number-to-digit-tiers

Number to digit tiers

Create a function that takes a number and returns an array of strings containing the number cut off at each digit.

Examples

• 420 should return ["4", "42", "420"]
• 2017 should return ["2", "20", "201", "2017"]
• 2010 should return ["2", "20", "201", "2010"]
• 4020 should return ["4", "40", "402", "4020"]
• 80200 should return ["8", "80", "802", "8020", "80200"]

PS: The input is guaranteed to be an integer in the range [0, 1000000]