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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。 Hu$]V*rAG  
插入排序: }8E//$J  
?}*A/-Hx0U  
package org.rut.util.algorithm.support; 'T54k  
Y21,!$4gb  
import org.rut.util.algorithm.SortUtil; sY?pp '}a  
/** owA3>E5t&  
* @author treeroot ZoJ:4uo N`  
* @since 2006-2-2 cnAwoTt4  
* @version 1.0 'U<-w$!f+^  
*/ {;4AdZk  
public class InsertSort implements SortUtil.Sort{ &&e{9{R  
EK:!.Fl  
/* (non-Javadoc) 9wLV\>i  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J~z;sTR  
*/ 7)zn[4v7qt  
public void sort(int[] data) { 7+aTrE{  
int temp; "rz|sbj  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); n8"S;:Zm  
} Ba/Z<1)  
} H27J kZ&  
} J-lQPMI,  
ARYqX\-e  
} 5q[0;`J  
q_Td!?2?  
冒泡排序: 6T 2jVNg  
Fy-+? ~  
package org.rut.util.algorithm.support; 6,'v /A-  
ehO@3%z30c  
import org.rut.util.algorithm.SortUtil; [0 7N<<  
xw-x<7  
/** z^ +CD-  
* @author treeroot j3QpY9A  
* @since 2006-2-2 /#J)EH4p  
* @version 1.0 |RQ19m@  
*/ h'wOslyFa  
public class BubbleSort implements SortUtil.Sort{ YIA}F1:  
}S6Sz&)  
/* (non-Javadoc) 2Mx9Kd'a r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z(AI]wk3<  
*/ 11}fPWK  
public void sort(int[] data) { 70! &  
int temp; Oqzz9+  
for(int i=0;i for(int j=data.length-1;j>i;j--){ v#0R   
if(data[j] SortUtil.swap(data,j,j-1); q#B^yk|Y  
} GW$ (E*4q  
} v%3mhk#  
} HxJKS*H;  
} qPdNI1 |  
d,au&WZ;_  
} c_xtwdkL9  
$NP5Z0v7  
选择排序:  D/hQ{T  
0N.tPF}  
package org.rut.util.algorithm.support; Xr~6_N{J  
ug!DL=ZW  
import org.rut.util.algorithm.SortUtil; JsOPI ]  
}x4,a6^  
/** ,J?Hdy:R  
* @author treeroot o[*</A }  
* @since 2006-2-2 MGIpo[  
* @version 1.0 TEOV>Tt  
*/ ~*D)L'`2M  
public class SelectionSort implements SortUtil.Sort { W#|]m=2W  
?}sh@;]*h  
/* yG58?5\9  
* (non-Javadoc) l|-1H76  
* ?}%Gr,tj2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) th8f  
*/ P%>? O :a  
public void sort(int[] data) { Y4`MgP8t  
int temp; NLM ]KT  
for (int i = 0; i < data.length; i++) { ~*-ar6  
int lowIndex = i; _)Uw-vhQiT  
for (int j = data.length - 1; j > i; j--) { 'X{cDdS^  
if (data[j] < data[lowIndex]) { L'4ob4r{L  
lowIndex = j; F.?`<7  
} qWe1`.o  
} CtVY;eG  
SortUtil.swap(data,i,lowIndex); o9M[Zr1@k  
} ''!pvxA  
} *!UY;InanX  
5=Mm=HyI2  
} WMBntB   
<Fb3\T L  
Shell排序: hNUAwTH6  
^[XxE Lx  
package org.rut.util.algorithm.support; 5gW`;Cdbyc  
HTI1eLZ2  
import org.rut.util.algorithm.SortUtil; c+AZ(6O ?\  
1&c>v3 $2  
/** 8Q^yh6z  
* @author treeroot %JDG aG'  
* @since 2006-2-2 CFqoD l  
* @version 1.0 =nOV!!  
*/ :7p0JGd  
public class ShellSort implements SortUtil.Sort{ eA&hiAP/  
a&)0_i:r  
/* (non-Javadoc) tA$,4B?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I.tJ4  
*/ "|`8mNC  
public void sort(int[] data) { K|];fd U  
for(int i=data.length/2;i>2;i/=2){ +Tc4+q!  
for(int j=0;j insertSort(data,j,i); "5e~19  
} Z$0r+phQk=  
} ?*E Y~'I  
insertSort(data,0,1); 8):I< }s#  
} vJ>A >R CB  
1Nw&Z0MI  
/** ?UQVmE&  
* @param data y|q4d(P.  
* @param j -h*Yd)  
* @param i r9@O`i  
*/ dN;kYWRK  
private void insertSort(int[] data, int start, int inc) { NUb^!E"  
int temp; }uWJ  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); wNDLN`,^H  
} g^8dDY[%  
} ]4\^>  
} OYC4iI  
JU:!lyd  
} pOD|  
nWN~G  
快速排序: Y32F { z  
]>/YU*\  
package org.rut.util.algorithm.support; :ORCsl6-  
sF]v$ kq  
import org.rut.util.algorithm.SortUtil; i9k7rEW^  
VgZ<T,SuW  
/** Gk,{{:M:5  
* @author treeroot MLY19;e  
* @since 2006-2-2 M$-4.+G  
* @version 1.0 hxx,E>k  
*/ ADA%$NhJ!  
public class QuickSort implements SortUtil.Sort{ O+`^]D7  
m{!BSl  
/* (non-Javadoc) )V JAs|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;|w &n  
*/ z=!$3E ecr  
public void sort(int[] data) { [6 wI22  
quickSort(data,0,data.length-1); [V{JuG;s  
} x +|Fw d  
private void quickSort(int[] data,int i,int j){ PqPLy  
int pivotIndex=(i+j)/2; Ql%7wrK  
file://swap F^_d8=67h  
SortUtil.swap(data,pivotIndex,j); n<8$_?-  
mLk@&WxG  
int k=partition(data,i-1,j,data[j]); (y^oGY;  
SortUtil.swap(data,k,j); Ol9U^  
if((k-i)>1) quickSort(data,i,k-1); 2iI"|k9M  
if((j-k)>1) quickSort(data,k+1,j); cGkl=-oQ'  
R%aH{UhE`  
} b@^M|h.Va  
/** Q'JEDH\  
* @param data Q6,rY(b6  
* @param i ]?-56c,  
* @param j )]J I Q"rR  
* @return 5h1!E  
*/ C-qsyJgZy  
private int partition(int[] data, int l, int r,int pivot) { !W^2?pqN  
do{ _4o2AS:j  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 2F!K }aw  
SortUtil.swap(data,l,r); Y@KZ:0<  
} nX5*pTfjL3  
while(l SortUtil.swap(data,l,r); &Xe r#6~  
return l; jCW>=1:JGY  
} (&PamsV*8  
10}oaL S  
} PZNo.0M70  
=/6.4;8  
改进后的快速排序: |{PQ0DS  
k}ps-w6:  
package org.rut.util.algorithm.support; }yx{13:[  
z:u`W#Rf  
import org.rut.util.algorithm.SortUtil; B_hob  
MGc=TQ.  
/** BGOI$,  
* @author treeroot Rt7}e09HV  
* @since 2006-2-2 X]cB `?vR  
* @version 1.0 }Bc'(2A;,  
*/ ol!o8M%Q  
public class ImprovedQuickSort implements SortUtil.Sort { KblOP{I  
kjaz{&P  
private static int MAX_STACK_SIZE=4096; J}jK_  
private static int THRESHOLD=10; Vnh +2XiK  
/* (non-Javadoc) "1%<IqpU+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "x\3`Qk  
*/ _QvyFKAM  
public void sort(int[] data) { t8i"f L  
int[] stack=new int[MAX_STACK_SIZE]; g ywI@QD%#  
0#K@^a  
int top=-1; r{\cm Ds  
int pivot; {Hp?rY@  
int pivotIndex,l,r; kjNA~{  
OOl{  
stack[++top]=0; Z;%  
stack[++top]=data.length-1; IL.Jx:(0  
Redp'rXT<h  
while(top>0){ a:zx&DwM  
int j=stack[top--]; (ZShhy8g  
int i=stack[top--]; pal))e! B  
4Xz6JJ1U[H  
pivotIndex=(i+j)/2; ~lDLdUs  
pivot=data[pivotIndex]; + A0@# :B  
KG>.7xVWV7  
SortUtil.swap(data,pivotIndex,j); !Q.c8GRUQ  
V.y+u7<3}  
file://partition ^{6Y7T]  
l=i-1; FT|*~_@  
r=j; %M}zi'qQ?  
do{ rFx2 S  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); dZ%b|CUb  
SortUtil.swap(data,l,r); q{U -kuui  
} Maa5a  
while(l SortUtil.swap(data,l,r); ~;+i[Z&e  
SortUtil.swap(data,l,j); *}/xy SH3  
&51/Pm2O  
if((l-i)>THRESHOLD){ I,YGm  
stack[++top]=i; "b1_vA]03  
stack[++top]=l-1; IE_@:]K}Ja  
} v/m`rc]e  
if((j-l)>THRESHOLD){ jQb=N%5s  
stack[++top]=l+1; IC}zgvcW  
stack[++top]=j; So`xd *C!  
} @b>]q$)(}  
I]k'0LG*^  
} {_q2kk  
file://new InsertSort().sort(data); Phb<##OB  
insertSort(data); T&R`s+7  
} n|,Es!8:o  
/** 2~ 'Q#(  
* @param data <U~P-c tN  
*/ Q@$1!9m  
private void insertSort(int[] data) { $hKgTf?  
int temp; \&TTe8  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Lvp/} /H/  
} ise@,[!  
} PU'v o4  
} OW-+23)sj  
Gi<f/xQk>  
} vi5~Rd`  
5Q%#Z L/'  
归并排序: BbU&e z8P  
Rp@u.C <  
package org.rut.util.algorithm.support; htF&VeIte  
(vI7qD_  
import org.rut.util.algorithm.SortUtil; Ce0I8B2y  
I* bjE '  
/** wR;l"*j  
* @author treeroot N$y4>g  
* @since 2006-2-2  >#q|Pjv]  
* @version 1.0 ~(Tz <  
*/ S;t~"87v*  
public class MergeSort implements SortUtil.Sort{ +?.,pqn<=  
F;b|A`M  
/* (non-Javadoc) Fj]S8wI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 78.sf{I  
*/ <=zGaU,  
public void sort(int[] data) { #zy%B  
int[] temp=new int[data.length]; 0)P18n"$  
mergeSort(data,temp,0,data.length-1); C$tSsw?A  
} :EO}uP2  
r! M2H {  
private void mergeSort(int[] data,int[] temp,int l,int r){ TgUQD(d^  
int mid=(l+r)/2; FdSaOod8  
if(l==r) return ; w(G(Q>GI  
mergeSort(data,temp,l,mid); ALw uw^+  
mergeSort(data,temp,mid+1,r); 9 V"j=1B}  
for(int i=l;i<=r;i++){ w+MdQ@'5  
temp=data; }`MO}Pz  
} o?b%L  
int i1=l; ;T_9;RU<'b  
int i2=mid+1; AH7k|6ku<*  
for(int cur=l;cur<=r;cur++){ h)<R#xw  
if(i1==mid+1) )ld7^G  
data[cur]=temp[i2++]; %/^d]#  
else if(i2>r) 3jI.!xD`  
data[cur]=temp[i1++]; iM9563v  
else if(temp[i1] data[cur]=temp[i1++]; V\G>e{  
else A]J^{h0 k  
data[cur]=temp[i2++]; =CVw0'yZ  
} ko:I.6-K  
} uVk8KMYU  
\ bhok   
} Q0--.Q=:Y  
~FsUK;?  
改进后的归并排序: ew"Fr1UGYZ  
7&QVw(:)M  
package org.rut.util.algorithm.support; oby*.61?5l  
;?[~]"  
import org.rut.util.algorithm.SortUtil; n (|>7  
5{5ABV  
/** x'KsQlI/  
* @author treeroot M ?3N  
* @since 2006-2-2 kzmt'/L8  
* @version 1.0 6,7omYof  
*/ U=t'>;(g  
public class ImprovedMergeSort implements SortUtil.Sort { VsmL#@E  
.( J /*H  
private static final int THRESHOLD = 10; 3K{8sFDO  
g}D$`Nx:  
/* K@i*Nl  
* (non-Javadoc) BmM,vllO  
* 7^iAc6QSy3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xL BG}C  
*/ |")x1' M  
public void sort(int[] data) { `u}x:f !  
int[] temp=new int[data.length]; \1Bgs^  
mergeSort(data,temp,0,data.length-1); $W?XxgkB?  
} Y/^<t'o&  
w* I+~o-  
private void mergeSort(int[] data, int[] temp, int l, int r) { c]]F`B  
int i, j, k; ZX0c_Mk=  
int mid = (l + r) / 2; j{^(TE  
if (l == r) 3dbf!   
return; VZ,T`8"  
if ((mid - l) >= THRESHOLD) gfYB|VyWo  
mergeSort(data, temp, l, mid); 3/AUV%+  
else . $k"+E  
insertSort(data, l, mid - l + 1); v<SEGv-  
if ((r - mid) > THRESHOLD) IBqY$K+l  
mergeSort(data, temp, mid + 1, r); :qbG%_PJ  
else 'l:2R,cP  
insertSort(data, mid + 1, r - mid); J4vKfxEg  
!BX62j\?  
for (i = l; i <= mid; i++) { f+920/>!Z  
temp = data; R\}YD*  
} M BT-L  
for (j = 1; j <= r - mid; j++) { ^55?VQB  
temp[r - j + 1] = data[j + mid]; |FFC8R%@]u  
} 6ZR0_v;TD  
int a = temp[l]; Wy4^mOv  
int b = temp[r]; >S!DIL  
for (i = l, j = r, k = l; k <= r; k++) { k~R[5W|'  
if (a < b) { =F&RQ}$   
data[k] = temp[i++]; /RM-+D:Y  
a = temp; 78)^vvn5~  
} else { k~#|8eLv  
data[k] = temp[j--]; Q8x{V_Pot  
b = temp[j]; K5>:Wi Y  
} @QG1\W'  
} `k&K"jA7$  
} l:eNu}{&  
KV_Ga8hs  
/** @"8QG^q8de  
* @param data DKl7|zG4  
* @param l }/spo3,6  
* @param i J7GsNFL  
*/ fYy.>m+P1  
private void insertSort(int[] data, int start, int len) { ^0Q*o1W  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); yxN!*~BvL  
} \zU5G#LQ  
} ?U08A{ c  
} 1VFqT'  
} .@Uz/j?>  
[MS.5+1Y  
堆排序: !j9i=YDb  
.Qt3!ek  
package org.rut.util.algorithm.support; gN(hv.nQ  
<gLtX[v!CL  
import org.rut.util.algorithm.SortUtil; 05B+WJ1  
m;f?}z_\$  
/** ts<dUO  
* @author treeroot "6yiQ\`J  
* @since 2006-2-2 Td*Oljj._U  
* @version 1.0 bFezTl{M  
*/ 5V~p@vCx  
public class HeapSort implements SortUtil.Sort{ 6# ";W2  
h&bV!M  
/* (non-Javadoc) ]Rh( =bg  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9M]"%E!s  
*/ W_\L_)^X  
public void sort(int[] data) { ~C'nBV  
MaxHeap h=new MaxHeap(); FH8mK)  
h.init(data); k{jw%a<Sc  
for(int i=0;i h.remove(); cl{W]4*$  
System.arraycopy(h.queue,1,data,0,data.length); k_<{j0z.  
} X3{1DY3@u  
~[TKVjyO  
private static class MaxHeap{ *"FLkC4  
2?iOB6  
void init(int[] data){ _M[[vXH  
this.queue=new int[data.length+1]; z L'IN)7MU  
for(int i=0;i queue[++size]=data; %D(prA_w  
fixUp(size); ;&6PL]/d  
} ;-pvc<_c<  
} wp.e3l  
qYZ7Zt;  
private int size=0; Q5nyD/k4c  
3D{4vMm X  
private int[] queue; ^:DhHqvK  
Pmlgh&Z  
public int get() { gvqd 1?0w  
return queue[1]; v\(m"|4(i  
} C'/M/|=Q#  
_SC  
public void remove() { ?vn 0%e868  
SortUtil.swap(queue,1,size--); 1{x~iZa  
fixDown(1); ZT"|o\G^Q  
} 7. 9s.*  
file://fixdown ynZ[c8.  
private void fixDown(int k) { b+].Uc  
int j; eH%L?"J~:  
while ((j = k << 1) <= size) { ?lDcaI>+n  
if (j < size %26amp;%26amp; queue[j] j++; S~Iw?SK3  
if (queue[k]>queue[j]) file://不用交换 ^[}0&_L w  
break; w2N3+Tkg  
SortUtil.swap(queue,j,k); >xV<nLf/  
k = j; &rztC]jF  
} iW1ih Q X  
} 8;g.3Qv  
private void fixUp(int k) { e=o{Zo?H=  
while (k > 1) { mERrcYY{  
int j = k >> 1; x56 F  
if (queue[j]>queue[k]) e9@fQ  
break; j%Z{.>mJ  
SortUtil.swap(queue,j,k); !N8)C@=  
k = j; #VdI{IbW  
} M=[q+A  
} s i "`  
]Uu(OI<)  
} fE%[j?[  
w$lfR ,  
} s>@#9psm  
2Cd --W+=  
SortUtil: LlA`QLe  
rw8J:?0x  
package org.rut.util.algorithm; nN=:#4 >Y  
mE^tzyh  
import org.rut.util.algorithm.support.BubbleSort; >!Ap/{2  
import org.rut.util.algorithm.support.HeapSort; nKjeH@&#  
import org.rut.util.algorithm.support.ImprovedMergeSort; \gp,Txueb  
import org.rut.util.algorithm.support.ImprovedQuickSort; AO}i@YJth  
import org.rut.util.algorithm.support.InsertSort; _Hd1sx  
import org.rut.util.algorithm.support.MergeSort; A_jB|<bjTP  
import org.rut.util.algorithm.support.QuickSort; sO6gIPU^  
import org.rut.util.algorithm.support.SelectionSort; -[=AlqL  
import org.rut.util.algorithm.support.ShellSort; AZy~Q9Kc  
&AQ;ze  
/** 9IvcKzS2  
* @author treeroot RZd4(7H=q  
* @since 2006-2-2 7"n1it[RJ8  
* @version 1.0 Lk`k>Nn)  
*/ W?^8/1U  
public class SortUtil { qXB03}] G  
public final static int INSERT = 1; ? gA=39[j  
public final static int BUBBLE = 2; *]m kyAhi  
public final static int SELECTION = 3; uZ/7t(fy  
public final static int SHELL = 4; (Gi+7GMV'  
public final static int QUICK = 5; g\qL}:  
public final static int IMPROVED_QUICK = 6; n=G>y7b  
public final static int MERGE = 7; BK(pJNBh  
public final static int IMPROVED_MERGE = 8; c3zT(FgO>N  
public final static int HEAP = 9; xS~yH[k  
mI7rx`4H  
public static void sort(int[] data) { =nvAOvP{?  
sort(data, IMPROVED_QUICK); * >GIk`!wM  
} S:p.W=TAB  
private static String[] name={ q: Bt]2x  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" //X e*0  
}; E+m]aYu"  
9B+ zJ Vte  
private static Sort[] impl=new Sort[]{ V#zhG AMy.  
new InsertSort(), kJurUDo  
new BubbleSort(), { OxAY_  
new SelectionSort(), jMf 7J  
new ShellSort(), a(}VA|l  
new QuickSort(), +q #Xy0u  
new ImprovedQuickSort(), GP{$v:RG  
new MergeSort(), "rjv5*z^&  
new ImprovedMergeSort(), Et}C`vZ+Ve  
new HeapSort() ,5eH2W  
}; (:.Q\!aZ1  
23}BW_m  
public static String toString(int algorithm){ }\`(m\2xo  
return name[algorithm-1]; POqRHuFq  
} u=@h`5-fp  
~T>jBYI0  
public static void sort(int[] data, int algorithm) { z*M}=`M$  
impl[algorithm-1].sort(data); :]B% >*;}  
} P"R97#C  
_.d}lK3$2  
public static interface Sort { \3H<z@;  
public void sort(int[] data); NJ|NJ p&0  
} H _Zo@y~J  
'a;ini  
public static void swap(int[] data, int i, int j) { di3 B=A>3  
int temp = data; ;[TljcbS  
data = data[j]; 943I:, B  
data[j] = temp; L4YVH2`0)  
} ="3a%\  
} (orrX Ez  
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