Flipkart Interview Question for Senior Software Development Engineers

Country: India
Interview Type: In-Person

Comment hidden because of low score. Click to expand.
of 4 vote

Was the interviewer completely bonkers?

This is the Rabbit sequence, with a twist, a difficult mathematical problem (for closed form) to solve in an interview for software developers.

- Anonymous February 04, 2014 | Flag Reply
Comment hidden because of low score. Click to expand.
of 1 vote

For N>1 A(N) is a prefix of A(N+1) and the remaining part is an element of { A(i) with i >0 }.
The proposed solution consists in removing the prefix, recursively.

static char get(int N, int i) {
        if (N == 1) return "()".charAt(i);
        else return "(())()".charAt(cut(4, 6, i));

    static int cut(int a, int b, int i) {
        int n = a + b;
        if (i >= n) i = cut(b, n, i);
        return i >= b ? i - b : i;

Tested against the brute force solution.

- piwi February 08, 2014 | Flag Reply

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