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Probability of substring of K 1 characters in binary string of length N?
Say you have a binary string of length N where each character is equally likely to appear. What is the probability that there will be a substring of K 1 characters?
For instance if K = 2, N = 3 the answer is 3/8 = 37.5%.
000: NO
001: NO
010: NO
011: YES
100: NO
101: NO
110: YES
111: YES
How to solve this problem. Can it be done in polynomial time?
