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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。 !'MD8  
插入排序: Cwh;+3?C|  
1&As:kv5I  
package org.rut.util.algorithm.support; 3//v{ce1]  
N}h%8\  
import org.rut.util.algorithm.SortUtil; N~kYT\$b#  
/** P3|<K-dFAK  
* @author treeroot +]zP $5_e  
* @since 2006-2-2 fh 3 6  
* @version 1.0 $3Ia+O   
*/ gc:>HX );)  
public class InsertSort implements SortUtil.Sort{ c8s/`esA  
od fu7P_  
/* (non-Javadoc) NEH$&%OV?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y$"L`*W  
*/ N{yZk"fq:6  
public void sort(int[] data) { qprOxP r  
int temp; 8UcT? Zp  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); |Wgab5D>V  
} ?C{N0?[P-  
} ZM.g +-9  
} # 0 (\s@r.  
}>:X|4]  
} TK>}$.c%+  
;v'Y' !-J  
冒泡排序: OY#_0p)i  
z~5'p(|@f  
package org.rut.util.algorithm.support; pk4&-iu9  
Jp#cFUa t  
import org.rut.util.algorithm.SortUtil; `QF|> N  
iy"K g]  
/** 'W*F[U*&HP  
* @author treeroot [)pT{QA  
* @since 2006-2-2 Sx"I]N  
* @version 1.0 d!:SoZ  
*/ `y#C%9#  
public class BubbleSort implements SortUtil.Sort{ J#]y KgT  
4\3t5n  
/* (non-Javadoc) jayoARUB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2Qj)@&zKe#  
*/ \#r_H9&s6  
public void sort(int[] data) { `ahXn  
int temp; R2s>;V.:  
for(int i=0;i for(int j=data.length-1;j>i;j--){ t_dg$KB  
if(data[j] SortUtil.swap(data,j,j-1); 9="sx 8?  
} 9R[','x  
} $C/Gn~k 5  
} y|se^dn  
} %R>S"  
(ce NVo&  
} zJ`(LnV  
4C cb!?  
选择排序: A'8K^,<  
mg(56)  
package org.rut.util.algorithm.support; k]iS3+nD  
cF vx* n  
import org.rut.util.algorithm.SortUtil; #VE$C3<  
{  9$Q|XK  
/** O2dgdtm  
* @author treeroot :bDA<B6bb  
* @since 2006-2-2 R.T-Ptene  
* @version 1.0 $ZO<8|bW  
*/ vBx^zDe  
public class SelectionSort implements SortUtil.Sort { =;=V4nKN  
6%#'X  
/* tV9C33  
* (non-Javadoc) a)Ek~{9  
* B;r$( 'UZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yFo5pKF.J  
*/ eHe /w9`$R  
public void sort(int[] data) { `qz5rPyZ  
int temp; .*blM1+6i/  
for (int i = 0; i < data.length; i++) { *Rh .s!@4  
int lowIndex = i; !.$P`wKr  
for (int j = data.length - 1; j > i; j--) { xk8p,>/  
if (data[j] < data[lowIndex]) { pQ{t< >  
lowIndex = j; w"iZn  
} uLljM{ I  
} T}[vfIJD  
SortUtil.swap(data,i,lowIndex); C>dJ:.K%H  
} E 5{)d~q  
} Dt.Wb&V_w  
/ nFw  
} % cdP*  
VH6|(=8  
Shell排序: <1BK 5%?  
VBJ]d|  
package org.rut.util.algorithm.support; , ~X;M"U  
qu+2..3  
import org.rut.util.algorithm.SortUtil; @F^L4 N':  
#.YcIR)  
/** );DIrA  
* @author treeroot `kSCH; mwP  
* @since 2006-2-2 8]\h^k4f  
* @version 1.0 {fv8S;|u  
*/ oZ:F3 GQ4Q  
public class ShellSort implements SortUtil.Sort{ ueBoSZRWX  
{{%8|+B  
/* (non-Javadoc) MToQ8qKs  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .G~5F- 8'  
*/ }{oBKm9_p  
public void sort(int[] data) { _PXo'*j  
for(int i=data.length/2;i>2;i/=2){ 5q`)jd!*)  
for(int j=0;j insertSort(data,j,i); {OrE1WHB  
} RsfT Ub)<  
} 5udoZ >T  
insertSort(data,0,1); 2{Iz  
} ^X%4@,AE  
 89=JC[c  
/** '|N4fbZd  
* @param data G%R`)Z]8&  
* @param j O>5u5n  
* @param i WC*:\:mh  
*/ e*6` dz@  
private void insertSort(int[] data, int start, int inc) { #@s~V<rW  
int temp; <" l;l~Y1  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); , %O3^7i  
} `f+g A  
} E*CQG;^=N  
} 1|w:xG^  
z2V8NUn  
}  .OS?^\  
*"{Z?< 3  
快速排序: VhIIW"1  
gD+t'qg$  
package org.rut.util.algorithm.support; 59BHGvaF  
psy(]Pf  
import org.rut.util.algorithm.SortUtil; Pt0}9Q  
(G%gVk]  
/** ~<[5uZIo  
* @author treeroot KqUSTR1e[  
* @since 2006-2-2 @/NZ>.  
* @version 1.0 i=H>D  
*/ NZW)X[nXM  
public class QuickSort implements SortUtil.Sort{ :42;c:85  
Mqf}Aiqk;  
/* (non-Javadoc) SH$cn,3F8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `oRs-,d|<  
*/ A<CXdt+t  
public void sort(int[] data) { ff./DMDafI  
quickSort(data,0,data.length-1); cBR8HkP~  
} wK`ieHmp  
private void quickSort(int[] data,int i,int j){ R6Z}/m  
int pivotIndex=(i+j)/2; M #=5u`h  
file://swap ~2DV{dyj  
SortUtil.swap(data,pivotIndex,j); ~w9 =Fd6  
MGKeD+=5  
int k=partition(data,i-1,j,data[j]); 2$W,R/CLh  
SortUtil.swap(data,k,j); 8Pr7aT:,  
if((k-i)>1) quickSort(data,i,k-1); n9fA!Wic  
if((j-k)>1) quickSort(data,k+1,j); fy>And*  
bok 74U]  
} r5da/*G/O  
/** z/&a\`DsU  
* @param data N z3%}6F:  
* @param i *[~o~e/YCb  
* @param j qq7X ",s  
* @return \ jXN*A  
*/ !v4j`A;%  
private int partition(int[] data, int l, int r,int pivot) { =*:_swd  
do{ !"x7re  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); #iU8hUbo  
SortUtil.swap(data,l,r); 4'hcHdL9   
} ig _<kj;Vd  
while(l SortUtil.swap(data,l,r); OPt;G,$ta  
return l; IgR"eu U  
} J[Yg]6  
CC(*zrOd-  
} S{(p<%)[  
ME@6.*  
改进后的快速排序: h 4.=sbzZ  
 ; zE5(3x  
package org.rut.util.algorithm.support; fQy C6C  
$EGRaps{j>  
import org.rut.util.algorithm.SortUtil; V]kGcS}  
u}LX,B-n(  
/** }Wche/g`  
* @author treeroot 3) c K*8#  
* @since 2006-2-2 ) !}-\5F  
* @version 1.0 ;, v L  
*/ P9TBQW2G{  
public class ImprovedQuickSort implements SortUtil.Sort { +=~%S)9F  
O:^LQ  
private static int MAX_STACK_SIZE=4096; zPh\3B  
private static int THRESHOLD=10; 5H :~6z  
/* (non-Javadoc) X*9N[#wu6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) } wOpPN[4  
*/ :{ WrS  
public void sort(int[] data) { %::deV7  
int[] stack=new int[MAX_STACK_SIZE]; dbuJ~?D,  
6+B{4OY  
int top=-1; hN_f h J  
int pivot; Am4^v?q  
int pivotIndex,l,r; Q6!v3P/h  
^*x Hy`  
stack[++top]=0; M|({ 4C  
stack[++top]=data.length-1; %w8GGm8^/  
_:Jp*z  
while(top>0){ 71.\`'  
int j=stack[top--]; oAZF3h]po  
int i=stack[top--]; lHKf#|  
-?YTQ@ W  
pivotIndex=(i+j)/2; 5%Oyvt]}2  
pivot=data[pivotIndex]; b~r{J5x@  
W\qLZuQ  
SortUtil.swap(data,pivotIndex,j); ./&zO{|0]  
,s><kHJ  
file://partition Vl 19Md  
l=i-1; 95^i/6Gl!P  
r=j; Gkv~e?Kc~^  
do{ \SiHrr5  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); a\{1UD  
SortUtil.swap(data,l,r); I!@s6tG  
} y3cf[Q  
while(l SortUtil.swap(data,l,r); t `Y!"l  
SortUtil.swap(data,l,j); 8@ %mnyQ  
Zv|p>q`R2  
if((l-i)>THRESHOLD){ 09 39i_  
stack[++top]=i; hH1lgc  
stack[++top]=l-1; EzIs@}  
} _}e7L7B7g  
if((j-l)>THRESHOLD){ fzS`dL5,W  
stack[++top]=l+1; mGe|8In  
stack[++top]=j; GjeUUmr  
} 9:%n=URd  
`D)Lzm R  
} ,]Ro',A&  
file://new InsertSort().sort(data); (/SGT$#8  
insertSort(data); jWXR__>.  
} P1i*u0a  
/** ^}o7*   
* @param data %-# q O  
*/ SY'2A)  
private void insertSort(int[] data) { dCZ\ S91q  
int temp; #`La|a.-  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); os1?6 z~  
} Zn@W7c,_I  
} G` ,u40a  
} 3$c(M99r  
ok`]:gf  
} [6; N3?+  
69C8-fF0[I  
归并排序: hI|/>4<  
,{?q^"  
package org.rut.util.algorithm.support; ,\o<y|+`S  
n$XdSh/   
import org.rut.util.algorithm.SortUtil; y !<'rg  
20UqJM8 Ot  
/** aXdf>2c{JD  
* @author treeroot #e.jY_  
* @since 2006-2-2 X*sr  
* @version 1.0 P3iA(3I24<  
*/ X"[dQ_o  
public class MergeSort implements SortUtil.Sort{ k7^R,.c@  
!TP6=ks  
/* (non-Javadoc) ohrw\<xsu  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =s'XR@  
*/ &:V@2_6"  
public void sort(int[] data) { -B1YZ/.rz"  
int[] temp=new int[data.length]; 4K9Rpm  
mergeSort(data,temp,0,data.length-1); 'aD6>8/Hj  
} nW4Vct  
`,wc Q  
private void mergeSort(int[] data,int[] temp,int l,int r){ u12zRdn  
int mid=(l+r)/2; 8RdP:*HY  
if(l==r) return ; y(bsCsV&  
mergeSort(data,temp,l,mid); 'h-3V8m^e  
mergeSort(data,temp,mid+1,r); J=UZ){c>:.  
for(int i=l;i<=r;i++){ d5DP^u  
temp=data; ! FNf>z+  
} 5x8'K7/4.  
int i1=l; Tu]&^[B('  
int i2=mid+1; ],8;eq%W)  
for(int cur=l;cur<=r;cur++){ `gBD_0<T7  
if(i1==mid+1) _QR g7  
data[cur]=temp[i2++]; iQt!PMF.  
else if(i2>r) b5A Gk  
data[cur]=temp[i1++]; F:%^&%\  
else if(temp[i1] data[cur]=temp[i1++]; I4)Nb WQ  
else ?75\>NiR  
data[cur]=temp[i2++]; dQ:?<zZ  
} K7IyCcdB  
} Kb}MF9?:e  
C"w,('~@kW  
} z!fdx|PUX  
$ye^uu;Z  
改进后的归并排序: xXF2"+  
(NX)o P  
package org.rut.util.algorithm.support;  ]}Pl%.  
[ S5bj]D  
import org.rut.util.algorithm.SortUtil; hwiKOP  
HOE2*4r  
/** ibvJWg  
* @author treeroot {G]?{c)"  
* @since 2006-2-2 Qi_&aU$>lM  
* @version 1.0 {  |s/]W  
*/ tNU-2r   
public class ImprovedMergeSort implements SortUtil.Sort { y-'" >  
Cz_AJ-WR  
private static final int THRESHOLD = 10; <}d/v_+pnh  
sf`PV}a1  
/* MRQZIi  
* (non-Javadoc) M Hg6PQIB  
* \M9 h&I\7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [*Q-nZ/L  
*/  }mKwFVZ  
public void sort(int[] data) { Zvxp%dES  
int[] temp=new int[data.length]; :/B:FY=  
mergeSort(data,temp,0,data.length-1); *ksb?|<Ot  
} &.zj5*J  
*vYn_wE  
private void mergeSort(int[] data, int[] temp, int l, int r) { @%c81rv?  
int i, j, k; `\!X}xiWd  
int mid = (l + r) / 2; [OzzL\)3l  
if (l == r) G*B$%?n  
return; GR<c=   
if ((mid - l) >= THRESHOLD) c<?[d!vI  
mergeSort(data, temp, l, mid); jo)6 %w]  
else i3\~Qj;1  
insertSort(data, l, mid - l + 1); H)E^!eo  
if ((r - mid) > THRESHOLD) IV0[!D  
mergeSort(data, temp, mid + 1, r); W<v_2iVu  
else 7F9;Su3.  
insertSort(data, mid + 1, r - mid); `)$`-Pw*  
<s_=-" il  
for (i = l; i <= mid; i++) { ?4 qkDtm  
temp = data; BEWro|]cM  
} l7z 6i*R  
for (j = 1; j <= r - mid; j++) { atyu/+U'}  
temp[r - j + 1] = data[j + mid]; 1Y#HcW&  
} SG:bM7*1'  
int a = temp[l]; e2c1pgs&+  
int b = temp[r]; %*kLEA*v  
for (i = l, j = r, k = l; k <= r; k++) { c` , 2h#  
if (a < b) { FI8k;4|V  
data[k] = temp[i++]; n$4|P O$X  
a = temp; <c+K3P'3?  
} else { X8b|]Nr  
data[k] = temp[j--]; [SkKz>rC  
b = temp[j]; qgx?"$ Z  
} :6Pnie  
} =NZ[${7mq  
} D<t~e$H  
SauH>  
/** dv , C6t2  
* @param data {^J!<k,R\;  
* @param l ]dG\j^e|  
* @param i T1W:>~T5#  
*/ b#/i.!:a  
private void insertSort(int[] data, int start, int len) { U]1(&MgV  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ^/dS>_gtHv  
} \tx%WC  
} 0I 5&a  
} v0#*X5C1'  
} B_ k2u  
DK6? E\<  
堆排序: b}@(m$W  
*tc{vtuu~^  
package org.rut.util.algorithm.support; %v{1# ~u  
Ly7!R$X  
import org.rut.util.algorithm.SortUtil; H-I{-Fm  
~zF2`.  
/** , ECLqs%  
* @author treeroot a }'->H  
* @since 2006-2-2 pjw aL^  
* @version 1.0 +?[BU<X6u  
*/ _6MdF<Xb/  
public class HeapSort implements SortUtil.Sort{ B[F-gq-  
KzphNHd  
/* (non-Javadoc) ``u:lL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Gr: 3{o`  
*/ !8R@@,_v  
public void sort(int[] data) { }H RK?.Vj:  
MaxHeap h=new MaxHeap(); nWJ:=JQ i"  
h.init(data); Tfx :"u  
for(int i=0;i h.remove(); 5f^>b\8+ |  
System.arraycopy(h.queue,1,data,0,data.length); JYm7@gx  
} gsPl _  
UXH"si:  
private static class MaxHeap{ DG[%Nhle  
O'$K],=BS  
void init(int[] data){ PB9/m-\H  
this.queue=new int[data.length+1]; uP@\#/4u  
for(int i=0;i queue[++size]=data; "NzD1k6.L  
fixUp(size); }$kQs!#  
} `uo, __y  
} _M t Qi  
tmJgm5v  
private int size=0; c|AtBgvf  
WKl+{e  
private int[] queue; TWd;EnNM  
g=l:cVr8y  
public int get() { u6Je@e_!  
return queue[1]; &(blN.2  
} bMKL1+y(  
+ G;LX'B  
public void remove() { >&S0#>wmyG  
SortUtil.swap(queue,1,size--); ~AZWds(,N  
fixDown(1); nfdq y)  
} ` ;)ZGY\  
file://fixdown o.7{O,v  
private void fixDown(int k) { {gsdG-  
int j; 0F:1\9f5  
while ((j = k << 1) <= size) { fuX'~$b.fA  
if (j < size %26amp;%26amp; queue[j] j++; bZ 443SG  
if (queue[k]>queue[j]) file://不用交换 T$+-IAE  
break; _&#S@aGw  
SortUtil.swap(queue,j,k); |Au]1}  
k = j; L}sx<=8.m  
} g{:<2xI5P  
} RJ4. kt  
private void fixUp(int k) { '+Xlw  
while (k > 1) { l=}~v  
int j = k >> 1; IQH[Q9%  
if (queue[j]>queue[k]) bb-qO#E  
break; g(ogXA1  
SortUtil.swap(queue,j,k); v [njdP  
k = j; e]Fp=*#  
} wJ+Aw  
} Ysi  g T  
-JT/ 9IQ  
} 'h1b1,b~  
T=Z.TG|lIx  
} XfYC7-e9c  
j&R+2%  
SortUtil: ArK]0$T   
I?Aj.{{$G%  
package org.rut.util.algorithm; )C%N]9FvY  
kA wNly  
import org.rut.util.algorithm.support.BubbleSort; sOU_j:A80;  
import org.rut.util.algorithm.support.HeapSort; [I;^^#'P  
import org.rut.util.algorithm.support.ImprovedMergeSort; 5W? v'"  
import org.rut.util.algorithm.support.ImprovedQuickSort; ,*I@  
import org.rut.util.algorithm.support.InsertSort; ++-{]wB3=.  
import org.rut.util.algorithm.support.MergeSort; EZDy+6b  
import org.rut.util.algorithm.support.QuickSort; S9| a$3K'  
import org.rut.util.algorithm.support.SelectionSort; LiQgR 6j  
import org.rut.util.algorithm.support.ShellSort; I5m][~6.?  
SHVWwoieT  
/** ;gg\;i}^  
* @author treeroot @A<PkpNL  
* @since 2006-2-2 ?sz)J 3  
* @version 1.0 dt}_D={Be  
*/ Zw1U@5}A  
public class SortUtil { ^P'{U26  
public final static int INSERT = 1; 'x"08v$  
public final static int BUBBLE = 2; !h[VUg_8  
public final static int SELECTION = 3; &opd2  
public final static int SHELL = 4; n(seNp%_  
public final static int QUICK = 5; c]-*P7W  
public final static int IMPROVED_QUICK = 6; rjx6Djo>  
public final static int MERGE = 7; a>O9pX  
public final static int IMPROVED_MERGE = 8; J%lgR  
public final static int HEAP = 9; )\uO9PB[O  
81LNkE,  
public static void sort(int[] data) { nC1zzFFJ  
sort(data, IMPROVED_QUICK); Y?J"wdWJNB  
} /4\wn?f  
private static String[] name={ 7R4z}2F2  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" mLV[uhq   
}; )0 W`  
aUHcYc\u  
private static Sort[] impl=new Sort[]{ b75 $?_+  
new InsertSort(), ?p<.Fv8.  
new BubbleSort(), uw(NG.4  
new SelectionSort(), &fa5laJb  
new ShellSort(), `o]g~AKX  
new QuickSort(), #|GSQJ$F)`  
new ImprovedQuickSort(), ?S$i?\Qh  
new MergeSort(), 39wa|:I  
new ImprovedMergeSort(), Vwk#qgnX  
new HeapSort() %UUH"  
}; 9^FziM  
uDw.|B2ui  
public static String toString(int algorithm){ yXI >I  
return name[algorithm-1]; 'H8(=9O1d  
} ",aT WQgN  
G;NF5`*4mc  
public static void sort(int[] data, int algorithm) { dovZ#D@Q  
impl[algorithm-1].sort(data); DGW+>\G  
} NA3 \  
osARA3\Xt  
public static interface Sort { tZ`Ts}\e  
public void sort(int[] data); c~QS9)=E  
} "tjLc6Xl^  
Wq*b~Lw  
public static void swap(int[] data, int i, int j) { D:^$4}h f  
int temp = data; WrPUd{QM  
data = data[j]; )^||\G  
data[j] = temp; zDhB{3-Q1{  
} <fCKUc  
} eW5SFY.  
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