#493Easy#27 in Cognizant's list· asked at 12 companies
Fibonacci Number
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What we know
Example 1
Input: n = 2 Output: 1
Example 2
Input: n = 3 Output: 2
Example 3
Input: n = 4 Output: 3
Constraints
- •
0 <= n <= 30 - •
The answer fits in a 32-bit signed integer.