YuriFLAG

摘要： Given a string, find the length of the longest substring without repeating characters. Examples: Given "abcabcbb", the answer is "abc", which the leng 阅读全文

摘要： You need to write a function, which will accept a String and return first non-repeated character, for example in the world "hello", except 'l' all are 阅读全文