What is Boyer Moore Algorithm?

The Boyer-Moore algorithm works by searching for information from left to right, and comparing it to a pattern from right to left. There are two main ways to judge comparisons:

1. Bad Character Rule: When a mismatch occurs, the algorithm adjusts the sample to match the last mismatch in the sample to the mismatch in the text This is done by ‘bad character’ conversion the calculation of the .
2. Good suffix rule: If there is a mismatch and the mismatch character in the pattern is nowhere else in the pattern from the left, the algorithm shifts the pattern to the right by referring to the pattern itself on the s. This is done by calculating a ‘good faith’ adjustment.

The proper application of this rule reduces the number of color comparisons necessary to determine the appearance of a pattern in a Boyer-Moore text.

Boyer-Moore algorithm is an efficient string search algorithm that is particularly useful for large-scale searches. Unlike some other string search algorithms, the Boyer-Moore does not require preprocessing, making it ideal where the sample is relatively large relative to the data being searched.