# ---
# title: 290. Word Pattern
# id: problem290
# author: Tian Jun
# date: 2020-10-31
# difficulty: Easy
# categories: Hash Table
# link: <https://leetcode.com/problems/word-pattern/description/>
# hidden: true
# ---
# 
# Given a `pattern` and a string `s`, find if `s` follows the same pattern.
# 
# Here **follow** means a full match, such that there is a bijection between a
# letter in `pattern` and a **non-empty** word in `s`.
# 
# 
# 
# **Example 1:**
# 
#     
#     
#     Input: pattern = "abba", s = "dog cat cat dog"
#     Output: true
#     
# 
# **Example 2:**
# 
#     
#     
#     Input: pattern = "abba", s = "dog cat cat fish"
#     Output: false
#     
# 
# **Example 3:**
# 
#     
#     
#     Input: pattern = "aaaa", s = "dog cat cat dog"
#     Output: false
#     
# 
# **Example 4:**
# 
#     
#     
#     Input: pattern = "abba", s = "dog dog dog dog"
#     Output: false
#     
# 
# 
# 
# **Constraints:**
# 
#   * `1 <= pattern.length <= 300`
#   * `pattern` contains only lower-case English letters.
#   * `1 <= s.length <= 3000`
#   * `s` contains only lower-case English letters and spaces `' '`.
#   * `s` **does not contain** any leading or trailing spaces.
#   * All the words in `s` are separated by a **single space**.
# 
# 
## @lc code=start
using LeetCode

## add your code here:
## @lc code=end
