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Interview CheatSheet

Here’s a cheatsheet for technical interview preparation with code snippets in JavaScript:

1. Clear Communication​

// Organize thoughts before speaking
console.log("Let's first define the input and expected output.");

2. Request More Examples​

// Ask for more examples or edge cases
console.log("Can you provide an example with an edge case, like an empty array?");

3. Discuss Time & Space Complexity​

// Discuss time complexity
console.log("This solution has a time complexity of O(n log n) because we sort the array.");

4. Validate with Test Cases​

// Run test cases after coding
const input = [1, 2, 3];
const output = myFunction(input);
console.assert(output === expectedOutput, `Test failed: ${output}`);

5. Handle Ambiguity in Outputs​

// Clarify if multiple solutions are acceptable
console.log("Should I return one solution, or multiple possible answers?");

6. Align on Input Format​

// Clarify input format
console.log("Just to confirm, the input graph will be an adjacency list?");

7. Improve Code Readability​

// Add whitespace for clarity
function add(a, b) {
    let result = a + b; // Adds a and b
    return result;
}

8. Add Small Annotations​

// Add comments for clarity
// Check if the array is empty
if (!arr.length) return [];

9. Use Type Annotations​

// Type annotations for clarity
/**
 * Adds two numbers
 * @param {number} a
 * @param {number} b
 * @returns {number}
 */
function add(a, b) {
    return a + b;
}