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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。 uvA(Rn  
插入排序: c0 WFlj9b  
@gSkROCdC)  
package org.rut.util.algorithm.support; Bfd-:`Jk  
j|e[s ? d  
import org.rut.util.algorithm.SortUtil; X-B8MoG|  
/** nB5Am^bP  
* @author treeroot wE).>  
* @since 2006-2-2 x "(9II*  
* @version 1.0 T ^JuZG  
*/ ^t[HoFRa  
public class InsertSort implements SortUtil.Sort{ +dkS/b  
?G? gy2  
/* (non-Javadoc) l oqvi  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Gowp <9 F  
*/ a-n4:QT  
public void sort(int[] data) { iS@\ =CK  
int temp; |)W!jC&k  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Ak~4|w-  
} Oe1 t\  
} tL0`Rvl  
} TD04/ ISHT  
@<_`2eW'/R  
} =z:U~D  
P ,K\  
冒泡排序: NE"jh_m-  
AH.9A_dG  
package org.rut.util.algorithm.support; xfSG~csoz  
*rqm8z50a  
import org.rut.util.algorithm.SortUtil; R#4 ^s  
2r ];V'r  
/** zL s^,x  
* @author treeroot !;>(i e\  
* @since 2006-2-2 {aN(d3c  
* @version 1.0 )%du@a8  
*/ }gsO&g"8  
public class BubbleSort implements SortUtil.Sort{ "uu)2Xe  
]2+g&ox4'  
/* (non-Javadoc) hbuZaxo<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r3I,11B  
*/ 4Y tk!oS`  
public void sort(int[] data) { !W1eUY  
int temp; GH'O! }  
for(int i=0;i for(int j=data.length-1;j>i;j--){ {TZE/A3D,  
if(data[j] SortUtil.swap(data,j,j-1); N_C_O$j  
} <?$kI>Ot  
} H?}wl%  
} Kla:e[{  
} um8AdiK  
^{[`=P'/  
} U  5`y  
@~jxG%y86  
选择排序: zj]b&In6;  
)LswSV  
package org.rut.util.algorithm.support; ~Sy-ga J  
Jm![W8L  
import org.rut.util.algorithm.SortUtil; gw Qvao  
A|<;  
/** |#TXE|#ux  
* @author treeroot $cK^23H/Fj  
* @since 2006-2-2 7;HUE!5,^l  
* @version 1.0 PW_`qP:  
*/ $(>f8)Uku(  
public class SelectionSort implements SortUtil.Sort { vmKT F!;  
T 2bnzI i  
/* ) Ypz!  
* (non-Javadoc) X9'xn 0n;  
* s!h5hwBY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1<uwU(  
*/ B- Y+F  
public void sort(int[] data) { Mn"/#tXL-  
int temp; Riql,g/  
for (int i = 0; i < data.length; i++) { h3J*1  
int lowIndex = i; |vy]8?Ak  
for (int j = data.length - 1; j > i; j--) { Tkrx7C s(  
if (data[j] < data[lowIndex]) { !C7<sZ`C  
lowIndex = j; -,>:DUN2  
} ",Wf uz  
} Pi%tsKk%  
SortUtil.swap(data,i,lowIndex); \o9@>&2  
} 6H;kJHn  
} $T*KaX\{B  
u[t>Tg2R  
} y<r44a_!  
onzA7Gre  
Shell排序: q[boWW  
$DV-Ieb  
package org.rut.util.algorithm.support; ~'f8L #[M  
3@X|Gs'_S  
import org.rut.util.algorithm.SortUtil; fI[dhd6  
A*Q[k 9B  
/** r"]Oe$[#  
* @author treeroot z1vni'%J  
* @since 2006-2-2 4 ? {*(  
* @version 1.0 CTU9~~Xk  
*/ s<{GpWT8  
public class ShellSort implements SortUtil.Sort{ zMU68vwM  
Orc>.~+f%A  
/* (non-Javadoc) {@\/a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A}eOR=E  
*/ ocP*\NR  
public void sort(int[] data) { YnxU(v'\  
for(int i=data.length/2;i>2;i/=2){ NhtEW0xCr  
for(int j=0;j insertSort(data,j,i); J_/05( 48  
} 1OPfRDn.bk  
} 8g5.7{ky  
insertSort(data,0,1); [Ye5Y?  
} ~D!ESe*=  
8Xk Ik7  
/** Qy%xL9  
* @param data sVD([`Nmc  
* @param j j}RM.C\7  
* @param i akrCs&Kka5  
*/ tD^a5qPh  
private void insertSort(int[] data, int start, int inc) { ^HoJ.oC/  
int temp; 5|m9:Hv[#  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); J]]\&MtaO  
} u p~@?t2  
} d:3= 1x  
} <|dj^.^  
C!kbZTO[p"  
} P59uALi  
c.6QhE  
快速排序: ,|QU] E @  
Pd& ,G$l  
package org.rut.util.algorithm.support; /]l f>\x1  
s|p(KWo2U  
import org.rut.util.algorithm.SortUtil; Wlxk  
5YLho2h38!  
/** xx}'l:}2 ]  
* @author treeroot 'T{pdEn8u  
* @since 2006-2-2 6fQ*X~| p  
* @version 1.0 PJ6$);9}6  
*/ k#-[ M.i  
public class QuickSort implements SortUtil.Sort{ p|;o5j{  
=~;zVP   
/* (non-Javadoc) ep`/:iYW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @s?oJpo  
*/ {!tOI  
public void sort(int[] data) { %$\}z( G  
quickSort(data,0,data.length-1); fX$6;Ae  
} b`?M9f5  
private void quickSort(int[] data,int i,int j){ ILIRI[7 (  
int pivotIndex=(i+j)/2; ;q^,[(8  
file://swap =/f74s t  
SortUtil.swap(data,pivotIndex,j); MSF Nw  
/^8t'Jjd,  
int k=partition(data,i-1,j,data[j]); $$/S8LmmK  
SortUtil.swap(data,k,j); @>Biyb  
if((k-i)>1) quickSort(data,i,k-1); @]yQJuXA&Z  
if((j-k)>1) quickSort(data,k+1,j); 6vZt43"m?\  
I BF.&[[S  
} Q)9369<A  
/** [y$j9  
* @param data  MbM :3  
* @param i ),z,LU Yf  
* @param j 2@4MC`&  
* @return bv_AJ4gS  
*/ r ufRaar  
private int partition(int[] data, int l, int r,int pivot) { 8Q +TE;  
do{ :hi$}xHa  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 'fX er!L}  
SortUtil.swap(data,l,r); ~mW>_[RT;  
} mrX}\p   
while(l SortUtil.swap(data,l,r); H?ieNXP7{  
return l; ~ 6TfW~V  
} X{4xm,B/  
ta2z  
} 78\\8*  
#NSaY+V  
改进后的快速排序: #0xm3rFy4  
w2s,  
package org.rut.util.algorithm.support; >l6XZQ >  
@)+i{Niuv  
import org.rut.util.algorithm.SortUtil; C3^X1F0  
fdvi}SS8  
/** ((n5';|N  
* @author treeroot  ; \Y-  
* @since 2006-2-2 $K;_Wf  
* @version 1.0 x Xl$Mp7  
*/ eDvXU_yA  
public class ImprovedQuickSort implements SortUtil.Sort { {_+>"esc  
c M|af#o  
private static int MAX_STACK_SIZE=4096; G`&'Bt{Z*  
private static int THRESHOLD=10; NN?Bi=&9  
/* (non-Javadoc) E]D4']  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #{.pQi})  
*/ ^$3w&$K*  
public void sort(int[] data) { a^(S!I  
int[] stack=new int[MAX_STACK_SIZE]; 8j({=xbg&  
^2(";.m  
int top=-1; Yk x&6M@t  
int pivot; D}3cW2!9  
int pivotIndex,l,r; |J @|  
]g>T9,)l  
stack[++top]=0; qM+!f2t  
stack[++top]=data.length-1; L+`}euu5  
c'>8pd  
while(top>0){ 0^_)OsFA  
int j=stack[top--]; ">v_uq a  
int i=stack[top--]; PLl x~A  
#nt<j2}m  
pivotIndex=(i+j)/2; <L[  *hp  
pivot=data[pivotIndex]; Zz wZ, (  
9~*_(yjF  
SortUtil.swap(data,pivotIndex,j); % DHP  
$Ykp8u,(  
file://partition 4p0IBfVG  
l=i-1; D<$j`r  
r=j; LK oM\g(  
do{ V_ avaE  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); \:18Uoe7  
SortUtil.swap(data,l,r); "y3dwSS  
} ZnxOa  
while(l SortUtil.swap(data,l,r); .'+|>6eU  
SortUtil.swap(data,l,j); \3 O-} n1S  
,DW0A//  
if((l-i)>THRESHOLD){ Ji)a%j1V9  
stack[++top]=i; CgaB)`.  
stack[++top]=l-1; 6-Vl#Lyb  
} w96j,rEC  
if((j-l)>THRESHOLD){ S@l a.0HDA  
stack[++top]=l+1; %u<&^8EL+#  
stack[++top]=j; ueS[sN!  
} U{.+*e18  
'R-JQ E-]  
} ;FIMCJS  
file://new InsertSort().sort(data); FlM.D u  
insertSort(data); "Hsq<oV8  
} Yn?2,^?N  
/** *+zy\AhkP  
* @param data @/Wty@PU  
*/ S(YHwH":  
private void insertSort(int[] data) { lu9Ir>c  
int temp; $rV:&A  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {&Gk.ODI7  
} MWp\D#H  
} *U5> j#,  
} p3'mJ3MA  
*]DJAF]  
} XJV3oj   
<yb=!  
归并排序: HtS1N}@  
rVIb'sa  
package org.rut.util.algorithm.support; /s-jR]#VA  
5O4&BxQ~}  
import org.rut.util.algorithm.SortUtil; t8wz'[z  
-;DE&~p  
/** oVxV,oH(  
* @author treeroot tkUW)ScJ  
* @since 2006-2-2 y}H*p  
* @version 1.0 Y+Q,4s  
*/ ~,3v<A[5Vi  
public class MergeSort implements SortUtil.Sort{ a#~Z5>{  
zMHf?HQ-Z  
/* (non-Javadoc) <aQ; "O~   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Dk. 9&9mz  
*/ lpX p )r+  
public void sort(int[] data) { ct|'I]nB.h  
int[] temp=new int[data.length]; n!E H>'T  
mergeSort(data,temp,0,data.length-1); 3:CQMZ|;@  
} f T+n-B  
Wy0a2Ve  
private void mergeSort(int[] data,int[] temp,int l,int r){ 1V?Sj  
int mid=(l+r)/2; 6DiA2'{f  
if(l==r) return ; Vzv.e6_  
mergeSort(data,temp,l,mid); f%"_U'  
mergeSort(data,temp,mid+1,r); O7#}8-@}<u  
for(int i=l;i<=r;i++){ bQnwi?2  
temp=data; th>yi)m  
} {D_4~heF  
int i1=l; * y"GgI  
int i2=mid+1; Ar{=gENn  
for(int cur=l;cur<=r;cur++){ 1rzq$,O  
if(i1==mid+1) K]=>F  
data[cur]=temp[i2++]; h0EGhJs  
else if(i2>r) `peJ s~V  
data[cur]=temp[i1++]; IUBps0.T\  
else if(temp[i1] data[cur]=temp[i1++]; wx?{|  
else   } k%\  
data[cur]=temp[i2++]; ~IN$hKg^  
} B}xo|:f!zj  
} {Z{NH:^  
qh'f,#dI}  
} H ]N/Y{  
rF j)5~  
改进后的归并排序: '<E8< bi  
Xrzh*sp  
package org.rut.util.algorithm.support; Wx\"wlJ7.3  
x /Ky: Ky  
import org.rut.util.algorithm.SortUtil; G cLp"  
NByN}e  
/** 9j>sRE1  
* @author treeroot )9W# 5V$  
* @since 2006-2-2 ~uD;_Y=u)r  
* @version 1.0 Q; /!oA_  
*/ V{^fH6;[  
public class ImprovedMergeSort implements SortUtil.Sort { !NY^(^   
5Vm}<8{  
private static final int THRESHOLD = 10; QCY{D@7T  
!A<XqzV]  
/* NS/L! "g  
* (non-Javadoc) nO7o7bc  
* (P!reYyM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y&I|m  
*/ #$z-]i  
public void sort(int[] data) { n|`):sP  
int[] temp=new int[data.length]; %'~<:>:"E  
mergeSort(data,temp,0,data.length-1); &CP@] pi9L  
} .g`*cDW^=  
8`*9jr  
private void mergeSort(int[] data, int[] temp, int l, int r) { %D6Wlf+^n  
int i, j, k; ~q%9zO'  
int mid = (l + r) / 2; #RIfR7`T  
if (l == r) <{).x 6  
return; s&_O2(l  
if ((mid - l) >= THRESHOLD) 7JwWM2N?V  
mergeSort(data, temp, l, mid); c(=O`%B{  
else >wm$,%zk  
insertSort(data, l, mid - l + 1); u~T$F/]k>  
if ((r - mid) > THRESHOLD) H;!hp0y  
mergeSort(data, temp, mid + 1, r); u2\qg;dP  
else Fea\ eB  
insertSort(data, mid + 1, r - mid); Jn[ K0GV  
$5AtI$TV_!  
for (i = l; i <= mid; i++) { ifCGNvDR  
temp = data; _"Ke=v_5  
} XI(@O)  
for (j = 1; j <= r - mid; j++) { h sw My  
temp[r - j + 1] = data[j + mid]; Tb6x@MorP  
} "._WdY[  
int a = temp[l]; +Y^F>/4=Y  
int b = temp[r]; ^znv[  
for (i = l, j = r, k = l; k <= r; k++) { [(UqPd$  
if (a < b) { k{w^MOHNg  
data[k] = temp[i++]; )Is*- W  
a = temp; |g^W @.P  
} else { s!!t  
data[k] = temp[j--]; 9i[2z:4HJ  
b = temp[j];  /lok3J:  
} Gqc6).tn  
} ;p"XCLHl  
} 9i)mv/i  
<ORz`^27o  
/** =F-^RnO%\  
* @param data Ln%_8yth  
* @param l 10a*7 L  
* @param i F"P:9`/  
*/ c,%>7U(w_  
private void insertSort(int[] data, int start, int len) { qtwmTT)  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); "J:NW_U  
} )H, <i{80c  
}  M!DoR6  
} nhhJUN?8  
} s;f u  
>-+X;0&  
堆排序: s1apHwJ -  
;-Dd\\)p  
package org.rut.util.algorithm.support; S^n4aBm\+  
}4MG114j  
import org.rut.util.algorithm.SortUtil; sU!q~`; J  
I}A#*iD  
/** C:EoUu  
* @author treeroot ?qW|k6{O  
* @since 2006-2-2 hs uJ;4}$q  
* @version 1.0 GV[BpH  
*/ 8~+Msn:  
public class HeapSort implements SortUtil.Sort{ XdVC>6  
M_)T=s *  
/* (non-Javadoc) vt=S0X^$yc  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e|9Bzli{  
*/ DNO%J^  
public void sort(int[] data) { ebVfny$D  
MaxHeap h=new MaxHeap(); mW9b~G3k  
h.init(data); 6)j4 TH  
for(int i=0;i h.remove(); raZRa*C;  
System.arraycopy(h.queue,1,data,0,data.length); yiA\$mtO  
} Di=6.gm[<  
O]!DNN  
private static class MaxHeap{ DcDGrRuh  
Gukq}ZQd  
void init(int[] data){ %LW~oI.  
this.queue=new int[data.length+1]; ? D'-{/<4  
for(int i=0;i queue[++size]=data; V-u\TiL  
fixUp(size); t\0JNi$2  
} m_f^#:  
} &!MKqJ@t  
;<rJ,X#  
private int size=0; ]`m5!V_Y  
h*%1Jkxu  
private int[] queue; k_`S[  
50`r}s}  
public int get() { cIkLdh   
return queue[1]; \bE~iz3b9  
} svgi!=  
qeGOSGc_  
public void remove() { ~epkRO="  
SortUtil.swap(queue,1,size--); gI{F"7fa=  
fixDown(1); C`K/ai{4  
} QKQy)g  
file://fixdown akwVU\RP  
private void fixDown(int k) { ArM e[t0$  
int j; GMI >$$<  
while ((j = k << 1) <= size) { a$A S?`L  
if (j < size %26amp;%26amp; queue[j] j++; $6Psq=|  
if (queue[k]>queue[j]) file://不用交换 i:To8kdO  
break; `Y9@?s Q  
SortUtil.swap(queue,j,k); D=]P9XDvb.  
k = j; |.yRo_  
} 2US8<sq+  
} K~G^jAk+  
private void fixUp(int k) { 0\A[a4crj  
while (k > 1) { s5@^g8(+C  
int j = k >> 1; W;W\L? r  
if (queue[j]>queue[k]) !;oBvE7Kh  
break; \t3i9#Q  
SortUtil.swap(queue,j,k); GM~jR-FZ  
k = j; ::w%rv  
} kY&j~R[C  
} !).d c.P  
5j %jhby?  
} E2cmT$6  
I.x>mN -0  
} %/p5C  
K;O\Pd  
SortUtil: ps [rYy  
@m4d4K@  
package org.rut.util.algorithm; nMqU6X>P!  
NU"X*g-x^  
import org.rut.util.algorithm.support.BubbleSort; Zs)9O Ju  
import org.rut.util.algorithm.support.HeapSort; +q!6zGs.  
import org.rut.util.algorithm.support.ImprovedMergeSort; *2Kte'+q  
import org.rut.util.algorithm.support.ImprovedQuickSort; oizoKwp%  
import org.rut.util.algorithm.support.InsertSort; Dc5XU3Eu`  
import org.rut.util.algorithm.support.MergeSort; ,0O!w>u_]J  
import org.rut.util.algorithm.support.QuickSort; 6iOAYA=  
import org.rut.util.algorithm.support.SelectionSort; n&lLC&dL  
import org.rut.util.algorithm.support.ShellSort; -g9f3Be  
i[swOY z]X  
/** S]+}Zyg  
* @author treeroot M_DkjuR  
* @since 2006-2-2 54-x 14")  
* @version 1.0 [a2/`ywdV  
*/ ?g2K&  
public class SortUtil { +=v|kd  
public final static int INSERT = 1; A2 r RYzN;  
public final static int BUBBLE = 2; B _ >|Mo/  
public final static int SELECTION = 3; l!2.)F`x  
public final static int SHELL = 4; TDFv\y}yc  
public final static int QUICK = 5; y!].l0e2a  
public final static int IMPROVED_QUICK = 6; oz--gA:g  
public final static int MERGE = 7; oUH\SW8?  
public final static int IMPROVED_MERGE = 8; 6$Y1[  
public final static int HEAP = 9; 9dAsXEWh  
mj pH)6aD0  
public static void sort(int[] data) { #v1 4"sZ}  
sort(data, IMPROVED_QUICK); ,wjL3c  
} W\/0&H\i  
private static String[] name={ .x&>H  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" X9>ujgK  
}; Fc Cxr@  
1RLSeT  
private static Sort[] impl=new Sort[]{ 1JY4E2Q  
new InsertSort(), @%K 8 oYK  
new BubbleSort(), m`|+_{4[n  
new SelectionSort(), j56Y,Tm  
new ShellSort(), Wl{Vz  
new QuickSort(), uPpP")  
new ImprovedQuickSort(), 6+>rf{5P7  
new MergeSort(), ;Ti?(n#M>  
new ImprovedMergeSort(), `|4{|X*U.  
new HeapSort() 6FfDif  
}; q~Ud>{  
.%o:kq@B  
public static String toString(int algorithm){ NGxuwHIQ8  
return name[algorithm-1]; 8LOzL,Ah  
} 94+#6jd e  
??4QDa-  
public static void sort(int[] data, int algorithm) { 5M3QRJ!  
impl[algorithm-1].sort(data); 3N-(`[m{E  
} 6 J#C  
yq2Bz7P  
public static interface Sort { Nt)9- \T  
public void sort(int[] data); D6D*RTi4  
} 9Rpj&0Is  
m@~HHwj  
public static void swap(int[] data, int i, int j) { /*[a>B4-q  
int temp = data; V6c?aZ,O  
data = data[j]; #RcmO **  
data[j] = temp; z&eJ?wb  
} jU=)4nx  
} drH!?0Dpg  
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