#include "stdlib.h"4 ?( ^( _ |" v, K! h
#include "string.h"
% W. r8 C4 z- l8 n#include "stdio.h" #define MAXSIZE 400
0 O9 b1 N6 i9 k8 p1 ]# _. h$ a% Gchar a[MAXSIZE]; typedef struct
9 U- |5 w, A# b T7 L: _{% _ S; p% m8 B, X
char elem[MAXSIZE];
; v! k, [3 o. Q int top;
( O8 I3 g) b7 I# A}SqStack; SqStack S; typedef struct poly7 K d. ?0 ?5 @! e& ~0 R
{
: X+ ?) i% q. X int coef; /*xishu*/
9 v3 B- W; E* M" @ int exp; /*zhishu*/* s% G j$ t+ k A
struct poly *next;
# t4 k% t3 A) J* F7 h! a}Lpoly; Lpoly *pa; int cf(int i) /*10^i*/0 l8 u! [) l6 M( Q
{2 A: k/ }0 Z- h
int c = 1, j;5 r- F! w1 m* i/ t. k! Y! u. Y
for(j = 1; j <= i; j ++)7 J, j9 [& I4 s& L I( u4 k
c = c * 10;
' v# W! ?+ l f+ ` return c;2 Q; r* U4 D5 Y; l! P
} void input(char a[],int j)# ~: i# M. E2 ]+ K
{
X4 B0 w0 A8 F. n( ^4 c, M Lpoly *p, *h, *ptr;% d% Y4 [0 J3 |$ g
int i, k, flag = 0, x = 0;: H5 Z2 ~' a4 }; b1 j
S.top = -1;
6 b& R, l" ?9 y) b5 V$ G% s pa = (Lpoly*)malloc(sizeof(Lpoly));; c5 V* U& M5 j$ g" {
pa->coef = 0;
- F3 \3 f' N+ X! \' F1 @1 A pa->exp = 0;9 Q2 \8 n) o2 \, J
h = pa;8 Y5 F' X) M1 q6 |( T, V/ m5 W
h->next = NULL;
$ G, X+ t( d/ k5 X& q8 n* ] p = h; /*jianlipa*/
& K0 j5 I0 j7 j1 T3 m5 s ; u5 b$ x2 j8 m
for (i = 0; i <= j - 1; i ++)
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ptr = (Lpoly*)malloc(sizeof(Lpoly));
2 C* S1 E/ |" k8 }6 _7 A J" f if(S.top)( {4 V( W1 @+ B- F; U H
{4 V( p" c, @1 r' p7 p y
S.top ++;
8 T% E+ Q3 ~% Y# f S.elem[S.top] = a;
2 L& P0 W W6 M2 o }! M) g& D' b+ ? S F% [, H
if (a == '-')8 P' ~5 J& R5 W
flag=1;
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if(a == 'x') /*fenlixishu*/# D/ A* }8 ?8 j- o+ z
{
$ G; Y* s* u, C6 C; f if (S.top==0)2 C2 r9 k3 W) O- l0 i6 }! {
{) n$ ?$ {* b( N1 c/ W! N
if (flag == 1)
* K3 x2 c: |0 e% C {3 \1 m0 j" f/ h; G/ t: k- A& F
ptr->coef = -1;
3 C P' z. h0 z, g9 e ptr->next = NULL;0 E/ [& s: d) v' }( J/ B
}% |) V1 b0 T" ~, @ G6 d
else
L6 m( U, ~( P {
* \* }" U$ E2 E# _+ t2 I% ]+ x ptr->coef = 1;
2 v6 M3 X( h6 b3 ] ptr->next = NULL;
: f L# t' E$ x* b, u& P/ h }
4 q) ?7 Z% Z" W# r! U- r, m8 d3 b6 G }
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{
! D$ ?' j7 m" J- H$ z$ r7 D for (k=S.top - 1; k >= 0; k --)1 [# ]% h4 S& @9 z7 H& R
x = x + (S.elem[k] - '0') * cf(S.top - 1 - k);5 |/ d1 l/ j9 K7 b; J4 c
ptr->coef = x;
. Z# O: K, Y( L: i ptr->next = NULL;
+ g% A# Q# }$ G' l- s2 w$ j x = 0;
) F9 R% B: a6 b" x- K }. C$ t5 `- j7 n" \2 {/ D6 I
S.top = -1;
1 |) J+ `" i& r! P ~ flag = 0; /*clear*/2 i" x- ~; L6 K8 ]% U+ V+ b
}
# {: X# t. H- }' Q if (a == '+' || a == '-') /*fenlizhishu*/+ f- `/ C! K4 C6 L( [9 A
{6 F3 k0 O( H" X0 G! X
if(S.top == 0)0 P$ M3 C! ~! B- d
{
/ q! x/ e e3 _6 c ptr->exp = 1;
- S$ J1 g0 X* l1 F; F# S/ I$ V! [ ptr->next = NULL;
N( S/ I1 t5 t, d9 Y }( G: [2 b k5 p1 }
else) C3 A5 C/ e+ U, _% L' ~/ Z O5 c
{3 p1 E1 ?' d t
for (k = S.top - 1; k >= 0; k --)$ q3 E+ K4 K, H4 `% ~
x = x + (S.elem[k] - '0') * cf(S.top - 1 - k);
# v' w+ l/ p$ I, Y4 c( R ptr->exp = x;
9 V- H+ G; Q8 Y( b+ `& b+ ` ptr->next = NULL;3 s( A1 r* H8 T3 Q3 S' Y I
x = 0;* V9 f/ T% y: C; ~* e: n% b
}/*tiquzhishu*/5 D# R: K5 e, G. _
S.top = -1;& @* A! J7 i8 p/ `; O
}2 A( u$ N$ R- f5 {/ f8 g/ H5 d0 ]
if (ptr->coef != 0 && ptr->exp != 0): K1 k5 r; ]% {5 J d
{
1 v# N$ L5 |% U1 O p->next = ptr;8 U' {! K1 f2 g
p = ptr;
% o( v$ p8 w& \1 X3 \" p }
) q8 h" K8 w& [$ ^; `! g. `6 J if (i == j - 1), g) q7 L- l% b, u: u' E
{5 {& g5 }+ I$ W# S
if (ptr->coef == 0)
7 _9 F* k/ p" {) N' G) v8 a {
& Q: d' a4 r$ g1 L: O& v* u for (k = S.top; k >= 0; k --)/ @3 l9 A- b3 z; D* v
x = x + (S.elem[k] - '0') * cf(S.top - k);1 A3 b: f" ?: R" O
ptr->coef = x;
z+ s6 `, I7 n8 q8 |: i9 u% V3 L ptr->next = NULL;1 i9 _0 ?# F+ r: ]( h) |2 O
}- p0 S' m) v) y
else
7 ]8 v% v- P$ t8 @; x0 [2 N6 Q {
l, ^3 i7 E, K0 w, i0 `! s7 E for (k = S.top; k >= 0; k --)( v% z) u+ x5 p
x = x + (S.elem[k] - '0') * cf(S.top - k);8 z! g6 s" d7 i% I
ptr->exp = x;: J, k% f4 e# l+ A* g( b
ptr->next = NULL;: g2 E# |5 W q' E o% v
}: ~) x0 n# U. v& T5 T
p->next = ptr;
7 |! Q6 ~, E# B [% z: L ptr->next = NULL;
' Q5 u& Y0 y$ q6 l }/ ]: x2 S3 r9 g2 ~
}3 p" U( s( [. S" m
} void stinsort(Lpoly *pa)
. i* h# \" n4 W% o) s& O0 a6 {4 H{) ]0 h- D$ X# f& Q$ @
Lpoly *p, *h, *q, *k;
' k* ^2 G& Z. J* U# o* x h = pa;5 J( G' \, B- q* z/ Q
p = k = h->next;
! B7 T5 M5 T' e; l8 u) |/ G0 x q = p->next;& ]3 V+ `- P! d) |3 x" g; ~
while (p->next != NULL)3 T$ G; @$ M. Z! y$ @, Z A# [1 I
{# i" h! z, v- {
if (q->exp)1 v! [, R" S- `+ k1 O
{6 {( ~+ M/ P3 r, i/ G
while(q->exp > k->exp)
8 ~& v! F9 F# {4 ^( o5 v% D3 A {
2 ?) O& r7 Z2 z B9 ]2 V6 F$ F k = k->next;; K6 `# \7 [8 [! K6 o1 F* j
h = h->next;
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if(q->exp)
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p->next = q->next;& W3 i* l; V `2 t6 Y8 Z
h->next = q;
& C, R( W! q. V% A% Q; R" j' S7 ] q->next = k;. P/ m( g. n/ K6 Q1 S) n, J
q = p->next;" J% A* a9 G- k d7 d0 x
}
% L$ o8 S' I& r. E! Z$ \1 _4 L if (q->exp = k->exp)
; d+ W# g/ H! J {4 m- Y4 ^7 ~0 y1 {4 S" M/ I
k->coef = k->coef + q->coef;
, X% r" Y2 }$ v; S p->next = q->next;
& N+ }+ M* z1 {& F( l U! l q = p->next;3 ?' N' |/ M8 K: U+ k1 d+ t
}0 ~. z; d- @: D
h=pa;
; h* Y( D- w3 Y O k = h->next;
6 h2 i9 @4 ^1 ^' x }& ^& `6 z5 L' ?+ f, J( t3 H% O
/ D$ R7 t, K3 k. x/ k+ C; R if (q->exp = p->exp)
' F _. y; w( B# u: b! C {0 u# \% d: z+ K$ D( `
p->coef = p->coef + q->coef;
8 p, m# w7 A4 c! k- c* Q9 _; {! D p->next = q->next;9 G1 g+ c& F* D6 C& ]- c M' q; \
q = p->next;
% _1 b1 x% u& Q& w6 [- @ e }
h1 d* _% v, ~2 \5 o8 G- S if (q->exp > p->exp)4 j& k- ?6 ^) r2 L) J0 W$ ]
{
: G7 T2 s6 M1 w" }) H4 w q = q->next;
' ^( z2 D6 X& z- ~ p = p->next;
- c$ w l$ Z0 z }, \4 m7 v* M0 R5 f2 R+ s
}+ p# a0 e8 r" _$ E! z+ v. c) j
} main()
8 X5 p; {, P R{
' P& y/ L3 f' j6 r6 m& Z8 [ int i, j = 0;! A* o3 o T ^1 d9 W& t
printf("a="); t! S4 T A8 t! R0 e. e
scanf("%s", a);- f1 [- i {" E, z: R
j = strlen(a); input(a, j); r9 ~( J8 c; f. \
stinsort(pa);2 i h8 B1 x+ M* M8 b ?2 m
printf("a=");
! d( y" [6 Q5 d* ~ L% N" A9 D* | for (i = 0; i <= j + 10; i ++)
3 D% x4 r1 f9 n2 K {* \+ Z/ P9 ~0 ? s. h" U0 }
printf("%dx%d+", pa->coef, pa->exp);0 C2 O' d4 ^" E+ j: L. S4 l
pa = pa->next;
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}
- f+ p6 `, h5 T- ]3 v 我把楼猪的代码弄了下,把里面大小写错误排除了,这段代码会有死循环,谁有空谁研究去。 |