行和与列和
第一行给出行数 r 和列数 c，接下来 r 行每行 c 个整数。
输出第一行为每一行（横）的和共 r 个（从上到下），第二行为每一列（竖）的和共 c 个（从左到右），用一个空格隔开。
- 输入
- 1 ≤ r, c ≤ 50，-1000 ≤ 每个整数 ≤ 1000
- 输出
- 两行：r 个行和，c 个列和
2 3 1 2 3 4 5 6
6 15 5 7 9
错误列表00F8 ↓ · ⇧F8 ↑
输入(stdin)
运行时这些行会依次作为 input()/标准输入传入(运行中不会等待输入)。
$ 就绪
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其他语言怎么写？查看各语言题解 · 8 种语言题解
行和只要把一行加起来，列和则是外层循环为列（j）、内层为行（i）。
把 r 和 c 写反只有正方形才对，所以一定要用 2×3 这样的长方形测试。
建二维列表：Python 的 [[0] * c] * r 会让 r 行指向同一行，要写 [[0] * c for _ in range(r)]。
C 用 int g[50][50]，C++ 用 vector<vector<int>>，C# 有 int[,]（元素写 g[i, j]）和 int[][] 两种，Java 用 int[r][c]。
Craykon 用 grid.添加(控制台.读数字()) 一行行放进去，用 grid[i][j] 读取。
r, c = map(int, input().split())grid = [list(map(int, input().split())) for _ in range(r)]row_sums = [sum(row) for row in grid]col_sums = [sum(grid[i][j] for i in range(r)) for j in range(c)]print(*row_sums)print(*col_sums)const lines = require("fs").readFileSync(0, "utf8").trim().split("\n");const [r, c] = lines[0].trim().split(/\s+/).map(Number);const grid = lines.slice(1, r + 1).map((line) => line.trim().split(/\s+/).map(Number));const rowSums = grid.map((row) => row.reduce((s, x) => s + x, 0));const colSums = new Array(c).fill(0);for (let i = 0; i < r; i++) { for (let j = 0; j < c; j++) colSums[j] += grid[i][j];}console.log(rowSums.join(" "));console.log(colSums.join(" "));import { readFileSync } from "node:fs";const lines: string[] = readFileSync(0, "utf8").trim().split("\n");const [r, c]: number[] = lines[0].trim().split(/\s+/).map(Number);const grid: number[][] = lines.slice(1, r + 1).map((line) => line.trim().split(/\s+/).map(Number));const rowSums: number[] = grid.map((row) => row.reduce((s, x) => s + x, 0));const colSums: number[] = new Array<number>(c).fill(0);for (let i = 0; i < r; i++) { for (let j = 0; j < c; j++) colSums[j] += grid[i][j];}console.log(rowSums.join(" "));console.log(colSums.join(" "));import java.util.Scanner;import java.util.StringJoiner; public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int r = sc.nextInt(), c = sc.nextInt(); int[] rowSums = new int[r]; int[] colSums = new int[c]; for (int i = 0; i < r; i++) { for (int j = 0; j < c; j++) { int x = sc.nextInt(); rowSums[i] += x; colSums[j] += x; } } StringJoiner rows = new StringJoiner(" "); for (int s : rowSums) rows.add(String.valueOf(s)); StringJoiner cols = new StringJoiner(" "); for (int s : colSums) cols.add(String.valueOf(s)); System.out.println(rows); System.out.println(cols); }}using System;using System.Linq; class Program{ static void Main() { int[] rc = Console.ReadLine().Split(' ', StringSplitOptions.RemoveEmptyEntries).Select(int.Parse).ToArray(); int r = rc[0], c = rc[1]; int[,] grid = new int[r, c]; for (int i = 0; i < r; i++) { int[] row = Console.ReadLine().Split(' ', StringSplitOptions.RemoveEmptyEntries).Select(int.Parse).ToArray(); for (int j = 0; j < c; j++) grid[i, j] = row[j]; } var rowSums = Enumerable.Range(0, r).Select(i => Enumerable.Range(0, c).Sum(j => grid[i, j])); var colSums = Enumerable.Range(0, c).Select(j => Enumerable.Range(0, r).Sum(i => grid[i, j])); Console.WriteLine(string.Join(" ", rowSums)); Console.WriteLine(string.Join(" ", colSums)); }}#include <iostream>#include <vector> int main() { int r, c; std::cin >> r >> c; std::vector<std::vector<int>> grid(r, std::vector<int>(c)); for (auto& row : grid) for (int& x : row) std::cin >> x; for (int i = 0; i < r; i++) { int sum = 0; for (int j = 0; j < c; j++) sum += grid[i][j]; std::cout << (i ? " " : "") << sum; } std::cout << "\n"; for (int j = 0; j < c; j++) { int sum = 0; for (int i = 0; i < r; i++) sum += grid[i][j]; std::cout << (j ? " " : "") << sum; } std::cout << "\n";}#include <stdio.h> int main(void) { int r, c, grid[50][50]; scanf("%d %d", &r, &c); for (int i = 0; i < r; i++) for (int j = 0; j < c; j++) scanf("%d", &grid[i][j]); for (int i = 0; i < r; i++) { int sum = 0; for (int j = 0; j < c; j++) sum += grid[i][j]; printf(i ? " %d" : "%d", sum); } putchar('\n'); for (int j = 0; j < c; j++) { int sum = 0; for (int i = 0; i < r; i++) sum += grid[i][j]; printf(j ? " %d" : "%d", sum); } putchar('\n'); return 0;}rc = 控制台.读数字();r = rc[0];c = rc[1];grid = [];循环 (i = 0; i < r; i++){ grid.添加(控制台.读数字());}rowSums = [];循环 (i = 0; i < r; i++){ sum = 0; 循环 (j = 0; j < c; j++) { sum += grid[i][j]; } rowSums.添加(sum);}colSums = [];循环 (j = 0; j < c; j++){ sum = 0; 循环 (i = 0; i < r; i++) { sum += grid[i][j]; } colSums.添加(sum);}控制台.输出(rowSums);控制台.输出(colSums);