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 <= 1031 <= word1[i].length, word2[i].length <= 1031 <= sum(word1[i].length), sum(word2[i].length) <= 103word1[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。