{ "data": { "question": { "questionId": "1884", "questionFrontendId": "1758", "boundTopicId": null, "title": "Minimum Changes To Make Alternating Binary String", "titleSlug": "minimum-changes-to-make-alternating-binary-string", "content": "

You are given a string s consisting only of the characters '0' and '1'. In one operation, you can change any '0' to '1' or vice versa.

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The string is called alternating if no two adjacent characters are equal. For example, the string "010" is alternating, while the string "0100" is not.

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Return the minimum number of operations needed to make s alternating.

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Example 1:

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\nInput: s = "0100"\nOutput: 1\nExplanation: If you change the last character to '1', s will be "0101", which is alternating.\n
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Example 2:

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\nInput: s = "10"\nOutput: 0\nExplanation: s is already alternating.\n
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Example 3:

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\nInput: s = "1111"\nOutput: 2\nExplanation: You need two operations to reach "0101" or "1010".\n
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Constraints:

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