JavaScript: Move last three character to the start of a specified string

JavaScript Basic: Exercise-62 with Solution

Move Last 3 Characters to Start of String

Write a JavaScript program to move the last three characters to the start of a given string. The string length must be greater than or equal to three.

This JavaScript program takes a string of length at least three and rearranges it by moving the last three characters to the beginning of the string.

Visual Presentation:

Sample Solution:

JavaScript Code:

// Define a function named right_three with parameter str
function right_three(str) {
    // Check if the length of the string is greater than 1
    if (str.length > 1) {
        // Return the last three characters concatenated with the substring excluding the last three characters
        return str.slice(-3) + str.slice(0, -3);
    }
    // Return the string as is if its length is not greater than 1
    return str;
}

// Call the function with sample arguments and log the results to the console
console.log(right_three("Python"));
console.log(right_three("JavaScript"));
console.log(right_three("Hi")); 

Output:

honPyt
iptJavaScr
Hi

Live Demo:

See the Pen JavaScript - Move last three character to the start of a specified string - basic-ex-62 by w3resource (@w3resource) on CodePen.

Flowchart:

ES6 Version:

 // Define a function named right_three with parameter str
const right_three = (str) => {
    // Check if the length of str is greater than 1
    if (str.length > 1) {
        // Use slice to get the last three characters and concatenate with the substring excluding the last three characters
        return str.slice(-3) + str.slice(0, -3);
    }
    // Return str if its length is not greater than 1
    return str;
};

// Call the function with sample arguments and log the results to the console
console.log(right_three("Python"));
console.log(right_three("JavaScript"));
console.log(right_three("Hi"));

For more Practice: Solve these Related Problems:

• Write a JavaScript program that moves the last three characters of a string to its beginning if the string’s length is at least three.
• Write a JavaScript function that reorders a string by slicing the last three characters and prepending them to the remainder.
• Write a JavaScript program that checks a string's length and then creates a new string by moving its last three characters to the front.

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