nested-loops

问题 I am new to the whole XSLT thing and I've already tried looking it up through several forums, but I still haven't found the actual solution to my problem. I have the following XML: <Cinema> <Movie name="movie1" in="191" out="191"> <Period time="16:00:00" in="20" out="20"/> <Period time="18:00:00" in="71" out="70"/> <Period time="20:00:00" in="100" out="101"/> </Movie> <Movie name="movie2" in="105" out="105"> <Period time="16:00:00" in="13" out="13"/> <Period time="18:00:00" in="34" out="34"/>

问题 I am new to the whole XSLT thing and I've already tried looking it up through several forums, but I still haven't found the actual solution to my problem. I have the following XML: <Cinema> <Movie name="movie1" in="191" out="191"> <Period time="16:00:00" in="20" out="20"/> <Period time="18:00:00" in="71" out="70"/> <Period time="20:00:00" in="100" out="101"/> </Movie> <Movie name="movie2" in="105" out="105"> <Period time="16:00:00" in="13" out="13"/> <Period time="18:00:00" in="34" out="34"/>

问题 I have a list of dictionaries (JSON response). Each dictionary contains a key-value pairs with a list of strings. I'm processing these strings using a nested for-loop, which works fine. However, I wondered if it is possible to collapse the two for-loops into a single loop using the product method. Obviously I cannot use the loop-variable a in the range function because it's not defined yet. Is there a way to do this without iterating over the data multiple times? from itertools import product

问题 Say you have this really complex algorithm that requires dozens of for loops. Does JavaScript have a limit to how deep loops can be nested or is there no limit? What is the best practice for deep nested for loops? I tried searching on MDN but couldn't find what I was looking for Edit I'm looking if there is a built in limit. For example if you had something like this If ( a = 1, a < 3, a++) { if (b = 1; b < 3; b++) { ... if (cd = 1; cd < 3; cd++) Would this actually be possible or would JS

问题 I am trying to output all the possible unique integer combinations from 1 to max for a set number of integers. So for 3 integers and a max of 4 I would get: 123 124 134 234 I am doing this with nested for loops but I want to allow the user to input the number of integers at runtime. right now I have if(numInts >6); for(int x = 1; x < max; x++); if(numInts >5); for(int y = 1; y < max; y++); ... Is there a way to clean this up so I don't have to write out each possible integer for loop. PS: I

问题 I have a code that generates all of the possible combinations of 4 integers between 0 and 36. This will be 37^4 numbers = 1874161. My code is written in MATLAB: i=0; for a = 0:36 for b= 0:36 for c = 0:36 for d = 0:36 i=i+1; combination(i,:) = [a,b,c,d]; end end end end I've tested this with using the number 3 instead of the number 36 and it worked fine. If there are 1874161 combinations, and with An overly cautions guess of 100 clock cycles to do the additions and write the values, then if I

问题 Okay - I'm sure this has been answered here before but I can't find it.... My problem: I have a list of lists with this composition 0.2 A 0.1 A 0.3 A 0.3 B 0.2 C 0.5 C My goal is to output the following: 0.6 A 0.3 B 0.7 C In other words, I need to merge the data from multiple lines together. Here's the code I'm using: unique_percents = [] for line in percents: new_percent = float(line[0]) for inner_line in percents: if line[1] == inner_line[1]: new_percent += float(inner_line[0]) else: temp =

问题 I am very new to R and searched about this on forums but couldn't get a close enough solution for this. I am trying to do a mapping between the ip address & corresponding geo locations. I have 2 data sets. Set-a (1,60,000 rows): ip(int) | ID(int) Set-b (16,00,000 rows): Ip1(int) | Ip2(int) | Code(str) | Country(str) | Area1(str) | Area2(str) I am trying to do the following: if ip lies between Ip1 & Ip2 then add Country & Region to Set-a. I am doing the following (obviously not a very good way

问题 I am trying to create a program that can take many numbers as I want in C++ language. Then it find what operators can make the equation true and show all correct possible operation. Example: If I put 3 5 15 Then it output 3x5 = 15 If I put 1 2 3 4 4 Then it outputs 1+2-3+4 =4 The following code is my written program: The problem about it is that when I want to reduce the number of input or increase the number of input I need to add/reduce nested loops EVERYTIME. I want to know what is a more

问题 I am starting to code in python. When I was to take two inputs from user with a space between the two inputs my code was like min, p = input().split(" ") min=int(min) p=float(p) which worked fine. In another such problem I am to take a n*n matrix as user input which I declared as arr=[[0 for i in range(n)] for j in range(n)] printing the arr gives a fine matrix(in a single row though) but I am to replace each element '0'with a user input so I use nested loops as for i in range(0,n) for j in