题目链接
题解
给定n个数字,问你与m相同的数字的个数有多少个.
存下来然后O(n)遍历整个数组统计就好了.
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#include<cstdio> #include<cstring> #include<iostream> #include<cmath> #include<algorithm> using namespace std ; template<class T>void read(T &x){ x=0;int f=0;char ch=getchar(); while(ch<'0'||ch>'9'){f|=(ch=='-');ch=getchar();} while(ch<='9'&&ch>='0'){x=(x<<1)+(x<<3)+(ch^48);ch=getchar();} x=f?-x:x; return ; } int q[101]; int main() { int n;read(n); for(int i=1;i<=n;i++) read(q[i]); int m;read(m); int sum=0; for(int i=1;i<=n;i++) if(q[i]==m) sum++; printf("%d",sum); return 0; } |
By:Wahacer
2017.11.29
19:18