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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。 aG&kl O>m  
插入排序: }N=zn7W  
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package org.rut.util.algorithm.support; E"vi+'(v  
CX@HG)l  
import org.rut.util.algorithm.SortUtil; m_Y}>  
/** |@uhq>&  
* @author treeroot Hwi7oXP  
* @since 2006-2-2 :Y&W)V-  
* @version 1.0 ?F:C!_  
*/ N/SB}F j  
public class InsertSort implements SortUtil.Sort{ )}Mt'd  
gj(l&F *@  
/* (non-Javadoc) 8*X L19N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d(cYtM,P  
*/ )fcpE,g'  
public void sort(int[] data) { [;\< 2=H  
int temp; r4qV}-E  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); G;.u>92r|  
} B=qRZA!DQ?  
} AF nl t  
} REe%>|   
@ F"ShT0  
} (%^TTe  
!N2 n@bo  
冒泡排序: <Ucfd G&Lp  
uY#58?>'j  
package org.rut.util.algorithm.support; b8xfV{3L  
nT6iS}h  
import org.rut.util.algorithm.SortUtil; dXy"yQ>{  
&ppZRdq]  
/** Pn){xfqDl  
* @author treeroot t7& GCZ  
* @since 2006-2-2 _ -FQ78C  
* @version 1.0 CMB$RLf  
*/ hQrsZv:Q  
public class BubbleSort implements SortUtil.Sort{ ]0nC;|]@Lx  
H5rNLfw '  
/* (non-Javadoc) +R jD\6bJb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6O?Sr,  
*/ UEb'E;  
public void sort(int[] data) { L ~' N6  
int temp; p~ VW3u]  
for(int i=0;i for(int j=data.length-1;j>i;j--){ YRX2^v ^[  
if(data[j] SortUtil.swap(data,j,j-1); |r!Qhb.!  
} ;C@^wI  
} .ceU @^  
} M> l+[U  
} jT_Tx\k  
yru}f;1  
} n!,TBCNX  
' =s*DL`0  
选择排序: [UrS%]OSR  
\d8=*Zpz7  
package org.rut.util.algorithm.support; oEf^o*5(  
$XzlW=3y  
import org.rut.util.algorithm.SortUtil; )Syf5I  
G\+MT(&5  
/** 8&iI+\lCy  
* @author treeroot B~?Q. <M  
* @since 2006-2-2 U0=zuRr n  
* @version 1.0 246!\zf  
*/ mLdyt-1  
public class SelectionSort implements SortUtil.Sort { eyp\h8!u_  
@Pg@ltUd  
/* #8HXR3L5=!  
* (non-Javadoc) gG?*Fi  
* {dH<Un(4Z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P_Ja?)GT  
*/ 4E94W,1%,Y  
public void sort(int[] data) { mqxy(zS]  
int temp; --hnv/AjI  
for (int i = 0; i < data.length; i++) { ?a_q!,8:  
int lowIndex = i; DFH6.0UW  
for (int j = data.length - 1; j > i; j--) { !!pi\J?sk  
if (data[j] < data[lowIndex]) { gDBQ\vM8  
lowIndex = j; > %*X2'^  
} + {dIs  
} DccsVR`7  
SortUtil.swap(data,i,lowIndex); q.Mck9R7  
} !S}Au Mw  
} @_Oe`j^  
Z9EQ|WfS#-  
} _ o3}Ly}  
c.> (/  
Shell排序: fXQRsL8 ]  
"C|l3X'  
package org.rut.util.algorithm.support; G+p>39P   
nWsz0v3'9  
import org.rut.util.algorithm.SortUtil; s$G8`$+i1  
OlFn<:V K  
/** jv^ L~<u  
* @author treeroot .DsYR/  
* @since 2006-2-2 ^aMdbB  
* @version 1.0 P.P>@@+d  
*/ I8:&Btf  
public class ShellSort implements SortUtil.Sort{ ${2fr&Tp  
XOFaS '.  
/* (non-Javadoc) H2KY$;X [  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2$UR " P  
*/ q{(&:~M  
public void sort(int[] data) { !Z)^c&  
for(int i=data.length/2;i>2;i/=2){ B)NB6dCp  
for(int j=0;j insertSort(data,j,i); (ytkq(  
} I(S6DkU  
} N#ObxOE6T"  
insertSort(data,0,1); \mG M#E  
} Ji=iq=S7  
r $2   
/** AXI:h"so  
* @param data J8'zvH&I  
* @param j m @ ?e <$  
* @param i Z}f_\d'  
*/ S!cXc/H-R  
private void insertSort(int[] data, int start, int inc) { 1i2O]e!  
int temp; jgIzB1H  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 3S?+G)qKo  
} %tLq&tyeY  
} Jp0.h8i  
} jXR+>=_  
<rF  
} 7mBL#T2   
>4b39/BM  
快速排序: z5/O8}Gz@  
</p.OaNe  
package org.rut.util.algorithm.support; \]El%j4  
iHB)wC`u  
import org.rut.util.algorithm.SortUtil; DVH><3FF  
+.cv,1Vx  
/** |SleSgS<#  
* @author treeroot i|GC 'XD@  
* @since 2006-2-2 ARo5 Ss{  
* @version 1.0 q"oNB-bz  
*/ ]^<~[QK_C  
public class QuickSort implements SortUtil.Sort{ W@=ilW3RD  
t T:yvU@a  
/* (non-Javadoc) U @|_5[nl  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .|-y+9IP  
*/ G.T1rUh=  
public void sort(int[] data) { !HYqM(|{.  
quickSort(data,0,data.length-1); cGKk2'v?  
} 4N&}hOM'S  
private void quickSort(int[] data,int i,int j){ 2D"/k'iA  
int pivotIndex=(i+j)/2; O/nS,Ux  
file://swap nt6"}vO  
SortUtil.swap(data,pivotIndex,j); @d|9(,Q  
IF1}}[Ht  
int k=partition(data,i-1,j,data[j]); k"$V O+}m  
SortUtil.swap(data,k,j); 9~yuyv4$  
if((k-i)>1) quickSort(data,i,k-1); r MlNp?{_  
if((j-k)>1) quickSort(data,k+1,j); K%;yFEZ  
~O6=dR  
} Is[0ri   
/** ":ycyN@g  
* @param data 79_MP  
* @param i Viw3 /K  
* @param j =KLYR UW  
* @return QZol( 2~Y  
*/ D.?gV_  
private int partition(int[] data, int l, int r,int pivot) { '-=?lyKv  
do{ I4'j_X t  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); %+~0+ev7r  
SortUtil.swap(data,l,r); rf@81Ds  
} |*i-Q @ D  
while(l SortUtil.swap(data,l,r); WW=7QC i  
return l; @$]h[   
} S8l+WF4q  
M;R>]wP"V  
} >Mn.|:DF]&  
R0[Gfq9M =  
改进后的快速排序: oLoa71Q}  
Z/x~:u_  
package org.rut.util.algorithm.support; bkTj Q  
ojri~erJE?  
import org.rut.util.algorithm.SortUtil; 9tO_hhEQ@  
FmPF7  
/** H'2 =yhtVh  
* @author treeroot ^E^:=Q?'_  
* @since 2006-2-2 $ }53f'QjW  
* @version 1.0 al/~  
*/ c@`P{ 6  
public class ImprovedQuickSort implements SortUtil.Sort { Wj&s5;2a  
&n|gPp77$  
private static int MAX_STACK_SIZE=4096; *O~D lf  
private static int THRESHOLD=10; G`jhzG  
/* (non-Javadoc) >\ W" 3.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0dW1I|jR  
*/ 9EEHLx"  
public void sort(int[] data) { K4"as9oFP  
int[] stack=new int[MAX_STACK_SIZE]; }O/Nn0,  
{8Ll\j@ "  
int top=-1; V|= 1<v  
int pivot; .;'xm_Gw<  
int pivotIndex,l,r; AO6;aT  
jo;n~>3P  
stack[++top]=0; /Q-!><riD  
stack[++top]=data.length-1; PLD!BD  
s6I]H  
while(top>0){ <OUAppH  
int j=stack[top--]; c1i7Rc{q  
int i=stack[top--];  (c"!0v  
IF=rD-x  
pivotIndex=(i+j)/2; N@g+51ye  
pivot=data[pivotIndex]; '5%DKz  
-nW-I\d%  
SortUtil.swap(data,pivotIndex,j); i!NGX  
:.<&Y=^  
file://partition L@wnzt  
l=i-1; ag6S"IXh  
r=j; F&0rI8Nr  
do{ #!2gxm;g  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); (w*$~p  
SortUtil.swap(data,l,r); ?~!h N,h  
} &m`  
while(l SortUtil.swap(data,l,r); =GF+hM/~  
SortUtil.swap(data,l,j); deNU[  
4{|lzo'&  
if((l-i)>THRESHOLD){ GCrN:+E0FJ  
stack[++top]=i; N`M5`=.  
stack[++top]=l-1; x K/`XY  
} wgrYZ^]  
if((j-l)>THRESHOLD){ rO NLbrj  
stack[++top]=l+1; Hl#o& *Ui"  
stack[++top]=j; aD4ln]sFxG  
} #r1x0s40D  
gU`QW_{  
} 9} vWTt0  
file://new InsertSort().sort(data); q9OIw1xQr*  
insertSort(data); k@w&$M{tPF  
} E^g6,Y:i9  
/** #\}hN~@F  
* @param data X_h+\ 7N>  
*/ YXvKDw'95  
private void insertSort(int[] data) { .}tL:^'~o  
int temp; @wo9;DW`  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); &c]x;#-y  
} 1yhx)m;f  
} E_++yK^=  
} A#T;Gi  
^C(AMT  
} _7Z$"  
t[<=QK  
归并排序: oR+Fn}mG  
txi m|)  
package org.rut.util.algorithm.support; !54%}x)3  
HjK|9  
import org.rut.util.algorithm.SortUtil; ^3e l-dZ  
'!_o`t@  
/** uuq?0t2Z  
* @author treeroot VR'w$mp  
* @since 2006-2-2 62W3W1: W  
* @version 1.0 n1H*][CK  
*/ lB-Njr  
public class MergeSort implements SortUtil.Sort{ })J]D~!p  
wtZe\ h  
/* (non-Javadoc) 9U+^8,5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U*-%V$3+w5  
*/ kr3ZqMfeI  
public void sort(int[] data) { l!oU9  
int[] temp=new int[data.length]; u", [ulP  
mergeSort(data,temp,0,data.length-1); KmMt:^9  
} 8J)x>6  
O". #B  
private void mergeSort(int[] data,int[] temp,int l,int r){ Z I8p(e  
int mid=(l+r)/2; ~sM334sQ  
if(l==r) return ; zNB G;\ W  
mergeSort(data,temp,l,mid); giI9-C  
mergeSort(data,temp,mid+1,r); &=f%(,+  
for(int i=l;i<=r;i++){ KVK@Snn   
temp=data; ~WVrtYJu  
} m^TkFt<BM  
int i1=l; ;$W|FpR2  
int i2=mid+1; +ux,cx.U"  
for(int cur=l;cur<=r;cur++){ (j2]:B Vu  
if(i1==mid+1) [x@iqFO9  
data[cur]=temp[i2++]; 9{+B l NZ  
else if(i2>r) ?f a/}|T  
data[cur]=temp[i1++]; towQoqv  
else if(temp[i1] data[cur]=temp[i1++]; f5'+F-`N  
else #*~#t4S-  
data[cur]=temp[i2++]; ^D!UF(H  
} akaQ6DIdG  
} aa$+(  
HbCM{A9  
} r=s7be  
y M>c**9  
改进后的归并排序: |`,%%p|T%  
Zu5`-[mw  
package org.rut.util.algorithm.support; Lw3Z^G  
3uN;*f  
import org.rut.util.algorithm.SortUtil; CA{c-kG  
3x eW!~  
/** 3Y>!e#  
* @author treeroot ETYw  
* @since 2006-2-2 d kPfdK}G  
* @version 1.0 *`|F?wF  
*/ XWK A0  
public class ImprovedMergeSort implements SortUtil.Sort { 1 ,Y-_e)  
n`}vcVL;  
private static final int THRESHOLD = 10; kGCd!$fsk  
hMi`n6m  
/* ^ng?+X>mP  
* (non-Javadoc) Zsaz#z|xW  
* VNF@)!l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uZi]$/ic  
*/ )bqO}_B  
public void sort(int[] data) { y6;A4p>  
int[] temp=new int[data.length]; N{f RZN  
mergeSort(data,temp,0,data.length-1); z~Gi/Ln  
} `NrxoU=  
j:rGFd  
private void mergeSort(int[] data, int[] temp, int l, int r) { $ -;,O8yR  
int i, j, k; 5r@x$*>e  
int mid = (l + r) / 2; "(/.3`g  
if (l == r) )| 3?7?X  
return; mL ]zkD_  
if ((mid - l) >= THRESHOLD) Fj|C+;Q.  
mergeSort(data, temp, l, mid); h%pgdix  
else $:SHZe  
insertSort(data, l, mid - l + 1); k/cQJz  
if ((r - mid) > THRESHOLD) ?PLf+S  
mergeSort(data, temp, mid + 1, r); CsXIq.9  
else LC/6'4}_  
insertSort(data, mid + 1, r - mid); ShFSBD\M#  
GJU84Xn7  
for (i = l; i <= mid; i++) { _z~|*7@  
temp = data; B_nim[72  
} | M4_@P  
for (j = 1; j <= r - mid; j++) { 9tWu>keu  
temp[r - j + 1] = data[j + mid]; iq=<LOx  
} L3,p8-d9Z  
int a = temp[l]; Beq zw0  
int b = temp[r]; Z_Hc":4i  
for (i = l, j = r, k = l; k <= r; k++) { YrFB~z.V  
if (a < b) { F:1w%#6av  
data[k] = temp[i++]; Js ~_8  
a = temp; qf7 lQovK  
} else { o{lR_  
data[k] = temp[j--]; g7rn|<6FI  
b = temp[j]; DhYQ>Gv8U  
} `VwZDU~6  
} i_Ab0vye  
} w>J|416  
GeD^-.^  
/** b+9M? k"  
* @param data I 4 ,C-D  
* @param l L slI!.(  
* @param i :[?hU}9  
*/ a)/!ifJ;  
private void insertSort(int[] data, int start, int len) { ??Q'| r  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Cj#$WZga%  
} |9Q4VY'";  
} K1Snag  
} Tq,Kel  
} }w}2'P'T  
buu~#m 1z  
堆排序: 0[/>> !ws  
fucG 9B  
package org.rut.util.algorithm.support; Q30A aG}f  
~7IXJeon  
import org.rut.util.algorithm.SortUtil; "AMbU6 8  
_o`+c wc  
/** ?A+-k4l  
* @author treeroot yY_Zq\   
* @since 2006-2-2 p"\Z@c  
* @version 1.0 bz<f u  
*/ <F{EZ Ii  
public class HeapSort implements SortUtil.Sort{ @ (<C{  
Q}C)az  
/* (non-Javadoc) :c)N"EJlI2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Fuq ;4UcbL  
*/ V(3^ev/  
public void sort(int[] data) { >Z r f}H  
MaxHeap h=new MaxHeap(); e:D8.h+ &}  
h.init(data); *")Req  
for(int i=0;i h.remove(); [|.IXdJ!  
System.arraycopy(h.queue,1,data,0,data.length); =bgzl=A`  
} _FR_6*C)5  
6}4?, r  
private static class MaxHeap{ ?5-Y'(r  
K%iWUl;  
void init(int[] data){ B|XrjI?  
this.queue=new int[data.length+1]; lLhvpvT  
for(int i=0;i queue[++size]=data; ;+jz=9Q-  
fixUp(size); jMr[ UZ  
} |C"(K-do  
} =z#6mSx|W  
i[_B~/_  
private int size=0; '-c *S]:r  
[@ >}  
private int[] queue; |7ct2o~un  
xU<WUfS1  
public int get() { .Nt;J,U  
return queue[1]; DXA<m2&64N  
} D y+)s-8  
n<q1itjD  
public void remove() { d^h`gu~3  
SortUtil.swap(queue,1,size--); y``[CBj  
fixDown(1); f3PDLQA  
} Bl[4[N  
file://fixdown  /5M0[C E  
private void fixDown(int k) { %  ]G'u  
int j; 7W[+e&  
while ((j = k << 1) <= size) { )<YfLDgTs  
if (j < size %26amp;%26amp; queue[j] j++; 6.5E d-  
if (queue[k]>queue[j]) file://不用交换 [QUaC3l)  
break; r)<c ~\0 7  
SortUtil.swap(queue,j,k); gOb"-;Zw  
k = j; M]|tXo$?  
} t^Z-0jH  
} kA/4W^]Ws  
private void fixUp(int k) { pNUe|b+P  
while (k > 1) { b:B+x6M  
int j = k >> 1; 4, EX2  
if (queue[j]>queue[k]) ^Mvgm3hg  
break; Ln+;HorZ]  
SortUtil.swap(queue,j,k); O1+OE!w  
k = j; "{9^SPsp  
} +%Z#!1u  
} uvG' Kx  
OTe h8h  
} (fNG51h!  
qkXnpv  
} l(A)Gd5>  
<=nOyT9  
SortUtil: 2 o)8'Lp  
d)>b/0CZ  
package org.rut.util.algorithm; fM/~k>wl  
L0\~ K~q  
import org.rut.util.algorithm.support.BubbleSort; Hnft1   
import org.rut.util.algorithm.support.HeapSort; VEsIhjQ  
import org.rut.util.algorithm.support.ImprovedMergeSort; 6+ UTEw;  
import org.rut.util.algorithm.support.ImprovedQuickSort; ^=Dz)95c  
import org.rut.util.algorithm.support.InsertSort; LO;7NK  
import org.rut.util.algorithm.support.MergeSort; m+|yk.md  
import org.rut.util.algorithm.support.QuickSort; k%D|17I  
import org.rut.util.algorithm.support.SelectionSort; gUr #3#  
import org.rut.util.algorithm.support.ShellSort; h;[<4zw  
,tTq25~H\  
/** Efp[K}Z^$  
* @author treeroot q!;u4J  
* @since 2006-2-2 )&6ZgRq  
* @version 1.0 o' EJ,8  
*/ *q&^tn b  
public class SortUtil { ;{lb_du2:  
public final static int INSERT = 1; E]O/'-  
public final static int BUBBLE = 2; t 7-6A  
public final static int SELECTION = 3; lxsn(- j  
public final static int SHELL = 4; O\J{4EB@.  
public final static int QUICK = 5; J5!-<oJ/  
public final static int IMPROVED_QUICK = 6; y g:&cIr,  
public final static int MERGE = 7; #_SsSD=.Sy  
public final static int IMPROVED_MERGE = 8; -xXdT$Xd  
public final static int HEAP = 9; G)IK5zCDd  
V1#:[o63+  
public static void sort(int[] data) { v? Zo5uVoq  
sort(data, IMPROVED_QUICK); DuQW?9^232  
} {h*)|J  
private static String[] name={ -{XDQ{z<%  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ZS<`.L6B3  
}; nV:RL|p2jw  
"l 8YD&q  
private static Sort[] impl=new Sort[]{ w2H^q3*  
new InsertSort(), "IHFme@^  
new BubbleSort(), H-,p.$3}  
new SelectionSort(), D_q"|D$SB  
new ShellSort(), }Y"vUl_I2  
new QuickSort(), G\z5Ue*  
new ImprovedQuickSort(), 8kLHQ0pmu  
new MergeSort(), QXu[<V  
new ImprovedMergeSort(), !$NQF/Ol  
new HeapSort() WJJmM*>JW  
}; 0Ke2%+yqJ  
~KQiNkA\|l  
public static String toString(int algorithm){ _vJ(F  
return name[algorithm-1]; <2af&-EG s  
} 7NvnCs  
3a?|}zr4  
public static void sort(int[] data, int algorithm) { od)ssL&E~  
impl[algorithm-1].sort(data); []jbzVwS2  
} F'-,Ksn  
qizQt]l  
public static interface Sort { Mt4*`CxtH;  
public void sort(int[] data); k:F{U^!p|  
} [sNvCE$\]  
@#=yC.s  
public static void swap(int[] data, int i, int j) { NTo[di\_  
int temp = data; <A(Bq'eQM  
data = data[j]; !k Heslvi  
data[j] = temp; R`J.vMT  
} 2w}l!'ue  
} GG`j9"t4  
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