The first line gives the count n, and the second line gives n integers separated by spaces. For each number print how many decimal digits it has, one per line. The minus sign is not a digit, and 0 has one digit. For example 0 → 1, -42 → 2, 1000 → 4.
Input
1 ≤ n ≤ 1,000, -1,000,000,000,000,000 ≤ number ≤ 1,000,000,000,000,000 (±10^15)
Output
n lines, each a digit count
Example 1 · stdin
6
0 7 -42 100 -1000 999
stdout
1
1
2
3
4
3
main.py
Error List00F8 ↓ · ⇧F8 ↑
Input (stdin)
When you run, these lines are fed to input()/stdin in order (the program doesn't stop to ask).
$ Ready
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In other languagesShow solutions by language · 8 languages
A divide-by-10 counting loop must count first and test after, so that 0 counts as one digit: do { count++; x /= 10; } while (x != 0);. Testing first, as in while (x != 0), never runs for 0 and gives zero digits. Languages with do-while: C, C++, Java, C#, JS, TS. Python and Craykon have none, so build 'at least once' with while True: … if x == 0: break (Craykon while (true) … break;). The negative-number trap: integer / in C, C++, Java and C#, and Craykon Mathf.Quot, truncate toward zero (-42 → -4 → 0), so negatives reach 0 on their own, but Python // floors, so -5 // 10 == -1 and -1 // 10 == -1 forever — take abs(x) first. In JS/TS Math.floor(x / 10) has the same problem, so use Math.trunc. Beware the shortcuts too: string length (str(x), String(x).length) counts the '-', and floor(log10(x)) + 1 fails for 0, and for 999,999,999,999,999 log10 rounds to 15.0 and gives 16. Values exceed 2.1 billion, so C, C++, Java and C# read them as long (long long).
Pythonmain.py · 11 lines
n = int(input())for x in map(int, input().split()): x = abs(x) # 파이썬 // 는 내림이라 -5 // 10 == -1: 음수는 0에 닿지 않는다 count = 0 # 파이썬에는 do-while이 없다: while True + break로 "적어도 한 번" while True: count += 1 x //= 10 if x == 0: break print(count)
JavaScriptmain.js · 11 lines
const [n, ...xs] = require("fs").readFileSync(0, "utf8").trim().split(/\s+/).map(Number);const out = xs.map((x) => { let count = 0; // do-while: 0도 한 자리로 센다(몸통이 적어도 한 번 돈다) do { count++; x = Math.trunc(x / 10); // Math.floor는 음수에서 -1에 멈춘다 } while (x !== 0); return count;});console.log(out.join("\n"));
TypeScriptmain.ts · 12 lines
import { readFileSync } from "node:fs";const [n, ...xs]: number[] = readFileSync(0, "utf8").trim().split(/\s+/).map(Number);const out: number[] = xs.map((x) => { let count = 0; // do-while: 0도 한 자리로 센다(몸통이 적어도 한 번 돈다) do { count++; x = Math.trunc(x / 10); // Math.floor는 음수에서 -1에 멈춘다 } while (x !== 0); return count;});console.log(out.join("\n"));
JavaMain.java · 23 lines
import java.io.BufferedReader;import java.io.InputStreamReader;import java.util.StringTokenizer;public class Main { public static void main(String[] args) throws Exception { BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); int n = Integer.parseInt(br.readLine().trim()); StringTokenizer st = new StringTokenizer(br.readLine()); StringBuilder out = new StringBuilder(); for (int i = 0; i < n; i++) { long x = Long.parseLong(st.nextToken()); int count = 0; // do-while: 0도 한 자리로 센다. / 는 0 쪽으로 버려서 음수도 0에 닿는다 do { count++; x /= 10; } while (x != 0); out.append(count).append('\n'); } System.out.print(out); }}
C#Main.cs · 21 lines
using System;class Program{ static void Main() { Console.ReadLine(); foreach (string s in Console.ReadLine().Split(' ', StringSplitOptions.RemoveEmptyEntries)) { long x = long.Parse(s); int count = 0; // do-while: 0도 한 자리로 센다. / 는 0 쪽으로 버려서 음수도 0에 닿는다 do { count++; x /= 10; } while (x != 0); Console.WriteLine(count); } }}
C++main.cpp · 19 lines
#include <iostream>int main() { std::ios::sync_with_stdio(false); std::cin.tie(nullptr); int n; long long x; std::cin >> n; for (int i = 0; i < n; i++) { std::cin >> x; int count = 0; // do-while: 0도 한 자리로 센다. / 는 0 쪽으로 버려서 음수도 0에 닿는다 do { count++; x /= 10; } while (x != 0); std::cout << count << '\n'; }}
Cmain.c · 18 lines
#include <stdio.h>int main(void) { int n; long long x; scanf("%d", &n); for (int i = 0; i < n; i++) { scanf("%lld", &x); int count = 0; /* do-while: 0도 한 자리로 센다. / 는 0 쪽으로 버려서 음수도 0에 닿는다 */ do { count++; x /= 10; } while (x != 0); printf("%d\n", count); } return 0;}
Craykonmain.cray · 17 lines
n = Console.ReadLine().ToNumber();수들 = Console.ReadNumbers();foreach (x in 수들){ 개수 = 0; // 크레이콘에는 do-while이 없다: 동안 (참) + 그만으로 "적어도 한 번" while (true) { 개수++; x = Mathf.Quot(x, 10); // 0 쪽으로 버려서 음수도 0에 닿는다 if (x == 0) { break; } } Console.WriteLine(개수);}