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March 24, 2013 12:17
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[NHN NEXT] 자료구조와 알고리즘 Permutation 쉬운 버젼. & selection sort
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#include <stdio.h> | |
#include <conio.h> | |
int n; | |
int check[10]; | |
char list[10]; | |
void perm(int); | |
void print(int); | |
int main(void) | |
{ | |
n = 4; | |
perm(0); | |
return 0; | |
} | |
void perm(int level) | |
{ | |
int i; | |
getch(); | |
print(level); | |
if( level == n ){ | |
return; | |
} | |
for( i = 0 ; i < n ; i ++ ){ | |
if( check[i] == 0 ){ | |
list[level] = 'A' + i; | |
check[i] = 1; | |
perm( level + 1 ); | |
check[i] = 0; | |
list[level] = 0; | |
} | |
} | |
} | |
void print(int n) | |
{ | |
int i; | |
if( n == 0 ) return; | |
printf("{'%c'", list[0]); | |
for( i = 1 ; i < n ; i ++ ){ | |
printf(", '%c'", list[i]); | |
} | |
printf("}\n"); | |
} |
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#include <stdio.h> | |
int main(void) | |
{ | |
int arr[] = {1, 3, 8, 10, 12, 14, 15, 19, 25, 30}; | |
int length = sizeof(arr)/sizeof(int); // 원소의 개수 | |
int left = 0, right = length - 1; | |
int mid, key; | |
printf("input key = "); | |
scanf("%d",&key); | |
while( left <= right ){ // left ~ right 검색하고자 하는 범위 | |
mid = (left + right) / 2; // auto-casting condition, 그러나 이게 가장 범용적인 코드 | |
if( key == arr[mid] ){ | |
printf("찾았다!"); | |
break; | |
} | |
else if( key < arr[mid] ){ | |
right = mid - 1; | |
} | |
else{ | |
left = mid + 1; | |
} | |
} | |
if( key != arr[mid] ){ | |
printf("못찾았다..."); | |
} | |
return 0; | |
} |
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헉. selection_sort라고 이름 붙여놓고 binary_search 코드를 올려놨어요...
천천히 고쳐볼께요 ㅠㅠ