Class Solution
java.lang.Object
g1201_1300.s1239_maximum_length_of_a_concatenated_string_with_unique_characters.Solution
public class Solution
extends java.lang.Object
1239 - Maximum Length of a Concatenated String with Unique Characters.
Medium
You are given an array of strings arr
. A string s
is formed by the concatenation of a subsequence of arr
that has unique characters.
Return the maximum possible length of s
.
A subsequence is an array that can be derived from another array by deleting some or no elements without changing the order of the remaining elements.
Example 1:
Input: arr = [“un”,“iq”,“ue”]
Output: 4
Explanation: All the valid concatenations are:
- ""
- “un”
- “iq”
- “ue”
- “uniq” (“un” + “iq”)
- “ique” (“iq” + “ue”)
Maximum length is 4.
Example 2:
Input: arr = [“cha”,“r”,“act”,“ers”]
Output: 6
Explanation: Possible longest valid concatenations are “chaers” (“cha” + “ers”) and “acters” (“act” + “ers”).
Example 3:
Input: arr = [“abcdefghijklmnopqrstuvwxyz”]
Output: 26
Explanation: The only string in arr has all 26 characters.
Constraints:
1 <= arr.length <= 16
1 <= arr[i].length <= 26
arr[i]
contains only lowercase English letters.
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Constructor Summary
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Method Summary
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Constructor Details
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Solution
public Solution()
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Method Details
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maxLength
public int maxLength(java.util.List<java.lang.String> arr)
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