101 lines
2.2 KiB
C
101 lines
2.2 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <malloc.h>
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#include <values.h>
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#include "lceb.h"
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static int target=0;
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//static int best=MAXINT;
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static int bestdiff=MAXINT;
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static int bestops=MAXINT;
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static BEST bests[1024]; /* TODO: should be dynamic */
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static int nbests=0;
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#define DIFF(a, b) ((a)>(b)?(a)-(b):(b)-(a))
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void set_target(n)
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int n;
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{
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target=n;
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}
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int check_best(res, nops, node, values, ops)
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int res;
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int nops;
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NODE *node;
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int *values;
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char *ops;
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{
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int diff, found=0;
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diff=DIFF(target, res);
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# ifdef DEBUG
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printf("check_best: res=%d diff=%d nops=%d\n", res, diff, nops);
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# endif
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if (diff < bestdiff || (diff == bestdiff && nops < bestops)) {
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# ifdef DEBUG
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printf("NEW BEST! res=%d diff=%d nops=%d\n", res, diff, nops);
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printf("check_best: res=%d diff=%d nops=%d\n", res, diff, nops);
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# endif
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//best=res;
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bestdiff=diff;
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bestops=nops;
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nbests=0;
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found=1;
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//return 1;
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} else if (diff == bestdiff && nops == bestops) {
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# ifdef DEBUG
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printf("NEW BEST SOLUTION (%d): res=%d diff=%d nops=%d\n", nbests+1, res, diff, nops);
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# endif
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found=1;
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}
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if (found) {
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bests[nbests].res=res;
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bests[nbests].diff=diff;
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bests[nbests].oper=ops;
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bests[nbests].root=node;
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bests[nbests].values=values;
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nbests++;
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return 1;
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}
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return 0;
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}
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void print_best(node, values, pops, depth)
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NODE *node;
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int *values;
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char *pops;
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int depth;
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{
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static int *vals;
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static char *ops;
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if (depth == 0) {
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vals=values;
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ops=pops;
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}
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if (node->type == TREE_LEAF) {
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printf("%d ", *vals);
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vals++;
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} else {
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print_best(node->left, vals, ops, depth+1);
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print_best(node->right, vals, ops, depth+1);
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printf(" %c ", *ops);
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ops++;
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}
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if (depth == 0)
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putchar('\n');
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}
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void print_bests()
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{
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int i;
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printf("BESTS: diff=%d solutions=%d nops=%d\n", bestdiff, nbests, bestops);
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for (i=0; i<nbests; ++i) {
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printf("res = %d : ", bests[i].res);
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print_best(bests[i].root, bests[i].values, bests[i].oper, 0);
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}
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}
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