Pagination

Easy Real-World Scenarios

Return the items for a given page and page size — the logic behind API pagination and infinite scroll. Items 1..10, page 2, page size 3.

Sample input

items = 1..10, page = 2, pageSize = 3

Sample output

4 5 6

Solution

items = list(range(1, 11))
page = 2
page_size = 3
start = (page - 1) * page_size
result = items[start:start + page_size]
print(*result)

const items = Array.from({ length: 10 }, (_, i) => i + 1);
const page = 2, pageSize = 3;
const start = (page - 1) * pageSize;
const result = items.slice(start, start + pageSize);
console.log(result.join(" "));

import java.util.stream.Collectors;
import java.util.stream.IntStream;

public class Main {
    public static void main(String[] args) {
        int[] items = IntStream.rangeClosed(1, 10).toArray();
        int page = 2, pageSize = 3;
        int start = (page - 1) * pageSize;
        System.out.println(IntStream.range(start, Math.min(start + pageSize, items.length))
            .map(i -> items[i]).mapToObj(String::valueOf).collect(Collectors.joining(" ")));
    }
}

fun main() {
    val items = (1..10).toList()
    val page = 2
    val pageSize = 3
    val start = (page - 1) * pageSize
    val result = items.subList(start, minOf(start + pageSize, items.size))
    println(result.joinToString(" "))
}

let items = Array(1...10)
let page = 2, pageSize = 3
let start = (page - 1) * pageSize
let end = min(start + pageSize, items.count)
let result = Array(items[start..<end])
print(result.map(String.init).joined(separator: " "))

void main() {
  final items = List.generate(10, (i) => i + 1);
  const page = 2, pageSize = 3;
  final start = (page - 1) * pageSize;
  final end = (start + pageSize).clamp(0, items.length);
  final result = items.sublist(start, end);
  print(result.join(' '));
}

#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;

int main() {
    vector<int> items;
    for (int i = 1; i <= 10; i++) items.push_back(i);
    int page = 2, pageSize = 3;
    int start = (page - 1) * pageSize;
    int end = min(start + pageSize, (int) items.size());
    bool first = true;
    for (int i = start; i < end; i++) {
        if (!first) cout << " ";
        cout << items[i];
        first = false;
    }
    cout << endl;
    return 0;
}

#include <stdio.h>

int main() {
    int items[10];
    for (int i = 0; i < 10; i++) items[i] = i + 1;
    int page = 2, pageSize = 3;
    int start = (page - 1) * pageSize;
    int end = start + pageSize;
    if (end > 10) end = 10;
    int first = 1;
    for (int i = start; i < end; i++) {
        if (!first) printf(" ");
        printf("%d", items[i]);
        first = 0;
    }
    printf("\n");
    return 0;
}