Inverting_a_Hash.md

CodeWars Python Solutions

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Inverting a Hash

Summary

Given a Hash made up of keys and values, invert the hash by swapping them.

Examples

Given:

  { 'a' : 1,
    'b' : 2,
    'c' : 3 }

Return:

  { 1 : 'a',
    2 : 'b',
    3 : 'c' }



Given:

  { 'foo'   : 'bar',
    'hello' : 'world' }

Return:

  { 'bar'   : 'foo',
    'world' : 'hello' }

Notes

• Keys and values may be of any type appropriate for use as a key.
• All hashes provided as input will have unique values, so the inversion is involutive. In other words, do not worry about identical values stored under different keys.

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Given Code

def invert_hash(dictionary):
    pass

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Solution

def invert_hash(dictionary):
    return {v:k for k,v in dictionary.items()}

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