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[JAVA]用Java实现的各种排序

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用Java语言实现的各种排序,包括插入排序、冒泡排序、选择排序、Shell排序、快速排序、归并排序、堆排序、SortUtil等。 jk) V[7P  
插入排序: b>Vs5nY!  
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package org.rut.util.algorithm.support; h9g5W'.#  
V@e0VV3yx%  
import org.rut.util.algorithm.SortUtil; )Ky 0q-W  
/** {lx^57v  
* @author treeroot $].< /  
* @since 2006-2-2 Gd:fWz(  
* @version 1.0 ;y4 "wBX  
*/ [4PG_k[uTJ  
public class InsertSort implements SortUtil.Sort{ Z+I[  
'X@j  
/* (non-Javadoc) PM o>J|^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X B65,l  
*/ tUz!]P2BUO  
public void sort(int[] data) { ~`8`kk8  
int temp; f<0-'fGJd  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); CZ|Y o  
} &eK8v]|"W  
} j~Rh_\>Q  
} V"T;3@N/4  
.CwMxuW  
} vV8 y_  
wR>\5z )^  
冒泡排序: Gq+!%'][P  
c1jgBty  
package org.rut.util.algorithm.support; vseuk@>  
#UI@<0P)  
import org.rut.util.algorithm.SortUtil; 0^:O:X  
0Oe@0L%^3"  
/** t4F1[P  
* @author treeroot B>|@XfPM  
* @since 2006-2-2 7NoB   
* @version 1.0 0dXZd2oK@  
*/ Jw"'ZW#W  
public class BubbleSort implements SortUtil.Sort{ )CihqsA2  
[A[vR7&S  
/* (non-Javadoc) wQ4/eQ*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )jCAfdnCs  
*/ H[!by)H  
public void sort(int[] data) { YuLW]Q?v  
int temp; Eh8.S)E  
for(int i=0;i for(int j=data.length-1;j>i;j--){ j YO #  
if(data[j] SortUtil.swap(data,j,j-1); Ed_A#@V  
} TpZ)v.w~l7  
} 0'VwObq  
} pkBmAJb@  
} /1o~x~g(b  
L[##w?Xf.  
} '1/uf;OXIH  
Y/)>\  
选择排序: /':kJOk<[  
NWv1g{M  
package org.rut.util.algorithm.support; :;)K>g,b  
UT]LF#.(  
import org.rut.util.algorithm.SortUtil; ^EM##Ss_  
5 E DGl  
/** *.W ![%Be  
* @author treeroot A4 o'EQ?~  
* @since 2006-2-2 Ko2{[%  
* @version 1.0 VY Va8[}  
*/ e"[o2=v;5  
public class SelectionSort implements SortUtil.Sort { V mKMj'  
Hco [p+  
/* TJ2$ Z  
* (non-Javadoc) 3 LoB-4u?  
* v34XcA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v7xc01x  
*/ N\<M4 fn  
public void sort(int[] data) { a:v&pj+|<  
int temp; y$K!g&lGA  
for (int i = 0; i < data.length; i++) { v\0[B jhL?  
int lowIndex = i; h-Ffs  
for (int j = data.length - 1; j > i; j--) { VmV/~-<Z  
if (data[j] < data[lowIndex]) { !W .ooy5(  
lowIndex = j; D{ @x  
} h]vA%VuE'E  
} DHgEhf]  
SortUtil.swap(data,i,lowIndex); qZCA16  
} ?uOdqMJV  
} f!0*^d  
WPCaxA+l  
} Lc0^I<Y  
"P"~/<:)  
Shell排序: ?_}[@x  
$>]7NTP  
package org.rut.util.algorithm.support; gKn"e|A  
gtVI>D'(W  
import org.rut.util.algorithm.SortUtil; g' H!%<  
8L6!CP_!  
/** ?psvhB{O  
* @author treeroot UR:cBr  
* @since 2006-2-2 GC~Tfrf=r  
* @version 1.0 jrZM  
*/ IbF[nQ  
public class ShellSort implements SortUtil.Sort{ Mm+_>   
50Pz+:  
/* (non-Javadoc) #3\F<AJ<VB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *:aJlvk  
*/ aQ46euth  
public void sort(int[] data) { 3-Xum*)Y  
for(int i=data.length/2;i>2;i/=2){ [#M^:Q  
for(int j=0;j insertSort(data,j,i); 11Pm lzy  
} ` SZ^~O  
} j%#n}H  
insertSort(data,0,1); W`C2zbC  
} WENPS*0oS]  
ZG H2  
/** A +e ={-*  
* @param data K p ~x  
* @param j p4*VE5[?_+  
* @param i xQ-]Iw5  
*/ R<a7TkL4?  
private void insertSort(int[] data, int start, int inc) { RxjC sjg  
int temp; +F]X  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); {^1D|y  
} `Q' 0l},  
} B9&"/tT  
} ~?H _?}e  
~(~fuDT~O  
} {I&>`?7.  
?m}vDd  
快速排序: $NWXn,Y'  
N3!x7J7A  
package org.rut.util.algorithm.support; Y?{L:4cRX  
hdXdz aNS  
import org.rut.util.algorithm.SortUtil; F)z]QJOw  
4 ac2^`  
/** {AoH  
* @author treeroot \/xWsbG\  
* @since 2006-2-2 f-E]!\Pg  
* @version 1.0 Rs$k3   
*/ xrFFmQ<_W  
public class QuickSort implements SortUtil.Sort{ oe=^CeW"  
4. 7m*  
/* (non-Javadoc) ypSW9n  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1(CpTaa  
*/ $8kc1Q  
public void sort(int[] data) {  W>.KV7  
quickSort(data,0,data.length-1); F3HpDfy  
} K.Nun)<  
private void quickSort(int[] data,int i,int j){ 7hlgm7 ^  
int pivotIndex=(i+j)/2; $Y5R^Y  
file://swap d3v5^5kU  
SortUtil.swap(data,pivotIndex,j); \tc 4DS  
suC]  
int k=partition(data,i-1,j,data[j]); _VLc1svv  
SortUtil.swap(data,k,j); )$p<BLU  
if((k-i)>1) quickSort(data,i,k-1); jjN ]*{s  
if((j-k)>1) quickSort(data,k+1,j); swss#?.se  
s5F,*<  
} s2FJ^4  
/** sgW*0o  
* @param data %5?qS`/c(  
* @param i ] lE6:^V  
* @param j 0>} FNRC  
* @return h:\WW;s[B  
*/ C_mPw  
private int partition(int[] data, int l, int r,int pivot) { 6 9_etv  
do{ M0YV Qa  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 4D=p#KZ  
SortUtil.swap(data,l,r); gXBC= ?jl  
} ;7Cb!v1  
while(l SortUtil.swap(data,l,r); [xe(FFl+  
return l; r-&Rjg  
} ,_ }  
vPz$jeA  
} xdGmiHN  
ZCsL%(  
改进后的快速排序: ZV=O oL t,  
E%@,n9T~"  
package org.rut.util.algorithm.support; dtD)VNkBZ  
e"Kg/*Ji1  
import org.rut.util.algorithm.SortUtil; wqEO+7)S  
G;#-CT  
/** BQmHYar  
* @author treeroot CV&+^_j'k  
* @since 2006-2-2 wQ]!Y ?I  
* @version 1.0 FRqJ#yd]  
*/ {>$i)B  
public class ImprovedQuickSort implements SortUtil.Sort { \Jq$!foYx  
1W*%}!&Gm  
private static int MAX_STACK_SIZE=4096; I<yd=#:n  
private static int THRESHOLD=10; `p0+j  
/* (non-Javadoc) ++=t|ZS U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]Y@Db5S$T  
*/ *M6' GT1%c  
public void sort(int[] data) { LE#ko2#ke  
int[] stack=new int[MAX_STACK_SIZE]; nW#UBtZ  
*-0tj~)>  
int top=-1; YL*yiZ9  
int pivot; 4&]Sb}  
int pivotIndex,l,r; 8s^CE[TA  
O1!hSu&  
stack[++top]=0; 0$Rl78>(  
stack[++top]=data.length-1; GIG\bQSv2  
z !2-U  
while(top>0){ QlT{8uw )  
int j=stack[top--]; )%H@.;cD_r  
int i=stack[top--]; k<xPg5  
[HNWM/ff7+  
pivotIndex=(i+j)/2; =qG%h5]n  
pivot=data[pivotIndex]; 7:iTx;,v  
9HJrMX  
SortUtil.swap(data,pivotIndex,j); MtWzGE=?  
36MqEUjyB  
file://partition B q/<kEgM  
l=i-1; za$v I?ux  
r=j; !Q(xA,p  
do{ Lso4Z Z;  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); i~1bfl   
SortUtil.swap(data,l,r); Fb8~2N"3  
} hdW}._  
while(l SortUtil.swap(data,l,r); R<wPO-dX  
SortUtil.swap(data,l,j); `?@7T-v  
b/^i  
if((l-i)>THRESHOLD){ @q8h'@sX  
stack[++top]=i; _OR@S%$  
stack[++top]=l-1; l@:|OGD;8  
} J4Yu|E<&  
if((j-l)>THRESHOLD){ fviq}.  
stack[++top]=l+1; i|M^QKvF  
stack[++top]=j; %2)B.qTp&  
} Q)vf>LwC2S  
 %<[?;  
} +b O]9* g]  
file://new InsertSort().sort(data);  NW$_w  
insertSort(data); 2GRL`.1  
} MLVrL r t  
/** ,dyCuH!B  
* @param data ~%.<rc0  
*/ C|or2  
private void insertSort(int[] data) { bm`x;M^M  
int temp; X1LwIa>  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _o,Mji|  
} .lbo\v}2W  
} y+jOk6)W75  
} T-.Q  
CSu}_$wC#  
} Obj?,O  
pGO=3=O  
归并排序: ]|6)'L&]*s  
b"JJ3$D  
package org.rut.util.algorithm.support; uu5L9.i9  
Xu[(hT6  
import org.rut.util.algorithm.SortUtil; MTyBG rs(  
o'#ow(X  
/** A.[~}ywH  
* @author treeroot %t.L;G  
* @since 2006-2-2 S8_>Lw  
* @version 1.0 ^"  
*/ S! Z2aFj  
public class MergeSort implements SortUtil.Sort{ r0xmDJ@y  
]; CTr0  
/* (non-Javadoc) C~o\Q# *j  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6 +2M$3_U  
*/ u[Ij4h.  
public void sort(int[] data) { 8Pgw_ 21N1  
int[] temp=new int[data.length]; SO!|wag$  
mergeSort(data,temp,0,data.length-1); ,\]`X7r  
} 8(jUCD  
\7\7i-Vo  
private void mergeSort(int[] data,int[] temp,int l,int r){ 8? U!PW  
int mid=(l+r)/2; 4Y.o RB  
if(l==r) return ; /O*4/  
mergeSort(data,temp,l,mid); C]- !u Ly  
mergeSort(data,temp,mid+1,r); |``rSEXYs  
for(int i=l;i<=r;i++){ .5s#JL  
temp=data; gS VWv9+  
} 78u9> H  
int i1=l; :"im2J  
int i2=mid+1; |<2g^ZK)  
for(int cur=l;cur<=r;cur++){ :U{$G( <  
if(i1==mid+1) GJeP~   
data[cur]=temp[i2++]; 26K sP .-  
else if(i2>r) s+fjQo4  
data[cur]=temp[i1++]; Kn#CIFbBN  
else if(temp[i1] data[cur]=temp[i1++]; LA9'HC(5  
else $eSSW+8q"  
data[cur]=temp[i2++]; O_S%PX  
} $yoIz.?V  
} f6$$e+  
GxynLXWo>  
} V1]QuQ{&s  
Dr oa1_FX  
改进后的归并排序: Quts~Q  
pPD}>q  
package org.rut.util.algorithm.support; xj#anr  
<Na .6P  
import org.rut.util.algorithm.SortUtil; z&Kh$ $)[  
6[k7e!&  
/** .Xm?tC<   
* @author treeroot K'@lXA:  
* @since 2006-2-2 hN"cXz"/  
* @version 1.0 3!*qB-d  
*/ x o{y9VS  
public class ImprovedMergeSort implements SortUtil.Sort { :T9 P9<  
N~)RR {$w  
private static final int THRESHOLD = 10; Kt*kARN?  
N'@E^ rYc  
/* Ij{ K\{y  
* (non-Javadoc) |!?lwBs4  
* $E@U-=m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =3H*%  
*/ k;~*8i=%,\  
public void sort(int[] data) { ObzFh?W  
int[] temp=new int[data.length]; PJn|  
mergeSort(data,temp,0,data.length-1); 2E$K='H:,  
} v1aE[Q  
AcQmY?  
private void mergeSort(int[] data, int[] temp, int l, int r) { gK_#R]  
int i, j, k; b.#0{*/G  
int mid = (l + r) / 2; =c34MY(#X  
if (l == r) d&owS+B{48  
return; M/5+AsT  
if ((mid - l) >= THRESHOLD) tm|YUat$]r  
mergeSort(data, temp, l, mid); :={rPj-nU  
else #!>QXiyR  
insertSort(data, l, mid - l + 1); ?#obNQ"u]  
if ((r - mid) > THRESHOLD) k+% c8w 9  
mergeSort(data, temp, mid + 1, r); T$&vk#qr  
else KfkU_0R+~v  
insertSort(data, mid + 1, r - mid); vo!QJ  
{;^GKb+  
for (i = l; i <= mid; i++) { 1>'xmp+#  
temp = data; -E +LA  
} ?Hrj}K27  
for (j = 1; j <= r - mid; j++) { m+=L}[  
temp[r - j + 1] = data[j + mid]; "*HVL  
} !S}d?8I6  
int a = temp[l]; n qC@dHP  
int b = temp[r]; qbq.r&F&  
for (i = l, j = r, k = l; k <= r; k++) {  8\Uy  
if (a < b) { h~-cnAMt  
data[k] = temp[i++]; `s|^  
a = temp; v"8i2+j  
} else { EHF dQ0gIa  
data[k] = temp[j--]; \}EJtux q  
b = temp[j]; q!Q*T^-rO  
} i0g/'ZP  
} I2^@>/p8\(  
} F [S'l  
rGgP9 (  
/** u_'XUJ32!  
* @param data )tp;2rJ/  
* @param l ]r@CmwC  
* @param i $l/w.z  
*/ %Y-KjSs+l  
private void insertSort(int[] data, int start, int len) { )=Ens=>Z  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); C)(/NGf  
} !9]q+XefJ  
} :P?zy|aBi  
} |TQa=  
} Rwe!xY^d8  
w@i;<LY.  
堆排序: W;^6=(&xn  
#%{x*y:Ms  
package org.rut.util.algorithm.support; .gs:.X)TG9  
R&@NFin  
import org.rut.util.algorithm.SortUtil; abtYa  
^<`uyY))Q  
/** 5]F4.sa  
* @author treeroot ;uyQR8  
* @since 2006-2-2 +Cs.v.GA5  
* @version 1.0 >goG\y  
*/ 9ohO-t$XkY  
public class HeapSort implements SortUtil.Sort{ ot; ]?M  
SS7C|*-Zd  
/* (non-Javadoc) D22jWm2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UYkuz  
*/ U`kO<ztk  
public void sort(int[] data) { gI{56Z  
MaxHeap h=new MaxHeap(); Sp./*h\}  
h.init(data); "Ax#x  
for(int i=0;i h.remove(); p.RSH$]  
System.arraycopy(h.queue,1,data,0,data.length); aSH =|Jnc  
} 6>F1!Q  
miEf<<L#z  
private static class MaxHeap{ VdE$ig@  
@q<d^]po  
void init(int[] data){ is6d:p  
this.queue=new int[data.length+1]; LR% P\~  
for(int i=0;i queue[++size]=data; mt]50}eK  
fixUp(size); ?(E?oJ)(  
} jU!ibs}R3  
} t6! B  
GK[[e~#u  
private int size=0; QB6. o6  
6(-c$d`C.0  
private int[] queue; ,'a[1RN  
3&5AbIZ  
public int get() { [9,34/i  
return queue[1]; my*E7[  
} , %$Cfu  
YE[{Y(5;q  
public void remove() { 9YVr9BM'K  
SortUtil.swap(queue,1,size--); 6UAw9 'X8  
fixDown(1); K(heeZUt  
} [5wU0~>'  
file://fixdown ucX!6)Op  
private void fixDown(int k) { '$y.`/$  
int j; w(UZmZb}  
while ((j = k << 1) <= size) { oG' 'my#3  
if (j < size %26amp;%26amp; queue[j] j++; =0mXTY1  
if (queue[k]>queue[j]) file://不用交换 $x;(C[  
break; &O|qx~(  
SortUtil.swap(queue,j,k); UmOK7SPi  
k = j; qd@Fb*  
} Bt(U,nFB  
} (/gMtIw  
private void fixUp(int k) { )g[7XB/w  
while (k > 1) { (F'?c1  
int j = k >> 1; 6;p"xC-  
if (queue[j]>queue[k]) *#c^.4$'  
break; M(#]NTr ~4  
SortUtil.swap(queue,j,k); Qo])A6$IU  
k = j; 3im2 `n  
} )mE67{YJh~  
} mL]5Tnc  
BBHoD:l  
} by* v($  
G ;  
} ;-d2~1$  
y0\=F  
SortUtil: h45RwQ5Z  
=`MMB|{6  
package org.rut.util.algorithm; != u S  
Z8q*XpUH  
import org.rut.util.algorithm.support.BubbleSort; TM0DR'.  
import org.rut.util.algorithm.support.HeapSort; l4Qv$  
import org.rut.util.algorithm.support.ImprovedMergeSort; &C.m*^`^  
import org.rut.util.algorithm.support.ImprovedQuickSort; RxXiSc`^z  
import org.rut.util.algorithm.support.InsertSort; S@6 :H"  
import org.rut.util.algorithm.support.MergeSort; {!37w[s~  
import org.rut.util.algorithm.support.QuickSort; Ctpc]lJ}  
import org.rut.util.algorithm.support.SelectionSort; u#`'|ko \9  
import org.rut.util.algorithm.support.ShellSort; z[*Y%o8-r  
L; 'C5#GN  
/** ?v$1 Fc55  
* @author treeroot [A46WF>L  
* @since 2006-2-2 HRW }Yl  
* @version 1.0 W24n%Ps  
*/ ge!Asm K  
public class SortUtil { GL'zNQP-  
public final static int INSERT = 1; * Fz#x{zt  
public final static int BUBBLE = 2; ErY-`8U"  
public final static int SELECTION = 3; f$]ttU U  
public final static int SHELL = 4; </33>Fu)  
public final static int QUICK = 5; ( Y)a`[B  
public final static int IMPROVED_QUICK = 6; n_1,-(t  
public final static int MERGE = 7; zJT,Hv .  
public final static int IMPROVED_MERGE = 8; Qm2(Z8Gh  
public final static int HEAP = 9; 'Z`fZ5q  
_VI3b$  
public static void sort(int[] data) { ~=9]M.$  
sort(data, IMPROVED_QUICK); )ioIn`g^-  
} fhbILg  
private static String[] name={ ;ksxz  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 8I%N^G  
}; Xr$hQbl5D  
d{~Qd|<rr  
private static Sort[] impl=new Sort[]{ ^=Egf?|[  
new InsertSort(),  :IX_}|  
new BubbleSort(),  cvO;xR  
new SelectionSort(), <G#z;]N  
new ShellSort(), #Q$`3rr  
new QuickSort(), m`H9^w%W  
new ImprovedQuickSort(), QliP9-im3  
new MergeSort(), XaR(~2  
new ImprovedMergeSort(), g@IYD  
new HeapSort() wm s@1~I  
}; rK r2 K'  
IXt cHAgX  
public static String toString(int algorithm){ UCS`09KNJ  
return name[algorithm-1]; =%R|@lz_x  
} f f_| 3G  
$-;x8O]u  
public static void sort(int[] data, int algorithm) { +d/^0^(D\5  
impl[algorithm-1].sort(data); \X0wr%I  
} b%M|R%)]  
[Se0+\,&  
public static interface Sort { 8!VF b+  
public void sort(int[] data); 6jo+i[h  
} ?KtvXTy{m  
<nE|Y@S  
public static void swap(int[] data, int i, int j) { <n|.Z-gF\  
int temp = data; Q5pm^X._j  
data = data[j]; jN^09T49  
data[j] = temp; ~[9(}UM  
} 70{fl 4J5  
} |,OTGZgc  
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