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How do I get the first n characters of a string without checking the size or going out of bounds?
...If the reader hasn't seen this trick, he/she has to think harder to understand the code. IMO, the code's meaning is more obvious in the if / else version. For a cleaner / more readable solution, see @paxdiablo's answer.
sh...
Java: Detect duplicates in ArrayList?
...lt; list.size()){
/* There are duplicates */
}
Update: If I'm understanding your question correctly, you have a 2d array of Block, as in
Block table[][];
and you want to detect if any row of them has duplicates?
In that case, I could do the following, assuming that Block implements "equals"...
Insertion Sort vs. Selection Sort
I am trying to understand the differences between Insertion Sort and Selection Sort.
20 Answers
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What method in the String class returns only the first N characters?
...first str.Length characters of str", but Substring does that check for you and just does return this if you've asked for the whole string.
– stevemegson
Aug 25 '10 at 14:37
2
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Get index of array element faster than O(n)
Given I have a HUGE array, and a value from it. I want to get index of the value in array. Is there any other way, rather then call Array#index to get it? The problem comes from the need of keeping really huge array and calling Array#index enormous amount of times.
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How can I use PHP to dynamically publish an ical file to be read by Google Calendar?
Any Google search on PHP ical just brings up phpicalendar and how to parse or read IN ical files. I just want to write a PHP file that pulls events from my database and writes them out in ical format.
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MVC Vs n-tier architecture
...t exactly is the difference between MVC(which is an architectural pattern) and an n-tier architecture for an application. I searched for it but couldn't find a simple explanation. May be I am a bit naive on MVC concepts, so if anyone can explain the difference then it would be great.
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If list index exists, do X
In my program, user inputs number n , and then inputs n number of strings, which get stored in a list.
12 Answers
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finding and replacing elements in a list
I have to search through a list and replace all occurrences of one element with another. So far my attempts in code are getting me nowhere, what is the best way to do this?
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AngularJS For Loop with Numbers & Ranges
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I tweaked this answer a bit and came up with this fiddle.
Filter defined as:
var myApp = angular.module('myApp', []);
myApp.filter('range', function() {
return function(input, total) {
total = parseInt(total);
for (var i=0; i<total; i++)...