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Return a count of the number of characters in the string that are followed immediately by the same character. For example, countMatches("abbacccdd") should return 4 because the first b is followed by a b, the first c is followed by a c, the second c is followed by a c, and the first d is followed by a d. countPairs("abbacccdd") → 4 countPairs("abab") → 0 countPairs("xxx") → 2 ...Save, Compile, Run (ctrl-enter) |
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Difficulty: 200
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