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g1201_1300.s1208_get_equal_substrings_within_budget.readme.md Maven / Gradle / Ivy

1208\. Get Equal Substrings Within Budget

Medium

You are given two strings `s` and `t` of the same length and an integer `maxCost`.

You want to change `s` to `t`. Changing the ith character of `s` to ith character of `t` costs `|s[i] - t[i]|` (i.e., the absolute difference between the ASCII values of the characters).

Return _the maximum length of a substring of_ `s` _that can be changed to be the same as the corresponding substring of_ `t` _with a cost less than or equal to_ `maxCost`. If there is no substring from `s` that can be changed to its corresponding substring from `t`, return `0`.

**Example 1:**

**Input:** s = "abcd", t = "bcdf", maxCost = 3

**Output:** 3

**Explanation:** "abc" of s can change to "bcd". That costs 3, so the maximum length is 3.

**Example 2:**

**Input:** s = "abcd", t = "cdef", maxCost = 3

**Output:** 1

**Explanation:** Each character in s costs 2 to change to character in t, so the maximum length is 1.

**Example 3:**

**Input:** s = "abcd", t = "acde", maxCost = 0

**Output:** 1

**Explanation:** You cannot make any change, so the maximum length is 1.

**Constraints:**

*   1 <= s.length <= 105
*   `t.length == s.length`
*   0 <= maxCost <= 106
*   `s` and `t` consist of only lowercase English letters.