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rakibsarowar / repository
Embark on the JavaScript Odyssey: A Quest for Solutions! 🚀 Explore my concise notes and solutions as I navigate the world of JavaScript problem-solving. Join me in unraveling coding challenges and honing skills in this exciting journey! #JavaScript #CodingOdyssey 🌐💻
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Problem list:
Problem: Write a function that reverses a given string.
function reverseString(str) {
return str.split('').reverse().join('');
}
// Example usage
console.log(reverseString('hello')); // Output: 'olleh'
Way 2:
const reverseString = str => {
return str.split("").reverse().join("");
}
console.log(reverseString("rakib")); // Output: 'bikar'
Way 3:
const reverseString = str => str.split("").reverse().join("");
console.log(reverseString("rakib")); // Output: 'bikar'
Problem: Write a function that finds the largest number in an array.
function findLargestNumber(arr) {
return Math.max(...arr);
}
// Example usage
console.log(findLargestNumber([3, 9, 1, 25, 7])); // Output: 25
findLargestNumber = arr => Math.max(...arr)
console.log(findLargestNumber([3,4,5,6,69]))
Problem: Create a function that checks whether a string is a palindrome.
Way 1:
function isPalindrome (str) {
const reverse = str.split('').reverse().join("");
return str === reverse
}
console.log(isPalindrome("rakib"))
Way 02:
isPalindrome = str => {
const reverse = str.split('').reverse().join("")
return str === reverse
}
console.log(isPalindrome("lol"))
// Output: false
Problem: Write a function that counts the number of words in a given sentence.
function count (sentence) {
const words = sentence.split("").filter(word => word.trim() !== "")
return words.length
}
console.log(count("i love you"))
const count = sentence => {
const words = sentence.split("").filter(word=> word.trim() !=="")
return words.length
}
console.log(count("i love you"))
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CHEGEBB /
🚀 Embarking on my JavaScript,VueJs,ReactJs,Next js and Typescript,Node js mastery journey, svelte from fundamentals to advanced concepts. 💻🌟 Join me as I delve deep into the world of these technologies and unlock their limitless potential! 🔓🎉
33/100 healthProblem: Write a function that can remove duplicates from an array.
//Way01:
function removeDuplicates(arr) {
return [...new Set(arr)];
}
// Example usage:
const array = [1, 2, 2, 3, 4, 4, 5];
console.log(removeDuplicates(array)); // Output: [1, 2, 3, 4, 5]
//Way02:
const array = [1, 2, 2, 3, 4, 4, 5];
removeDuplicates = array => [...new Set(array)]
console.log(removeDuplicates(array)); // Output: [1, 2, 3, 4, 5]
A = [1,2,2,3,,4,5,5]
B = [6,7,8,9]
const AB=A.concat(B)
const newArrey = [...new Set(AB)]
console.log(newArrey)
let a = 5;
let b = a++;
console.log(a, b);
Solution:
let a = 5; - It declares a variable a and assigns it the value 5. let b = a++; - This line has two parts:
• a++ is a post-increment operation. a++ means that the current value of a (which is 5) is assigned to b, and then a is incremented by 1.
• So, after this line executes, b holds the value 5 because the current value of a (before incrementing) is assigned to b, and a gets incremented to 6. console.log(a, b); - This prints the values of a and b to the console.
• a now holds the value 6 because it was incremented after the assignment to b.
• b holds the original value of a, which is 5.
Therefore, when you execute console.log(a, b);, it will output 6, 5.let a = 5;
let b = a; // Assign the current value of 'a' to 'b'
a = a + 1; // Increment 'a' by 1