题解 | 坐标移动

package main

import (
	"bufio"
	"fmt"
	"os"
	"strconv"
	"strings"
)

func getInput() []string {
    var inputText string
    reader := bufio.NewReader(os.Stdin)
    fmt.Fscan(reader, &inputText)
    return strings.Split(inputText, ";")
}

func main() {
    commandSlice := getInput()
    // 预设初始坐标0,0
    x, y := 0, 0
    for _, command := range commandSlice {
        if len(command) > 1 {
            if command[0] == 'A' || command[0] == 'W' || command[0] == 'S' || command[0] == 'D' {
                temp := command[1:]
                if number, err := strconv.Atoi(temp); err == nil && number < 100 && number > 0 && len(temp) < 3 {
                    switch command[0] {
                        case 'A':
                            x-=number
                        case 'D':
                            x+=number
                        case 'W':
                            y+=number
                        case 'S':
                            y-=number
                    }
                }
                // 字符串转int失败的不要
            }
            // 首字母不属于AWSD的不要
        }
        // 长度小于2的不要
    }
    fmt.Printf("%d,%d", x, y)
}