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µ±Ç°Î»ÖãºÊ×Ò³ > ¡¶Êý¾Ý½á¹¹ÊµÑéÓëʵѵ½Ì³Ì(µÚ4°æ)¡·³ÌÐò´úÂë

¡¶Êý¾Ý½á¹¹ÊµÑéÓëʵѵ½Ì³Ì(µÚ4°æ)¡·³ÌÐò´úÂë

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  • 2025/5/26 1:20:30

push( &top, tree ); /* Ê÷½áµãÈëÕ» */ _____5______; /* ÑØ×ó×ÓÊ÷ǰ½ø, ½«¾­¹ýµÄ½áµãÒÀ´Î½øÕ» */ }

if( top != NULL ) { /* ×ó×ÓÊýÈëÕ»½áÊø, ÇÒÕ»·Ç¿Õ */ pop( &top, &tree ); /* Ê÷½áµã³öÕ» */ ______6__________; /* ·ÃÎʸù½áµã */

_______7______ ; /* ÏòÓÒ×ÓÊ÷ǰ½ø */

} }

}

void st_posorder( TREE *tree ) /* ºóÐò±éÀú, ²ÉÓÃÁ´½ÓÕ»µÄµü´ú·½·¨ */ { STACK *top; /* Õ»¶¥Ö¸Õë */ top = NULL; /* ³õʼ»¯Îª¿ÕÕ» */ do{ while( _____8______ ) { /* ¶þ²æÊ÷»¹Î´±éÀúÍê */ push( &top, tree ); /* Ê÷½áµãÈëÕ» */ top->flag = 0; /* ±ê־Ϊ0, ±íʾÓÒ×ÓÊ÷δ·ÃÎÊ */ _____9______; /* ÑØ×ó×ÓÊ÷ǰ½ø, ½«¾­¹ýµÄ½áµãÒÀ´Î½øÕ» */ }

if( top != NULL ) { /* Õ»·Ç¿Õ */ while( top!=NULL && ____10_____ ) { /* ÓÒ×ÓÊ÷ÒÑ·ÃÎÊ */ pop( &top, &tree ); /* ³öÕ» */ printf( \ }

if( top != NULL ) {

____11______; /* ÖÃÓÒ×ÓÊ÷Ϊ·ÃÎʱêÖ¾ */

tree = (top->t)->rchild;/* ²éÕÒÕ»¶¥ÔªËصÄÓÒ×ÓÊ÷ */

} }

}while( top != NULL ); /* Ñ­»·Ìõ¼þΪջ·Ç¿Õ */

}

³ÌÐò2£ºÌâ2 Ö÷º¯Êý

/* ±¾³ÌÐòʵÏÖÁ˶þ²æ²éÕÒÊ÷µÄÖÐÐò±éÀú, ǰÐò±éÀú, ºóÐò±éÀúµÄµÝ¹éºÍµü´ú·½·¨ */ #include #include #include void main()

48

{ TREE *t; int i,op=-1;

/* ¶¨ÒåÊ÷ */ t = NULL;

/* ³õʼ»¯Îª¿ÕÊ÷ */

while( op != 0 ) { printf( \ÇëÑ¡Ôñ²Ù×÷£¬1£ºÔö¼ÓÊ÷½áµã 0£º½áÊø²Ù×÷ \ fflush( stdin ); /* Çå¿Õ±ê×¼ÊäÈ뻺³åÇø */

scanf( \

switch( op ) { case 0: /* Í˳ö */ break; case 1: /* Ôö¼ÓÊ÷½áµã */ printf( \ÇëÊäÈëÊ÷½áµãÔªËØ£º\ scanf( \ switch( InsertNode( &t, i ) { case 0: /* ³É¹¦ */ clrscr(); gotoxy( 1, 1 ); printf( \³É¹¦£¬Êý½á¹¹Îª:\\n\ OutputTree( t ); break; case 1:

printf( \¸ÃÔªËØÒÑ´æÔÚ\

break;

default: printf( \ÄÚ´æ²Ù×÷ʧ°Ü\ break; }

break; } }

printf( \ǰÐò±éÀú, µÝ¹é·½·¨\\n\ re_preorder( t ); /* ǰÐò±éÀú, µÝ¹é·½·¨ */ printf( \ÈÎÒâ¼ü¼ÌÐø\\n\\n\ getch(); printf( \ÖÐÐò±éÀú, µÝ¹é·½·¨\\n\ re_midorder( t ); /* ÖÐÐò±éÀú, µÝ¹é·½·¨ */

printf( \ÈÎÒâ¼ü¼ÌÐø\\n\\n\

49

getch(); printf( \ºóÐò±éÀú, µÝ¹é·½·¨\\n\ re_posorder( t ); /* ºóÐò±éÀú, µÝ¹é·½·¨ */ printf( \ÈÎÒâ¼ü¼ÌÐø\\n\\n\ getch(); printf( \ǰÐò±éÀú, ²ÉÓÃÁ´½ÓÕ»µÄµü´ú·½·¨\\n\

st_preorder( t ); /* ǰÐò±éÀú, ²ÉÓÃÁ´½ÓÕ»µÄµü´ú·½·¨ */ printf( \ÈÎÒâ¼ü¼ÌÐø\\n\\n\ getch();

printf( \ÖÐÐò±éÀú, ²ÉÓÃÁ´½ÓÕ»µÄµü´ú·½·¨\\n\ st_midorder( t ); /* ÖÐÐò±éÀú, ²ÉÓÃÁ´½ÓÕ»µÄµü´ú·½·¨ */ printf( \ÈÎÒâ¼ü¼ÌÐø\\n\\n\ getch(); printf( \ºóÐò±éÀú, ²ÉÓÃÁ´½ÓÕ»µÄµü´ú·½·¨\\n\ st_posorder( t ); /* ºóÐò±éÀú, ²ÉÓÃÁ´½ÓÕ»µÄµü´ú·½·¨ */ printf( \ÈÎÒâ¼üÍ˳ö\\n\\n\ getch(); }

³ÌÐò3£ºÌâ3 Huffman±àÂë #include #define MAX 21

typedef struct { /* ¶¨ÒåhuffmanÊ÷½áµã½á¹¹ */ char data; /* ½áµãÖµ */ int weight; /* È¨ÖØ */ int parent; /* ¸¸½áµã */ int left; /* ×ó½áµã */

int right; /* ÓÒ½áµã */

}huffnode;

typedef struct { /* ¶¨Òåhuffman±àÂë½á¹¹ */ char cd[MAX];

int start;

}huffcode; void main() { huffnode ht[2*MAX]; huffcode hcd[MAX], d;

int i, k, f, j, r, n=0, c, m1, m2;

printf( \ÇëÊäÈëÔªËØ¸öÊý( 1 --> %d ):\

scanf( \%d\

50

if( n > MAX-1 || n < 1 ) /* ÊäÈë´íÎó, Í˳ö */ return;

for( i = 0; i < n; i++ ) { fflush( stdin ); printf( \µÚ%d¸öÔªËØ=>\\n\\t½áµãÖµ:\ scanf( \%c\ printf( \È¨ÖØ:\ scanf( \%d\

}

for( i = 0; ___1___; i++ ) ht[i].parent = ht[i].left = ht[i].right = 0;

for( i = n; i < 2 * n - 1; i++ ) { /* ¹¹ÔìhuffmanÊ÷ */ m1 = m2 = 0x7fff; j = r = 0; /* j, rΪ×îÐ¡È¨ÖØµÄÁ½¸ö½áµãλÖà */ for( k = 0; k < i; k++ ) if( ht[k].parent == 0 ) if(___2_ < m1 ) { m2 = m1; r = j;

__3______; j = k; }

else if( ht[k].weight < m2 ) {

m2 = _4____;

r = k;

}

ht[j].parent = _5___;

ht[r].parent =___6__;

ht[i].weight = ____7_____; ht[i].left = j; ht[i].right = r; }

for( i = 0; i < n; i++ ) { /* ¸ù¾ÝhuffmanÊ÷Çóhuffman±àÂë */ d.start = n; c = i;

f = ht[i].parent;

while( f != 0 ) { if(___8____ == c ) d.cd[ --d.start ] = '0';

else

51

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push( &top, tree ); /* Ê÷½áµãÈëÕ» */ _____5______; /* ÑØ×ó×ÓÊ÷ǰ½ø, ½«¾­¹ýµÄ½áµãÒÀ´Î½øÕ» */ } if( top != NULL ) { /* ×ó×ÓÊýÈëÕ»½áÊø, ÇÒÕ»·Ç¿Õ */ pop( &top, &tree ); /* Ê÷½áµã³öÕ» */ ______6__________; /* ·ÃÎʸù½áµã */ _______7______ ; /* ÏòÓÒ×ÓÊ÷ǰ½ø */ } } } void st_posorder( TREE *tree ) /* ºóÐò±éÀú, ²ÉÓÃÁ´½ÓÕ»µÄµü´ú·½·¨ */ { STACK *top; /* Õ»¶¥Ö¸Õë */ top = NULL; /* ³õʼ»¯Îª¿ÕÕ» */ do{

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