Kata

Given a random string consisting of numbers, letters, symbols, you need to sum up the numbers in the string.

Note:

• Consecutive integers should be treated as a single number. eg, 2015 should be treated as a single number 2015, NOT four numbers
• All the numbers should be treaded as positive integer. eg, 11-14 should be treated as two numbers 11 and 14. Same as 3.14, should be treated as two numbers 3 and 14
• If no number was given in the string, it should return 0

Example:

str = "In 2015, I want to know how much does iPhone 6+ cost?"

The numbers are 2015, 6

Sum is 2021.