大数类简单模板
发布时间:2020-12-14 02:28:48 所属栏目:大数据 来源:网络整理
导读:#includecstdio#includecmath#includeiostream#includealgorithm#includecstring#includestring#includecctype#includecassert#includecmath#includealgorithm#includecctype#includemap#includevector#includestack#includequeue#includeset#includecstdlib
#include<cstdio> #include<cmath> #include<iostream> #include<algorithm> #include<cstring> #include<string> #include<cctype> #include<cassert> #include<cmath> #include<algorithm> #include<cctype> #include<map> #include<vector> #include<stack> #include<queue> #include<set> #include<cstdlib> using namespace std; const int maxn=1000; struct bign { int len,s[maxn]; bign() { memset(s,sizeof(s)); len=1; } bign operator = (const char *num) { len=strlen(num); for(int i=0;i<len;i++) s[i]=num[len-i-1]-'0'; return *this; } bign(int num) { *this=num; } bign(const char *num) { *this=num; } string str() const { string res=""; for(int i=0;i<len;i++) { res=(char)(s[i]+'0')+res; } if(res=="") res="0"; return res; } bign operator +(const bign &b) const { bign c; c.len=0; for(int i=0,g=0;g||i<max(len,b.len);i++) { int x=g; if(i<len) x+=s[i]; if(i<b.len) x+=b.s[i]; c.s[c.len++]=x%10; g=x/10; } return c; } bign operator +=(const bign &b) { *this=*this +b; return *this; } bool operator <(const bign &b) const { if(len!=b.len) return len<b.len; for(int i=len-1;i>=0;i--) if(s[i]!=b.s[i]) return s[i]<b.s[i]; return false; } bool operator > (const bign &b) const { return b<*this; } bool operator <= (const bign &b) const { return !(b<*this); } bool operator >=(const bign &b) const { return !(*this<b); } bool operator !=(const bign &b) const { return b<*this||*this<b; } bool operator ==(const bign &b) const { return !(b<*this)&&!(*this<b); } }; istream &operator >> (istream &in,bign &x) { string s; in>>s; x=s.c_str(); return in; } ostream &operator << (ostream &out,const bign &x) { out<<x.str(); return out; } (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |