silent and audiences were used to hearing music during plays in theaters. the music usually was played before, and sometimes after the movie, as an alternative form of entertainment. the music viewers to interpret the dramatic action in the films.