Software Engineer

Two tables will be given, and you will be asked to create an inner join and fetch specific data.

Difference between DDL and DML commands

Print the following pattern

Pattern for N = 4

Hint

As taught in the video, you just have to modify the code so that instead of printing numbers, it should output stars ('*').

The dots represent spaces.

You are given a string S, which is formed by characters ‘A’, ‘B’ and ‘C’. You need to count the number of Power Subsequences of the given string S.

Note:

1. A subsequence of string S is a string which we get after removal of zero or more characters from S, and without changing the order of character in the remaining string.

2. A subsequence S’ of string S, is known as Power Subsequence if S’ can be represented in the form ‘A’^i + ‘B’^j + ‘C’^k where i, j and k are strictly greater than 0, ie. S’ can be written as a concatenation of I ‘A’s, followed by j ‘B’s, followed by k ‘C’s. 

3. Eg. “ABC” is a Power Subsequence with i=j=k=1, while “BAC” or “AB” or “BC” are not Power Subsequences.

4. Two subsequences are considered different if and only if the set of indexes of string S, chosen for two subsequences, are different.

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