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Getting incorrect output when using the Java method indexof in combination with substring to create a new string


Getting incorrect output when using the Java method indexof in combination with substring to create a new string

By : Tony
Date : November 20 2020, 01:01 AM
Does that help Change the following lines:
int eq = relativeDN.indexOf('='); String sub = relativeDN.substring(0, eq); in your for loop to
code :


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How to find substring from string without using indexof method in C#?

How to find substring from string without using indexof method in C#?


By : Jollo
Date : March 29 2020, 07:55 AM
I wish this helpful for you Sorry.. thought this would be a fun exercise for me, so...
Spoiler
code :
class Program
{
    static void Main(string[] args)
    {
        string str = "abcdefg";
        string substr = "cde";
        int index = IndexOf(str, substr);
        Console.WriteLine(index);
        Console.ReadLine();
    }

    private static int IndexOf(string str, string substr)
    {
        bool match;

        for (int i = 0; i < str.Length - substr.Length + 1; ++i)
        {
            match = true;
            for (int j = 0; j < substr.Length; ++j)
            {
                if (str[i + j] != substr[j])
                {
                    match = false;
                    break;
                }
            }
            if (match) return i;
        }

        return -1;
    }
}
Length of substring matched by culture-sensitive String.IndexOf method

Length of substring matched by culture-sensitive String.IndexOf method


By : Banjerd Millionrich
Date : March 29 2020, 07:55 AM
wish of those help You will need to directly call FindNLSString or FindNLSStringEx yourself. String.IndexOf uses FindNLSStringEx but all the information you need is available in FindNLSString.
Here is an example of how to rewrite your Replace method that works against your test cases. Note that I am using the current user locale read up the API documentation if you want to use the system locale or provide your own. I am also passing in 0 for the flags which means it will use the default string comparison options for the locale, again the documentation can help you provide different options.
code :
public const int LOCALE_USER_DEFAULT = 0x0400;

[DllImport("kernel32.dll", SetLastError = true, ExactSpelling = true)]
internal static extern int FindNLSString(int locale, uint flags, [MarshalAs(UnmanagedType.LPWStr)] string sourceString, int sourceCount, [MarshalAs(UnmanagedType.LPWStr)] string findString, int findCount, out int found);

public static string ReplaceWithCombiningCharSupport(string text, string oldValue, string newValue)
{
    int foundLength;
    int index = FindNLSString(LOCALE_USER_DEFAULT, 0, text, text.Length, oldValue, oldValue.Length, out foundLength);
    return index >= 0 ? text.Substring(0, index) + newValue + text.Substring(index + foundLength) : text;
}
Java String, indexof and substring to get a date parsed

Java String, indexof and substring to get a date parsed


By : Nathan Patrick
Date : March 29 2020, 07:55 AM
help you fix your problem I found the answer here Parse String to Date with Different Format in Java , modified the date formats as per your need
MMMM for complete month in String
code :
SimpleDateFormat fromUser = new SimpleDateFormat("MM/dd/yyyy");
SimpleDateFormat myFormat = new SimpleDateFormat("MMMM dd, yyyy");

try {    
    String reformattedStr = myFormat.format(fromUser.parse(inputString));
} catch (ParseException e) {
    e.printStackTrace();
}
How to Extract Multiple words from a string using IndexOf and substring Java?

How to Extract Multiple words from a string using IndexOf and substring Java?


By : Juan Martín Ratti
Date : March 29 2020, 07:55 AM
With these it helps Here is how I would refactor your while loop to correctly extract, print, and count all words in a sentence:
code :
while (scan.hasNext()) {
    int wordCount = 0;
    int numChars = 0;
    fileRead = scan.nextLine();

    // Note: I add an extra space at the end of the input sentence
    //       so that the while loop will pick up on the last word.
    if (fileRead.charAt(fileRead.length() - 1) == '.') {
        fileRead = fileRead.substring(0, fileRead.length() - 1) + " ";
    }
    else {
        fileRead = fileRead + " ";
    }
    int index = fileRead.indexOf(" ");
    do {
        String strA = fileRead.substring(0, index);
        System.out.print(strA + " ");
        fileRead = fileRead.substring(index+1, fileRead.length());
        index = fileRead.indexOf(" ");
        wordCount++;
        numChars += strA.length();
    } while (index != -1);

    // here is your computation.
    if (wordCount > 0) {
        double result = (double)numChars / wordCount;  // average length of words
        result = Math.pow(result, 2.0);                // square the average
        result = wordCount * result;                   // multiply by number of words
        System.out.println(result);                    // output this number
    }
}
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Would Java indexOf (brute force method) be more practical for me or some other substring algorithm?

Would Java indexOf (brute force method) be more practical for me or some other substring algorithm?


By : Michael Stilmant
Date : March 29 2020, 07:55 AM
I wish this helpful for you You can replace the hashtable with a Trie.
Split the line of text into words using white space to separate words. Then check if the word is in the Trie. If it is in the Trie, update a counter associated with the word. Ideally, the counter would be integrated into the Trie.
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