用excel处理数据的时候,无论是使用VBA还是函数,查找和引用都是两大主要的工作,VBA中的find系列的方法(find.findnext.Range.FindPrevious)返回range对象,可以同时实现查找和引用,因此非常有用,下面列举一些常见的find的用法: Sub Find1() '在某列查找 Dim k k = Range("A:A").Find("A").Row MsgBox k End Sub =========================
题目连接 题意:在大小为1e5以内的数组求存在多少个区间和的值等于k的次方 这种题很经常见,总是想着用两个for循环解决,但是一定会超时. 题解:算出前缀和,使用map去查找mp[sum[i+1]-tmp]的个数,加起来就是答案,这样复杂度在O(n)加上mp的查找时间,基本上不会超时 #include<bits/stdc++.h> using namespace std; typedef long long ll; typedef long double db; typedef pair<
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Given a binary tree and a sum, determine if the tree has a root-to-leaf path such that adding up all the values along the path equals the given sum. For example:Given the below binary tree and sum = 22, 5 / \ 4 8 / / \ 11 13 4 / \ \ 7 2 1 return tr
Function pda(x) a = x If Len(a) = 1 Then ab = "00" & a ElseIf Len(a) = 2 Then ab = "0" & a ElseIf Len(a) = 3 Then ab = a End If pda = ab End Function Sub pd() n = Worksheets.Count Rem ¼ÆË㵱ǰËùÓй¤×÷±íÊýÁ¿ Rem xxΪÿ¸ö¿¼³¡µÄÈË
之前对查找算法做的一些简单总结与实现: 查找算法时间复杂度: 1.二分查找的实现(待补充) public class Test { //循环实现二分查找 public static int binary(int[] array,int value){ int low=0; int high=array.length-1; while(low<=high){ int middle=(low+high)/2; if(array[middle]==value){ return middle; } if