u012737193的博客

Giventwo non-negative integers num1 and num2 representedas strings, return the product of num1 and num2.Note:1.      The length of both num1 and num2 is< 110.2.      Both num1 and num2 conta

Givena string S, check if the letters can berearranged so that two characters that are adjacent to each other are not thesame.Ifpossible, output any possible result.  If not possible, return the e

Romannumerals are represented by seven different symbols: I, V, X, L, C, D and M.Symbol      ValueI             1V             5X             10L             50C             100D             500M     ...

Giventwo strings s and t which consist of only lowercase letters.String t isgenerated by random shuffling string s andthen add one more letter at a random position.Findthe letter that was added in t.E...