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Subsequence Pattern Matching

Problem Statement

Given a string and a pattern, write a method to count the number of times the pattern appears in the string as a subsequence.

Example 1: Input: string: "baxmx", pattern: "ax"
Output: 2
Explanation: {baxmx, baxmx}.

Example 2:

Input: string: "tomorrow", pattern: "tor"
Output: 4
Explanation: Following are the four occurences: {tomorrow, tomorrow, tomorrow, tomorrow}.

Try it yourself

Try solving this question here:

java
class Solution {

  public int findSPMCount(String str, String pat) {
    //TODO: Write - Your - Code
    return -1;
  }
}
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