stringbuilder Questions
1
Solved
By amortized analysis, we know that N insertions with StringBuilder#append method take O(N) time. But here is where I get lost. Consider this where inputString is an input string from a user.
for ...
Stubbs asked 27/6, 2019 at 22:19
6
I have the following code:
StringBuilder sb = new StringBuilder();
sb.Append("Ola");
sb.Append("Jola");
sb.Append("Zosia");
Can I iterate over StringBuilder object using for, or foreach?
Can I ...
Basilica asked 1/7, 2015 at 10:42
1
Solved
Knowing that String implements CharSequence interface, so why does StringBuilder have a constructor for CharSequence and another one for String?
No indication in the javadoc !
public final class S...
Overhear asked 13/5, 2019 at 6:12
1
I try to understand how reduce() method works exactly with parallel streams and I don't understand why the following code do not return the concatenation of these strings.
This is the code:
publ...
Ahearn asked 7/5, 2019 at 13:13
3
Solved
following this and this documentation I would use the QStringBuilder in a for loop. The code where I should apply it is
QStringList words;
QString testString;
for (auto it = words.constBegin(); i...
Budget asked 29/8, 2012 at 21:43
4
Solved
Here's some simple Java code:
String s = new StringBuilder().append("a").append("b").append("c").toString();
I compile it with JRE 1.6, and I observe the following in the decompiled class file:
...
Scourings asked 25/9, 2014 at 21:43
4
Solved
Groovy supports a literal syntax for creating a StringBuilder/StringBuffer instead of the usual
def sb = new StringBuilder()
However, I can't seem to remember (or find on Google) the correct syn...
Gad asked 25/11, 2009 at 14:56
8
Solved
How do you append a new line(\n\r) character in StringBuilder?
Calbert asked 11/4, 2010 at 16:34
9
Solved
What is the most efficient/elegant way to dump a StringBuilder to a text file?
You can do:
outputStream.write(stringBuilder.toString().getBytes());
But is this efficient for a very long file?
...
Rhodia asked 4/11, 2009 at 22:42
3
Solved
I'm building a stress-testing client that hammers servers and analyzes responses using as many threads as the client can muster. I'm constantly finding myself throttled by garbage collection (and/o...
Morelos asked 18/7, 2012 at 1:32
5
Solved
I want to concatenate or append special character as colon : after an every 2 character in String.
For Example:
Original String are as follow:
String abc =AABBCCDDEEFF;
After concatenate or a...
Orient asked 24/1, 2019 at 11:27
1
Solved
As can be seen here, one of String.Join's overloads works with raw pointers and uses something called UnSafeCharBuffer. Why is this? Is it a performance optimization?
Fallible asked 17/1, 2019 at 21:33
5
Solved
I have to use StringBuilder instead of a List of strings because of being stuck with .NET 1.1 for this project.
I want to write a series of debug messages I've written to a file to study at my le...
Personalize asked 15/3, 2013 at 23:32
2
Solved
example code:
StringBuffer sb = new StringBuffer("hi");
sb = null;
Question:
will the literal string "hi" somehow stay in memory, even after the StringBuffer has been garbage collected? O...
Hailstorm asked 20/12, 2018 at 21:28
1
Solved
Introduction
I have an app and want to force the user to update it, if a new version is at the google play market. This is working fine with the following code but is not very stable.
I am doing i...
Pledgee asked 13/11, 2018 at 9:45
1
Solved
What's the most efficient way to concatenate strings, if I already only have ReadOnlySpan slices?
Simplified example:
public class Program {
public string ConcatSpans(string longstring) {
var s...
Guttering asked 6/11, 2018 at 21:33
5
Solved
In vb.net (or C#) I can't figure out how to compare a stringbuilder to a string. I have searched quite a bit and can't find the answer. I had to write my own routine. Isn't there a better way?
Thi...
Siglos asked 26/8, 2014 at 13:40
8
Solved
I have an ArrayList with some Strings. I want to store that list of numbers from the ArrayList in a single string separated by a comma like the following.
String s = "350000000000050287,3921564868...
Wordsmith asked 8/10, 2015 at 17:58
5
Solved
I have a small problem:
I have a List of fields, with 3 Values. I want to build my String with these three Values,
delimited by a "TAB"..
Code:
StringBuilder stringBuilder = new StringBuilder();...
Incurve asked 8/2, 2012 at 10:44
8
Solved
I am building a validation routine that validates contents and then gives warning (for failures) in form of StringBuilder. Say in below code I am checking lower bound for values paramX and paramY.
...
Athenian asked 6/11, 2013 at 13:31
5
Solved
I recently encountered with a Java 8 class StringJoiner which adds the String using the delimiters and adds prefix and suffix to it, but I can't understand the need of this class as it also uses St...
Idealist asked 17/12, 2014 at 9:45
5
Solved
I have searched about this, but I couldn't find why StringBuilder's ensureCapacity() method won't lengthen the old capacity by just doubling but also adding two.
So, when default capacity of 16 is...
Bangweulu asked 14/7, 2017 at 4:17
4
var sb = new StringBuilder ();
if (condition1) sb.Append ("one");
if (condition2) sb.Append ("two");
if (condition3) sb.Append ("three");
if (condition4) sb.Append ("four");
if (condition5) sb.App...
Oversize asked 19/12, 2014 at 14:25
2
Solved
I've written some code which has a lot of string creation. To try to avoid the expensive string creation over and over, I'm using the java StringBuilder class.
My code is a bit like this:
public...
Millen asked 12/4, 2018 at 9:14
3
How do I prove programmatically that StringBuilder is not threadsafe?
I tried this, but it is not working:
public class Threadsafe {
public static void main(String[] args) throws InterruptedExce...
Judy asked 1/2, 2018 at 8:37
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