Understanding the Problem There are strings as s and t. The length of s and length of t are equal as len(s) == len(t). This problem requires deciding whether s and t are isomorphic, which means they have the same structure, or pattern. As an example,...
Understanding the Problem There are two strings given. One is pattern, and another one is a string with spaces. If the pattern is ”abba” and the string is ”dog cat cat dog”, the first index ”a” takes ”dog”, the second index ”b” takes ”cat”, the third...
Understanding the Problem The problem is direct and very simply understandable. Changing roman number to integer and returning the integer is the only task. But it is quite tricky when it comes to the combination of the numbers. # basic roman numbers...