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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。 ?tcbiXRG+  
插入排序: 1/n3qJyx2}  
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package org.rut.util.algorithm.support; ,d7@*>T&  
!CWqI)=  
import org.rut.util.algorithm.SortUtil; Cw_<t  
/** R[V%59#{Z  
* @author treeroot x .q%O1  
* @since 2006-2-2 CUG6|qu  
* @version 1.0 q8oEb  
*/ + $-a:zx`l  
public class InsertSort implements SortUtil.Sort{ | @YN\g K;  
7XY C.g  
/* (non-Javadoc) YJ9_cA'A  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k@2gw]y"  
*/ I#0.72:[  
public void sort(int[] data) { Z-Uq89[HZ  
int temp; ^uj+d"a)  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); exhF5,AW|K  
} Qhr:d`@^]  
} 4k#6)e  
} zumRbrz  
M3Z yf  
} , ^nUi c  
S `[8TZ  
冒泡排序: aX|`G]PhdI  
OjCT%6hy;  
package org.rut.util.algorithm.support; _Sg29qFK  
Fh "S[e  
import org.rut.util.algorithm.SortUtil; _EY :vv  
H(AYtnvB  
/** 1pn167IQL  
* @author treeroot .D)}MyKnu  
* @since 2006-2-2 rQWft r^  
* @version 1.0 JUE>g8\b  
*/ uPqPoI>N!  
public class BubbleSort implements SortUtil.Sort{ ._yr7uY[M  
0Zq" -  
/* (non-Javadoc) HwcGbbX)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eAqQ~)8^  
*/ 'e&4#VLH^  
public void sort(int[] data) { FLWz7Rj  
int temp; n Au>i<  
for(int i=0;i for(int j=data.length-1;j>i;j--){ <Z&gAqj 2  
if(data[j] SortUtil.swap(data,j,j-1); BoXCc"q[  
} %*uqtw8  
} nuQ"\ G  
} KDhHp^IXQ  
} =19]a  
=_XcG!"  
} 1#@'U90xf  
e7;]+pN]J  
选择排序: sJD"u4#y  
}'{(rU  
package org.rut.util.algorithm.support; |QY+vO7fxj  
&M2x`  
import org.rut.util.algorithm.SortUtil; /i"EVN`t  
sq^,l6es>  
/** bw4b'9cK  
* @author treeroot 0'~ ?u'  
* @since 2006-2-2 @bPJ}C  
* @version 1.0 wD<G+Y}  
*/ o ).pF">jh  
public class SelectionSort implements SortUtil.Sort { *rbayH  
N\0Sq-.  
/* OS,$}I[`8  
* (non-Javadoc) k >MgrtJI  
* )uaB^L1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #Y:/^Q$_qS  
*/ ZibODs=f;  
public void sort(int[] data) { UX0tI0.tg  
int temp; *iR`mZb  
for (int i = 0; i < data.length; i++) { QXrK-&fju  
int lowIndex = i; wHCsEp(  
for (int j = data.length - 1; j > i; j--) { 8 jT"HZB6  
if (data[j] < data[lowIndex]) { ' ZJ6p0  
lowIndex = j; u+V;r)J{  
} c:iMbJOn#  
} #:yZJS9f9  
SortUtil.swap(data,i,lowIndex); nO/5X>A,Zw  
} <@yyx7  
} vxgm0ZOMN  
$~-j-0 \m  
} yTEuf@  
6nwO:?1o9  
Shell排序: md_Ld /  
J@5 OZFMZ  
package org.rut.util.algorithm.support; OU##A:gI  
nYe}d!  
import org.rut.util.algorithm.SortUtil; |EApKxaKD  
>5j/4Ly  
/** (-#{qkA  
* @author treeroot +`+a9+=  
* @since 2006-2-2 D3Mce|t^  
* @version 1.0 aT0 y  
*/ cnj_tC=zt  
public class ShellSort implements SortUtil.Sort{ Gnw>%f1@u  
nGf@zJDb  
/* (non-Javadoc) ~)Z`Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g %Am[fb  
*/ M}vPWWcl  
public void sort(int[] data) { `+6HHtF  
for(int i=data.length/2;i>2;i/=2){ A gPg0(G  
for(int j=0;j insertSort(data,j,i); V+8+ 17^  
} HqgH\  
} NanU%# &  
insertSort(data,0,1); I|M*yObl6  
} >!2'|y^  
ZQ:Y5 ph  
/** ooAZ,l=8  
* @param data ]+Vcuzq/  
* @param j `=*svrmS  
* @param i l ghzd6  
*/ Mc8^{br61  
private void insertSort(int[] data, int start, int inc) { 83h3C EQ  
int temp; k8ck#%#}Wu  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 0 QpWt  
} Z/x1?{z  
} yx-"YV}5  
} -"<f(  
V1fPH;  
} HfF$>Z'kM  
!d^`YEfE  
快速排序: cBA[D~s  
Nt'5}  
package org.rut.util.algorithm.support; zk]~cG5dT/  
+~@Y#>+./l  
import org.rut.util.algorithm.SortUtil; l\5 NuCgRY  
IlrmXSr  
/** ' 4"L;){:L  
* @author treeroot O^GXFz^  
* @since 2006-2-2 s,RS}ek~|  
* @version 1.0 3:gk:j#  
*/ 5Zov< +kE  
public class QuickSort implements SortUtil.Sort{ Px8E~X<@  
BCbW;w8aI  
/* (non-Javadoc) /[s$A?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ra&C|"~E  
*/ %F~ dmA#:  
public void sort(int[] data) { ~IXfID!8  
quickSort(data,0,data.length-1); jt3SA [cy  
} (nzt}i0  
private void quickSort(int[] data,int i,int j){ V6k9L*VP  
int pivotIndex=(i+j)/2; OrBFe *2y  
file://swap c>g%oE  
SortUtil.swap(data,pivotIndex,j); B]vj1m`9  
6PH*]#PfoD  
int k=partition(data,i-1,j,data[j]); j;3o9!.s:  
SortUtil.swap(data,k,j); j7d;1 zB+G  
if((k-i)>1) quickSort(data,i,k-1); cG?266{g  
if((j-k)>1) quickSort(data,k+1,j); $d"+Njd  
erqB/C  
} NO$Nl/XM  
/** EkX6> mo  
* @param data 0#JBz\  
* @param i %c0;Bb-  
* @param j 5f5ZfK3<i  
* @return &<V~s/n=6?  
*/ J 0 P  
private int partition(int[] data, int l, int r,int pivot) { PG!vn@b6  
do{ _X[c19q  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); <fJ\AP5  
SortUtil.swap(data,l,r); vpDs5tUl  
} hG^23FiN  
while(l SortUtil.swap(data,l,r); 3Z0\I\E  
return l; xpM~* Gpm  
} )N<!3yOz  
tTgW^&B  
} if'4MDl  
.tNB07=7  
改进后的快速排序: *v+ fkg  
zYL^e @  
package org.rut.util.algorithm.support; 8'_Y=7b0Nw  
^Ram8fW  
import org.rut.util.algorithm.SortUtil; w(D9'  
hd~rC*I  
/** rx/6x(3  
* @author treeroot 2. _cEY34  
* @since 2006-2-2 9m6j?CFG}  
* @version 1.0 @-}]~|<  
*/ 3[0:,^a  
public class ImprovedQuickSort implements SortUtil.Sort { Ei-OuDM;)  
(XJQ$n  
private static int MAX_STACK_SIZE=4096; l&B'.6XKs  
private static int THRESHOLD=10; ~}w 8UO  
/* (non-Javadoc) H~Cfni;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WQx;tX  
*/ KfNXX>'  
public void sort(int[] data) { %u}sVRJ  
int[] stack=new int[MAX_STACK_SIZE]; :X f3wP=  
Vd4osBu{fY  
int top=-1; ;"Y6&YP<  
int pivot; &UR/Txnu  
int pivotIndex,l,r; U:r2hqegd  
OT i3T1&  
stack[++top]=0; w3>|mDA}I  
stack[++top]=data.length-1; vvxj{fxb)  
4(82dmKO  
while(top>0){ }3 }=tN5  
int j=stack[top--]; ([~`{,sv  
int i=stack[top--]; -cgukl4Va  
1tdCzbEn+  
pivotIndex=(i+j)/2; 27:x5g?  
pivot=data[pivotIndex]; "=.|QKC1`  
 ZsZ1  
SortUtil.swap(data,pivotIndex,j); :(Bi {cw  
^~l<N@  
file://partition (rn x56I$  
l=i-1; [3Rj?z"S  
r=j; 5b p"dIe  
do{ &v,p_'k  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); U@nwSfp:G  
SortUtil.swap(data,l,r); hT"K}d;X  
} E6M: ^p*<  
while(l SortUtil.swap(data,l,r); _ GSw\r  
SortUtil.swap(data,l,j); [<QWTMjR  
'Aj>+H<B  
if((l-i)>THRESHOLD){ 99K+7G\{  
stack[++top]=i; wjOAgOC  
stack[++top]=l-1; S!_?# ^t  
} ISew]R2  
if((j-l)>THRESHOLD){ 7`HUwu  
stack[++top]=l+1; B:cOcd?p  
stack[++top]=j; fx:KH:q3  
} (N4(r<o;  
h>0<@UP  
} %<yM=1~>  
file://new InsertSort().sort(data); M7,MxwZ0k  
insertSort(data); u7WM6X  
} 4sjr\9IDC  
/** Bq_P?Q+\  
* @param data 1o>R\g3  
*/ IviQ)h p  
private void insertSort(int[] data) { 6a?p?I K^  
int temp; o[hP&9>q  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); rrYp^xLa`  
} P qLqF5`S  
} ;NE/!!  
} &tCtCk%{j  
ZnLk :6'  
} g/p9"eBpq  
9'g{<(R]  
归并排序: 2j1v.%  
\[1CDz=}1  
package org.rut.util.algorithm.support; r:4IKuTR  
~79Qg{+]N  
import org.rut.util.algorithm.SortUtil; Tj5@OcA$  
J5_Y\@  
/** N'P,QiR,z<  
* @author treeroot .+}o'rU  
* @since 2006-2-2 !!%[JR)cS  
* @version 1.0 Wy*7jB  
*/ 3z92Gy5cr  
public class MergeSort implements SortUtil.Sort{ % T\N@  
sA-W^*+  
/* (non-Javadoc) z/k~+-6O  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NqE7[wH  
*/ -Jo :+].  
public void sort(int[] data) { NP'Ke:  
int[] temp=new int[data.length]; ?^ezEpW  
mergeSort(data,temp,0,data.length-1); `sy &dyM  
} )=nPM`Jn.  
!r obau7  
private void mergeSort(int[] data,int[] temp,int l,int r){ )+4}Ix/q  
int mid=(l+r)/2; O)%kl  
if(l==r) return ; [.xk  
mergeSort(data,temp,l,mid); cjC6\.+l3  
mergeSort(data,temp,mid+1,r); =v$s+`cP  
for(int i=l;i<=r;i++){ KGmc*Jwy  
temp=data; "UGj4^1f  
} =^y{@[p`(  
int i1=l; Z !25xqNCd  
int i2=mid+1; p6*a1^lU6  
for(int cur=l;cur<=r;cur++){ p]z54 ~  
if(i1==mid+1) /3 Ix,7  
data[cur]=temp[i2++]; DPQGh`J  
else if(i2>r) MI'l4<>u  
data[cur]=temp[i1++]; W<|K  
else if(temp[i1] data[cur]=temp[i1++]; tO>OD#  
else H9Q7({v  
data[cur]=temp[i2++]; uf'P9MA}>  
} >"g<-!p@  
} 8~(+[[TQ@  
>ydb?  
} y{Y+2}Dv/  
[Pwo,L,)  
改进后的归并排序: |z.GSI_!)  
Jo aDX ,  
package org.rut.util.algorithm.support; |\n)<r_  
X#I`(iHY  
import org.rut.util.algorithm.SortUtil; qL5#.bR  
;AGs1j  
/** 3k*:B~1  
* @author treeroot U"y'Kd  
* @since 2006-2-2 _7.GzQJ  
* @version 1.0 |+xtFe  
*/ ca3BJWY}J  
public class ImprovedMergeSort implements SortUtil.Sort { yb{{ z@  
GHC?Tp   
private static final int THRESHOLD = 10; (<R\  
|5B,cB_  
/* p/WH#4Xdr  
* (non-Javadoc) 8 ]06!7S}  
* *tfDXQ^mN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b}&7~4zw  
*/ 1;:t~Y  
public void sort(int[] data) { nR@,ouB-$  
int[] temp=new int[data.length]; gLSG:7m@  
mergeSort(data,temp,0,data.length-1); d?&!y]RS#  
} ?I2k6%a  
7|M$W(P  
private void mergeSort(int[] data, int[] temp, int l, int r) { ~? FrI  
int i, j, k; 5Jhbf2-  
int mid = (l + r) / 2; JdUz!=I  
if (l == r) r5!x,{E6  
return; g3~~"`2  
if ((mid - l) >= THRESHOLD) lc3S|4  
mergeSort(data, temp, l, mid); 3pTS@  
else kV:FJx0xP  
insertSort(data, l, mid - l + 1); ;Ma/b=Y  
if ((r - mid) > THRESHOLD) F'>GN}n  
mergeSort(data, temp, mid + 1, r); a j@C0  
else T5dUJR2k$  
insertSort(data, mid + 1, r - mid); $dZ>bXUw:  
5}MlZp  
for (i = l; i <= mid; i++) { ELrZ8&5G  
temp = data; "gbnLKs  
} q?Ku}eID3  
for (j = 1; j <= r - mid; j++) { UC+7-y,  
temp[r - j + 1] = data[j + mid]; `mKlv~$1^  
} > 0Twr  
int a = temp[l]; BsK|:MM]  
int b = temp[r]; &ap`}^8pM  
for (i = l, j = r, k = l; k <= r; k++) { vpeBQ=2\  
if (a < b) { 6a%:zgkOpu  
data[k] = temp[i++]; -_EY$ ?4  
a = temp; )`s;~_ZZ  
} else { uH ny ]  
data[k] = temp[j--]; hViprhC  
b = temp[j]; jW1YTQ  
} wj#J>C2]  
} fzRyG-cEpj  
} @!":(@3[  
| z#m  
/** YV1a 3  
* @param data gY>;|),  
* @param l 65waq~#  
* @param i uP(B<NfL:'  
*/ zr3q>]oma  
private void insertSort(int[] data, int start, int len) { cZaF f?]k  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); A{4G@k+#d  
} Mm5U`mB  
} ~}$\B^z+  
} q?;*g@t  
} 4/HY[FT  
|6sT,/6  
堆排序: dXhCyr%"6  
@~$F;M=.*  
package org.rut.util.algorithm.support; Ox7uG{t$#  
- - i&"  
import org.rut.util.algorithm.SortUtil; 9ra HSzK@d  
;# R3k  
/** nIV.9#~&  
* @author treeroot %="~\1y  
* @since 2006-2-2 5Cc6 , ]  
* @version 1.0 Dm|gSv8d,  
*/ y$j1?7  
public class HeapSort implements SortUtil.Sort{ QIij>!c4  
<TLGfA1bC  
/* (non-Javadoc) f[JI/H>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d s|8lz,  
*/ ?jNF6z*M6  
public void sort(int[] data) { qeQC&U y;  
MaxHeap h=new MaxHeap(); fuNl4BU  
h.init(data); &*(n<5 wt  
for(int i=0;i h.remove(); 2I]]WBW#:  
System.arraycopy(h.queue,1,data,0,data.length); rV8(ia  
} #$rf-E5g-K  
00`bL  
private static class MaxHeap{ gro7*<  
rPiiC/T.`  
void init(int[] data){ ~@[(N]=q  
this.queue=new int[data.length+1]; '?{0z!!  
for(int i=0;i queue[++size]=data; ->&BcPLn  
fixUp(size); LKR==;qn  
} \#\`!L[1  
} F* 3G _V  
x1 ;rb8  
private int size=0; &5kZ{,-eM  
gB/;clCdX)  
private int[] queue;  &7L~PZ  
/e.FY9  
public int get() { ur/Oc24i1n  
return queue[1]; U;';"9C2>  
} jo,6Aog|u  
\3t,|%v  
public void remove() { :kWZSN8.D  
SortUtil.swap(queue,1,size--); =w',-+@  
fixDown(1); I;Al? &uw  
} \yih 1Om>~  
file://fixdown U9<_6Bsd  
private void fixDown(int k) { _-@ZOhw&  
int j; n\Z^K  
while ((j = k << 1) <= size) { q?;N7P  
if (j < size %26amp;%26amp; queue[j] j++; I6K7!+;2  
if (queue[k]>queue[j]) file://不用交换 -!XrwQyk  
break; 3 R5%N ~  
SortUtil.swap(queue,j,k); Ff[H>Lp~  
k = j; u{g]gA8s  
} ?JuX~{{. L  
} **T:eI+  
private void fixUp(int k) { "[awmZ:wo  
while (k > 1) { =:4 '  
int j = k >> 1; v\fzO#vj  
if (queue[j]>queue[k]) J*}VV9H  
break; /lf\ E=  
SortUtil.swap(queue,j,k); <8iYL`3  
k = j; g/OI|1a  
} ISpeV  
} e ZynF<i  
!?BW_vY  
}  AGh~8[  
f|X[gL,B  
} P7}t lHX  
bHO7* E  
SortUtil: :0nK`$'  
pt=7~+r  
package org.rut.util.algorithm; (3AYy0J%  
#t=[w  
import org.rut.util.algorithm.support.BubbleSort; hA@zoIoe  
import org.rut.util.algorithm.support.HeapSort; nped  
import org.rut.util.algorithm.support.ImprovedMergeSort; lN);~|IOv7  
import org.rut.util.algorithm.support.ImprovedQuickSort; PASuf.U$"  
import org.rut.util.algorithm.support.InsertSort; d-hbvLn  
import org.rut.util.algorithm.support.MergeSort; XXXl jh6  
import org.rut.util.algorithm.support.QuickSort; s0gJ f[  
import org.rut.util.algorithm.support.SelectionSort; <Cu'!h_nL  
import org.rut.util.algorithm.support.ShellSort; B:e.gtM5  
vAi"$e  
/** vz6SCGg,  
* @author treeroot JR/W9i  
* @since 2006-2-2 ''_,S,.a20  
* @version 1.0 1pWk9Xuh  
*/ "=9-i-K9B  
public class SortUtil { .JNcY]V#  
public final static int INSERT = 1; XQK^$Iq]V  
public final static int BUBBLE = 2; A)OdQFet(  
public final static int SELECTION = 3; <"N:rn{Qq  
public final static int SHELL = 4; 9Kc0&?q@D  
public final static int QUICK = 5; 1W*V2`0>  
public final static int IMPROVED_QUICK = 6; h{\t*U 54'  
public final static int MERGE = 7;  W|lH   
public final static int IMPROVED_MERGE = 8; +z+ F-  
public final static int HEAP = 9; a4%`"  
)y6QAp  
public static void sort(int[] data) { k - FB  
sort(data, IMPROVED_QUICK); ,(6)ghr  
} T0g0jr{  
private static String[] name={ }|AX_=a  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" L?C\Q^0"`G  
}; |Es0[cU  
Ny[Q T*nV  
private static Sort[] impl=new Sort[]{ (viWY  
new InsertSort(), =ntft SH  
new BubbleSort(), KCE=|*6::|  
new SelectionSort(), 5n:nZ_D  
new ShellSort(), Og +)J9#  
new QuickSort(), bk.*k~_  
new ImprovedQuickSort(), %WZ$]M?q  
new MergeSort(), I[@ts!YD  
new ImprovedMergeSort(), ?vvG)nW  
new HeapSort() %yeu"  
}; 6Ux[,]G K  
'[%jjUU  
public static String toString(int algorithm){ 1bd$XnU  
return name[algorithm-1]; dQ,Q+ON>  
} ebzzzmwo  
 1y 7y0V  
public static void sort(int[] data, int algorithm) { X|,["Az 8  
impl[algorithm-1].sort(data); Pv~:gP  
} ]Z=Ij gr$  
(/-lV&eR  
public static interface Sort { v3 -5"q!Sq  
public void sort(int[] data); AHq M7+r9  
} b)d^ `J  
B`#*o<eb  
public static void swap(int[] data, int i, int j) { 2_ wv C  
int temp = data; ?gU}[]  
data = data[j]; _wmI(+_  
data[j] = temp; HV8I nodi  
} ?5`{7daot  
} V- /YNRV  
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