第二个方法,是Code Granker上面的,利用了高中学排列组合时候的概念。 有个‘abc’,那么总共可以看成'a_b_c' 5个字符位置 ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible resultsSome results have been hidden because they may be inaccessible to you
Show inaccessible results