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how to return index of a sorted list? [duplicate]
I need to sort a list and then return a list with the index of the sorted items in the list. For example, if the list I want to sort is [2,3,1,4,5] , I need [2,0,1,3,4] to be returned.
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Define: What is a HashSet?
... HashSet holds a set of objects, but in a way that it allows you to easily and quickly determine whether an object is already in the set or not. It does so by internally managing an array and storing the object using an index which is calculated from the hashcode of the object. Take a look here
Hash...
Why historically do people use 255 not 256 for database field magnitudes?
...ric reason why? I assume it's something to do with paging / memory limits, and performance but the distinction between 255 and 256 has always confused me.
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Can I concatenate multiple MySQL rows into one field?
...048;
Of course, you can change 2048 according to your needs. To calculate and assign the value:
SET group_concat_max_len = CAST(
(SELECT SUM(LENGTH(hobbies)) + COUNT(*) * LENGTH(', ')
FROM peoples_hobbies
GROUP BY person_id)
AS UNSIGNED
);
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AngularJS disable partial caching on dev machine
... browser cache - In Chrome Dev Tools on the bottom right click on the gear and tick the option
Disable cache (while DevTools is open)
Update: In Firefox there is the same option in Debugger -> Settings -> Advanced Section (checked for Version 33)
Update 2: Although this option appears ...
What is the use of GO in SQL Server Management Studio & Transact SQL?
SQL Server Management Studio always inserts a GO command when I create a query using the right click "Script As" menu. Why? What does GO actually do?
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How to sort an array based on the length of each element?
...: b.length - a.length
ES6 solution
Attention: not all browsers can understand ES6 code!
In ES6 we can use an arrow function expressions.
let array = ["ab", "abcdefgh", "abcd"];
array.sort((a, b) => b.length - a.length);
console.log(JSON.stringify(array, null, '\t'));
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Viewing contents of a .jar file
... @salvob You don't need the hyphen as it takes after tar with the options mandatory.
– Tom Hawtin - tackline
Jan 12 '17 at 16:51
2
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SQL: IF clause within WHERE clause
...ion in most cases. In my case, I wanted the change the comparison operator and hence I used the next approach.
– Birla
Nov 15 '14 at 11:59
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Definitive way to trigger keypress events with jQuery
I've read all the answers on to this questions and none of the solutions seem to work.
10 Answers
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