How to Solve Count Substrings That Can Be Rearranged to Contain a String II Problem
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Count Substrings That Can Be Rearranged to Contain a String II
You are given two strings word1 and word2. A string x is called valid if x can be rearranged to have word2 as a prefix. Return the total number of valid substrings of word1. Note that the memory limits in this problem are smaller than usual, so you must implement a solution with a linear runtime complexity.
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Understanding the Count Substrings That Can Be Rearranged to Contain a String II Problem
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Problem Statement
You are given two strings word1 and word2. A string x is called valid if x can be rearranged to have word2 as a prefix. Return the total number of valid substrings of word1. Note that the memory limits in this problem are smaller than usual, so you must implement a solution with a linear runtime complexity.
Count Substrings That Can Be Rearranged to Contain a String II
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Examples
# Example 1
word1 = "bcca", word2 = "abc"
1
# Example 2
word1 = "abcabc", word2 = "abc"
10
# Example 3
word1 = "abcabc", word2 = "aaabc"
0
Constraints
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Solve Count Substrings That Can Be Rearranged to Contain a String II — You are given two strings word1 and word2. A string x is called valid if x can b...
Here's the optimal approach using Hash Table:
Time: O(n) | Space: O(n)
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