easyPythoncollections
What will this output?
a = {1, 2, 3}
b = {3, 4}
print(a ^ b)1,636 easy coding interview questions
Easy questions check that the basics are actually automatic: syntax, defaults, and the behaviour you rely on without thinking.
Good for a first pass through a new language, or a warm-up the morning of an interview.
Expect single-concept snippets: one operator, one method, one default. If an easy question catches you out, that is the gap worth closing first.
Easy questions by language
Sample easy questions
Eighteen real easy questions from across the library, code snippet included. The answer options and explanations come after you attempt them.
easyJavaScript== vs equals
What is the result?
let arr = ["a", "b", "c"];
arr.reverse();
console.log(arr);easyJavaScriptarray map filter reduce
What will this print?
let arr = ["a", "b"];
arr.push("c");
console.log(arr);easyHTMLvalidation attrs required pattern
What does the following code create?
<input type="password" name="pass">easyJavaScriptprimitives and typeof
What does the following code return?
typeof null === "object"easyJavaScriptarray map filter reduce
What is the output?
let arr = [[1, 2], [3, 4, 5]];
console.log(arr.flat());easyPythonlist ops and slicing
What will be the output?
x = [i**2 for i in range(3)]
print(x)easyHTMLcontent models
What does the following code create?
<button type="button">Click Me</button>easyJavaScriptthis in callbacks vs methods
What will this code output?
const obj = {
name: "Hello",
sayHello: function() {
console.log(this.name);
}
};
obj.sayHello();easyPythonenum
What is the output?
from enum import Enum, auto
class Color(Enum):
RED = auto()
BLUE = auto()
print(Color.RED.value, Color.BLUE.value)easyJavaScripttemplate literals
What is the output?
let str = "Hello World";
console.log(str.toUpperCase());easyJavaScriptarray map filter reduce
What is the output?
let numbers = [1, 2, 3, 4];
let result = numbers.find(n => n > 1);
console.log(result);easyJavaScriptarray map filter reduce
What does the following code output?
let fruits = ["apple", "banana", "orange"];
console.log(fruits.indexOf("banana"));easyJavaScript== vs equals
What is the result?
let add = (x, y) => x + y;
console.log(add(5, 10));easyHTMLparagraphs
What does the following HTML code create?
<p>This is <em>emphasized</em> text.</p>easyHTMLparagraphs
What does the following HTML code create?
<p>This is <b>bold</b> text.</p>easyHTMLcontent models
What does the following code do?
<ul>\n <li>Item 1</li>\n <li>Item 2</li>\n</ul>easyJavaScriptarray map filter reduce
What is the output?
let numbers = [1, 2, 3, 4];
let sum = numbers.reduce((acc, val) => acc + val);
console.log(sum);