When it comes to computer algorithms, loops are essential. And with loop, comes a fundamental property that must be valid for a successful algorithm design; this property is called Loop Invariant. Take a look at the following pseudo-code for insertion sort:

Ever wonder what programming languages do top tech companies use in their programs and software? No need to wonder. Because here is the list.


  1. Python
  2. C++
  3. Java
  4. Go
  5. JavaScript


  1. C++
  2. JavaScript
  3. Java
  4. Python
  5. Objective-C


  1. C#
  2. TypeScript
  3. JavaScript
  4. C++
  5. PowerShell


  1. Scala
  2. Java
  3. JavaScript
  4. C
  5. Lua


  1. Java
  2. Python
  3. JavaScript
  4. Objective-C
  5. Scala


  1. Java
  2. JavaScript
  3. Python
  4. Go
  5. Ruby

Although an expert command over one particular language is enough to start a promising career, sometimes an extra edge over another programming language or frameworks can go a long way. I hope this list helps to get an idea of what programming languages are most used in the top companies these days.

Source: GitHub.


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