Cody has several ways to list problems, but I have not yet found an easy way to list them by their numbers. Listing by date created is close, but if someone starts a problem one day and finishes it much later, the numbers will be out of order. Even when the numbers are in order, finding a particular number can take some scrolling. One can type a URL with the problem number, but waiting for the page to load and being redirected to the main problems page gets cumbersome.
Write a function that takes a number or vector of numbers as input and returns a cell array of the titles of the problems. If the problem does not exist, return an empty vector in place of the title.
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I just discovered Cody Problem 877, which is similar. Apologies to Richard Zapor.