摘要:
class Solution { private List ls; private int n; private LinkedList path; public List subsetsWithDup(int[] nums) { ls = new LinkedList (); path = new 阅读全文
摘要:
递归 class Solution { private List ls; private boolean []bool; private int n; public List subsets(int[] nums) { n = nums.length; ls = new LinkedList(); 阅读全文
摘要:
插值算法 处理数据极少的情况,通过插值算法来模拟产生一些新的但又比较靠谱的值来满足条件 分段插值 插值多项式 三角插值 插值法原理 plot 函数的用法: 阅读全文
摘要:
![](https://img2018.cnblogs.com/blog/1648545/201908/1648545-20190820133550003-614844358.png) ``` class Solution { private int n; private List ls; private boolean[] bool; private LinkedList path; publi 阅读全文
摘要:
class Solution { private LinkedList ans = new LinkedList(); private int n; private LinkedList path = new LinkedList(); private boolean[] bool; public 阅读全文
摘要:
Pearson 相关系数 线性趋势 通过折线图 看趋势 正态分布检验 典型相关分析 研究两组变量(每组变量中都可能有多个指标)之间相关关系的一种多元统计方法,他能够揭示出两组变量之间的内在联系 典型相关分析 需要假设数据服从正态分布 例子 选代表:较综合,全面的衡量所在组的内在规律 ++++ 将该组 阅读全文
摘要:
class Solution { int n; int m; int dx[] = new int[] { 1, 0, 1, 0 }; int dy[] = new int[] { 0, 1, 0, 1 }; public boolean exist(char[][] board, String w 阅读全文
摘要:
递归 class Solution { List ls; String[] arr = { "", "", "abc", "def", "ghi", "jkl", "mno", "pqrs", "tuv", "wxyz" }; public List letterCombinations(Strin 阅读全文