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How to create a method that checks if string1 can be rearranged to equal string2?


How to create a method that checks if string1 can be rearranged to equal string2?

By : Facundo
Date : November 14 2020, 04:48 PM
will help you Update: As @eugen pointed out in the comment, there's a much more efficient way:
code :
str1.chars.sort == str2.chars.sort # => true
str1.chars.permutation.include?(str2.chars) # => true


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Difference between String1.Equals(string2) and string1==string2 C#

Difference between String1.Equals(string2) and string1==string2 C#


By : pericles
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further The first one will always work so long as the compile-time type of both operands is string.
If the compile-time type of either operand is anything other than string, it will use the normal reference identity comparison, rather than comparing strings for equality. Basically you want to call the ==(string, string) overload instead of the normal ==(object, object) overload.
code :
if (object.Equals(string1, string2))
Is String.Equals(string1.Substring(0, x), string2) better than string1.StartsWith(string2)?

Is String.Equals(string1.Substring(0, x), string2) better than string1.StartsWith(string2)?


By : Neha Singh
Date : March 29 2020, 07:55 AM
seems to work fine Looking at the StartsWith method using dotPeek, it eventually calls an internal comparison function that compares the entire string, and returns a boolean result based on the return value of that comparison:
code :
return TextInfo.CompareOrdinalIgnoreCaseEx(this, 0, value, 0, value.Length, value.Length) == 0;
return TextInfo.CompareOrdinalIgnoreCase(this, value) == 0;
using System;
using System.Diagnostics;

namespace ConsoleApplication1
{
    internal class Program
    {
        private static void Main(string[] args)
        {
            var url = "http://stackoverflow.com/questions/8867710/is-string-equalsstring1-substring0-x-string2-better-than-string1-startswit";
            var count = 10000000;
            var http = false;

            Stopwatch sw = Stopwatch.StartNew();

            for (int i = 0; i < count; i++)
            {
                http = url.StartsWith("http:", StringComparison.OrdinalIgnoreCase);
            }

            sw.Stop();

            Console.WriteLine("StartsWith: {0} ms", sw.ElapsedMilliseconds);

            sw.Restart();

            for (int i = 0; i < count; i++)
            {
                http = string.Equals(url.Substring(0, 5), "http:", StringComparison.OrdinalIgnoreCase);
            }

            sw.Stop();

            Console.WriteLine("Equals: {0} ms", sw.ElapsedMilliseconds);

            Console.ReadLine();
        }
    }
}
Bash: if-statement string equal-to string1 OR equal-to string2

Bash: if-statement string equal-to string1 OR equal-to string2


By : Simon
Date : November 07 2020, 09:00 AM
Does that help I am trying to test if a string is not equal to either of two strings. For example, in C++, this would be written as: , At least three possibilities here:
code :
if [ "$string1" != "$string2" ] || [ "$string1" != "$string3" ]
if [ "$string1" != "$string2" -o "$string1" != "$string3" ]
if [[ "$string1" != "$string2" || "$string1" != "$string3" ]]
Read string1 within string2 and count occurences of string1 in string2

Read string1 within string2 and count occurences of string1 in string2


By : yoooo
Date : March 29 2020, 07:55 AM
hop of those help? Use strstr like this:
code :
#include <stdio.h>
#include <string.h>

int substr_count(const char *srcString, const char *subString){
    int countOccurence = 0;
    size_t sub_len = strlen(subString);
    const char *p = srcString;

    while(p = strstr(p, subString)){//if NOT NULL, found it
        ++countOccurence;
        p += sub_len;//set next search point
    }
    return countOccurence;
}

int main(void){
    char srcString[200] = "";
    char subString[] = "mystring";//const *char subString = "mystring"
    int get_count = 0;

    scanf("%199s", srcString);//199 : Set limits
    get_count = substr_count(srcString, subString);

    printf("%s occurs %d times in %s\n", subString, get_count, srcString);
}
Regex: extract strings from pattern string1.string2'string3 where string1 can contain a '.' character

Regex: extract strings from pattern string1.string2'string3 where string1 can contain a '.' character


By : Nafees Hasan
Date : March 29 2020, 07:55 AM
I wish this helpful for you I need a regex to extract string1, string2, and string3 from a string of the form: string1.string2'string3. The separators '.' and ''' may not be present in the input.
code :
std::regex re("([^\\.']+(\\.(?![^']{3}('|$))[^\\.']+)*)(\\.([^']{3}))?('(.+))?");
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