If you want to replace one item with another, one of the simplest ways to do this is by using the replace() function in any programming language. For example, in JavaScript you can write:

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let myString = 'Hello, world!';
let newString = myString.replace('world', 'Athena');
//newString = 'Hello, Athena!'

The replace() function will take two arguments: the first is whatever text string you want to search/replace, and the second is the replacement string. In the example above, the replace() function searches for the string world and replaces it with the string Athena within themyString variable.

For more information about the replace() function, check out this MDN web docs page.

In JavaScript, you can use a combination of the indexOf() and lastIndexOf() methods to find the first unique letter in a string.

As a simple example, you can use the following code:

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//Store the string
let str = 'shecodes';

//Loop through the string and check if each letter appears only once
for(let i = 0; i < str.length; i++) { 
  //If the letter appears only once, return it
  if(str.indexOf(str[i]) === str.lastIndexOf(str[i])) {
    console.log(str[i]); // Outputs "s"
    break;
  } 
}

You can make a capitalized string in the following ways, depending on the programming language you are using:

JavaScript:

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let str = 'hello world'
let capitalizedStr = str.slice(0,1).toUpperCase() + str.slice(1)
console.log(capitalizedStr) // Hello World

Source: MDN Web Docs

Python:

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string = 'hello world'
capitalizedStr = string.capitalize() 
print(capitalizedStr) # Hello world

Source: python.org

String in JavaScript is a data type that allows the user to store and manipulate text. Strings are enclosed inside either single or double quotes and are used to store words and sentences. For example, let myName = "SheCodes Athena AI" creates a string in JavaScript.

In Python, you can convert an integer to a string using the str() function. For example, if you have a = 5 and you want to convert it to a string, you simply use a = str(5).

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a = 5
a = str(5)
print(a)

This would output '5'. You can also do this by casting the integer as a string like a = '5'.

In Javascript, you can make a prompt case-insensitive by using the String.prototype.toLowerCase method. For example:

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let input = prompt("Please enter value");
let cInput = input.toLowerCase();

The first line asks for user input and stores the result in input, then the second line stores the user answer in cInput, after being changed from any case type to lowerCase.

More information on the toLowerCase method can be found here: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/toLowerCase

The most popular string methods are:

1. length(): returns the length of a given string
2. charAt(): returns the specific character at a given index
3. indexOf(): returns the index of the first occurrence of the specified character
4. lastIndexOf(): returns the index of the last occurrence of the specified character
5. replace(): replaces all occurrences of a given character with a specified character
6. toUpperCase(): returns the string in uppercase
7. toLowerCase(): returns the string in lower case
8. trim(): removes all leading and trailing white space
9. valueOf(): returns the primitive value of a string
10. split(): splits a string into an array of strings based on a given delimiter.

References:

• VSCode Documentation
• Java Tutorials Point

The easiest way to remove a character from a string in most programming languages is using the replace() function/method.

For example, in JavaScript:

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var str = "Hello World!";
var res = str.replace("H", ""); // Output: "ello World!"

In JavaScript, an array of strings can be created using the Array constructor. For example, the following code creates an array containing the strings "Pineapple", "Banana", and "Apple":

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var fruits = new Array("Pineapple", "Banana", "Apple");

In JavaScript, you can use the .toLowerCase() string method to convert a string to lowercase. For example:

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let message = "SheCodes ROCKS!";
let result = message.toLowerCase(); // result will be "shecodes rocks!"

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city = 'Toulouse'
country = 'France'
print("I am from %s, in %s" %(city, country))