1662. Check If Two String Arrays are Equivalent
Easy
Given two string arrays
word1
and word2
, return true
if the two arrays represent the same string, and false
otherwise.A string is represented by an array if the array elements concatenated in order forms the string.
Example 1:
Input: word1 = ["ab", "c"], word2 = ["a", "bc"]
Output:
true
Explanation:
word1 represents string "ab" + "c" -> "abc"
word2 represents string "a" + "bc" -> "abc"
The strings are the same, so return true.
Example 2:
Input: word1 = ["a", "cb"], word2 = ["ab", "c"]
Output:
false
Example 3:
Input: word1 = ["abc", "d", "defg"], word2 = ["abcddefg"]
Output:
true
Constraints:
1 <= word1.length, word2.length <= 103
1 <= word1[i].length, word2[i].length <= 103
1 <= sum(word1[i].length), sum(word2[i].length) <= 103
word1[i]
andword2[i]
consist of lowercase letters.
一開始的解法
func arrayStringsAreEqual(word1 []string, word2 []string) bool {
word_1 := ""
word_2 := ""
for _, val := range word1 {
word_1 += val
}
for _, val := range word2 {
word_2 += val
}
return word_1==word_2
}
如果把 word_1 和 word_2 改為 byte array 效率會更快、空間會更省。