1 条题解
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2
模仿课上后缀表达式的解法，然后根据题目的运算规则写出来即可
核心代码
for(int i=c.length()-1;i>=0;i--) { if(c[i]>='0'&&c[i]<='9') s.push(c[i]-'0'); else if(c[i]=='+'){ x=s.top(); s.pop(); y=s.top(); s.pop(); s.push(x+y); } else if(c[i]=='-'){ x=s.top(); s.pop(); y=s.top(); s.pop(); s.push(x-y); } else if(c[i]=='*'){ x=s.top(); s.pop(); y=s.top(); s.pop(); s.push(x*y); } else if(c[i]=='/'){ x=s.top(); s.pop(); y=s.top(); s.pop(); s.push(x/y); } }-
hetao815606
@ 2024-2-24 14:48:06
帮易云老师补充以下代码，只不过做了亿点点改动而已
#include <bits/stdc++.h> #define ll long long #define zhan stack #define zifuchuan string #define zhengshu int #define shuru cin #define shuchu cout #define yaru push #define xunhuan for #define ruguo if #define fouze else #define huanhang "\n" #define tanchu pop #define shiyong using #define mingmingkongjian namespace #define head top #define fanhui return #define xiaoyv << #define dayv >> #define zhuhanshu main shiyong mingmingkongjian std; zhan<zhengshu> s; zifuchuan c; zhengshu x, y; zhengshu zhuhanshu() { shuru dayv c; xunhuan (zhengshu i = c.length() - 1; i >= 0; i--) { ruguo (c[i] >= '0' && c[i] <= '9') s.yaru(c[i] - '0'); fouze ruguo (c[i] == '+') { x = s.head(); s.tanchu(); y = s.head(); s.tanchu(); s.yaru(x + y); } fouze ruguo (c[i] == '-') { x = s.head(); s.tanchu(); y = s.head(); s.tanchu(); s.yaru(x - y); } fouze ruguo (c[i] == '*') { x = s.head(); s.tanchu(); y = s.head(); s.tanchu(); s.yaru(x * y); } fouze ruguo (c[i] == '/') { x = s.head(); s.tanchu(); y = s.head(); s.tanchu(); s.yaru(x / y); } } shuchu xiaoyv s.head() xiaoyv huanhang; fanhui 0; } -
hetao1394742
@ 2024-6-1 11:54:08
#include <bits/stdc++.h> #define ll long long #define zhan stack #define zifuchuan string #define zhengshu int #define shuru cin #define shuchu cout #define yaru push #define xunhuan for #define ruguo if #define fouze else #define huanhang "\n" #define tanchu pop #define shiyong using #define mingmingkongjian namespace #define head top #define fanhui return #define xiaoyv << #define dayv >> #define zhuhanshu main shiyong mingmingkongjian std;zhan<zhengshu> s;zifuchuan c;zhengshu x, y;zhengshu zhuhanshu(){shuru dayv c;xunhuan (zhengshu i = c.length() - 1; i >= 0; i--){ruguo (c[i] >= '0' && c[i] <= '9') s.yaru(c[i] - '0');fouze ruguo (c[i] == '+'){x = s.head();s.tanchu();y = s.head();s.tanchu();s.yaru(x + y);}fouze ruguo (c[i] == '-'){x = s.head();s.tanchu();y = s.head();s.tanchu();s.yaru(x - y);}fouze ruguo (c[i] == '*'){x = s.head();s.tanchu();y = s.head();s.tanchu();s.yaru(x * y);}fouze ruguo (c[i] == '/'){x = s.head();s.tanchu();y = s.head();s.tanchu();s.yaru(x / y);}}shuchu xiaoyv s.head() xiaoyv huanhang;fanhui 0;}《论混淆》
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yiyun
LV 3
MOD
@ 2023-11-27 14:49:38
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