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what is the problem 723 on leetcode

Ryan Stankowitz answered on May 5, 2022 Popularity 2/10 Helpfulness 1/10

answer what is the problem 723 on leetcode

what is the problem 723 on leetcode

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class Solution {
    public int[][] candyCrush(int[][] board) {
        int r = board.length, c = board[0].length;
        boolean crush = false;
        for (int i = 0; i < r; i++) {
            for (int j = 0; j < c; j++) {
                // check horizontal line
                int v = Math.abs(board[i][j]);
                if (v == 0) continue;
                if (j + 2 < c && v == Math.abs(board[i][j + 1]) && v == Math.abs(board[i][j + 2])) {
                    crush = true;
                    board[i][j] = board[i][j + 1] = board[i][j + 2] = -v;
                }
                // check vertical line
                if (i + 2 < r && v == Math.abs(board[i + 1][j]) && v == Math.abs(board[i + 2][j])) {
                    crush = true;
                    board[i][j] = board[i + 1][j] = board[i + 2][j] = -v;
                }
            }
        }
        // crush candy
        for (int j = 0; j < c; j++) {
            int id = r - 1;
            for (int i = r - 1; i >= 0; i--) {
                if (board[i][j] > 0) {
                    board[id--][j] = board[i][j];
                }
            }
            while (id >= 0) board[id--][j] = 0;
        }
        return crush ? candyCrush(board) : board;
    }
}

Popularity 2/10 Helpfulness 1/10 Language whatever

Source: just4once.gitbooks.io

Tags: whatever

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Contributed on Sep 25 2024

Ryan Stankowitz

0 Answers Avg Quality 2/10

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you have the following c# code. stringbuilder sb = new stringbuilder(reallylongstring); the reallylongstring variable is a string in which a very long string is stored. you need to identify whether a string stored in an object named stringtofind is within

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/** There are a number of ways to accomplish that
    1) Use the default StringBuilder function `IndexOf`
    2) Another way is to implement a fast search algorithm `Knuth-Morris-Pratt (KMP) algorithm,
       which is an efficient string searching algorithm that works by precomputing a partial
       match table based on the pattern to be searched.
       The KMP algorithm has a time complexity of O(n+m), where n is the length of the text
       to be searched and m is the length of the pattern to be searched.
   .
   .
   .
  Here's an example implementation of the KMP algorithm in C#:
**/


public static int KMP(string text, string pattern)
{
    int n = text.Length;
    int m = pattern.Length;

    int[] pi = ComputePrefix(pattern);

    int j = 0;
    for (int i = 0; i < n; i++)
    {
        while (j > 0 && pattern[j] != text[i])
        {
            j = pi[j - 1];
        }
        if (pattern[j] == text[i])
        {
            j++;
        }
        if (j == m)
        {
            return i - m + 1;
        }
    }
    return -1;
}

private static int[] ComputePrefix(string pattern)
{
    int m = pattern.Length;
    int[] pi = new int[m];

    int j = 0;
    for (int i = 1; i < m; i++)
    {
        while (j > 0 && pattern[j] != pattern[i])
        {
            j = pi[j - 1];
        }
        if (pattern[j] == pattern[i])
        {
            j++;
        }
        pi[i] = j;
    }

    return pi;
}


// To use the above code to search for a string within a StringBuilder object,
// you can simply call the KMP method with the ToString() method of the
// StringBuilder object and the string you want to search for:


StringBuilder sb = new StringBuilder(reallylongstring);
string stringtofind = "some string";
int index = KMP(sb.ToString(), stringtofind);

if (index != -1)
{
    Console.WriteLine("The string '{0}' is found at index {1}.", stringtofind, index);
}
else
{
    Console.WriteLine("The string '{0}' is not found.", stringtofind);
}

// Note:
//      that the ToString() method is called to convert the StringBuilder
//      object to a string before passing it to the KMP method.

// https://www.geeksforgeeks.org/kmp-algorithm-for-pattern-searching/

Popularity 10/10 Helpfulness 1/10 Language csharp

Source: www.geeksforgeeks.org

Tags: algorithm algo

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Contributed on Mar 03 2023

Mckynde

0 Answers Avg Quality 2/10

you have the following c# code. stringbuilder sb = new stringbuilder(reallylongstring); the reallylongstring variable is a string in which a very long string is stored. you need to identify whether a string stored in an object named stringtofind is within

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public static class StringBuilderSearching
{
  public static bool Contains(this StringBuilder haystack, string needle)
  {
    return haystack.IndexOf(needle) != -1;
  }
  public static int IndexOf(this StringBuilder haystack, string needle)
  {
    if(haystack == null || needle == null)
      throw new ArgumentNullException();
    if(needle.Length == 0)
      return 0;//empty strings are everywhere!
    if(needle.Length == 1)//can't beat just spinning through for it
    {
      char c = needle[0];
      for(int idx = 0; idx != haystack.Length; ++idx)
        if(haystack[idx] == c)
          return idx;
      return -1;
    }
    int m = 0;
    int i = 0;
    int[] T = KMPTable(needle);
    while(m + i < haystack.Length)
    {
      if(needle[i] == haystack[m + i])
      {
        if(i == needle.Length - 1)
          return m == needle.Length ? -1 : m;//match -1 = failure to find conventional in .NET
        ++i;
      }
      else
      {
        m = m + i - T[i];
        i = T[i] > -1 ? T[i] : 0;
      }
    }
    return -1;
  }      
  private static int[] KMPTable(string sought)
  {
    int[] table = new int[sought.Length];
    int pos = 2;
    int cnd = 0;
    table[0] = -1;
    table[1] = 0;
    while(pos < table.Length)
      if(sought[pos - 1] == sought[cnd])
        table[pos++] = ++cnd;
      else if(cnd > 0)
        cnd = table[cnd];
      else
        table[pos++] = 0;
    return table;
  }
}

Popularity 1/10 Helpfulness 1/10 Language csharp

Source: stackoverflow.com

Tags: c#

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Contributed on May 05 2022

What

0 Answers Avg Quality 2/10

you have the following c# code. stringbuilder sb = new stringbuilder(reallylongstring); the reallylongstring variable is a string in which a very long string is stored. you need to identify whether a string stored in an object named stringtofind is within

Comment

You can use the StringBuilder.IndexOf() method to check if the stringtofind is contained within the StringBuilder object. Here is an example of how you can use it:if (sb.IndexOf(stringtofind) >= 0)
{
    // stringtofind was found within sb
}
else
{
    // stringtofind was not found within sb
}
Alternatively, you can also use the StringBuilder.ToString() method to convert the StringBuilder object to a string and use the String.Contains() method to check if the stringtofind is contained within the string. Here is an example of how you can use it:

Popularity 1/10 Helpfulness 1/10 Language csharp

Source: Grepper

Tags: c# identify named object string

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Contributed on Jan 03 2023

Hustler

0 Answers Avg Quality 2/10

you have the following c# code. stringbuilder sb = new stringbuilder(reallylongstring); the reallylongstring variable is a string in which a very long string is stored. you need to identify whether a string stored in an object named stringtofind is within

Comment

// You can use the StringBuilder.IndexOf(string) method to find the index of the first occurrence of the stringtofind string within the sb StringBuilder object.
// 
// Here is an example of how to use this method:
int index = sb.IndexOf(stringtofind);
if (index >= 0)
{
    // stringtofind was found within sb
}
else
{
    // stringtofind was not found within sb
}

Popularity 3/10 Helpfulness 1/10 Language whatever

Source: Grepper

Tags: c# identify named object string whatever

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Contributed on Jan 04 2023

SnefDen

0 Answers Avg Quality 2/10

you have the following c# code. stringbuilder sb = new stringbuilder(reallylongstring); the reallylongstring variable is a string in which a very long string is stored. you need to identify whether a string stored in an object named stringtofind is within

Comment

if (sb.IndexOf(stringtofind) >= 0)
{
   // stringtofind was found in sb
}
else
{
   // stringtofind was not found in sb
}


//OR


if (sb.Contains(stringtofind))
{
   // stringtofind was found in sb
}
else
{
   // stringtofind was not found in sb
}

Popularity 1/10 Helpfulness 1/10 Language csharp

Source: programely.com

Tags: c# identify named object string

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Contributed on Jan 08 2023

HINDI Tech

0 Answers Avg Quality 2/10

you have the following c# code. stringbuilder sb = new stringbuilder(reallylongstring); the reallylongstring variable is a string in which a very long string is stored. you need to identify whether a string stored in an object named stringtofind is within

Comment

if (sb.ToString().Contains(stringtofind)) {
  // stringtofind is found in sb
} else {
  // stringtofind is not found in sb
}

Popularity 2/10 Helpfulness 1/10 Language csharp

Source: Grepper

Tags: c# identify named object string

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Contributed on Jan 10 2023

Muiz Ather

0 Answers Avg Quality 2/10

you have the following c# code. stringbuilder sb = new stringbuilder(reallylongstring); the reallylongstring variable is a string in which a very long string is stored. you need to identify whether a string stored in an object named stringtofind is within

Comment

There are a few different ways to check if a string stored in an object named "stringtofind" is within the StringBuilder "sb" object in C#, but one common way is to use the IndexOf method:

if (sb.ToString().IndexOf(stringtofind) != -1)
{
    // The stringtofind was found within the sb object
}

Another way is using Contains method

if (sb.ToString().Contains(stringtofind))
{
    // The stringtofind was found within the sb object
}


Both methods works the same but the way they indicate if the string is found is different.
The IndexOf method will return -1 if the string is not found, otherwise it returns the index of the first occurrence of the specified string. The Contains method returns a Boolean indicating whether the specified string occurs within this object.

In both cases, you're calling the ToString() method on the sb object, which converts it to a regular string so you can use the IndexOf or Contains method on it.

It's important to keep in mind that the IndexOf and Contains method are case-sensitive, if you want to check the string with ignoring the case, you can use IndexOf or Contains method along with String.Compare method with 'StringComparison.OrdinalIgnoreCase' option.

Popularity 2/10 Helpfulness 1/10 Language csharp

Source: Grepper

Tags: c# identify named object string

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Contributed on Jan 10 2023

Ranger

0 Answers Avg Quality 2/10

you have the following c# code. stringbuilder sb = new stringbuilder(reallylongstring); the reallylongstring variable is a string in which a very long string is stored. you need to identify whether a string stored in an object named stringtofind is within

Comment

You can use the StringBuilder.IndexOf(string) method to check if the stringtofind is within the StringBuilder object sb.

Here's an example:

string stringtofind = "findme";
int index = sb.ToString().IndexOf(stringtofind);
if (index >= 0) {
    Console.WriteLine("The string '{0}' was found in the StringBuilder at index {1}.", stringtofind, index);
} else {
    Console.WriteLine("The string '{0}' was not found in the StringBuilder.", stringtofind);
}


You can call the .ToString() Method of the stringbuilder to get the value of the stringbuilder to perform the search.

Popularity 2/10 Helpfulness 1/10 Language csharp

Source: Grepper

Tags: c# identify named object string

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Contributed on Jan 11 2023

Barkerbg001

0 Answers Avg Quality 2/10

you have the following c# code. stringbuilder sb = new stringbuilder(reallylongstring); the reallylongstring variable is a string in which a very long string is stored. you need to identify whether a string stored in an object named stringtofind is within

Comment

#Use String Class built in method ToString().Contains($ARGC*)  To find a substring 
sb.ToString().Contains(stringtofind);

Popularity 1/10 Helpfulness 1/10 Language cpp

Source: Grepper

Tags: c# c++ identify named object string

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Contributed on Jan 19 2023

Mighty Morphin Powder Strangers

0 Answers Avg Quality 2/10

you have the following c# code. stringbuilder sb = new stringbuilder(reallylongstring); the reallylongstring variable is a string in which a very long string is stored. you need to identify whether a string stored in an object named stringtofind is within

Comment

// You can use the StringBuilder.ToString() method to convert 
// the StringBuilder object to a string, and then use the 
// String.Contains() method to check if the string stored 
// in the stringtofind object is contained within the string.
// For example:

if (sb.ToString().Contains(stringtofind))
{
    // stringtofind is contained within sb
}

// You can also use the StringBuilder.IndexOf() method to check 
// the index of the first occurrence of the string stored in the 
// stringtofind object within the StringBuilder object. If the method 
// returns a value greater than -1, it means the string is found. 
// For example:

if (sb.IndexOf(stringtofind) > -1)
{
    // stringtofind is contained within sb
}

Popularity 1/10 Helpfulness 1/10 Language csharp

Source: Grepper

Tags: c# identify named object string

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Contributed on Jan 19 2023

ofroog

0 Answers Avg Quality 2/10

what is the problem 723 on leetcode

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what is the problem 723 on leetcode

Closely Related Answers

you have the following c# code. stringbuilder sb = new stringbuilder(reallylongstring); the reallylongstring variable is a string in which a very long string is stored. you need to identify whether a string stored in an object named stringtofind is within

you have the following c# code. stringbuilder sb = new stringbuilder(reallylongstring); the reallylongstring variable is a string in which a very long string is stored. you need to identify whether a string stored in an object named stringtofind is within

you have the following c# code. stringbuilder sb = new stringbuilder(reallylongstring); the reallylongstring variable is a string in which a very long string is stored. you need to identify whether a string stored in an object named stringtofind is within

you have the following c# code. stringbuilder sb = new stringbuilder(reallylongstring); the reallylongstring variable is a string in which a very long string is stored. you need to identify whether a string stored in an object named stringtofind is within

you have the following c# code. stringbuilder sb = new stringbuilder(reallylongstring); the reallylongstring variable is a string in which a very long string is stored. you need to identify whether a string stored in an object named stringtofind is within

you have the following c# code. stringbuilder sb = new stringbuilder(reallylongstring); the reallylongstring variable is a string in which a very long string is stored. you need to identify whether a string stored in an object named stringtofind is within

you have the following c# code. stringbuilder sb = new stringbuilder(reallylongstring); the reallylongstring variable is a string in which a very long string is stored. you need to identify whether a string stored in an object named stringtofind is within

you have the following c# code. stringbuilder sb = new stringbuilder(reallylongstring); the reallylongstring variable is a string in which a very long string is stored. you need to identify whether a string stored in an object named stringtofind is within

you have the following c# code. stringbuilder sb = new stringbuilder(reallylongstring); the reallylongstring variable is a string in which a very long string is stored. you need to identify whether a string stored in an object named stringtofind is within

you have the following c# code. stringbuilder sb = new stringbuilder(reallylongstring); the reallylongstring variable is a string in which a very long string is stored. you need to identify whether a string stored in an object named stringtofind is within

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