반절 찾기 와 순서 찾기
5445 단어 데이터 구조
#include
#include
#define MAX_NUM 100
typedef struct
{
int key;
} ElemType;
typedef struct
{
ElemType elem[MAX_NUM];
int length;
} SSTable;
int s(SSTable st,int key)
{
int i;
int ans=0;
int l=1,r=st.length,mid=0;
while (l<=r)
{
mid=(l+r)/2;
ans++;
if (key>st.elem[mid].key)
l=mid+1;
else if (key1;
else
{
printf(" :%d
",ans);
return mid;
}
}
printf(" :%d
",ans);
return 0;
}
int main()
{
int n,i,t;
SSTable st;
scanf("%d",&n);
st.length=n;
for (i=1; i<=n; i++)
scanf("%d",&st.elem[i].key);
scanf("%d",&t);
t=s(st,t);
if (t==0)
printf("
");
else printf(" :%d
",t);
return 0;
}
순서 찾기:
#include
#include
#define MAX_NUM 100
typedef struct
{
int key;
} ElemType;
typedef struct
{
ElemType elem[MAX_NUM];
int length;
} SSTable;
int s(SSTable st,int key)
{
int i;
int ans=0;
st.elem[0].key=key;
for (i=st.length; i>=1; i--)
{
ans++;
if (st.elem[i].key==key)
{
printf(" :%d
",ans);
return i;
}
}
printf(" :%d
",st.length);
return 0;
}
int main()
{
int n,i,t;
SSTable st;
scanf("%d",&n); //
st.length=n;
for (i=1; i<=n; i++)
scanf("%d",&st.elem[i].key);
scanf("%d",&t);
t=s(st,t);
if (t==0)
printf("
");
else printf(" :%d
",t);
return 0;
}