ALG-E004EasyArrays
First Matching Position
Return the zero-based index of the first occurrence of target. Return -1 if target is absent.
Contract
input numbers: integer[]
input target: integer
return integer
Examples
Example 1
numbers = [4, 7, 4, 9]
target = 4
→ 0
Example 2
numbers = [2, 3]
target = 9
→ -1
5 judge tests (2 shown above). Target complexity: O(n).