[LeetCode] C++: Simple Question-String 1662. Check whether two string arrays are equal

1662. Check if two string arrays are equal

Easy difficulty 6

Gives you the word1 sum of  two string arrays  word2 . If the strings represented by the two arrays are the same, return ; otherwise, return   . true false

The string  represented by the array is  a string formed by concatenating all the elements in the array in  order .

 

Example 1:

输入：word1 = ["ab", "c"], word2 = ["a", "bc"]
输出：true
解释：
word1 表示的字符串为 "ab" + "c" -> "abc"
word2 表示的字符串为 "a" + "bc" -> "abc"
两个字符串相同，返回 true

Example 2:

输入：word1 = ["a", "cb"], word2 = ["ab", "c"]
输出：false

Example 3:

输入：word1  = ["abc", "d", "defg"], word2 = ["abcddefg"]
输出：true

 

prompt:

• 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] And  word2[i] consists of lowercase letters

 

class Solution {
public:
    bool arrayStringsAreEqual(vector<string>& word1, vector<string>& word2) {
        string str1, str2;
        for(auto str: word1){
            str1 += str;
        }
        for(auto str: word2){
            str2 += str;
        }
        return str1 == str2;
    }
};