摘要:
class Solution { public String convertToTitle(int n) { if(n <= 0) return ""; StringBuilder sb = new StringBuilder(); while(n > 0) { n--; sb.append((ch 阅读全文
摘要:
方法一:枚举前后缀,使用HashMap class Solution { public List<List<Integer>> palindromePairs(String[] words) { List<List<Integer>> res = new ArrayList<>(); int n = 阅读全文