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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。 w3jcit|  
插入排序: l09DH+  
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package org.rut.util.algorithm.support; }Apn.DYbbf  
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import org.rut.util.algorithm.SortUtil; r=S,/N(1  
/** g)nT]+&  
* @author treeroot 3c[]P2Bh  
* @since 2006-2-2 ,D2nUk  
* @version 1.0 +lZvj=gW  
*/ b)7v-1N  
public class InsertSort implements SortUtil.Sort{ (W5JVk_o  
eu0j jeB  
/* (non-Javadoc) MY l9 &8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  mT,#"k8  
*/ t(p}0}Pp  
public void sort(int[] data) { GuKiNYI_  
int temp; `NCH^)  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); J }|6m9k!  
} =H8Y  
} R<;;Ph  
} l`."rei%)  
LL+PAvMg  
} UeU`U  
f47dB_{5f.  
冒泡排序: Ch73=V  
g9gi7.'0  
package org.rut.util.algorithm.support; ,M=s3D8C  
^wz 2e  
import org.rut.util.algorithm.SortUtil; q``:[Sz  
*+_+Z DU  
/** hkx(r5o  
* @author treeroot ._TN;tR~'  
* @since 2006-2-2 L u1pxL  
* @version 1.0 W{fNZb'  
*/ 5=/j  
public class BubbleSort implements SortUtil.Sort{ i9D<jkc  
6mV^a kapv  
/* (non-Javadoc) U&0 RQ:B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fPq)Lx1'  
*/ T l8`3`e  
public void sort(int[] data) { Pxf/*z  
int temp; Suy +XHV  
for(int i=0;i for(int j=data.length-1;j>i;j--){ RKy!=#;17  
if(data[j] SortUtil.swap(data,j,j-1); LvNulMEK  
} 75;g|+  
} 7KN+ @6!x  
} mX[J15  
} ;),vUu,k  
GQDW}b8  
} 5A+r^xN  
d fSj= 4  
选择排序: ;Q0H7)t:  
OJD!Ar8Q  
package org.rut.util.algorithm.support; fT{%zJU  
a(lmm@;V<  
import org.rut.util.algorithm.SortUtil; 3L9@ELY4  
/6:qmh2  
/** p{AX"|QM"  
* @author treeroot e'r-o~1eN  
* @since 2006-2-2 !vq|*8  
* @version 1.0 #]r'?GN  
*/ p\DSFB  
public class SelectionSort implements SortUtil.Sort { D+y?KihE  
<[?ZpG  
/* f([d/  
* (non-Javadoc) vF)eo"_s*  
* Qcn;:6_&W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,,]<f*N  
*/ |IDZMd0  
public void sort(int[] data) { r! ~6.  
int temp; L| ;WE=  
for (int i = 0; i < data.length; i++) { otlv ;3263  
int lowIndex = i; eU\XAN#@  
for (int j = data.length - 1; j > i; j--) { *z&hXYm  
if (data[j] < data[lowIndex]) { {RI)I  
lowIndex = j; .mplML0oW  
} m]Mm (7v(  
} "-S@R=bi  
SortUtil.swap(data,i,lowIndex); >65\  
} ^O,r8K{1n  
} 9# #(B  
&Qq|  
} U#|6n ,  
ZqX p f  
Shell排序: u}89v1._Jn  
b-RuUfUn0  
package org.rut.util.algorithm.support; I8Y #l'z  
0+/ew8~$  
import org.rut.util.algorithm.SortUtil; a}X. ewg  
I.it4~]H  
/** %Z*N /nU  
* @author treeroot rTqGtmulG  
* @since 2006-2-2 z fu)X!t^  
* @version 1.0 73JrK_h  
*/ b4 Pa5 w  
public class ShellSort implements SortUtil.Sort{ 85lcd4&~  
biENRJQ.  
/* (non-Javadoc) C8D`:k  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SGu`vN]  
*/ .-)kIFMi  
public void sort(int[] data) { iXL?ic  
for(int i=data.length/2;i>2;i/=2){ nO#x "  
for(int j=0;j insertSort(data,j,i); e-#V s{?|r  
} /@&#U bN\  
} `><E J'h  
insertSort(data,0,1); &0]5zQ  
} Kl<NAv%j  
)KOIf{  
/** }i J$&CJ  
* @param data nd&i9l  
* @param j !|8"}ZF  
* @param i &@=W+A=c~  
*/ l#Vg=zrT  
private void insertSort(int[] data, int start, int inc) { D 9UM8Hxi  
int temp; V>D}z8w7  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ,&L}^Up  
} y9.?5#aL  
} ja6V*CWb  
} %M:$ML6b<  
fk!9` p'  
} sG\K$GP!  
]E6r )C  
快速排序: x"r,l/gzy  
=}YX I  
package org.rut.util.algorithm.support; wNU;gz  
j4u ["O3  
import org.rut.util.algorithm.SortUtil; M3r;Pdj2r  
VOIni<9y  
/** e^;%w#tEqI  
* @author treeroot P3nBxw"  
* @since 2006-2-2 rA E5.Q!u  
* @version 1.0 TFAR>8Nm  
*/ VfozqUf  
public class QuickSort implements SortUtil.Sort{ Wb[k2V  
("{"8   
/* (non-Javadoc) }Rw6+;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X4{<{D`0t8  
*/ "Q{ l])N  
public void sort(int[] data) { | AiMx2  
quickSort(data,0,data.length-1); EWr7eH  
}  0T^ 0)c  
private void quickSort(int[] data,int i,int j){ nLCaik_,m  
int pivotIndex=(i+j)/2; )j\_*SoH  
file://swap R:j mn  
SortUtil.swap(data,pivotIndex,j); )sNPWn8<Uy  
=3!o _  
int k=partition(data,i-1,j,data[j]); ".2d{B  
SortUtil.swap(data,k,j); 7O:g;UI#  
if((k-i)>1) quickSort(data,i,k-1); N,l"9>CF  
if((j-k)>1) quickSort(data,k+1,j); SlwQ_F"4L  
JW )f'r_f  
} 4c[/%e:\-  
/** Y6Ux*vhK  
* @param data (4Nj3x o  
* @param i {e q378d  
* @param j CD%Cb53  
* @return XMdCQ=  
*/ [A~ Hl  
private int partition(int[] data, int l, int r,int pivot) { dMCoN8W  
do{ 6P:fM Y  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 0a bQY  
SortUtil.swap(data,l,r); BMdZd5!p&  
} w)B ?j  
while(l SortUtil.swap(data,l,r); @_7rd  
return l; Hp>L}5 y[  
} WA0D#yuJ/  
1vxQ`)a  
} Gp+\}<^ Z  
'.M4yif \g  
改进后的快速排序: b`@C#qB  
&FuL {YL  
package org.rut.util.algorithm.support; EB*C;ms  
&AWrM{e  
import org.rut.util.algorithm.SortUtil; }2iR=$2  
H5 V>d  
/** e<*qaUI  
* @author treeroot F-oe49p5e  
* @since 2006-2-2 ?5/7 @V  
* @version 1.0 iJZNSRQJ}r  
*/ Cs y,3XG  
public class ImprovedQuickSort implements SortUtil.Sort { ;8dffsyq  
;Rpib[m  
private static int MAX_STACK_SIZE=4096; 3W]gn8  
private static int THRESHOLD=10; f*xr0l  
/* (non-Javadoc) :0QDV~bs  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T\g+w\N  
*/ 'nBP%  
public void sort(int[] data) { 3u&,3:  
int[] stack=new int[MAX_STACK_SIZE]; GC'e  
ir"t@"Y;o  
int top=-1; vhAgX0k  
int pivot; a2tEp+7?  
int pivotIndex,l,r; &0tW{-Hv"  
aKWxLe  
stack[++top]=0; ^g5E&0a`g  
stack[++top]=data.length-1; 0zkMRBe  
{u2Zl7]z^  
while(top>0){ EmR82^_:  
int j=stack[top--]; d~QM@<SV  
int i=stack[top--]; w;j<$<4=7  
>TY;l3ew  
pivotIndex=(i+j)/2; _U-`/r o  
pivot=data[pivotIndex]; 9} m?E<6&  
GBT|1c'i  
SortUtil.swap(data,pivotIndex,j); GqR|hg  
sZT~ 5c8  
file://partition p6K~b  
l=i-1; ?|+e*{4k  
r=j; K@{0]6  
do{ $#p5BQQ|  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); nc\`y,>l8  
SortUtil.swap(data,l,r); q?dd5JzZy,  
} 8'jt59/f  
while(l SortUtil.swap(data,l,r); ENIg_s4  
SortUtil.swap(data,l,j); 2l+L96  
d}':7Np  
if((l-i)>THRESHOLD){ nq8XVT.m^\  
stack[++top]=i; ()bQmNqmO=  
stack[++top]=l-1; 2#sFY/@  
} [DH4iG5  
if((j-l)>THRESHOLD){ pGjwI3_K  
stack[++top]=l+1; , ?U)mYhI  
stack[++top]=j; 6]~/`6Dub  
} \Ta5c31S+  
8FMxn{k2  
} EJ#I7_  
file://new InsertSort().sort(data); jH!;}q  
insertSort(data); KFwuz()7  
} yxHo0U  
/** rDhQ3iCqo  
* @param data ?]$<Ufr  
*/ eZqEFMBTm  
private void insertSort(int[] data) { ZY]$MZf5yo  
int temp; _,)_(R ,h  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); E+qLj|IU  
} lZL+j6Q  
} +pwTM]bV  
} " nCK%w=  
fmj}NV&ma  
} n qO*z<  
G)%V 3h  
归并排序: $wp>2  
)9_W"'V  
package org.rut.util.algorithm.support; ;!A8A4~nu  
Z@Zg3AVU  
import org.rut.util.algorithm.SortUtil; "aF2:E'  
F |BY]{  
/** Q=Mv"~2>B  
* @author treeroot `G1"&q,i  
* @since 2006-2-2 ^tGAJ_b 79  
* @version 1.0 o>C,Db~L/  
*/ L6PgWc;m  
public class MergeSort implements SortUtil.Sort{ m~AAO{\:b  
oI/_WY[t  
/* (non-Javadoc) ][jwy-Uy;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;_c&J&I  
*/   8sG?|u  
public void sort(int[] data) { [0y,K{8t  
int[] temp=new int[data.length]; 5z,q~CU  
mergeSort(data,temp,0,data.length-1); or3OLBf*Q  
} hmo4H3g!N  
L%/>Le}VX  
private void mergeSort(int[] data,int[] temp,int l,int r){ cB){b'WJ  
int mid=(l+r)/2; tjwf;g}$  
if(l==r) return ; |ugdl|f  
mergeSort(data,temp,l,mid); SyVXXk 0  
mergeSort(data,temp,mid+1,r); Ie/_gz^  
for(int i=l;i<=r;i++){ gfj_]  
temp=data; (m:Q'4Ep  
} ) hs&?: )  
int i1=l; \tYImh  
int i2=mid+1; JCn HEH  
for(int cur=l;cur<=r;cur++){ O}zHkcL  
if(i1==mid+1) npltsK):  
data[cur]=temp[i2++]; 4 H0rS'5d  
else if(i2>r) YiO}"  
data[cur]=temp[i1++]; UTh2? Rh/  
else if(temp[i1] data[cur]=temp[i1++]; 2PyuM=(Wt  
else s_/@`kd{  
data[cur]=temp[i2++]; v77UE"4|c  
} klnNBo!  
}  94PI  
dxAGO(  
} v)_c*+6u  
.O1w-,=  
改进后的归并排序: nMzt_IlI  
5@%Gq)z5  
package org.rut.util.algorithm.support; \ YF@r7  
Zt! $"N.,  
import org.rut.util.algorithm.SortUtil; 1[O cZ CS  
Z,2?TT|p  
/** \#]%S/_ A  
* @author treeroot 'RKpMdoz  
* @since 2006-2-2 ,]wQ]fpt  
* @version 1.0 >8I~i:hn  
*/ 3]?='Qq.(  
public class ImprovedMergeSort implements SortUtil.Sort { G<-KwGy,D  
4AJT)I.  
private static final int THRESHOLD = 10; %<nGm\  
8iaMr278W  
/* &?bsBqpN  
* (non-Javadoc) ~/K&=xE  
* NzyEsZ]$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "=s}xAM|A  
*/ |Jd8ul:&e  
public void sort(int[] data) { Y+Z+Y)K  
int[] temp=new int[data.length]; tq h)yr;  
mergeSort(data,temp,0,data.length-1); ,\"x#Cc f  
} V[kJ;YLPN  
BedL `[ ,  
private void mergeSort(int[] data, int[] temp, int l, int r) { |e@1@q(a[]  
int i, j, k; Q2ne]MI  
int mid = (l + r) / 2; L;")C,CwQ  
if (l == r) \-]Jm[]^  
return; GBb8 }lx  
if ((mid - l) >= THRESHOLD) I\6C0x  
mergeSort(data, temp, l, mid); %/w-.?bX  
else eC"e v5v  
insertSort(data, l, mid - l + 1); O713'i  
if ((r - mid) > THRESHOLD) /} PdO  
mergeSort(data, temp, mid + 1, r); m}?jU  
else #Y7iJPO  
insertSort(data, mid + 1, r - mid); ];Noe9o  
YT!iI   
for (i = l; i <= mid; i++) { @-S7)h>~  
temp = data; :2c(.-[`  
} 6/L[`n"G  
for (j = 1; j <= r - mid; j++) { _VdJFjY?zc  
temp[r - j + 1] = data[j + mid]; Z72%Bv  
} n$SL"iezW?  
int a = temp[l]; bS8$[7OhX  
int b = temp[r]; 7=fN vES2  
for (i = l, j = r, k = l; k <= r; k++) { xI?'Nh  
if (a < b) { 9?ll(5E  
data[k] = temp[i++]; A]0R?N9wb_  
a = temp; H4 O"^#5  
} else { v1yB   
data[k] = temp[j--]; [C4{C4TX  
b = temp[j]; q[qX O5  
} 8BAe6-*S8  
} s-Gd{=%/q  
} 6/wC StZ  
oe^JDb#  
/** n Yx[9HN  
* @param data `Z>=5:+G@2  
* @param l #pAN   
* @param i 81|[Y'f  
*/ &&<l}E  
private void insertSort(int[] data, int start, int len) { Szu @{lpP@  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 8v4krz<Iq  
} igTs[q=Ak  
} K{I"2c  
} 5Xxdm-0  
} Gq1C"s$4'  
<ndY6n3  
堆排序: J)Yz@0#T(;  
Hfj.8$   
package org.rut.util.algorithm.support; nt>3i! l  
/!Ag/SmS!9  
import org.rut.util.algorithm.SortUtil; y{(Dv}   
j07A>G-=  
/** Cd^1E]O0{  
* @author treeroot !U4YA1>>  
* @since 2006-2-2 g/$RuT2U  
* @version 1.0 <bW~!lv  
*/ \bF<f02P  
public class HeapSort implements SortUtil.Sort{ R$u1\r1I  
F7C+uG Ts  
/* (non-Javadoc) 4Hf'/%kW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XLiwE$:t%  
*/ ~5|R`%  
public void sort(int[] data) { l=P)$O|=w  
MaxHeap h=new MaxHeap(); s~(`~Y4  
h.init(data); )Az0.}  
for(int i=0;i h.remove(); b (@GKH"W  
System.arraycopy(h.queue,1,data,0,data.length); Es}`S Ie/  
} ^2BiMH3j  
E]vox~xK>  
private static class MaxHeap{ S3HyB b  
vD#kH 1  
void init(int[] data){ voRb>xF  
this.queue=new int[data.length+1]; g51UIN]o-  
for(int i=0;i queue[++size]=data; Zp{K_ec{  
fixUp(size); B)DuikV.D  
} jpYZ) So-  
} % mPv1$FH  
,\+N}F^  
private int size=0; PQ_A^95  
AwuhF PG  
private int[] queue; w#BT/6W&G  
@`B_Q v@  
public int get() { S/eplz;  
return queue[1]; -0`n(`2  
} er BerbEEH  
{ **W7\h  
public void remove() { *@@dO_%6  
SortUtil.swap(queue,1,size--); "-:g.x*d  
fixDown(1); j)ln"u0R^B  
} "tJ[M  
file://fixdown vY4}vHH2  
private void fixDown(int k) { WyB^b-QmDh  
int j; 73u97oe>1  
while ((j = k << 1) <= size) { mcQ A'  
if (j < size %26amp;%26amp; queue[j] j++; pR2U&OA  
if (queue[k]>queue[j]) file://不用交换 wLI1qoDM  
break; %'. x vC  
SortUtil.swap(queue,j,k); NuF?:L[  
k = j; 7nxH>.,Q>  
} -e"kJd&V  
} xp^Jp  
private void fixUp(int k) { GHi'ek<?^  
while (k > 1) { @+Nf@LJ  
int j = k >> 1; fY =:geB  
if (queue[j]>queue[k]) h c]p^/H  
break; T_wh)B4xW  
SortUtil.swap(queue,j,k); #Ddo` >`&  
k = j; /Trbr]lWy  
} 7&jq  =  
} 3TV4|&W;  
D\J.6W  
} x<w-j[{k_K  
6e.l# c!1}  
} 7z\ #"~(.  
h{\S'8  
SortUtil: hfc~HKLC  
=?]S8cth  
package org.rut.util.algorithm; ][//G|9  
;2 ?fz@KZ  
import org.rut.util.algorithm.support.BubbleSort; XCyb[(4  
import org.rut.util.algorithm.support.HeapSort; m#_M"B.cm  
import org.rut.util.algorithm.support.ImprovedMergeSort; L"c.15\  
import org.rut.util.algorithm.support.ImprovedQuickSort; e^;:iJS  
import org.rut.util.algorithm.support.InsertSort; b ettOg  
import org.rut.util.algorithm.support.MergeSort; 1jBIi  
import org.rut.util.algorithm.support.QuickSort; Xyz/CZPi  
import org.rut.util.algorithm.support.SelectionSort; Zv mkb%8  
import org.rut.util.algorithm.support.ShellSort; ;5T}@4m|r  
yP` K [/  
/** rkdA4'66w  
* @author treeroot M djxTr^  
* @since 2006-2-2 N<KsQsy=  
* @version 1.0 `|92!Ej  
*/ ;1_3E2E$  
public class SortUtil { &Wdi 5T8  
public final static int INSERT = 1; !"E/6z2&(k  
public final static int BUBBLE = 2; 9G7Brs:  
public final static int SELECTION = 3; Bz%wV-  
public final static int SHELL = 4; Wi\k&V.mE  
public final static int QUICK = 5; \fvm6$ rZ^  
public final static int IMPROVED_QUICK = 6; ^rY18?XC+:  
public final static int MERGE = 7; ,j(E>g3  
public final static int IMPROVED_MERGE = 8; ]w4?OK(j  
public final static int HEAP = 9; ^,f^YL;  
ESFJN}Q%0.  
public static void sort(int[] data) { v/vPU  
sort(data, IMPROVED_QUICK); F]<2nb7  
} 96; gzG@1!  
private static String[] name={ IQd~` G  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Tgla_sMb  
}; b8%TwYp  
{od@S l  
private static Sort[] impl=new Sort[]{ QWt3KW8)  
new InsertSort(), Azr|cKu]  
new BubbleSort(), d}|z+D  
new SelectionSort(), T>hm\!  
new ShellSort(), QaA?UzB  
new QuickSort(), 5xj8^W^G9  
new ImprovedQuickSort(), "So "oT1  
new MergeSort(), (?GW/pLK]  
new ImprovedMergeSort(), 1BP/,d |+  
new HeapSort() sS4V(:3s  
}; t -}IKrbv  
![I|hB  
public static String toString(int algorithm){ Dwr"-  
return name[algorithm-1]; f+)LVT8p  
} a>d`g  
/m^G 99N  
public static void sort(int[] data, int algorithm) { yVKl%GO  
impl[algorithm-1].sort(data); GlC(uhCpV  
} *L Y6hph"  
OOABn*  
public static interface Sort { Fs=)*6}&  
public void sort(int[] data); X68.*VHh0  
} Ty7 `&  
FKhgUnw  
public static void swap(int[] data, int i, int j) { @FF{lK?[  
int temp = data; ofI,[z3  
data = data[j]; sint":1FC  
data[j] = temp; JFNjc:4{0  
} !HhF*Rlr  
} s%~Nx3,  
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