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Introduction to Python

  • Profound Academy

    • Status
      • 1
        Input and Output
      • 2
        Variables and Integer Arithmetic
      • 3
        Conditional Operators
      • 4
        Advanced Conditions - Nesting
      • 5
        Types and Variables
      • 6
        Strings
      • 7
        Lists
      • 8
        For Loops
      • 9
        While Loops
      • 10
        continue, break, while...else
      • 11
        String and List methods
      • 12
        Nested Loops
      • 13
        List Comprehension
      • 14
        Tuples and Sets
      • 15
        dict
      • 16
        Functions
      • 17
        Functions 2
      • 18
        Lambda and higher-order functions
      • 19
        Files

  • Sort pairs 2

    Given a list of pairs, you are asked to sort them in increasing order based on the second element. So, when looking at the final list of the pairs, the second element should be a non-decreasing sequence.
    The first line of the input contains a single integer n - the number of pairs. The next n lines contain 2 integers separated by a space.
    The program should print n lines containing the resulting list. Each line should have two integers separated by a space.
    Input
    Output
    3 10 4 12 1 6 7
    12 1 10 4 6 7
     
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