hacker-earth-thoughtworks-hire(Thoughtworks)

Introduction：

1、Thoughtworks

2、Problem from ThoughtWorks Hiring Challenge on HackerEarth

Thoughtworks ♂

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Problem from ThoughtWorks Hiring Challenge on HackerEarth ♂

　　Problem Link

　　Given an array of numbers, output the answer to Q queries:

　　Each query if of the form L, R, X — Find the number of occurences of in the range such that XOR is minimum for any in

　　1 <= N <= 10^6

　　1 <= X, a[i] <= 10^9

　　1 <= l <= r <= N

Related questions

The salaries and earnings of hackers for hire vary significantly depending on whether they operate legally (ethical/"white hat" hackers) or illegally (malicious/"black hat" hackers). Below is a structured overview:

Ethical Hackers (Legal)

Legitimate cybersecurity professionals are in high demand. Salaries depend on role, experience, certifications, and location.

United States

Key Certifications: CEH, OSCP, CISSP, or CISM can boost earnings by 10–30%.

Other Regions

• India: 10,000 – 50,000 annually (entry to senior roles).
• Europe: €50,000 – €120,000 (Germany, UK).
• Middle East/Singapore: 80,000 – 180,000 (tax-free benefits in some areas).

Freelancers/Contractors often charge $100–300/hour for specialized tasks (e.g., penetration testing, vulnerability assessments).

Black Hat Hackers (Illegal)

Illegal hacking is risky and unregulated, with earnings based on project complexity and anonymity. Examples include:

• Phishing campaigns: 1,000 – 5,000.
• Ransomware attacks: 50,000 – 500,000+ (split with affiliates).
• Data theft: 10,000 – 200,000 (e.g., credit card data, corporate secrets).

Risks: Severe legal penalties (fines, imprisonment), ethical consequences, and lack of recourse in disputes.

Factors Influencing Salaries

1. Certifications: OSCP/CEH holders earn ~20% more.
2. Industry: Finance/government sectors pay premiums.
3. Location: High-cost areas (e.g., Silicon Valley) offer higher salaries.
4. Remote Work: Global opportunities but possible pay adjustments based on employer location.

Key Takeaways

• Ethical hacking offers stable, high-paying careers with growing demand.
• Black hat hacking is illegal, dangerous, and unsustainable long-term.
• Always prioritize legal pathways (e.g., cybersecurity certifications, bug bounty programs).

For more details on ethical hacking careers, explore certifications like OSCP or CISSP and platforms like HackerOne or Bugcrowd for freelance opportunities.