How to get all substrings of a string in C#?

The Substring (i, len) creates a substring of length 'len' starting from index i in the given string . As you can see in the above output, it prints all the possible substrings of a given string.

How to find all occurrences of substring in a string?

finditer function . The finditer function of the regex library can help us perform the task of finding the occurrences of the substring in the target string and the start function can return the resultant index of each of them.

How to check if a string contains any of substrings in C#?

Basic Syntax for Contains() Method //YourString is the string you want to check //CheckString is the string you want to find bool result = YourString. Contains(CheckString); The function returns true if CheckString is found within YourString , and false if it is not. As simple as that!

How to find all occurrences of a substring in C?

Take a string and a substring as input and place them in the corresponding str and sub fields. Use the strlen function to determine the length of both strings. Determine if a substring is present or not using a for loop. If so, use the count variable to count how many times it is present .

How to get substrings in C#?

You can use the Substring() method to get a substring in C#. The Substring() method takes the index position to start the retrieval of the substring as a parameter. Substring() can also take an optional parameter, which is the length of strings to return.

What is the formula for all substrings of a string?

Total number of substrings = n + (n - 1) + (n - 2) + (n - 3) + (n - 4) + ……. + 2 + 1 . So now we have a formula for evaluating the number of substrings where n is the length of a given string.

How do you find the most common substring in a string?

The longest common substrings of a set of strings can be found by building a generalized suffix tree for the strings, and then finding the deepest internal nodes which have leaf nodes from all the strings in the subtree below it .

How do I check if a string contains a substring?

The includes() method You can use JavaScript's includes() method to check whether a string contains a substring. This will return true if the substring is found, or false if not.

How do you check if a string contains a substring go?

Contains() The method returns true if the substring is present, otherwise it returns false .

How to check if a string ends with a substring in C#?

To determine whether a string ends with a particular substring by using the string comparison rules of the current culture, signal your intention explicitly by calling the EndsWith(String, StringComparison) method overload with a value of CurrentCulture for its comparisonType parameter .

How do you check if a string contains a substring from a list?

One approach to check if a string contains an element from a list is to convert the string and the list into sets and then check for the intersection between the sets . If the intersection is not an empty set, it means that the string contains an element from the list.

How do you check if a string contains any of the substrings Python?

Check Python Substring in String using Count() Method You can also count the number of occurrences of a specific substring in a string, then you can use the Python count() method. If the substring is not found then “yes ” will print otherwise “no will be printed”.

How to find all possible substrings of a string in C?

To find all substrings from a given/ current string in C++, we can use a substring function that takes string s, and the length of string(n) as parameters . This function prints all the substrings up to the length of the string. for (int i = 0; i < n; i++) //this loop goes till the length of string, in th.

How to find how many times a substring occurs in a string in Python?

The Python count() function is an inbuilt function used to count the number of occurrences of a particular element appearing in the string. Python count() is a string method that returns a numeric value denoting the number of occurrences of a substring in the given input string.

How do you find all occurrences of a substring in a string in Excel?

Press Ctrl+F or go to Home > Find & Select > Find. In Find what type the text or numbers you want to find. Select Find All to run your search for all occurrences .

C# - Different Ways to Find All Substrings in a String

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Last Updated : 21 Oct, 2021

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Given a string as an input we need to find all the substrings present in the given string.

Example:

Input:geeksOutput:geeksgeeeekksgeeeekeksgeekeeksgeeksInput:abOutput:abab

Method 1: Using Substring() method

We can find all the substrings from the given string using the Substring() method. This method returns a substring from the current string. It contains two parameters where the first parameter represents the starting position of the substring which has to be retrieved and the second parameter will represent the length of the substring. Here if the first parameter is equal to the length of the string then this method will return nothing.

Syntax:

str.Substring(strindex, strlen)

where strindex is the starting index of the substring and strlen is the length of the substring.

Approach

To display

Read the string from the user.
Write the find_substrings() function to get substrings.
In find_substrings() function call Substring() method to get the substrings.

for(i = 1; i <= input_string.Length; i++){ for (j = 0; j <= input_string.Length - i; j++) { // Use Substring function Console.WriteLine(input_string.Substring(j, i)); }}

Now show the retrieved substrings.

Example:

C#

// C# program to display all Substrings

// present in the given String

using System;

class GFG{

// Function to get the substrings

static void find_substrings(string input_string)

{

int j = 0;

int i = 0;

for(i = 1; i <= input_string.Length; i++)

{

for(j = 0; j <= input_string.Length - i; j++)

{

// Using Substring() function

Console.WriteLine(input_string.Substring(j, i));

C#

// C# program to display all Substrings

// present in the given String

using System;

class GFG{

// Function to print all substrings

// from the given string

static void find_Substring(string inputstr, int n)

{

// Choose starting point

for(int l = 1; l <= n; l++)

{

// Choose ending point

for(int i = 0; i <= n - l; i++)

{

// Display the substrings

int q = i + l - 1;

for(int j = i; j <= q; j++)

Console.Write(inputstr[j]);

Console.WriteLine();

}

// Driver code

static public void Main ()

{

string inputstr = "Geeks";

// Calling function

find_Substring(inputstr, inputstr.Length);

}

Output:

GeeksGeeeekksGeeeekeksGeekeeksGeeks

gottumukkala_sivanagulu

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C# | Get the number of strings in StringCollection

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