Find All Occurrences of a Pattern in a String solved by 2846

In this problem, we ask a simple question: how many times can one string occur as a substring of another? Recall from “Find the Most Frequent Words in a String” that different occurrences of a substring can overlap with each other. For example, $\color{green}\textbf{ATA}$ occurs three times in $\text{CG}\color{green}\textbf{ATATA}\color{black}\text{TCC}\color{green}\textbf{ATA}\color{black}\text{G}$.

Pattern Matching Problem

Find all occurrences of a pattern in a string.

Given: Strings Pattern and Genome.

Return: All starting positions in Genome where Pattern appears as a substring. Use 0-based indexing.

Sample Dataset

ATAT
GATATATGCATATACTT

Sample Output

1 3 9

Extra Datasets

Click for debug datasets