oxd | Client software to secure apps | OAuth library

• Write a function traverse() that takes in a list tb of n strings each containing n lower case characters (a-z).
• tb represents a square table with n rows and n columns. The function returns a string st generated by the procedure below that traverses the grid starting from the top left cell and ending at the bottom right cell.
• At every step, the procedure moves either horizontally to the right or vertically down, depending on which of the two cells has a \smaller" letter (i.e., a letter that appears earlier in the alphabetical order).
• The letter in the visited cell is then added to st. In case of ties, either direction can be taken.
• When the right or bottom edges of the table are reached, there is obviously only a unique next cell to move to. As an example, traverse(["veus", "oxde", "oxlx", "hwuj"]) returns "veudexj"

so the table would look like this: