Make Algorithm to Generating a random number from a distribution described by a finite sequence of weights. in: sequence of n weights W describing the distribution (Wi ∈ N for i = 0, . . . , (n − 1) ∧ 1 ≤ n−1 i=0 Wi) out: randomly selected index r according to W (0 ≤ r ≤ m − 1

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Longest Common Subsequence

The Longest Common Subsequence (LCS) is defined as the longest subsequence that is shared by all of the given sequences, assuming that the subsequence's elements do not have to be in consecutive locations in the original sequences. It is used in the areas like bioinformatic, revision control systems like SVN and Git.