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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。 PY76;D*`  
插入排序: VxAG= E  
V]5MIiNl  
package org.rut.util.algorithm.support; oiTSpd-  
A:4?Jd>  
import org.rut.util.algorithm.SortUtil; xS+!/pBf"Y  
/** %5 ovW<E:  
* @author treeroot WS6;ad;|  
* @since 2006-2-2 cfC}"As  
* @version 1.0 V)Sw\tS6g  
*/ gA:unsI  
public class InsertSort implements SortUtil.Sort{ _zK ~9/5  
Mc9JFzp  
/* (non-Javadoc) ]RxJ^'a63  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qHl>d*IZ  
*/ r]=Z :  
public void sort(int[] data) { eqSCE6r9x  
int temp; ~Z:)Y*  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ufn% sA  
} 7ND4Booul  
} {l9gYA  
} "8iIOeY-\  
rcAPp  
} ;Xl {m`E+  
g%_ 3  
冒泡排序: MS`XhFPS.  
0t(2^*I?>  
package org.rut.util.algorithm.support; TXS{=  
Sfa;;7W@R  
import org.rut.util.algorithm.SortUtil; p|>m 2(|  
odTa 2$O  
/** HV=P! v6  
* @author treeroot 1$)}EL   
* @since 2006-2-2 & d_2WQ}  
* @version 1.0 L]* 5cH  
*/ G$[Hm\V  
public class BubbleSort implements SortUtil.Sort{ )8`i%2i=  
-)Hc^'.  
/* (non-Javadoc) 8bdx$,$k  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Gzc`5n{"  
*/ V<ii  
public void sort(int[] data) { s=>^ 8[0O  
int temp;  Pm"nwm  
for(int i=0;i for(int j=data.length-1;j>i;j--){  OK(xG3T  
if(data[j] SortUtil.swap(data,j,j-1); T,9pd;k  
} t\WU}aKML  
} ~~3*o  
} b#( X+I  
} 9Cs/B*3)b  
g=$nNQ \6=  
} Ce/D[%  
/V }Z,'+  
选择排序: [0!*<%BgK'  
kjF4c6v  
package org.rut.util.algorithm.support; }t*:EgfI  
3Mq%3jX  
import org.rut.util.algorithm.SortUtil; 'iU+mRLp  
'?Xf(6o1  
/** ^fj30gw7\5  
* @author treeroot ct@3]  
* @since 2006-2-2 XzBlT( `w  
* @version 1.0 a Z8f>t1Q  
*/ E(_lm&,4+  
public class SelectionSort implements SortUtil.Sort { 84 <zTmm  
aA]wFZ  
/* K+ |0~/0  
* (non-Javadoc) (QS 0  
* zeD=-3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r72zWpF!Ss  
*/ |$C fm}  
public void sort(int[] data) { 1}~ZsrF  
int temp; oDWNOw  
for (int i = 0; i < data.length; i++) { 0|kH0c,T-  
int lowIndex = i; 8p#V4liE  
for (int j = data.length - 1; j > i; j--) { $ I J^  
if (data[j] < data[lowIndex]) { m^ /s}WEqp  
lowIndex = j; JfRLqA/  
} #~4;yY\$I  
} kP1cwmZ7F  
SortUtil.swap(data,i,lowIndex); a4 mRu|x  
} |-TxX:O-  
} WidLUv   
VAp 1{  
} YIF|8b\  
aTkMg  
Shell排序: 3G'cDemc  
M5 P3;  
package org.rut.util.algorithm.support; o$#q/L  
t$b5,"G1  
import org.rut.util.algorithm.SortUtil; b3ys"Vyn  
nG$+9}\UlP  
/** ,/"0tP&_;  
* @author treeroot <Ira~N  
* @since 2006-2-2 Z&n#*rQ7[  
* @version 1.0 to?={@$]  
*/ U#%+FLX@w  
public class ShellSort implements SortUtil.Sort{ r::0\{{r"p  
I%{ 1K+V/  
/* (non-Javadoc) jW{bP_,"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XePGOw))O  
*/ >`<qa!9  
public void sort(int[] data) { s^k<r;'\  
for(int i=data.length/2;i>2;i/=2){ .LGA0  
for(int j=0;j insertSort(data,j,i); lQv (5hIm  
} [<sN "  
} fNV-_^,R9  
insertSort(data,0,1); g>g*1oS  
} `~D{]'j  
2Z?l,M~  
/** \}AJ)v*<  
* @param data EHfB9%O7y  
* @param j R 5\|pC  
* @param i -wVuM.n(Z  
*/ FH{p1_kZ=  
private void insertSort(int[] data, int start, int inc) { 'wWuR@e#&  
int temp; hxt;sQAo{  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); c< sq0('`  
} 8T8]gM  
} `NNP}O2  
} 4ves|pLET  
j=c< Lo`  
} $W9dUR0  
a*t>Ks'C  
快速排序: ZiRCiQ/?  
k"6v& O  
package org.rut.util.algorithm.support; ?J-D6;  
03_M+lv  
import org.rut.util.algorithm.SortUtil; h gu\~}kD  
wYDdy gS  
/** )@<HG$#  
* @author treeroot ?X Rl\V  
* @since 2006-2-2 !}sF#  
* @version 1.0 Oc-ia)v1G  
*/ _:FD#5BZ1  
public class QuickSort implements SortUtil.Sort{ )P,pW?h$  
qTN30(x2  
/* (non-Javadoc) +O)ZB$w4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +??pej]Rp  
*/ ?O"zp65d(  
public void sort(int[] data) { ~S$ex,~  
quickSort(data,0,data.length-1); ,!X:wY}dW  
} 8"A0@fNz  
private void quickSort(int[] data,int i,int j){ +11 oVW  
int pivotIndex=(i+j)/2; v^;vH$B  
file://swap wL}X~Xa3i  
SortUtil.swap(data,pivotIndex,j); ~qX wQ@  
)\7Cp-E-W  
int k=partition(data,i-1,j,data[j]); 2`> (LH  
SortUtil.swap(data,k,j); w ~^{V4V  
if((k-i)>1) quickSort(data,i,k-1); H%Z;Yt8^gt  
if((j-k)>1) quickSort(data,k+1,j); -:~z,F  
hLVgP&/ E  
} ,1]VY/  
/** \FF|b"E_=  
* @param data MO|Pv j~[  
* @param i ,@I\'os  
* @param j GIfs]zVr`  
* @return Z-yoJZi  
*/ 5kADvi.  
private int partition(int[] data, int l, int r,int pivot) { 5DO}&%.xt  
do{ Vy^mEsQC+h  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); @1U6sQ  
SortUtil.swap(data,l,r); [z6P]eC7  
} Vt-V'`Y  
while(l SortUtil.swap(data,l,r); eu?P6>urA  
return l; [{#n?BT  
} P.(z)!]  
0DN&HMI#  
} AS0mM HJk  
rB|4  
改进后的快速排序: 9$}> O]  
:XTxrYt28  
package org.rut.util.algorithm.support; &Aym@G|k?  
[E"3 ?p  
import org.rut.util.algorithm.SortUtil; nFe  
yo$A0Ti!w  
/** >h~>7i(A  
* @author treeroot {hm-0Q  
* @since 2006-2-2 *~w?@,}  
* @version 1.0 JvaHH!>d/  
*/ ]mjKF\  
public class ImprovedQuickSort implements SortUtil.Sort { .'4@Yp{=  
A7eYKo q  
private static int MAX_STACK_SIZE=4096; Z-M4J;J@}  
private static int THRESHOLD=10; 2wgcVQ Awa  
/* (non-Javadoc) 1_StgFu u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \&U"7gSL  
*/ bjN"H`Q  
public void sort(int[] data) { vV*/"'>  
int[] stack=new int[MAX_STACK_SIZE]; JeAyT48!M  
wRq f'  
int top=-1; :c`djM^ll  
int pivot; XhN?E-WywQ  
int pivotIndex,l,r; F5M{`:/  
yVJ)JhV  
stack[++top]=0; /Ao.b|mm  
stack[++top]=data.length-1; sDu&9+  
+vPCr&40  
while(top>0){ =#wE*6T9  
int j=stack[top--]; T+FlN-iy)  
int i=stack[top--]; dEor+5}  
zm4e+v-  
pivotIndex=(i+j)/2; m`b:#z  
pivot=data[pivotIndex]; i98PlAq)B  
Ct:c%D(L  
SortUtil.swap(data,pivotIndex,j); Tz7R:S.  
1{ ehnH  
file://partition q!q=axfMD  
l=i-1; w(ic$  
r=j; w;J#+ik  
do{ yA`,ns&n  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); :K(+ KN(  
SortUtil.swap(data,l,r); RER93:(  
} %WYveY  
while(l SortUtil.swap(data,l,r); A-eCc#I  
SortUtil.swap(data,l,j); =,&{ &m)  
e'=#G$S?g  
if((l-i)>THRESHOLD){ `qZ@eGZ z  
stack[++top]=i; Rn{X+b.  
stack[++top]=l-1; h*sL' fJ]  
} n:Dr< q .  
if((j-l)>THRESHOLD){ zP/SDW   
stack[++top]=l+1; s8k4e6ak  
stack[++top]=j; XHY,;4  
} L rV|Y~  
"\M3||.!  
} s5X51#J#~  
file://new InsertSort().sort(data); En0hjXa  
insertSort(data); ENf(E9O  
} [kPl7[OL  
/** h9~oS/%:  
* @param data ;:bnLSPo  
*/ x7xQrjE  
private void insertSort(int[] data) { C.se/\PE  
int temp; ZKi?;ta=  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Yof ]  
} s##XC^;p[  
} '47E8PIJ|  
} gpCWXz')i  
&@qB6!^  
} V~t; J  
P+0 -h  
归并排序: p#gf^Y5  
cWI7];/d;  
package org.rut.util.algorithm.support; SWNT}{x]  
_G%kEt_4  
import org.rut.util.algorithm.SortUtil; jLEO-<)-)  
c2d1'l]n  
/** vQ{mEaH  
* @author treeroot )xTu|V   
* @since 2006-2-2 R5<:3tk=X  
* @version 1.0 |lVi* 4za%  
*/ vnX~OVz2  
public class MergeSort implements SortUtil.Sort{ gNh4c{Al9  
y"zZ9HQM  
/* (non-Javadoc) G52z5-=v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "h&[6-0'  
*/ qc6d,z/  
public void sort(int[] data) { \u6/nvZ]N  
int[] temp=new int[data.length]; =DI/|^j{ ;  
mergeSort(data,temp,0,data.length-1); ;Udx|1o  
} <In+V  
kB-<17  
private void mergeSort(int[] data,int[] temp,int l,int r){ gyC Xv0*z  
int mid=(l+r)/2; `,FhCT5  
if(l==r) return ; A.<M*[{q  
mergeSort(data,temp,l,mid); \K:?#07Wj4  
mergeSort(data,temp,mid+1,r); ?6:e%YT  
for(int i=l;i<=r;i++){ jf& oN]sZ  
temp=data; `V?NS,@$  
} ")W5`9  
int i1=l; =8 DS~J{  
int i2=mid+1; N2Cf(  
for(int cur=l;cur<=r;cur++){ !Eb!y`jK  
if(i1==mid+1) +^%0/0e  
data[cur]=temp[i2++]; XZ|\|(6Cc  
else if(i2>r) IZxr;\dq6  
data[cur]=temp[i1++]; \Pd>$Q  
else if(temp[i1] data[cur]=temp[i1++]; 7#9fcfL  
else CW~c<,"  
data[cur]=temp[i2++]; }`uq:y  
} @DyMq3Gt?&  
} t>"|~T$9  
8ya|eJ]/L  
} ?lIh&C8]X  
1xsB@D  
改进后的归并排序: 4& 9V  
et`rPK~m  
package org.rut.util.algorithm.support; qn` \g  
TZ PUVOtL_  
import org.rut.util.algorithm.SortUtil; Y,X0x-  
 e:6mz\J  
/** szy2"~hm  
* @author treeroot Kp/l2?J"  
* @since 2006-2-2 'Y>@t6E4  
* @version 1.0 `(@{t:L  
*/ ABhQ7 x|  
public class ImprovedMergeSort implements SortUtil.Sort { p1,.f&(f  
,h.hgyt  
private static final int THRESHOLD = 10; Ewo6Q){X  
gq)uv`3  
/* R78lV -};Q  
* (non-Javadoc) v0+$d\mP4<  
* ,v(ikPzd  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e{*z4q1  
*/ iD:T KB_r  
public void sort(int[] data) { 8{p#Nl?U1  
int[] temp=new int[data.length]; }M9I]\  
mergeSort(data,temp,0,data.length-1); HH^yruP\}  
} r5uX?^mJ0  
4I;$a;R!  
private void mergeSort(int[] data, int[] temp, int l, int r) { E}|IU Pm  
int i, j, k; UFr5'T  
int mid = (l + r) / 2; v t}A6mF  
if (l == r) }/F9(m  
return; k i{8f  
if ((mid - l) >= THRESHOLD) }yM!o`90  
mergeSort(data, temp, l, mid); Z]^O=kX7k  
else %eE 6\f%g  
insertSort(data, l, mid - l + 1); D}bCMN <  
if ((r - mid) > THRESHOLD) q_0,KOGW  
mergeSort(data, temp, mid + 1, r); HO39>:c  
else $eh>.c'&]  
insertSort(data, mid + 1, r - mid); E^V4O l<  
NKRH>2,  
for (i = l; i <= mid; i++) { Br"K{g?  
temp = data; 0u ,nSvch  
} hu-6V="^9  
for (j = 1; j <= r - mid; j++) { h) W|~y@  
temp[r - j + 1] = data[j + mid]; lf2(h4[1R  
} @86I|cY  
int a = temp[l]; H`8}w{ft&  
int b = temp[r]; rh6m  
for (i = l, j = r, k = l; k <= r; k++) { _U%2J4T2  
if (a < b) { +v|]RgyW)  
data[k] = temp[i++]; ,a} vx"~  
a = temp; /QVhT  
} else { IL<@UWs6  
data[k] = temp[j--]; bH_zWk  
b = temp[j]; mbO.Kyfen  
} RMBPm*H  
} K=;oZYNd  
} 9AZpvQ  
Z~ DR,:  
/** }&IOBYHVDo  
* @param data (hIy31Pf  
* @param l 'E1m-kJz  
* @param i jftf]n&Z(q  
*/ u/X1v-2  
private void insertSort(int[] data, int start, int len) { 0 I[3%Q{  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); .T^e8  
} T3^(I~03  
} q!}O+(kt  
} Y f;Slps  
} l\~F0Z/O  
i^&^eg'.5  
堆排序: :<`po4/  
,c[f/sT\  
package org.rut.util.algorithm.support; ^es/xt  
psE&Rx3)  
import org.rut.util.algorithm.SortUtil; !"N-To-c  
VAZ6;3@cd  
/** k>72W/L^  
* @author treeroot hdx"/.s  
* @since 2006-2-2 kV+O|9  
* @version 1.0 ,$; pLjo6  
*/ :HDU \|{^  
public class HeapSort implements SortUtil.Sort{ %jmL#IN)  
>^%TY^7n  
/* (non-Javadoc) i@STo7=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WhN~R[LE_  
*/ @wOX</_g  
public void sort(int[] data) { CqbPUcK  
MaxHeap h=new MaxHeap(); OqA#4h4^  
h.init(data); :LBRyBV  
for(int i=0;i h.remove(); aak[U;rx  
System.arraycopy(h.queue,1,data,0,data.length); tD\%SiTg=b  
} RJT=K{2x  
|fg{Fpc  
private static class MaxHeap{ Tjza3M  
8yn}|Y9Fu  
void init(int[] data){ ^jZ4tH3K  
this.queue=new int[data.length+1]; ekhx?rz  
for(int i=0;i queue[++size]=data; X\'+);Z  
fixUp(size); Kq2,J&Ca3  
} cAc>p-y%  
} <46fk*  
V<G=pPC'H  
private int size=0; U<mFwJ C]  
x6B_5eF  
private int[] queue; h[I~D`q)v  
6$*ZH *  
public int get() { v6`TbIq%  
return queue[1]; w-9fskd6e  
} ([L5i&DT  
$oU40HA)W]  
public void remove() { {9*k \d/;  
SortUtil.swap(queue,1,size--); UFY_.N~  
fixDown(1); 7Q3a0`Iq  
} k874tD  
file://fixdown x6={)tj  
private void fixDown(int k) { tgB\;nbB  
int j; ?:XbZ"25pJ  
while ((j = k << 1) <= size) { "OO"Ab{t  
if (j < size %26amp;%26amp; queue[j] j++; l9Sx'<  
if (queue[k]>queue[j]) file://不用交换 $M 1/74  
break; cq \()uF'c  
SortUtil.swap(queue,j,k); p8a \> {  
k = j; 1dahVc1W  
} 2[R{IV8e  
} _0(Bx?[h  
private void fixUp(int k) { Pf?y!d K<  
while (k > 1) { V8{5 y <Y>  
int j = k >> 1; }hd:avze  
if (queue[j]>queue[k]) QvN=<V  
break; ?A7_&=J%  
SortUtil.swap(queue,j,k); |T@\ -8Ok  
k = j; {(MC]]'?  
} _.y0 QkwV  
}  ^q=D!g  
_@Le MNv  
} {(,[  
JD}"_,-  
} l.Qv9Ll|b  
%d/Pc4gfc  
SortUtil: w0i v\yIRQ  
HKZD*E((  
package org.rut.util.algorithm; Z U^dLN- N  
KixS)sG  
import org.rut.util.algorithm.support.BubbleSort; r|>a;n Y  
import org.rut.util.algorithm.support.HeapSort; 2po>%Cp  
import org.rut.util.algorithm.support.ImprovedMergeSort; 1^4z/<ZWm  
import org.rut.util.algorithm.support.ImprovedQuickSort; N1O.U"L;  
import org.rut.util.algorithm.support.InsertSort; ``p( )^zT  
import org.rut.util.algorithm.support.MergeSort; qvH7otA  
import org.rut.util.algorithm.support.QuickSort; U*s QYt<?g  
import org.rut.util.algorithm.support.SelectionSort; 9OnH3  
import org.rut.util.algorithm.support.ShellSort; bijE]:<AE7  
~@wM[}ThP$  
/** ^ A`@g4!  
* @author treeroot O8drR4 Pt  
* @since 2006-2-2 SuU_psF  
* @version 1.0 `pzXh0}|  
*/ rL /e  
public class SortUtil { 8I`t`C/4  
public final static int INSERT = 1; |3A/Og  
public final static int BUBBLE = 2; a*Oc:$  
public final static int SELECTION = 3; xF4>D!T%8  
public final static int SHELL = 4; tgPx!5U  
public final static int QUICK = 5; Y]SX2kk(2  
public final static int IMPROVED_QUICK = 6; {:;599l  
public final static int MERGE = 7; *$I5_A8,.  
public final static int IMPROVED_MERGE = 8; = UT^5cl(  
public final static int HEAP = 9; (ugB3o  
c[~LI<>ic  
public static void sort(int[] data) { }(/")i4h  
sort(data, IMPROVED_QUICK); " tUS>c/  
} Ikn)XZU^  
private static String[] name={ %ur_DQ  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Z`=[hu  
}; gfPht 5  
y.l`NTT] <  
private static Sort[] impl=new Sort[]{ ^}gQh#  
new InsertSort(), e /4{pe+,  
new BubbleSort(), 9{;cp?\)M  
new SelectionSort(), VQQtxHTC3  
new ShellSort(), K38A;=t9  
new QuickSort(), T7!"gJ  
new ImprovedQuickSort(), PsLMV:O9S  
new MergeSort(), v;q<h  
new ImprovedMergeSort(), 8Q%rBl.  
new HeapSort() J4-64t nZ  
}; zdoJ+zRtK  
JIl<4 %A  
public static String toString(int algorithm){ *hP9d;-Ar  
return name[algorithm-1]; %$)[qa3  
} FM)Es&p&  
-Tw96 dv  
public static void sort(int[] data, int algorithm) { #Tjv(O[&  
impl[algorithm-1].sort(data); %)Pn<! L  
} [=63xPxs.  
{q[l4_  
public static interface Sort { `Eijy3>h  
public void sort(int[] data); T w!]N%E  
} >0W:snNK  
o<hT/ P  
public static void swap(int[] data, int i, int j) { u7oHqo`  
int temp = data; dsx'l0q 'i  
data = data[j]; VZ`L-P$AF  
data[j] = temp; Y R2Q6}xR  
} J5Nz<  
} S+d@RMdes  
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