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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。 !OcENV  
插入排序: IeF keE  
% *z-PT22  
package org.rut.util.algorithm.support; mzD^ Y<LTd  
zz_[S{v!#  
import org.rut.util.algorithm.SortUtil; ?4z8)E9Ju  
/** %G?K@5?j?  
* @author treeroot kII7z;<^`  
* @since 2006-2-2 h4fLl3%H  
* @version 1.0 \k.vN@K#  
*/ ~ eN8|SR  
public class InsertSort implements SortUtil.Sort{ C:\(~D *GS  
$v} <'  
/* (non-Javadoc) Ulqh@CE)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $_j1kx$  
*/ ujgLJ77  
public void sort(int[] data) { qJ8-9^E,L  
int temp; oP,9#FC|(  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); t7F.[uWD  
} !0 Q8iW:  
} xi'<y  
} 8NimZ(  
Mth6-^g5  
} 7w58L:)B.  
TYjA:d9YH  
冒泡排序: 2H[)1|]l  
SFjU0*B$  
package org.rut.util.algorithm.support; Ie'P#e'  
*j*Du+  
import org.rut.util.algorithm.SortUtil; 45}v^|Je\  
 s&*yk p  
/** BIWD/ |LQ  
* @author treeroot &1)xoZ'\  
* @since 2006-2-2 #iis/6"  
* @version 1.0 m/USC'U%  
*/ tLX,+P2|  
public class BubbleSort implements SortUtil.Sort{ VRS 2cc  
's@MQ! *  
/* (non-Javadoc) 9 Aivf+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "dN < i  
*/ !Qu PG/=X  
public void sort(int[] data) { `?o=*OS7Y  
int temp; H`<?<ak6'M  
for(int i=0;i for(int j=data.length-1;j>i;j--){ sms1%%~  
if(data[j] SortUtil.swap(data,j,j-1); 8?jxDW a  
} bY#;E;'7  
} _|n=cC4Qu  
} U6WG?$x  
} rS~qi}4X  
VEh]p5D  
} PHR#>ZD  
+cfziQ$'  
选择排序: ++92:decM  
Uh6mGL z*&  
package org.rut.util.algorithm.support; {y);vHf$  
rveVCTbC  
import org.rut.util.algorithm.SortUtil; zS% m_,t  
Fu0.~w  
/** b%0BkS*  
* @author treeroot ^!>.97*   
* @since 2006-2-2 I}:L]H{E  
* @version 1.0 %{ ~>n"  
*/ INLf#  N  
public class SelectionSort implements SortUtil.Sort { \ sf!  
e`DsP8-&v  
/* ^!@*P,'I  
* (non-Javadoc) ]Ti$ztJ  
* cS~!8`Fwy  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _Y YP4lEL  
*/ mrnxI#6  
public void sort(int[] data) { Pc4R!Tc  
int temp; /"0as_L<  
for (int i = 0; i < data.length; i++) { 2oNV=b[  
int lowIndex = i; b:x7)$(  
for (int j = data.length - 1; j > i; j--) { }|He?[TR  
if (data[j] < data[lowIndex]) { ib50LCm  
lowIndex = j; 3}M \c)  
} 5!:._TcO  
} u&3EPu  
SortUtil.swap(data,i,lowIndex); @f=RL)$|  
} vb}/@F,Q5  
} Qg>L,ZO  
cHn;}l!I  
} _[$# b]V  
'oi2Seq  
Shell排序: M'|)dM|  
5`UJouHi  
package org.rut.util.algorithm.support; ;qVG \wQq  
T5{T[YdX<  
import org.rut.util.algorithm.SortUtil; >40 GP#Vz  
Gmgeve  
/** a#R %8)  
* @author treeroot )_pt*xo  
* @since 2006-2-2 x(yX0 ,P/7  
* @version 1.0 B? TpBd  
*/ G"fdu(.@  
public class ShellSort implements SortUtil.Sort{ W%zmD Hk~  
qj;l,Kua  
/* (non-Javadoc) {3 SdX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {fElto   
*/ )v-Cj_W5]"  
public void sort(int[] data) { Uf[T_  
for(int i=data.length/2;i>2;i/=2){ US]"4=Zm  
for(int j=0;j insertSort(data,j,i); 49y *xMn  
} 7BrV<)ih{*  
} 5\+EHW!o  
insertSort(data,0,1); 45r|1<Ro  
} 8v$ g  
X o_] v  
/** =u[rOU{X"W  
* @param data |<QI%Y$dr  
* @param j wV %8v\  
* @param i V4oak!}?  
*/ d.b?! kn  
private void insertSort(int[] data, int start, int inc) { 6o9sR)c ?  
int temp; XL?A w  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); oEPNN'~3  
} G/%Ubi6%  
} B^Bbso'{1  
} I-,Xwj-  
?V6 %>RU  
} [M<{P5q  
(-#rFO5~l  
快速排序: dd19z%  
Cl-S=q@>V  
package org.rut.util.algorithm.support; tbRE/L<  
SDJ;*s-  
import org.rut.util.algorithm.SortUtil; eTT^KqE>&  
+Gp!cGaAm  
/** XzN-slu!  
* @author treeroot xf[z EEt  
* @since 2006-2-2 6HB]T)n  
* @version 1.0 A@\qoS[  
*/ Bd.Z+#%l"  
public class QuickSort implements SortUtil.Sort{ Yo@m50s$  
]zy~@,\  
/* (non-Javadoc) U"/yB8!W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,?t}NZY&  
*/ 1riBvBT  
public void sort(int[] data) { D@}St:m}  
quickSort(data,0,data.length-1); PGMv(}%;  
} % Mw'e/?  
private void quickSort(int[] data,int i,int j){ T&mbXMN  
int pivotIndex=(i+j)/2; e%'z=%(  
file://swap vx PDC~3;  
SortUtil.swap(data,pivotIndex,j); #?A]v>I;C  
CF,8f$:2  
int k=partition(data,i-1,j,data[j]); /bu'6/!`  
SortUtil.swap(data,k,j); KuU3DTS85Z  
if((k-i)>1) quickSort(data,i,k-1); .wM:YX'[G  
if((j-k)>1) quickSort(data,k+1,j); !k%l+I3J[  
Gmqs`{tc  
} kf}F}Ad:%  
/** A> J1B(up  
* @param data Ny]'RS-  
* @param i .Kg|f~InO  
* @param j !~ BZHi6\  
* @return 2Ti" s-  
*/ 3"f)*w7d  
private int partition(int[] data, int l, int r,int pivot) { V^9$t/c &  
do{ p6B .s_G4  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); RCoeJ|  
SortUtil.swap(data,l,r); d.L OyO  
} Dl>*L  
while(l SortUtil.swap(data,l,r); :h^O{"au^  
return l; [vZfH!vLP  
} 0~(\lkh*!9  
&NlS  =  
} %H 8A=  
|E"Xavi>  
改进后的快速排序: }g%KvYB_  
_ .-o%6  
package org.rut.util.algorithm.support; u-8X$aJ  
"sz.v<F0:s  
import org.rut.util.algorithm.SortUtil; y|FBYcn#F  
v@F|O8t:s  
/** E_ o{c5N  
* @author treeroot <Gbn PG?  
* @since 2006-2-2 W?SP .-I  
* @version 1.0 HVtr,jg  
*/ R-=_z 6<  
public class ImprovedQuickSort implements SortUtil.Sort { E1$Hu{  
 5xG|35Pj  
private static int MAX_STACK_SIZE=4096; \[@Q}k[  
private static int THRESHOLD=10; Y\+(rC27  
/* (non-Javadoc) # q0Ub-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7}2sIf[I  
*/ Dq0-Kf,^  
public void sort(int[] data) { bd@*vu}?}  
int[] stack=new int[MAX_STACK_SIZE]; %s~NQ;Y  
N1D6D$s0  
int top=-1; 8o*\W$K@  
int pivot; 5KL9$J9k  
int pivotIndex,l,r; <^H1)=tlF  
Bf D,z  
stack[++top]=0; \O8Y3|<  
stack[++top]=data.length-1; m1~qaD<DZ$  
fW_}!`:  
while(top>0){ d~togTs1  
int j=stack[top--]; yYxeNE"  
int i=stack[top--]; 5`1(}  
*/0vJz%<.M  
pivotIndex=(i+j)/2; Verbmeg&n  
pivot=data[pivotIndex]; GnSgO-$"  
{ r< (t#  
SortUtil.swap(data,pivotIndex,j); W\ 1bE(AwZ  
o<C]+Nt,@  
file://partition |_hioMVz  
l=i-1;  ~ LJ>WA  
r=j; o(Ua",|  
do{ 2<46jJYL'  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); >!HfH(is\  
SortUtil.swap(data,l,r); 3s+<    
} ~8KF<2c   
while(l SortUtil.swap(data,l,r); i6!T`Kau  
SortUtil.swap(data,l,j); ::3iXk)  
Q:-%3)g<<  
if((l-i)>THRESHOLD){ Dz"u8 f  
stack[++top]=i; ? 6yF{!F*  
stack[++top]=l-1; 0)6i~MglY  
} IGh !d?D  
if((j-l)>THRESHOLD){ d- Z+fz  
stack[++top]=l+1; Rye ~w6  
stack[++top]=j; O<eWq]  
} ~$?y1Yv  
=!pu+&I 9  
} /pAm8vK   
file://new InsertSort().sort(data); J1gEjd   
insertSort(data); %2rHvF=  
} =sUl`L+w,L  
/** /ZIJ<#o[  
* @param data Q`@$j,v  
*/ '%n<MTL  
private void insertSort(int[] data) { w (vE2Y ?  
int temp; ,w9#%=xE  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); O X5Co <u  
} zAkc 67:  
} `wn<3#  
} 0i5T] )r  
6oTbn{=UUq  
} ?d>P+).  
"2#-xOCO  
归并排序: n!l./>N  
\GbHS*\+  
package org.rut.util.algorithm.support; tpNtoqg_$  
&.+n L  
import org.rut.util.algorithm.SortUtil; s{1Deek=  
`PQ?8z|  
/** niBjq#bJi  
* @author treeroot |%2/I>o  
* @since 2006-2-2 EL 8N[]RF  
* @version 1.0 z'\}/k+  
*/ pjKl)q  
public class MergeSort implements SortUtil.Sort{ [6&CloY3  
OUIUgej  
/* (non-Javadoc) m! '1$G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {LB }v;?l  
*/ 9J2q`/6~e  
public void sort(int[] data) { ;mo\ yW1  
int[] temp=new int[data.length]; Wd^F%)(  
mergeSort(data,temp,0,data.length-1); Bah.\ZsYQP  
}  ^ :  
[U3D`V$xD  
private void mergeSort(int[] data,int[] temp,int l,int r){ -hU>1ux&V  
int mid=(l+r)/2; {l*&l2  
if(l==r) return ; ?sjZ13 SUa  
mergeSort(data,temp,l,mid); :cmI"Bo  
mergeSort(data,temp,mid+1,r); aCYm$6LmA  
for(int i=l;i<=r;i++){ w ~L\Ebg  
temp=data; JK:mQ_  
} mNnw G);$  
int i1=l; \AtwO  
int i2=mid+1; Kl46CZs#8  
for(int cur=l;cur<=r;cur++){ HM$`z"p5jg  
if(i1==mid+1) }!Diai*C  
data[cur]=temp[i2++]; N[ Lz 0c?  
else if(i2>r) Y|0-m#1F#  
data[cur]=temp[i1++]; /_VRO9R\V  
else if(temp[i1] data[cur]=temp[i1++]; qm'C^ X?  
else fa+W9  
data[cur]=temp[i2++]; C#**)  
} ;Xd\$)n  
} ^pQo`T6  
k+q6U[ce  
} OnPy8mC  
u7Y'3x,`  
改进后的归并排序: e??{&[  
/|u]Y/ *  
package org.rut.util.algorithm.support; }x#P<d(  
 wc+N  
import org.rut.util.algorithm.SortUtil; rlO%%Qn`  
Dt~}9HrU  
/** QIMv9;  
* @author treeroot +U_-Lq )  
* @since 2006-2-2 \xO2WD  
* @version 1.0 X!+Mgh6  
*/ |B{$URu  
public class ImprovedMergeSort implements SortUtil.Sort { ,5A>:2 zs  
"{ QHWZ  
private static final int THRESHOLD = 10; Nh\8+v*+{  
DKVt8/vq  
/* {DXZ}7w:v  
* (non-Javadoc) yu?s5  
* "<.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5#9Wd9LP  
*/ &zh+:TRm  
public void sort(int[] data) { M9 2~iM  
int[] temp=new int[data.length]; J! 6z  
mergeSort(data,temp,0,data.length-1); |b-Zy~6  
} ad$Qs3)6o  
M%5$-;6~_  
private void mergeSort(int[] data, int[] temp, int l, int r) { g7U:A0Z  
int i, j, k; !NAX6m  
int mid = (l + r) / 2; 7f\^VG  
if (l == r) zloaU  
return; SJ[@fUxO)  
if ((mid - l) >= THRESHOLD) \(>$mtS:  
mergeSort(data, temp, l, mid); Kf?{GNE7  
else F;Xq:e8  
insertSort(data, l, mid - l + 1); 6P*)rye  
if ((r - mid) > THRESHOLD) +|"n4iZ!)  
mergeSort(data, temp, mid + 1, r); DN 8pJa  
else &!YH"{b  
insertSort(data, mid + 1, r - mid); qnfRN'  
?n9$,-^v  
for (i = l; i <= mid; i++) { ma-Y'  
temp = data; pTX'5   
} ZesD(  
for (j = 1; j <= r - mid; j++) { >'|xQjLl  
temp[r - j + 1] = data[j + mid]; RBD7mpd  
} >3 .ep},  
int a = temp[l]; K!: ,l  
int b = temp[r]; z Hs  
for (i = l, j = r, k = l; k <= r; k++) { ][5p.owJse  
if (a < b) { Ah>krE0t  
data[k] = temp[i++]; 4^NHf|UJH  
a = temp; wIR[2&b  
} else { 13&>w{S}  
data[k] = temp[j--]; K<L%@[gi  
b = temp[j]; &?g!}Ky \  
} ] xLb )Z  
} >scS wT  
} ^R'!\m|FR  
'TN{8~Gt*  
/** n#4J]Z@  
* @param data 0l1]QD+Gc5  
* @param l :*Ggz|  
* @param i h7]]F{r5  
*/ x5 ~E'~_  
private void insertSort(int[] data, int start, int len) { vlN. OQ  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); P[P72WR  
} So 6cm|{  
} [;#.DH]  
} t02"v4_i  
} l`%} {3r9  
gcCYXPZp  
堆排序: x[>_I1TJ  
k`~br249  
package org.rut.util.algorithm.support; boOw K?  
g~H? l3v  
import org.rut.util.algorithm.SortUtil; ~m|?! ]n  
0?Wf\7  
/** QRHm |f9_C  
* @author treeroot 8v=47G  
* @since 2006-2-2 IC-xCzR  
* @version 1.0 y{?jr$js<  
*/ FuiW\=^  
public class HeapSort implements SortUtil.Sort{ {uM{5GSL  
;_\  
/* (non-Javadoc) pbvEIa-Y4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5)v^ cR?&  
*/ _]ttKT(  
public void sort(int[] data) { ulSTR f  
MaxHeap h=new MaxHeap(); h%^kA@3F  
h.init(data); Lpbn@y26<  
for(int i=0;i h.remove(); R Mt vEa  
System.arraycopy(h.queue,1,data,0,data.length); kGqf@ I+  
} ,L:)ZZgN  
h_G7T1;L  
private static class MaxHeap{ (dip Ks?K  
,h`D(,?X  
void init(int[] data){ V1>94/waa  
this.queue=new int[data.length+1]; *Z2Q]?:{ i  
for(int i=0;i queue[++size]=data; nkj'AH"2  
fixUp(size); 842+KLS  
} 2b,TkG8K  
} `6sQlCOnF  
%R"/`N9R,  
private int size=0; yaYt/?|  
>`|uc  
private int[] queue; &2]D+aL|h  
>T^v4A  
public int get() { r8?Lr-;  
return queue[1]; : 8<^rP  
} X/7_mU>aKT  
7CMgvH)O  
public void remove() { cH-Zj  
SortUtil.swap(queue,1,size--); n4&j<zAV{  
fixDown(1); ']Xx#U N  
} (g:W|hS  
file://fixdown <\~#\A=;  
private void fixDown(int k) { B@vH1T  
int j; . mrRv8>$  
while ((j = k << 1) <= size) { "wC5hj]  
if (j < size %26amp;%26amp; queue[j] j++; f4I9H0d;!  
if (queue[k]>queue[j]) file://不用交换 HbSx}bM_9  
break; K$5P_~;QL  
SortUtil.swap(queue,j,k); `gs,JJ6N  
k = j; Ru aJ9O  
} ?8}jJw2H  
} SW'KYzn  
private void fixUp(int k) { qm5pEort  
while (k > 1) { j77}{5@p  
int j = k >> 1; ~MQf($]  
if (queue[j]>queue[k]) Q%1;{5   
break; T2;  9  
SortUtil.swap(queue,j,k); q.F1Jj  
k = j; Ol[IC  
} <!(n5y_  
} CHw_?#h  
O~ 0 1)%  
} #p`7gFl  
, tj7'c$0  
} 9d}nyJ  
[te7 uZv-  
SortUtil: 5g2+Ar(  
1H 6Wrik  
package org.rut.util.algorithm; : {Z^ _;Tf  
B :.;:AEbT  
import org.rut.util.algorithm.support.BubbleSort; Ud*[2Oi|R  
import org.rut.util.algorithm.support.HeapSort; <ijmkNVS  
import org.rut.util.algorithm.support.ImprovedMergeSort; Z[bC@y[Wb  
import org.rut.util.algorithm.support.ImprovedQuickSort; :P"Gym  
import org.rut.util.algorithm.support.InsertSort; rO%+)M$A  
import org.rut.util.algorithm.support.MergeSort; G_mu7w  
import org.rut.util.algorithm.support.QuickSort; }PL  
import org.rut.util.algorithm.support.SelectionSort; Tic9r i  
import org.rut.util.algorithm.support.ShellSort; 6&0a?Xu  
B[X6A Qj}d  
/** to=##&ld<  
* @author treeroot i}"JCqo2  
* @since 2006-2-2 D}3fx[  
* @version 1.0  Vp^sER  
*/ H,~In2Z  
public class SortUtil { uhLm yK  
public final static int INSERT = 1; bC-x`a@  
public final static int BUBBLE = 2; 2Hwf:S'  
public final static int SELECTION = 3; a8aqcDs>O  
public final static int SHELL = 4; #8OqX*/  
public final static int QUICK = 5; 4O^1gw  
public final static int IMPROVED_QUICK = 6; e,UgTxZ  
public final static int MERGE = 7; ^D[;JV  
public final static int IMPROVED_MERGE = 8; k>hZ  
public final static int HEAP = 9; k8V0-.UL}  
Wh_c<E}&  
public static void sort(int[] data) { CI'5JOqP  
sort(data, IMPROVED_QUICK);  E/;YhFb[  
} BZshTP[`  
private static String[] name={ 5xUPqW%3  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" y<(.,Nb8  
}; TaT&x_v^~a  
nCB3d[/B  
private static Sort[] impl=new Sort[]{ * ?fBmq[j  
new InsertSort(), 1<|I[EI  
new BubbleSort(), P[i/o#  
new SelectionSort(), cfS]C_6d  
new ShellSort(), nHjwT5Q+Q  
new QuickSort(), gMn)<u>  
new ImprovedQuickSort(), jQ}| ]pj+  
new MergeSort(), sTyGi1  
new ImprovedMergeSort(), /^G+vhlf\  
new HeapSort() @CDRbXoFk  
}; ^umAfk5r?H  
rnE'gH(V'  
public static String toString(int algorithm){ Su#1yw>  
return name[algorithm-1]; *2;3~8Y  
} L 3@wdC ~0  
c= u ORt>  
public static void sort(int[] data, int algorithm) { Yg.u8{H  
impl[algorithm-1].sort(data); :tG5~sK  
} Q.\ovk~,a  
xRN$cZC  
public static interface Sort { I5?LD=tt  
public void sort(int[] data); 9~I WGj?  
} _P1-d`b0 a  
j"s(?  
public static void swap(int[] data, int i, int j) { 2Wtfx" .y  
int temp = data; DlI|~  
data = data[j]; +Wc[ $,vk  
data[j] = temp; 9k&$bC+Q  
} d o7{  
} `^vD4qD|  
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