| 20 | // 著作权归领扣网络所有。商业转载请联系官方授权，非商业转载请注明出处。 |
| 21 | |
| 22 | pub fn merge_alternately(word1: String, word2: String) -> String { |
| 23 | let mut res: Vec<char> = vec!(); |
| 24 | let max_len; |
| 25 | if word1.len() > word2.len() { |
| 26 | max_len = word1.len(); |
| 27 | } else { |
| 28 | max_len = word2.len(); |
| 29 | } |
| 30 | |
| 31 | for i in 0..max_len { |
| 32 | if i < word1.len() { |
| 33 | res.push(word1.chars().nth(i).unwrap()); |
| 34 | } |
| 35 | if i < word2.len() { |
| 36 | res.push(word2.chars().nth(i).unwrap()); |
| 37 | } |
| 38 | } |
| 39 | res.into_iter().collect() |
| 40 | } |
| 41 | |
| 42 | fn main() { |
| 43 | println!("{:?}", merge_alternately("abcd".to_string(), "m".to_string())); |