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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。 $;un$ko6%  
插入排序: m1_?xU  
N_<sCRd]9  
package org.rut.util.algorithm.support; /H.QGPr  
\3K6NA!L  
import org.rut.util.algorithm.SortUtil; hT6:7 _UD  
/** ;ak3 @Uee  
* @author treeroot xVoWGz7  
* @since 2006-2-2 J#Fe"  
* @version 1.0 }]vj"!?a  
*/ }@yvw*c  
public class InsertSort implements SortUtil.Sort{ +C7 1".i-  
Hxr2Q]c?u  
/* (non-Javadoc) /R#-mY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }yqRz6=YB  
*/ J#*Uf>5NY  
public void sort(int[] data) { 7'FDI`e[  
int temp; X:-X3mV9{  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); z.1 6%@R  
} Bp\io$(%  
} C>cc!+n%H  
} R#~}ZUk2  
G B!3` A%&  
} Gb 61X6  
&Pxt6M\d  
冒泡排序: 'R*gSqx~  
/Nq!^=  
package org.rut.util.algorithm.support; ~J2-B2S!  
V5rnI\:7  
import org.rut.util.algorithm.SortUtil; ^7q=E@[e  
!mBsDn(J  
/** X[k-J\  
* @author treeroot $N;!. 5lX3  
* @since 2006-2-2 Lhl) pP17  
* @version 1.0 a#H=dIj  
*/ Ary$,3X2  
public class BubbleSort implements SortUtil.Sort{ oT 8  
Td[w<m+p<P  
/* (non-Javadoc) Ga f/0/|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0w\X  
*/ IZ')1  
public void sort(int[] data) { "b%hAdR  
int temp; 2a.NWJS  
for(int i=0;i for(int j=data.length-1;j>i;j--){ wlqV1.K  
if(data[j] SortUtil.swap(data,j,j-1); u#p1W|\4  
} M)Rp+uQ  
} ,2JqX>On>Y  
} ~m!>e])P?X  
} !N$4.slr<p  
=D5@PHpv(  
} 7qE V5!  
qNHS 1  
选择排序: w GZ(bKyO  
*" <tFQ  
package org.rut.util.algorithm.support; {N5g52MN  
7~\Dzcfk"P  
import org.rut.util.algorithm.SortUtil; NOyLZa'  
zq!2);,  
/** $Fz/&;KX!  
* @author treeroot ([|5(Omd\  
* @since 2006-2-2 VK`_ Qc#B  
* @version 1.0 W3UK[_qK  
*/ CW\o>yh  
public class SelectionSort implements SortUtil.Sort { /p\Ymq  
yD1*^~loJ  
/* 2DQ'h}BI  
* (non-Javadoc) u-UUF  
* ?^BsR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1@)]+* F*z  
*/ {DN c7G  
public void sort(int[] data) { SNvK8,"g  
int temp; *(?YgV  
for (int i = 0; i < data.length; i++) { O#O~A |  
int lowIndex = i; #a#~YSnG  
for (int j = data.length - 1; j > i; j--) { Aog 3d\1$  
if (data[j] < data[lowIndex]) { 0nx <f>n  
lowIndex = j; C,2IET  
} h83ho  
} 5[l3]HOO  
SortUtil.swap(data,i,lowIndex); 1+eC'&@Xjt  
} 9Z*`{  
} R5]R pW=G  
%h|z)  
} 6./&l9{h+  
EVO5+  
Shell排序: s^C*uP;R  
_?G\^^  
package org.rut.util.algorithm.support; D{N1.rSxv  
 pMt]wyKr  
import org.rut.util.algorithm.SortUtil; a]X6)6  
eBU\&z[  
/** .6O>P2m]a_  
* @author treeroot pvmm" f  
* @since 2006-2-2 yWzvE:!)  
* @version 1.0 83R"!w18  
*/ GsDSJz  
public class ShellSort implements SortUtil.Sort{ QQ2xNNF[  
Dj!J 4uD  
/* (non-Javadoc) YY7:WQS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !&Q,]\j  
*/ 2gt08\  
public void sort(int[] data) { *<9D]  
for(int i=data.length/2;i>2;i/=2){ 1MB  
for(int j=0;j insertSort(data,j,i); Fi5,y;]R  
} SF_kap%JM  
} gFDP:I/`  
insertSort(data,0,1); u85y;AE,(  
} A1Q]KS@  
2#+@bk>^{  
/** NmB0CbB  
* @param data fiw~"2U  
* @param j Eq.c;3  
* @param i Tr@`ozp8  
*/ ? 5B}ZMW  
private void insertSort(int[] data, int start, int inc) { AO']Kmm  
int temp; 5yA^n6  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); #{h4lte  
} EiJSLL  
} !]kn=7  
} +e ?ixvld  
VKN^gz  
} K03a@:  
<S\S @3  
快速排序: Q;5\( 0w5  
$oxPmELtpe  
package org.rut.util.algorithm.support; W:5m8aE\  
3N]pN<3@  
import org.rut.util.algorithm.SortUtil; _&F6As !{  
WO)K*c1F  
/** gVG :z_6  
* @author treeroot "r"Y9KODm  
* @since 2006-2-2 ^kt"n( P5  
* @version 1.0 R o-Mex2  
*/ .f jM9G#  
public class QuickSort implements SortUtil.Sort{ a 3O_8GU  
K] Eq"3  
/* (non-Javadoc) sS-5W-&P{T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tkuN$Jl  
*/ iicrRGp3  
public void sort(int[] data) { \!SC;  
quickSort(data,0,data.length-1); (9cIU2e  
} qbP[  9  
private void quickSort(int[] data,int i,int j){ vxqMo9T  
int pivotIndex=(i+j)/2; Szg<;._J  
file://swap #Jm_~k  
SortUtil.swap(data,pivotIndex,j); k*-+@U"+  
Hfc^<q4a.  
int k=partition(data,i-1,j,data[j]); {Or|] 0  
SortUtil.swap(data,k,j); ,/d-o;W  
if((k-i)>1) quickSort(data,i,k-1); KO5Q;H  
if((j-k)>1) quickSort(data,k+1,j); ;^rZ"2U l  
&rNXn?>b  
} 5mFi)0={y  
/** :_e.ch:4  
* @param data ax 3:rl  
* @param i Q]|+Y0y}X  
* @param j .qVdo+M%F  
* @return VWMCbg>R  
*/ LZoth+:  
private int partition(int[] data, int l, int r,int pivot) { x%(!+  
do{ ikxSWO_Y=  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); hG ]jm  
SortUtil.swap(data,l,r); |Pj _L`G  
} \DQ;v  
while(l SortUtil.swap(data,l,r); Jx{,x-I  
return l; X,OxvmDm  
} _X]?  
|/<iydP  
} m.^6e f  
@C!q S7k)  
改进后的快速排序: ED$gnFa3I  
gf3/kll9  
package org.rut.util.algorithm.support; 8wy"m=>=b}  
]7VK&YfN  
import org.rut.util.algorithm.SortUtil; /S;?M\  
}Ns_RS$  
/** db4&?55Q  
* @author treeroot P0z "Eq0S  
* @since 2006-2-2 b uhxC5i%  
* @version 1.0 ]Ny]Ox<  
*/ I 9u=RI s  
public class ImprovedQuickSort implements SortUtil.Sort { Jz|(B_U  
xv%}xeE V  
private static int MAX_STACK_SIZE=4096; RV($G8U  
private static int THRESHOLD=10; #15q`w  
/* (non-Javadoc) ;J5oO$H+68  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H~$|y9>qI  
*/ ~]yqJYiid^  
public void sort(int[] data) { my} P\r.  
int[] stack=new int[MAX_STACK_SIZE]; L`Ic0}|lzy  
Z7f~|}  
int top=-1; d@l;dos),  
int pivot; ?_^9e  
int pivotIndex,l,r; % idnm  
@ =,J6  
stack[++top]=0; $"UAJ-  
stack[++top]=data.length-1; H{}6`;W  
]':C~-RV{  
while(top>0){ (%r:PcGMEV  
int j=stack[top--]; u3<])}I'  
int i=stack[top--]; Z6*RIdD>  
utTek5/  
pivotIndex=(i+j)/2; Q3KBG8  
pivot=data[pivotIndex]; stDn{x .  
::5-UxGL<2  
SortUtil.swap(data,pivotIndex,j); P#0 _  
V*TG%V -  
file://partition b,@:eVQ7  
l=i-1; 2`},;i~[  
r=j; bc"{ZL!C  
do{ zH_q6@4  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); "ulaF+  
SortUtil.swap(data,l,r); JBYQ7SsAS0  
} h!Q >h7  
while(l SortUtil.swap(data,l,r); _AO0:&  
SortUtil.swap(data,l,j); lu{}j4  
:#LB}=HQ  
if((l-i)>THRESHOLD){ dHu]wog  
stack[++top]=i; !uZ+r%  
stack[++top]=l-1; ]MHQ "E?  
} &B.r&K&  
if((j-l)>THRESHOLD){ dn5v|[dJ  
stack[++top]=l+1; q{@Wn]!k  
stack[++top]=j; q3[LnmH  
} UkYQ<MNO  
i3~!ofTb  
} iIT<{m&`  
file://new InsertSort().sort(data); e Jwr  
insertSort(data); PQ[TTLG\&  
} K4rr.f6  
/** t.zSJ|T_&O  
* @param data z6!X+`&  
*/ 'l}3Iua6qk  
private void insertSort(int[] data) { vIREvj#U  
int temp; m=K XMX  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ^w HMKC  
} .SsIU\[)  
} f^]AyU;F:  
} 55I>v3 w  
lt*k(JD  
} gPf aiVY  
:Hd<S   
归并排序: m<yA] ';s  
J8%|Gd0#4  
package org.rut.util.algorithm.support; IQ_0[  
Cjh&$aq  
import org.rut.util.algorithm.SortUtil; Q?>#sN,  
wiVQMgi`  
/** ?1{`~)"  
* @author treeroot @U)'UrNr~  
* @since 2006-2-2 6M6QMg^  
* @version 1.0 ,'9tR&S$_  
*/ a_ P[J8j  
public class MergeSort implements SortUtil.Sort{ ! $iR:ji  
Cb13Qz  
/* (non-Javadoc) DYl^6 ]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dbLX}>  
*/ 3UaP7p+d  
public void sort(int[] data) { j\vK`.z  
int[] temp=new int[data.length]; daorKW4  
mergeSort(data,temp,0,data.length-1); =.%ZF]Oe+#  
} 1t0F J@)*  
EK'&S=]  
private void mergeSort(int[] data,int[] temp,int l,int r){ `~RV  
int mid=(l+r)/2; wx!*fy4hL  
if(l==r) return ; V ;6M[ic}  
mergeSort(data,temp,l,mid); ~L1O\V i  
mergeSort(data,temp,mid+1,r); <H p"ZCN  
for(int i=l;i<=r;i++){ fH.W kAE1  
temp=data; miKi$jC}vq  
} AWi87q  
int i1=l; R',w~1RV'  
int i2=mid+1; zbR.Lb  
for(int cur=l;cur<=r;cur++){ d3$<|mG$  
if(i1==mid+1) Lr^xp,_n  
data[cur]=temp[i2++]; g IKm  
else if(i2>r) w?*KO?K  
data[cur]=temp[i1++]; PYUY bRn  
else if(temp[i1] data[cur]=temp[i1++]; DG-vTr  
else GKSy|z  
data[cur]=temp[i2++]; qh'BrYu*  
} JA}'d7yEa  
} ? 1{S_  
jysV%q 3  
} Dmi;# WY  
;Y '\:  
改进后的归并排序: </Id';|v  
n96gDH*  
package org.rut.util.algorithm.support; Fs|;>Up0  
e^GW[lT  
import org.rut.util.algorithm.SortUtil; {|gJC>f@  
9H}&Ri%  
/** Z)A+ wM  
* @author treeroot d{hYT\7~1(  
* @since 2006-2-2 G"[pr%?  
* @version 1.0 6'ZnyWb  
*/ J9FNjM[qe  
public class ImprovedMergeSort implements SortUtil.Sort { _pGviGR  
."X~?Nk  
private static final int THRESHOLD = 10; Yel(}Ny  
hn|E<  
/* eh>E).  
* (non-Javadoc) UT~2}B9fc  
* E, fp=.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nc~d*K\!  
*/ @,&m`qzd+  
public void sort(int[] data) { @>@Nu g2   
int[] temp=new int[data.length]; QL2y,?Mz7  
mergeSort(data,temp,0,data.length-1); 3R*@m  
} X-,y[ )  
55LF  
private void mergeSort(int[] data, int[] temp, int l, int r) { \,!q[nC  
int i, j, k; f ti|3c  
int mid = (l + r) / 2; I 6YT|R  
if (l == r) Bqi2n'^O2  
return; *`-29eR"8  
if ((mid - l) >= THRESHOLD) zjS:;!8em  
mergeSort(data, temp, l, mid); F\R}no5C  
else cOZ^huK  
insertSort(data, l, mid - l + 1); }hitU(5t0  
if ((r - mid) > THRESHOLD) :"^< aLj  
mergeSort(data, temp, mid + 1, r); PL$F;d  
else .K1E1Z_  
insertSort(data, mid + 1, r - mid); BDRVT Y(s  
k#5e:VOb  
for (i = l; i <= mid; i++) { a.IF%hP0xo  
temp = data; Y^Q|l%Qrb  
} ?1:/ 6  
for (j = 1; j <= r - mid; j++) { SQU%N  
temp[r - j + 1] = data[j + mid]; ]~Vu-@ /}  
} #ljg2:I+  
int a = temp[l]; 9:i,WJO  
int b = temp[r]; (y=o]Vy  
for (i = l, j = r, k = l; k <= r; k++) { FTnQqDuT  
if (a < b) { [0ffOTy  
data[k] = temp[i++]; Ju7C?)x  
a = temp; idS RWa  
} else { QeJ.o.m{  
data[k] = temp[j--]; _ 1> 4Q%  
b = temp[j]; }!]x|zU.=  
} Yb3f]4EH  
} p}DF$k%`  
} xO-U]%oq  
+7< >x-+  
/** ]MLLr'6?  
* @param data NND=Z xl  
* @param l !K3cf]2UD  
* @param i (E}cA&{  
*/ *.]E+MYi*  
private void insertSort(int[] data, int start, int len) { :2)1vQH0L  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 6a?$=y  
} `ab\i`g9  
} Y0yO `W4  
} 5%+bWI{w  
} pb6^sA%l  
`vxrC&,As  
堆排序: kqvJ&7  
P"uHtHK  
package org.rut.util.algorithm.support; 8H#c4%by)  
j$8|ym^OX  
import org.rut.util.algorithm.SortUtil; hAr[atu87  
!8@rK$DB  
/** <S8W~ wC  
* @author treeroot o+_/)c  
* @since 2006-2-2 Ipz 1+ #s'  
* @version 1.0 Eh@T W%9*  
*/ k\c &2T]W  
public class HeapSort implements SortUtil.Sort{ +#uNQ`1v  
)*K<;WI WH  
/* (non-Javadoc) *Iwk47J ;a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RD$tc~@UB  
*/ >@^yj+k  
public void sort(int[] data) { "-Q Rkif  
MaxHeap h=new MaxHeap(); uz#PBV8Q  
h.init(data); hHc^ZA  
for(int i=0;i h.remove(); RQpIBsj  
System.arraycopy(h.queue,1,data,0,data.length); 2WPF{y%/  
} i$JG^6,O  
a][pTC\rb  
private static class MaxHeap{ W-!Bl&jF[  
;*-@OLT_K  
void init(int[] data){ 45)ogg2  
this.queue=new int[data.length+1]; Ku/H=  
for(int i=0;i queue[++size]=data; : \:~y9X0  
fixUp(size); Wz-3?EQ  
} s"=F^#  
} B221}t  
|)?aH2IL  
private int size=0; K Z!N{.Jk  
1t[;`iZ  
private int[] queue; fATA%eA8;  
H6ky)kF&  
public int get() { HZDaV&)@  
return queue[1]; YQ @dl  
} \)otu\3/  
uRm_  
public void remove() { >'ksXA4b  
SortUtil.swap(queue,1,size--); Wj4^W<IO  
fixDown(1); !2Xr~u7a  
} ;<kZfx  
file://fixdown A3MZxu=':3  
private void fixDown(int k) { NF/Ti5y  
int j; rwL=R,  
while ((j = k << 1) <= size) { %jZp9}h  
if (j < size %26amp;%26amp; queue[j] j++; v LBee>$  
if (queue[k]>queue[j]) file://不用交换 <84C tv  
break; 5y%un  
SortUtil.swap(queue,j,k); {b|3]_-/  
k = j; yE.495  
} )l#%.Z9  
}  :Hzz{'  
private void fixUp(int k) { (:?5 i`  
while (k > 1) { t+3   
int j = k >> 1; nIyROhZ  
if (queue[j]>queue[k]) lrs0^@.+  
break; ;]gsJ9FK<  
SortUtil.swap(queue,j,k); :F^$"~(,  
k = j; ~KAp\!,  
} Y ]~ HAv '  
} ]27>a"p59Y  
@ ],6SKbG6  
} :BL'>V   
I|KY+k> /  
} 8h&oSOkQk,  
h v$uH7Fz  
SortUtil: fiE>H~  
G2CZwm{/f  
package org.rut.util.algorithm; ka5#<J7<p  
}uF[Ra  
import org.rut.util.algorithm.support.BubbleSort; ?W[J[cb  
import org.rut.util.algorithm.support.HeapSort; Qp kKVLi  
import org.rut.util.algorithm.support.ImprovedMergeSort; y+4?U  
import org.rut.util.algorithm.support.ImprovedQuickSort; }BI~am_  
import org.rut.util.algorithm.support.InsertSort; ,DQGv_  
import org.rut.util.algorithm.support.MergeSort; L$Hx?^3  
import org.rut.util.algorithm.support.QuickSort; z(g%ue\  
import org.rut.util.algorithm.support.SelectionSort; ? G$Om  
import org.rut.util.algorithm.support.ShellSort; SY%A"bC  
cBz!U 8(  
/** ZnvEv;P  
* @author treeroot V!T^wh;  
* @since 2006-2-2 '}jf#C1$c  
* @version 1.0 BIxV|\k  
*/ h8f!<:rTS  
public class SortUtil { '1W!xQ}E  
public final static int INSERT = 1; IajD;V  
public final static int BUBBLE = 2; (KT38RhA  
public final static int SELECTION = 3; 1MbY7!?PG  
public final static int SHELL = 4; <i\UMrD]`:  
public final static int QUICK = 5; ?^%YRB&  
public final static int IMPROVED_QUICK = 6; k $e D(cW$  
public final static int MERGE = 7; ?,ZELpg n  
public final static int IMPROVED_MERGE = 8; V";mWws+?#  
public final static int HEAP = 9; dT5J-70Fl  
{ 1+Cw?1d  
public static void sort(int[] data) { z.eJEK  
sort(data, IMPROVED_QUICK); ]b4pI*:$I  
} Ik`O.Q.}  
private static String[] name={ F(Lb8\to\M  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 5;IT64&]  
}; _PK}rr?"7O  
$Y8>_6%+T  
private static Sort[] impl=new Sort[]{ /xl4ohL$a  
new InsertSort(), .)LZ`Ge3F  
new BubbleSort(), 9{_8cpm4  
new SelectionSort(), b;S6'7Jf9  
new ShellSort(), N]B)Fb  
new QuickSort(), VZ\O9lD  
new ImprovedQuickSort(), ^oS$>6|  
new MergeSort(), uQH%.A  
new ImprovedMergeSort(), }x*7l`1  
new HeapSort() Ct4LkmD  
}; WMW1B }Z3  
J'o DOn.M  
public static String toString(int algorithm){ 8';m)Jc  
return name[algorithm-1]; fv|]= e  
} QB!jLlg(  
CPVzX%=  
public static void sort(int[] data, int algorithm) { ZU=,f'bU  
impl[algorithm-1].sort(data); r eGm>  
} ^'m\D;  
*6:v}#b[  
public static interface Sort { ^#]c0  
public void sort(int[] data); ?nQ_w0j  
} _b>F#nD,'%  
):e+dt  
public static void swap(int[] data, int i, int j) { J!rY 6[ t  
int temp = data; ?#d6i$  
data = data[j]; \I?w)CE@R  
data[j] = temp; 9lKn% |=T  
} >xT^RYS  
} }$l8d/_$[  
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