61. Rabin-Karp

Hard

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Example 1:

Input: text = "ABABDABACDABABCABAB", pattern = "ABABCABAB"

Output: [10]

Explanation: The pattern 'ABABCABAB' is found at index 10 of the text.

Example 2:

Input: text = "GEEKSFORGEEKS", pattern = "GEEK"

Output: [0, 8]

Explanation: The pattern 'GEEK' is found at indices 0 and 8 of the text.

Example 3:

Input: text = "TEST", pattern = ""

Output: [0, 1, 2, 3]

Explanation: Since the pattern is empty, it's considered to be found at every index of the text.

Example 4:

Input: text = "", pattern = "TEST"

Output: []

Explanation: Since the text is empty, the pattern cannot be found.

Example 5:

Input: text = "AAAA", pattern = "AAA"

Output: [0, 1]

Explanation: The pattern 'AAA' is found at indices 0 and 1 of the text.

Constraints:

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Time Complexity

O(n+m)

Space Complexity

O(1)