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README.md

Minimum Changes To Make Alternating Binary String

Runtime: 4 ms (Top 41.14%) | Memory: 7.40 MB (Top 44.57%)

Dec 19, 2023

7865d39 · Dec 19, 2023

Name	Name	Last commit message	Last commit date
parent directory ..
Minimum Changes To Make Alternating Binary String.cpp	Minimum Changes To Make Alternating Binary String.cpp	Runtime: 4 ms (Top 41.14%) \| Memory: 7.40 MB (Top 44.57%)	Dec 19, 2023
Minimum Changes To Make Alternating Binary String.java	Minimum Changes To Make Alternating Binary String.java	Runtime: 4 ms (Top 86.00%) \| Memory: 41.7 MB (Top 99.33%)	Sep 7, 2022
Minimum Changes To Make Alternating Binary String.js	Minimum Changes To Make Alternating Binary String.js	Updated Project format	Aug 17, 2022
Minimum Changes To Make Alternating Binary String.py	Minimum Changes To Make Alternating Binary String.py	Runtime: 52 ms (Top 66.2%) \| Memory: 16.53 MB (Top 16.1%)	Sep 6, 2023
README.md	README.md	Added problem description	Aug 21, 2022
info.json	info.json	Updated Project format	Aug 17, 2022

README.md

1758. Minimum Changes To Make Alternating Binary String

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.

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.

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

Example 1:

Input: s = "0100"
Output: 1
Explanation: If you change the last character to '1', s will be "0101", which is alternating.

Example 2:

Input: s = "10"
Output: 0
Explanation: s is already alternating.

Example 3:

Input: s = "1111"
Output: 2
Explanation: You need two operations to reach "0101" or "1010".

Constraints:

1 <= s.length <= 10⁴
s[i] is either '0' or '1'.

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