[Swift]LeetCode243.最短單詞距離 $ Shortest Word Distance

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Given a list of words and two words word1 and word2, return the shortest distance between these two words in the list.git

For example,
Assume that words = ["practice", "makes", "perfect", "coding", "makes"].github

Given word1 = 「coding」word2 = 「practice」, return 3.
Given word1 = "makes"word2 = "coding", return 1.微信

Note:
You may assume that word1 does not equal to word2, and word1 and word2 are both in the list.spa


給定單詞列表以及單詞1和單詞2,返回列表中這兩個單詞之間的最短距離。code

例如,htm

假設words=[「practice」、「makes」、「perfect」、「coding」、「makes」]。blog

給定word1=「coding」,word2=「practice」,返回3。get

給定word1=「makes」,word2=「coding」,返回1。博客

注:

您能夠假定word1不等於word2,word1和word2都在列表中。


 1 class Solution {
 2     func shortestDistance(_ words: [String],_ word1:String,_ word2:String) -> Int {
 3         var idx:Int = -1
 4         var res:Int = Int.max
 5         for i in 0..<words.count
 6         {
 7             if words[i] == word1 || words[i] == word2
 8             {
 9                 if idx != -1 && words[idx] != words[i]
10                 {
11                     res = min(res, i - idx)
12                 }
13                 idx = i
14             }
15         }
16         return res
17     }
18 }
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