Package g1001_1100.s1079_letter_tile_possibilities

Class Solution

java.lang.Object
g1001_1100.s1079_letter_tile_possibilities.Solution
public class Solution extends java.lang.Object
1079 - Letter Tile Possibilities.

Medium

You have n tiles, where each tile has one letter tiles[i] printed on it.

Return the number of possible non-empty sequences of letters you can make using the letters printed on those tiles.

Example 1:

Input: tiles = “AAB”

Output: 8

Explanation: The possible sequences are “A”, “B”, “AA”, “AB”, “BA”, “AAB”, “ABA”, “BAA”.

Example 2:

Input: tiles = “AAABBC”

Output: 188

Example 3:

Input: tiles = “V”

Output: 1

Constraints:

  • 1 <= tiles.length <= 7
  • tiles consists of uppercase English letters.

  • Constructor Summary

    Constructors
    Constructor
    Description
    Solution()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    numTilePossibilities(java.lang.String tiles)
     

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • Solution

      public Solution()

  • Method Details

    • numTilePossibilities

      public int numTilePossibilities(java.lang.String tiles)