for-loop

问题 I have a list of words: words=["alpha","omega","up","down","over","under","purple","red","blue","green"] I have two functions that are supposed to find the shortest and longest words in this list: def bigWords(list=[], *args): largestWord="" largestLen=0 for word in list: if largestWord<len(word): largestWord=len(word) largestWord=word print "The longest word(s) in the list is %s." % largestWord def smallWords(list=[], *args): smallestWord="" smallestLen=0 for word in list: if smallestLen>len

问题 I have a list of words: words=["alpha","omega","up","down","over","under","purple","red","blue","green"] I have two functions that are supposed to find the shortest and longest words in this list: def bigWords(list=[], *args): largestWord="" largestLen=0 for word in list: if largestWord<len(word): largestWord=len(word) largestWord=word print "The longest word(s) in the list is %s." % largestWord def smallWords(list=[], *args): smallestWord="" smallestLen=0 for word in list: if smallestLen>len

问题 In the following code, when catching NumberFormatException out of for iteration, the strings in appropriate form appearing in strList before the first bad one (i.e., "illegal_3" ) have been parsed successfully (i.e., "1" and "2" have been parsed as integers 1 and 2 ). public void testCaughtRuntimeExceptionOutOfIteration() { List<String> strList = Stream.of("1", "2", "illegal_3", "4", "illegal_5", "6").collect(Collectors.toList()); List<Integer> intList = new ArrayList<>(); try{ for (String

问题 This question already has answers here : JavaScript closure inside loops – simple practical example (44 answers) Javascript infamous Loop issue? [duplicate] (5 answers) Closed 6 years ago . I have this code: var items = this.llistat.getElementsByTagName('a'); for( var i = 0; i < items.length; i++ ){ items[i].addEventListener('click', function(event) { alert( i ); }, items[i]); } where the event is listened, but there are 3 items and the alert allways print 3 on any of the elements (it doesn't

问题 Here comes 2 windows pop out during the testing. my code: string BaseWindow = driver.CurrentWindowHandle; ReadOnlyCollection<string> handles = driver.WindowHandles; foreach(string handle in handles) { Boolean a = driver.SwitchTo().Window(handle).Url.Contains("Main"); if (a == true) { InitialSetting.driver.SwitchTo().Window(handle); break; } } I want to switch to the window which url contains "Main". But when the test is running, it switches between two windows continuously and it doesn't stop

问题 I am very new to programming with R, but I am trying to read in multiple files for a directory and give them each a unique name. I am reading the files in using the Dendrochronology Program Library in R (package dpIR) and the read.tucson function. Although I'm using a specific package, I think my question is fairly general: Within the loop, I want to create files by concatenating a "t" with each individual files name. So, if I have a file named "2503" in my directory, I want to create a

问题 I have a many to one problem, I have data organized in mysql like: >order1 : mycustomer : item1 >order1 : mycustomer : item2 >order2 : mycustomer : item3 >order2 : mycustomer : item1 >order3 : mycustomer : item2 I want to create the JSON something like (for explanation purposes) >order1 mycustomer >> item1 >> item2, >order2 mycustomer >> item3 >> item1, >order3 mycustomer >> item2 But my looping is not correct, I am not getting the order with item array then repeat for next order. What am I

问题 I am given a list of integers/floats and I need to find the two numbers closest together. How would I do that using only nested for loops? 回答1: For each element, you have to compare the distance of it to each of the other elements with your previous "closest" value - any time this comparison yields smaller values, you remember that pair as the "two closest" ones. So, it is straightforward: def find_two_closest(numbers): # most distant points: delta = max(numbers), min(numbers) for i, element

问题 the difference (speed, performace, side effects, ...) between implementations of the for loop: between var i; for(i = 0; i < length; i++){ //Do something} // more code and for(var i = 0; i < length; i++){ //Do something} // more code and for(i = 0; i < length; i++){ //Do something} // more code and between var e; for( e in array){ //Do something} // more code and for(var e in array){ //Do something} // more code and for(e in array){ //Do something} // more code 回答1: There is no difference.

问题 I am working on a project to define a search function in Python3. Goal is to output the keywords from a list and the sentence(s) from adele.txt that contain(s) the keywords. This is a user defined list, userlist=['looking','for','wanna'], adele.txt is on the github page, https://github.com/liuyu82910/search Below is my function. The first loop is to get all the lines in lowercase from adele.txt, second loop to get the each word in lowercase in userlist. My code is not looping correctly. What