binary

How to pivot pandas DataFrame column to create binary “value table”?

由 狂风中的少年 提交于 2021-02-19 03:37:46
问题 I have the following pandas dataframe: import pandas as pd df = pd.read_csv("filename.csv") df A B C D E 0 a 0.469112 -0.282863 -1.509059 cat 1 c -1.135632 1.212112 -0.173215 dog 2 e 0.119209 -1.044236 -0.861849 dog 3 f -2.104569 -0.494929 1.071804 bird 4 g -2.224569 -0.724929 2.234213 elephant ... I would like to create more columns based on the identity of categorical values in column E such that the dataframe looks like this: df A B C D cat dog bird elephant .... 0 a 0.469112 -0.282863 -1

inserting in binary tree doesn't work using java

由 风格不统一 提交于 2021-02-17 03:05:21
问题 I'm currently learning about trees using java and i have some errors going on here in the insertion of items in a binary tree I don't why it doesn't work this is the code: tree node: public class TNode { int data; TNode left; TNode right; public TNode(int data) { this.data = data; left = null; right = null; } } tree class: public class Tree { TNode root; public Tree(){ root = null; } public TNode insertNode(TNode item, int d) { if (item == null) { return new TNode(d); } if (d < item.data) {

inserting in binary tree doesn't work using java

由 流过昼夜 提交于 2021-02-17 03:03:50
问题 I'm currently learning about trees using java and i have some errors going on here in the insertion of items in a binary tree I don't why it doesn't work this is the code: tree node: public class TNode { int data; TNode left; TNode right; public TNode(int data) { this.data = data; left = null; right = null; } } tree class: public class Tree { TNode root; public Tree(){ root = null; } public TNode insertNode(TNode item, int d) { if (item == null) { return new TNode(d); } if (d < item.data) {

Using Binary Search with Vectors.

由 ﹥＞﹥吖頭↗ 提交于 2021-02-16 08:55:32
问题 I'm trying to implement an algorithm that for each string in the first vector it does a binary search in the second vector and will output "YES:" if it finds a match or "No:" otherwise. Right now with my program my algo always outputs "NO:" and I can't find out what's going wrong. Any hints or tips would be appreciated. My Binary search: bool binary_search(const vector<string>& sorted_vec, string key) { size_t mid, left = 0 ; size_t right = sorted_vec.size(); // one position passed the right

Using Binary Search with Vectors.

由 不打扰是莪最后的温柔 提交于 2021-02-16 08:55:17
问题 I'm trying to implement an algorithm that for each string in the first vector it does a binary search in the second vector and will output "YES:" if it finds a match or "No:" otherwise. Right now with my program my algo always outputs "NO:" and I can't find out what's going wrong. Any hints or tips would be appreciated. My Binary search: bool binary_search(const vector<string>& sorted_vec, string key) { size_t mid, left = 0 ; size_t right = sorted_vec.size(); // one position passed the right

【LeetCode OJ】Maximum Depth of Binary Tree

由 杀马特。学长 韩版系。学妹 提交于 2021-02-12 05:49:44
Given a binary tree, find its maximum depth. The maximum depth is the number of nodes along the longest path from the root node down to the farthest leaf node. /** * Definition for binary tree * public class TreeNode { * int val; * TreeNode left; * TreeNode right; * TreeNode(int x) { val = x; } * } */ public class Solution { private int max = 0; public void preOrder(TreeNode root, int depth){ if(root == null)return; preOrder(root.left, depth + 1); if(max < depth) max = depth; preOrder(root.right, depth + 1); } public int maxDepth(TreeNode root) { preOrder(root, 1); return max; } } 来源： oschina

Convert Hexadecimal to Binary (large values)

由 折月煮酒 提交于 2021-02-11 18:11:35
问题 -(NSString *)toBinary:(NSUInteger)input { if (input == 1 || input == 0) return [NSString stringWithFormat:@"%u", input]; return [NSString stringWithFormat:@"%@%u", [self toBinary:input / 2], input % 2]; } NSString *hex = txtHexInput.text; NSUInteger hexAsInt; [[NSScanner scannerWithString:hex] scanHexInt:&hexAsInt]; NSString *binary = [NSString stringWithFormat:@"%@", [self toBinary:hexAsInt]]; txtBinaryInput.text = binary; The above code works great... that is until you need to exceed 32

Convert Hexadecimal to Binary (large values)

由 送分小仙女□ 提交于 2021-02-11 18:09:14
问题 -(NSString *)toBinary:(NSUInteger)input { if (input == 1 || input == 0) return [NSString stringWithFormat:@"%u", input]; return [NSString stringWithFormat:@"%@%u", [self toBinary:input / 2], input % 2]; } NSString *hex = txtHexInput.text; NSUInteger hexAsInt; [[NSScanner scannerWithString:hex] scanHexInt:&hexAsInt]; NSString *binary = [NSString stringWithFormat:@"%@", [self toBinary:hexAsInt]]; txtBinaryInput.text = binary; The above code works great... that is until you need to exceed 32

Why is Fread reading unsigned-int in reverse order?

由 旧时模样 提交于 2021-02-11 14:39:46
问题 My binary file contains 0400 0000 0000 0000 0400 0000 0000 0000 When I use the following code to read the first 4 bytes in an unsigned int inputInteger FILE *inputFile; inputFile = fopen("./Debug/rnd_2", "rb"); unsigned int inputInteger = 0; fread(&inputInteger, sizeof(unsigned int), 1, inputFile); fclose(inputFile); exit(0); What i get is inputInteger == 4 . Should it not have been 1024 considering the bit position being 00000100 00000000 ? My understanding is the first four bytes are 0400

Streaming binary data from Google Cloud Storage to Cloud Function

由 邮差的信 提交于 2021-02-11 13:26:58
问题 I have some large binary files stored in Google Cloud Storage that require byte by byte processing. I would like to do this processing using a Cloud Function, but this would require streaming the binary data through the cloud function. Does anybody have any idea how to do this. I'm using Python 3.7. 来源： https://stackoverflow.com/questions/60273469/streaming-binary-data-from-google-cloud-storage-to-cloud-function
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