15. 神秘的字符

#include<iostream>
#include<string>
using namespace std;
int main() {
    int n;
    cin >> n;
    getchar(); // 吸收n后的一个回车
    while (n--) {
        string s, t;
        cin >> s >> t;

        string result = "";
        for (int i = 0; i < s.size() / 2; i++) { // 处理s的前半段
            result += s[i];
        }
        result += t; // 添加 字符串t
        for (int i = s.size() / 2; i < s.size(); i++) { // 处理s的后半段
            result += s[i];
        }
        cout << result << endl;
    }
}

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

public class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        String str = null;
        while((str = reader.readLine())!= null){
            StringTokenizer tokenizer = new StringTokenizer(str);
            int n = Integer.parseInt(tokenizer.nextToken());
            for(int i = 0; i < n; i++){
                String a = reader.readLine();
                String b = reader.readLine();
                StringBuilder sb = new StringBuilder();
                int len = a.length();
                sb.append(a.substring(0,len/2));
                sb.append(b);
                sb.append(a.substring(len/2,len));
                System.out.println(sb.toString());
            }
        }
    }
}

import java.util.Scanner;

public class Main{
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int n = in.nextInt();
        for (int i = 0; i < n; i++) {
            String a = in.next();
            String b = in.next();
            StringBuilder sb = new StringBuilder(a);
            sb.insert(a.length() / 2, b);
            System.out.println(sb.toString());
        }
    }
}

n = int(input())
for _ in range(n):
    line1 = input()
    line2 = input()
    mid = len(line1) // 2
    result = line1[:mid] + line2 + line1[mid:]
    print(result)

package main

import "fmt"

func main() {
	var n int
	_, err := fmt.Scan(&n)
	if err != nil {
		return
	}
	for n > 0 {
		var a, b string
		_, _ = fmt.Scanln(&a)
		_, _ = fmt.Scanln(&b)
		fmt.Println(a[:len(a)/2] + b + a[len(a)/2:])
		n--
	}
}

const rl=require("readline").createInterface({input:process.stdin});
const iter=rl[Symbol.asyncIterator]();
const readline=async ()=>(await iter.next()).value;

function merge(str1,str2){
  const middle=Math.floor(str1.length/2);
  return str1.slice(0,middle)+str2+str1.slice(middle);
}

async function main(){
  const n=parseInt(await readline());
  for(let i=0;i<n;i++){
    let str1=await readline();
    let str2=await readline();
    console.log(merge(str1,str2));
  }
}

main();

#include <stdio.h>
#include <string.h>

int main() {
    int n;
    char tmp;
    scanf("%d", &n);
    char s[100], t[100];
    fgets(s, sizeof(s), stdin); // 吸收换行符
    while (n--) {
        fgets(s, sizeof(s), stdin); // 读取s字符串
        s[strcspn(s, "\n")] = '\0'; // 移除换行符
        fgets(t, sizeof(t), stdin); // 读取t字符串
        t[strcspn(t, "\n")] = '\0'; // 移除换行符

        char result[200] = "";
        int len = strlen(s);
      
        int mid = len % 2 == 0 ? len / 2 : len / 2 + 1;
        
        strncpy(result, s, mid); // 复制s的前半部分到result
        strcat(result, t); // 连接字符串t到result
        strcat(result, s + mid); // 连接s的后半部分到result

        printf("%s\n", result);
    }
    return 0;
}