Splitting the string in group of two or three words

Question

given a string, we have to split the string in all distinct two and three parts (permutation doesn't matter). for example for:

cat

answer is

ca t
ct a
c at
c a t

for

aaa

answer is

aa a
a a a

how to do that? can you please provide a code in the best possible time complexity?

Answer 1

So i wrote a code for your problem, I wrote this code especially for string containing 3 characters. This code is nothing just "System.out.println" written in different style, if this doesn't suit you please provide me more input i would like it to solve then.` public void checkString(String s) { String strArry[] = s.split("");

    if (strArry[0].equalsIgnoreCase(strArry[1])) {
        System.out.println(strArry[0] + strArry[1] + " " + strArry[2]);
        System.out.println(strArry[0] + " " + strArry[1] + " " + strArry[2]);

    } else {
        {
            System.out.println(strArry[0] + strArry[1] + " " + strArry[2]);
            System.out.println(strArry[0] + strArry[2] + " " + strArry[1]);
            System.out.println(strArry[0] + " " + strArry[1] + strArry[2]);
            System.out.println(strArry[0] + " " + strArry[1] + " " + strArry[2]);
        }
    }
}`