simple-fun-number-52-pair-of-shoes

Simple Fun #52: Pair Of Shoes

Task

Yesterday you found some shoes in your room. Each shoe is described by two values:

type indicates if it's a left or a right shoe;
size is the size of the shoe.

Your task is to check whether it is possible to pair the shoes you found in such a way that each pair consists of a right and a left shoe of an equal size.

Example

For:

shoes = [[0, 21], 
         [1, 23], 
         [1, 21], 
         [0, 23]]

the output should be true;

For:

shoes = [[0, 21], 
         [1, 23], 
         [1, 21], 
         [1, 23]]

the output should be false.

Input/Output

• [input] 2D integer array shoes
  Array of shoes. Each shoe is given in the format [type, size], where type is either 0 or 1 for left and right respectively, and size is a positive integer.

  Constraints: 2 ≤ shoes.length ≤ 50, 1 ≤ shoes[i][1] ≤ 100.

• [output] a boolean value

  true if it is possible to pair the shoes, false otherwise.