2018年9月28日
451. Sort Characters By Frequency
摘要： 1 //用list比较快 2 class Solution { 3 public String frequencySort(String s) { 4 if(s.length() == 0 || s.length() == 1) return s; 5 HashMap map = new HashMap(); 6 cha... 阅读全文
posted @ 2018-09-28 06:08 jasoncool1 阅读(138) 评论(0) 推荐(0)
463. Island Perimeter
摘要： 1 class Solution { 2 public int islandPerimeter(int[][] grid) { 3 if(grid == null) return 0; 4 int row = grid.length; 5 if(row == 0) return 0; 6 int col = gr... 阅读全文
posted @ 2018-09-28 02:34 jasoncool1 阅读(122) 评论(0) 推荐(0)