1048 Find Coins
题意:略
思路:two pointers思想,简单
先对数字序列进行排序,然后定义两个指针left和right,初始状态low=0,high=n-1。当a[low]+a[high] > M时,high向左移动;当a[low]+a[high] < M时,left向右移动。
代码:
#include <cstdio>
#include <algorithm>
using namespace std;
;
int value[N];
int main()
{
int n,m;
scanf("%d%d",&n,&m);
;i<n;i++)
scanf("%d",&value[i]);
sort(value,value+n);
,high=n-;
while(low<high){
if(value[low]+value[high]==m) break;
else if(value[low]+value[high]>m) high--;
else low++;
}
if(low==high) printf("No Solution\n");
else printf("%d %d\n",value[low],value[high]);
;
}
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