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How can we prepend strings with StringBuilder?
... O(n^2) time.
A naive approach would be to add an offset into the backing char[] buffer as well as the length. When there is not enough room for a prepend, move the data up by more than is strictly necessary. This can bring performance back down to O(n log n) (I think). A more refined approach is t...
How to sum up an array of integers in C#
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Point taken. Yet, the following saves 18 chars compared to your sample: foreach (int i in arr) sum += i;
– Jørn Schou-Rode
Mar 16 '10 at 11:44
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Generate UML Class Diagram from Java Project [closed]
... sucks. Hard. Instructions want users to prefix all properties with an 'f' char to sniff them. It is destructive, too, and adds a bunch of its own comments to ALL class files. Also, instructions are non-intuitive. If someone can refute my experience (based on the current version in Kepler), please d...
Is Java really slow?
... to a self-fulfilling prophecy -- when people care about speed, they often select C++ because it has that reputation. They put extra time and effort into optimization, and a new generation of fast C++ code is written.
To summarize, the normal implementation of Java makes maximum optimization proble...
How to get current date in jquery?
...ing represented by numbers less than 10 (meaning the strings will have one char instead of two). See this jsfiddle for comparison.
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How do I get extra data from intent on Android?
...TRING);
getArguments().getBoolean(ARG_SECTION_BOOL);
getArguments().getChar(ARG_SECTION_CHAR);
getArguments().getByte(ARG_SECTION_DATA);
}
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How to get first character of string?
I have a string, and I need to get its first character.
16 Answers
16
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in javascript, how can i get the last character in a string [duplicate]
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Since in Javascript a string is a char array, you can access the last character by the length of the string.
var lastChar = myString[myString.length -1];
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What exactly does the .join() method do?
... problem in your case is that a string is itself iterable, giving out each character in turn. Your code breaks down to this:
"wlfgALGbXOahekxSs".join("595")
which acts the same as this:
"wlfgALGbXOahekxSs".join(["5", "9", "5"])
and so produces your string:
"5wlfgALGbXOahekxSs9wlfgALGbXOahekxS...
New line in JavaScript alert box
...he crocodile hunter, in ASP.NET behind code alerts, you need to use escape characters, this means Registerblabla(bla,bla,"alert('hi\\nhi second line')")
– NicolasT
Nov 16 '11 at 14:47
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