How do you reverse a string in place in C or C++?
How do you reverse a string in C or C++ without requiring a separate buffer to hold the reversed string? 20 Answers 20
reverse
Right way to reverse a pandas DataFrame?
Here is my code: import pandas as pd data = pd.DataFrame({‘Odd’:[1,3,5,6,7,9], ‘Even’:[0,2,4,6,8,10]}) for i in reversed(data): print(data[‘Odd’], data[‘Even’]) When I run this code, i get the following error: Traceback (most recent call last): File “C:\Python33\lib\site-packages\pandas\core\generic.py”, line 665, in _get_item_cache return cache[item] KeyError: 5 During handling of the above exception, another exception occurred: Traceback (most recent … Read more
angular ng-repeat in reverse
How can i get a reversed array in angular? i’m trying to use orderBy filter, but it needs a predicate(e.g. ‘name’) to sort: <tr ng-repeat=”friend in friends | orderBy:’name’:true”> <td>{{friend.name}}</td> <td>{{friend.phone}}</td> <td>{{friend.age}}</td> <tr> Is there a way to reverse original array, without sorting. like that: <tr ng-repeat=”friend in friends | orderBy:”:true”> <td>{{friend.name}}</td> <td>{{friend.phone}}</td> <td>{{friend.age}}</td> <tr> … Read more
How to get a reversed list view on a list in Java?
I want to have a reversed list view on a list (in a similar way than List#sublist provides a sublist view on a list). Is there some function which provides this functionality? I don’t want to make any sort of copy of the list nor modify the list. It would be enough if I could … Read more
Python list sort in descending order
How can I sort this list in descending order? timestamps = [ “2010-04-20 10:07:30”, “2010-04-20 10:07:38”, “2010-04-20 10:07:52”, “2010-04-20 10:08:22”, “2010-04-20 10:08:22”, “2010-04-20 10:09:46”, “2010-04-20 10:10:37”, “2010-04-20 10:10:58”, “2010-04-20 10:11:50”, “2010-04-20 10:12:13”, “2010-04-20 10:12:13”, “2010-04-20 10:25:38” ] 6 Answers 6
JQuery .each() backwards
I’m using JQuery to select some elements on a page and then move them around in the DOM. The problem I’m having is I need to select all the elements in the reverse order that JQuery naturally wants to select them. For example: <ul> <li>Item 1</li> <li>Item 2</li> <li>Item 3</li> <li>Item 4</li> <li>Item 5</li> </ul> … Read more
Print a list in reverse order with range()?
How can you produce the following list with range() in Python? [9, 8, 7, 6, 5, 4, 3, 2, 1, 0] 19 Answers 19 use reversed() function: reversed(range(10)) It’s much more meaningful. Update: If you want it to be a list (as btk pointed out): list(reversed(range(10))) Update: If you want to use only range to … Read more
How do you reverse a string in-place in JavaScript?
How do you reverse a string in-place in JavaScript when it is passed to a function with a return statement, without using built-in functions (.reverse(), .charAt() etc.)? 58 s 58
Reverse / invert a dictionary mapping
Given a dictionary like so: my_map = {‘a’: 1, ‘b’: 2} How can one invert this map to get: inv_map = {1: ‘a’, 2: ‘b’} 32 s 32
Traverse a list in reverse order in Python
So I can start from collection[len(collection)-1] and end in collection[0]. I also want to be able to access the loop index. 27 s 27 Use the built-in reversed() function: >>> a = [“foo”, “bar”, “baz”] >>> for i in reversed(a): … print(i) … baz bar foo To also access the original index, use enumerate() on … Read more