IndexOf
Medium
12.5% Acceptance
Implement the type version of Array.indexOf, indexOf<T, U>
takes an Array
T
, any
U
and returns the index of the first U
in Array
T
.
type Res = IndexOf<[1, 2, 3], 2>; // expected to be 1 type Res1 = IndexOf<[2,6, 3,8,4,1,7, 3,9], 3>; // expected to be 2 type Res2 = IndexOf<[0, 0, 0], 2>; // expected to be -1