如何将字符串拆开来？

Question

能否构造一个方法，将"abcdefghi"拆成一个数组{"a","b",...}或者{"ab","cd","ef",...}或者{"abc","def","ghi"}

方法能否运用于数字，将"123456789"拆成这样？

Answer 1

可以用subString方法