19 条题解
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15
这一道题一遍过好吧,来吧,走起!
- 首先遍历a ~ b,用int型变量可以自动变成int型
- 每一次将循环变量的值增加2即可,并且输出 char 类型的 i 值
- 再次遍历,b ~ a,同样的方法,每次将循环变量减少 2,并且输出 char 类型的 i 值
- 注意!要加空格和换行呦(友情提醒)
上代码吧,必须是我 AC 过的,不然不敢给你们用啊,对不对
#include <bits/stdc++.h> using namespace std; int main() { char a, b; cin >> a >> b; for (int i = a; i <= b; i += 2) cout << (char)i << " "; cout << endl; for (int i = b; i >= a; i -= 2) cout << (char)i << " "; return 0; }
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4
这一题大家怎么都在用for循环?我用的是while循环(L4刚学过的),我觉得更方便~ 对了,这一题的题目是关于字符的,所以千万别忘了:变量类型是char!
已AC,请放心食用
#include <iostream> using namespace std; int main() { char c1, c2; cin >> c1 >> c2; char c3 = c1, c4 = c2; while (c3 <= c4) { cout << c3 << " "; c3 += 2; } cout << endl; while (c4 >= c1) { cout << c4 << " "; c4 -= 2; } return 0; }
养成好习惯,看后点个赞( •̀ ω •́ )✧!
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2
**直接上代码!!!**😄
#include<bits/stdc++.h> //用万能头写代码是个好习惯 using namespace std; int main() { char c1,c2; cin>>c1>>c2; int a,b; a = c1; //强制赋值 b = c2; //+1 for(int i = a;i<=b;i+=2) // 因为跳一个,所以+=2 { char c = i; //转化回来 cout<<c<<" "; } cout<<endl; for(int i = b;i>=a;i-=2) { char d = i; // +1 cout<<d<<" "; } return 0; } // 代码AC过,放心食用
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1
step 1.这一道题一遍过好吧,来吧,走起!
step 2.好啦!我们先来理一理这道题的思路:
step 3. 首先遍历a~b,用int型变量可以自动变成int型。
step 4. 每一次将循环变量的值增加2即可,并且输出char类型的i的值。
step 5. 再次遍历,b~a,同样的方法,每次将循环变量减少2,并且输出char类型的i的值。
step 6. 注意!要加空格和换行呦!(友情提醒)
step 7.上代码吧,必须是AC过的,不然我不敢给大佬们用啊,对不对?(大佬是指除了我之外的其他人)
step 8:
#include <bits/stdc++.h> using namespace std; int main() { char a, b; cin >> a >> b; for (int i = a; i <= b; i += 2) { cout << char(i) << " "; } cout << endl; for (int i = b; i >= a; i -= 2) { cout << char(i) << " "; } return 0; }
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-3
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b d f h j l n p r t v x z | ~ � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � " & ( * , . 0 2 4 6 8 : < > @ B D F H J L N P R T V X Z \ ^ `b d f h j l n p r t v x z | ~ � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � " & ( * , . 0 2 4 6 8 : < > @ B D F H J L N P R T V X Z \ ^b d f h j l n p r t v x z | ~ � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � " $ & ( * , . 0 2 4 6 8 : < > @ B D F H J L N P R T V X Z \ ^
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b d f h j l n p r t v x z | ~ � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � " & ( * , . 0 2 4 6 8 : < > @ B D F H J L N P R T V X Z \ ^`b d f h j l n p r t v x z | ~ � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � " & ( * , . 0 2 4 6 8 : < > @ B D F H J L N P R T V X Z \ ^b d f h j l n p r t v x z | ~ � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � " $ & ( * , . 0 2 4 6 8 : < > @ B D F H J L N P R T V X Z \ ^
b d f h j l n p r t v x z | ~ � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � " & ( * , . 0 2 4 6 8 : < > @ B D F H J L N P R T V X Z \ ^`b d f h j l n p r t v x z | ~ � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � " & ( * , . 0 2 4 6 8 : < > @ B D F H J L N P R T V X Z \ ^b d f h j l n p r t v x z | ~ � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � " $ & ( * , . 0 2 4 6 8 : < > @ B D F H J L N P R T V X Z \ ^
b d f h j l n p r t v x z | ~ � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � " & ( * , . 0 2 4 6 8 : < > @ B D F H J L N P R T V X Z \ ^`b d f h j l n p r t v x z | ~ � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � " & ( * , . 0 2 4 6 8 : < > @ B D F H J L N P R T V X Z \ ^b d f h j l n p r t v x z | ~ � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � " $ & ( * , . 0 2 4 6 8 : < > @ B D F H J L N P R T V X Z \ ^
b d f h j l n p r t v x z | ~ � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � " & ( * , . 0 2 4 6 8 : < > @ B D F H J L N P R T V X Z \ ^`b d f h j l n p r t v x z | ~ � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � " & ( * , . 0 2 4 6 8 : < > @ B D F H J L N P R T V X Z \ ^b d f h j l n p r t v x z | ~ � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � " $ & ( * , . 0 2 4 6 8 : < > @ B D F H J L N P R T V X Z \ ^
b d f h j l n p r t v x z | ~ � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � " & ( * , . 0 2 4 6 8 : < > @ B D F H J L N P R T V X Z \ ^`b d f h j l n p r t v x z | ~ � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � " & ( * , . 0 2 4 6 8 : < > @ B D F H J L N P R T V X Z \ ^b d f h j l n p r t v x z | ~ � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � " $ & ( * , . 0 2 4 6 8 : < > @ B D F H J L N P R T V X Z \ ^
b d f h j l n p r t v x z | ~ � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � " & ( * , . 0 2 4 6 8 : < > @ B D F H J L N P R T V X Z \ ^`b d f h j l n p r t v x z | ~ � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � " & ( * , . 0 2 4 6 8 : < > @ B D F H J L N P R T V X Z \ ^b d f h j l n p r t v x z | ~ � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � " $ & ( * , . 0 2 4 6 8 : < > @ B D F H J L N P R T V X Z \ ^
b d f h j l n p r t v x z | ~ � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � " & ( * , . 0 2 4 6 8 : < > @ B D F H J L N P R T V X Z \ ^`b d f h j l n p r t v x z | ~ � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � " & ( * , . 0 2 4 6 8 : < > @ B D F H J L N P R T V X Z \ ^b d f h j l n p r t v x z | ~ � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � " $ & ( * , . 0 2 4 6 8 : < > @ B D F H J L N P R T V X Z \ ^
b d f h j l n p r t v x z | ~ � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � " & ( * , . 0 2 4 6 8 : < > @ B D F H J L N P R T V X Z \ ^`b d f h j l n p r t v x z | ~ � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � " & ( * , . 0 2 4 6 8 : < > @ B D F H J L N P R T V X Z \ ^b d f h j l n p r t v x z | ~ � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � " $ & ( * , . 0 2 4 6 8 : < > @ B D F H J L N P R T V X Z \ ^
b d f h j l n p r t v x z | ~ � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � " & ( * , . 0 2 4 6 8 : < > @ B D F H J L N P R T V X Z \ ^`b d f h j l n p r t v x z | ~ � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � " & ( * , . 0 2 4 6 8 : < > @ B D F H J L N P R T V X Z \ ^b d f h j l n p r t v x z | ~ � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � " $ & ( * , . 0 2 4 6 8 : < > @ B D F H J L N P R T V X Z \ ^
b d f h j l n p r t v x z | ~ � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � " & ( * , . 0 2 4 6 8 : < > @ B D F H J L N P R T V X Z \ ^`b d f h j l n p r t v x z | ~ � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � " & ( * , . 0 2 4 6 8 : < > @ B D F H J L N P R T V X Z \ ^b d f h j l n p r t v x z | ~ � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � " $ & ( * , . 0 2 4 6 8 : < > @ B D F H J L N P R T V X Z \ ^
b d f h j l n p r t v x z | ~ � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � " & ( * , . 0 2 4 6 8 : < > @ B D F H J L N P R T V X Z \ ^`b d f h j l n p r t v x z | ~ � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � " & ( * , . 0 2 4 6 8 : < > @ B D F H J L N P R T V X Z \ ^b d f h j l n p r t v x z | ~ � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � " $ & ( * , . 0 2 4 6 8 : < > @ B D F H J L N P R T V X Z \ ^
b d f h j l n p r t v x z | ~ � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � " $ & ( * , . 0 2 4 6 8 : < > @ B D F H J L N P R T V X Z \ ^` b d f h j l n p r t v x z | ~ � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � -
-4
本题考查字符的编码解码。确定思路,一次正着输出,一次倒着输出,我这里采用了两次for循环。 1、输入两个字符 2、第一次for循环,在range中使用ord()函数,将字符转为数字进行循环,且步长为2。输出时以字符形式输出,因为遍历时使用的是数字,需用通过chr()函数进行字符转换,且输出结束时以空格收尾。 3、需要输出两行,打印一个换行。 4、第二次for循环,range中要倒着来,且步长是-2。 5、注意输出的最后一个字符。
c1, c2 = input().split() for i in range(ord(c1), ord(c2)+1, 2): print(chr(i), end=' ') print() for j in range(ord(c2), ord(c1)-1, -2): print(chr(j), end=' ')
- 1
信息
- ID
- 1126
- 时间
- 1000ms
- 内存
- 128MiB
- 难度
- 3
- 标签
- 递交数
- 1734
- 已通过
- 922
- 上传者