Longest Common Prefix
Easy 20 XPStrings
Commonly asked at Amazon, Google, Adobe
Read a line of words and print the longest prefix that all of them share. If there is none, print -1.
- Input
- One line of space-separated lowercase words.
- Output
- The common prefix, or -1.
Sample 1
Input
flower flow flight
Output
fl
Sample 2
Input
dog racecar car
Output
-1
Read input with input() (no prompt message) and print only the answer. Run tries the Input box; Submit checks all test cases.
Output Loading Python (first time takes a few seconds)
Press Run to see the result here.The solution unlocks after 3 submissions.