{"ref":"master","ref_type":"branch","master_branch":"master","description":"Write a method to replace all spaces in a string with '%20'.\n\nThis example is taken from the book 'Cracking the coding interview' by\nGayle Laakmann McDowell (http://www.careercup.com)\n\nInput: \"Mr John Smith\", 13\nOutut: \"Mr%20John%20Smith\"","pusher_type":"user"}