You are given a string source of size n, a string pattern that is a of source, and a sorted integer array targetIndices that contains distinct numbers in the range [0, n - 1].
We define an operation as removing a character at an index idx from source such that:
idx is an element of targetIndices.pattern remains a of source after removing the character.Performing an operation does not change the indices of the other characters in source. For example, if you remove 'c' from "acb", the character at index 2 would still be 'b'.
Return the maximum number of operations that can be performed.
Example 1:
Input: source = "abbaa", pattern = "aba", targetIndices = [0,1,2]
Output: 1
Explanation:
We can't remove source[0] but we can do either of these two operations:
source[1], so that source becomes "a_baa".source[2], so that source becomes "ab_aa".Example 2:
Input: source = "bcda", pattern = "d", targetIndices = [0,3]
Output: 2
Explanation:
We can remove source[0] and source[3] in two operations.
Example 3:
Input: source = "dda", pattern = "dda", targetIndices = [0,1,2]
Output: 0
Explanation:
We can't remove any character from source.
Example 4:
Input: source = "yeyeykyded", pattern = "yeyyd", targetIndices = [0,2,3,4]
Output: 2
Explanation:
We can remove source[2] and source[3] in two operations.
Constraints:
1 <= n == source.length <= 3 * 1031 <= pattern.length <= n1 <= targetIndices.length <= ntargetIndices is sorted in ascending order.targetIndices contains distinct elements in the range [0, n - 1].source and pattern consist only of lowercase English letters.pattern appears as a subsequence in source.