Same signature as v2, but now n may be larger than the number of lines. If n > lines.length simply return all the lines (don't crash, don't pad). For this version assume n ≥ 0. If n is 0, or there are no lines, the result is the empty string.
Function signature:
head(lines: string[], n: number): string
Example:
Input: lines = ["alpha", "beta", "gamma"], n = 10 Output: "alpha\nbeta\ngamma" When printed: alpha beta gamma
TypeScript's
slice already handles the over-cap case. lines.slice(0, n) with n bigger than lines.length just returns all elements — no extra logic needed.
The full solution is identical to v2:
class Solution {
head(lines: string[], n: number): string {
return lines.slice(0, n).join("\n");
}
}
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