Leetcode Problem 1234. Replace the Substring for Balanced String

1234. Replace the Substring for Balanced String

Leetcode Solutions

Count the occurrences of each character in the string.
Calculate the target count for each character, which is n/4.
Initialize two pointers, left and right, to traverse the string.
Expand the window by moving right to include characters that exceed the target count.
Shrink the window by moving left when the count of characters outside the window is balanced.
Update the minimum length whenever a valid window is found.
Continue this process until the end of the string is reached.
Return the minimum length of the window found.

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