algorithm - java indexof(String str) method complexity - Stack Overflow



algorithm - java indexof(String str) method complexity - Stack Overflow

The complexity of Java's implementation of indexOf is O(m*n) where n and m are the length of the search string and pattern respectively.

What you can do to improve complexity is to use e.g., the Boyer-More algorithm to intelligently skip comparing logical parts of the string which cannot match the pattern.


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