I don't understand, can you explain the second rule?
all combinations of x & y of length n
1. they must appear n/2 times each
2. no initial segment of the string has more y's than x's
so, 'yyxyxx' -- the 2nd rule is broken here. since 1st appearance of x contains only one x while y [the second element] contains 2.
count (1stelement) >= count (2nd element) >= count (3rd element) ..
Hope this makes it clear
@Asif, thank you! I see.
Remove all the consonants
Return unique values without sorting
Whether the input is vector?
Construct an index vector from two input vectors in vectorized fashion
Change the sign of even index entries of the reversed vector
The Dark Knight
Yoonir - 03
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