静态网页制作的企业_阿里云国际站官网_建网站的软件有哪些_百度推广代理怎么加盟

今日任务

279.完全平方数
139.单词拆分

279.完全平方数

题目链接： . - 力扣（LeetCode）

class Solution {public int numSquares(int n) {int[] dp = new int[n + 1];Arrays.fill(dp, Integer.MAX_VALUE);int item = (int)Math.sqrt(n);dp[0] = 0;for (int i = 1; i <= item; i++) {for (int j = 0; j <= n; j++) {if (j >= i * i && dp[j - i * i] != Integer.MAX_VALUE) {dp[j] = Math.min(dp[j], dp[j - i * i] + 1);}}}return dp[n];}
}

139.单词拆分

题目链接： . - 力扣（LeetCode）

class Solution {public boolean wordBreak(String s, List<String> wordDict) {HashSet<String> set = new HashSet<>(wordDict);boolean[] dp = new boolean[s.length() + 1];dp[0] = true;for (int i = 1; i <= s.length(); i++) {for (int j = 0; j <= i; j++) {if (set.contains(s.substring(j, i)) && dp[j] == true) {dp[i] = true;}}}for (int i = 0; i < dp.length; i++) {System.out.println("dp " + i + " is: " + dp[i]);}return  dp[s.length()];}
}