JavaScriptEasyArrays10 min
Split an array into chunks
Split an integer array into consecutive chunks of size k; the final chunk may be shorter. All input is valid JSON satisfying the constraints; do not mutate the meaning of values through type coercion. Interviewers use this problem to assess advance through the array by the chunk size.
Input
A JSON object {"array": [...], "k": integer}.
Output
Print one compact JSON value: an array of arrays.
Constraints
0 <= array length <= 10000; 1 <= k <= 10000; integer elements between -1000000 and 1000000.
Example
Input
{"array":[1,2,3,4,5],"k":2}Output
[[1,2],[3,4],[5]]
Example 2 input
{"array":[1,2,3],"k":10}Output
[[1,2,3]]
Boundary case: A chunk size larger than the array produces one chunk
Public test cases (2)
Input
{"array":[1,2,3,4,5],"k":2}Expected output
[[1,2],[3,4],[5]]
Input
{"array":[1,2],"k":1}Expected output
[[1],[2]]
Hints (2)
- Slice at offsets that are multiples of k
- A chunk size larger than the array produces one chunk
Target complexity: time O(n) · space O(n)