344. Reverse String
Write a function that takes a string as input and returns the string reversed.
Example:Given s = "hello", return "olleh".
clas ......
There is a box protected by a password. The password is n digits, where each letter can be one of the first k digits 0, 1, ..., k-1.
You can keep inpu ......
E. Test
time limit per test2 seconds
memory limit per test256 megabytes
inputstandard input
outputstandard output
Sometimes it is hard to prepare test ......