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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。 :mppv8bh  
插入排序: )u%je~Vw  
8IQtz2  
package org.rut.util.algorithm.support; A7_4 .VH  
9A'Y4Kg<C  
import org.rut.util.algorithm.SortUtil; ?%tMohL  
/** 2B0W~x2=  
* @author treeroot /phX'xp  
* @since 2006-2-2 -Apc$0ZsN  
* @version 1.0 }L=/A7Nk>  
*/ {7hLsK[])  
public class InsertSort implements SortUtil.Sort{ sic"pn],U  
OR1DYHHT/1  
/* (non-Javadoc) y&~w2{a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Vv.r8IGYm  
*/ :ue:QSt(u  
public void sort(int[] data) { *|.0Myjo  
int temp; `4?~nbz  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); HSUI${<  
} 0oZsb\  
} g#]" hn  
} 3f.b\4 U  
t_z>Cl^u  
} %M F;`;1  
K7knK  
冒泡排序:  fE f_F r  
$``1PJoi  
package org.rut.util.algorithm.support; !LMN[3M_  
Dr&('RZ4  
import org.rut.util.algorithm.SortUtil; 1@48BN8cm'  
\*hrW(   
/** PX: '/{V  
* @author treeroot Ks^6.)  
* @since 2006-2-2 Y_&g="`Q  
* @version 1.0 !l?.5Pm])  
*/ $4kH3+WJ  
public class BubbleSort implements SortUtil.Sort{ -&x2&WE'  
1/1Xk,E  
/* (non-Javadoc) 'VyM{:8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Bs+(L [Z  
*/ h` U?1xS  
public void sort(int[] data) { - O98pi  
int temp; >2$5eI  
for(int i=0;i for(int j=data.length-1;j>i;j--){ *K!|@h{60  
if(data[j] SortUtil.swap(data,j,j-1); /n~\\9#3  
} -C-?`R  
} n9w9JXp;!  
} `+'rib5  
} x9/H/'  
kE>0M9EdH  
} d<!3`qe  
sIG7S"k>p  
选择排序: Y?CCD4"qn  
b5$Jf jI  
package org.rut.util.algorithm.support; [yl sz?  
nkxzk$  
import org.rut.util.algorithm.SortUtil; Hgeg@RP Q  
ORGD  
/** >z;[2 n'  
* @author treeroot AqK z$  
* @since 2006-2-2 fx=Awba  
* @version 1.0 ,g-EW jN  
*/ rk+#GO{  
public class SelectionSort implements SortUtil.Sort { ~7~~S*EQ  
](tx<3h  
/* t*z~5_/  
* (non-Javadoc) <DKS+R  
* 0iULCK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H9h@sSg  
*/ IEKU-k7}Z  
public void sort(int[] data) { #_lt~^ 6  
int temp; C{sLz9  
for (int i = 0; i < data.length; i++) {  S( S#  
int lowIndex = i; /MY9 >  
for (int j = data.length - 1; j > i; j--) { z,qRcO&  
if (data[j] < data[lowIndex]) { ~<<nz9}o_  
lowIndex = j; /,!qFt  
} .)}@J5 P)  
} lzw3=H  
SortUtil.swap(data,i,lowIndex); ,NnhHb2\  
} sK{l 9  
} /? r?it  
>AoK/(yL.  
} A+y  
;\EiM;Q]  
Shell排序: WZOY)>K  
l"\~yNgk  
package org.rut.util.algorithm.support; ]k9)G*  
mNmLyU=d  
import org.rut.util.algorithm.SortUtil; {x'GJtpb  
V .os  
/** O: @}lK+H  
* @author treeroot m(], r})  
* @since 2006-2-2 -':Y\:W  
* @version 1.0 Hzrtlet  
*/ [: xiZ  
public class ShellSort implements SortUtil.Sort{ +/#Ei'do  
>=]'hyn]]  
/* (non-Javadoc) f;/QJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [V4{c@  
*/ GN KF&M  
public void sort(int[] data) { OB[o2G<0  
for(int i=data.length/2;i>2;i/=2){ 2H.654  
for(int j=0;j insertSort(data,j,i); j p $Z]  
} 763+uFx^  
} GUF"<k  
insertSort(data,0,1); K3\#E/Ox  
} gp$Ucfu'  
2o>)7^9|#<  
/** 83;NIE;  
* @param data }FzqW*4~  
* @param j WL`9~S  
* @param i \*,=S52  
*/ }g$(+1g  
private void insertSort(int[] data, int start, int inc) { G^q3Z#P  
int temp; gM [w1^lj  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); m*$|GW9  
} ]f]<4HD=i  
} 8/0Y vh  
} Ed9Z9  
}I@L}f5N  
} )DYI .  
"t^URp3  
快速排序: hJzxbr <  
<hwy*uBrD  
package org.rut.util.algorithm.support; a0Ik`8^`  
FgLrb#  
import org.rut.util.algorithm.SortUtil; _fZZ_0\Q  
WK="J6K5  
/** w.& 1%X(k  
* @author treeroot '#(v=|J  
* @since 2006-2-2 4t)%<4  
* @version 1.0 %pXAeeSY`;  
*/ <C9 XX~  
public class QuickSort implements SortUtil.Sort{ [F5h   
""s]zNF}  
/* (non-Javadoc) `vc "Q/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b)9'bJRvU  
*/ S(\9T1DVe  
public void sort(int[] data) { -=.V '  
quickSort(data,0,data.length-1); ?<6CFH]  
} l4TpH|k  
private void quickSort(int[] data,int i,int j){ 'ejvH;V3i  
int pivotIndex=(i+j)/2; "R8KQj  
file://swap Hcc"b0>}{  
SortUtil.swap(data,pivotIndex,j); %Th>C2\  
@iEA:?9uX  
int k=partition(data,i-1,j,data[j]); 4A9{=~nwT  
SortUtil.swap(data,k,j); ?|:BuHkT  
if((k-i)>1) quickSort(data,i,k-1); O@?k T;B  
if((j-k)>1) quickSort(data,k+1,j); e@{i  
0oEOre3^%  
} z&V+#Ws/  
/** #GJ dZ  
* @param data kNqH zo  
* @param i [o*7FEM|<  
* @param j L28*1]\Jh  
* @return ;Jd3u -  
*/ 6\61~u~  
private int partition(int[] data, int l, int r,int pivot) { I |# 5NE6  
do{ W+*5"h  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); *m2=/Sh  
SortUtil.swap(data,l,r); *Z_C4Tj  
} iMfngIs |  
while(l SortUtil.swap(data,l,r); XJ2^MF2BU  
return l; kh%{C] ".1  
} jYiv'6z  
3_q3Bk  
} JoSJH35=:  
OLI$1d_  
改进后的快速排序: eHDef  
^Q&u0;OJ  
package org.rut.util.algorithm.support; QJ|ap4r  
:8A!HI}m{  
import org.rut.util.algorithm.SortUtil; ~q&pF"va8  
.'a&3 3J  
/** )]#aauC+  
* @author treeroot Z@Ae$ '9H  
* @since 2006-2-2 5XLs} :  
* @version 1.0 nk3y"ne7  
*/ *Sh^ J+j  
public class ImprovedQuickSort implements SortUtil.Sort { xG;-bJu  
D/h/Y) Y  
private static int MAX_STACK_SIZE=4096; Jjl`_X$CB  
private static int THRESHOLD=10; )Fb>8<%  
/* (non-Javadoc) uIU5.\"s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XNgDf3T  
*/ w>b-} t  
public void sort(int[] data) { JJRK7\~$  
int[] stack=new int[MAX_STACK_SIZE]; <9> vO,n  
]:34kE}e5  
int top=-1; t#!yrQ..'G  
int pivot; sZ?mP;Q  
int pivotIndex,l,r; @,XSs  
#Wu*3&a]yU  
stack[++top]=0; k<+0o))  
stack[++top]=data.length-1; S.!UPkWH  
+{]xtQB=,{  
while(top>0){ @ |'5 n  
int j=stack[top--]; wW>)(&!F  
int i=stack[top--]; t20PP4FWM  
^*\XgX  
pivotIndex=(i+j)/2; ZIdA\_c  
pivot=data[pivotIndex]; -[L!3jU  
;l$ \6T  
SortUtil.swap(data,pivotIndex,j); 1n\ t+F  
_e9:me5d"$  
file://partition pStk/te,XK  
l=i-1; h~wi6^{&Y  
r=j; 5{$LsL  
do{ ^9-&o  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); X>?b#Eva  
SortUtil.swap(data,l,r); Mc!Xf[  
} ,C {*s$  
while(l SortUtil.swap(data,l,r); ,sGZ2=M}J  
SortUtil.swap(data,l,j); fqu}Le  
\n9zw'  
if((l-i)>THRESHOLD){ rxme(9M  
stack[++top]=i; *%vwM7  
stack[++top]=l-1; `>o?CIdp  
} Dz./w  
if((j-l)>THRESHOLD){ TE )gVE]  
stack[++top]=l+1; N$[$;Fm:  
stack[++top]=j; k=GG>]<i  
} 9C t`  
yPw'] "  
} Tlj:%yK2  
file://new InsertSort().sort(data); ^*~;k|;&  
insertSort(data); n4lutnF  
} exdx\@72  
/** $Ci0I+5w  
* @param data X,8<oX1r  
*/ hp"L8w  
private void insertSort(int[] data) { ^t7x84jhL  
int temp; *._|-L  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); LW:o8ES33  
} [31p&FxM  
} #yI.nzA*  
} "n:{ !1VGw  
)etmE  
} c%*($)#  
h d~$WV0#  
归并排序: wv^rS^~  
4.RG4Jq  
package org.rut.util.algorithm.support; dz>;<&2Z  
a}SdW  
import org.rut.util.algorithm.SortUtil; .WQ<jZt>  
^`f*'Z  
/** %<8nF5  
* @author treeroot 1009ES7*  
* @since 2006-2-2  'Pvm8t  
* @version 1.0 L !4t[hhe=  
*/ #"fJa:IYG7  
public class MergeSort implements SortUtil.Sort{ ob_I]~^I?|  
g]UBZ33y  
/* (non-Javadoc) ^TB>.c@`*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q !qrNa6  
*/ p$7#}s  
public void sort(int[] data) { Z`3ufXPNlO  
int[] temp=new int[data.length]; y$81Z q  
mergeSort(data,temp,0,data.length-1); ,&U4a1%i#c  
} )EyI0R]5  
VDB;%U*D  
private void mergeSort(int[] data,int[] temp,int l,int r){ T!W~n ZC  
int mid=(l+r)/2; sS TPMh  
if(l==r) return ; 2wqk,c[]  
mergeSort(data,temp,l,mid); 8vk..!7n}  
mergeSort(data,temp,mid+1,r); ^[Cv26  
for(int i=l;i<=r;i++){ w<9>Q1(  
temp=data; v&FF|)$  
} w#i[_  
int i1=l; 97!>%d[0  
int i2=mid+1; W(fr<<hL  
for(int cur=l;cur<=r;cur++){ l8K5k:XCU3  
if(i1==mid+1) p1c3Q$>i  
data[cur]=temp[i2++]; >MJ?g-  
else if(i2>r) I|$ RJkD  
data[cur]=temp[i1++]; }B7K@Wu#  
else if(temp[i1] data[cur]=temp[i1++]; G1 o70  
else ^7]"kg DA  
data[cur]=temp[i2++]; *=Z26  
}  QH]M   
} hl&-\dc+  
\RQ='/H*  
} }Vu\(~  
(SVWdgb  
改进后的归并排序: )x#5Il H  
]<DNo&fw  
package org.rut.util.algorithm.support; Pag63njg?  
a'\By?V]  
import org.rut.util.algorithm.SortUtil; !2:3MbtR  
>*twTlb{  
/** #sKWd  
* @author treeroot m"c :"I6  
* @since 2006-2-2 E99CmG|"  
* @version 1.0 2S`?hxAL  
*/ ^0W(hA  
public class ImprovedMergeSort implements SortUtil.Sort { /RLq>#:h**  
zm9TvoC%}  
private static final int THRESHOLD = 10; BcA31%  
+5v}q.:+  
/* PZ8U6K'  
* (non-Javadoc) x r(|*  
* q ^rl)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *5$&`&,  
*/ AgF5-tz6x  
public void sort(int[] data) { o-7>eE}+  
int[] temp=new int[data.length]; !\[+99F#  
mergeSort(data,temp,0,data.length-1); N12:{U  
} "%8A :^1  
0h$GI"dR  
private void mergeSort(int[] data, int[] temp, int l, int r) { i54md$Q^  
int i, j, k; ^C&+ ~+  
int mid = (l + r) / 2; p<WFqLe(":  
if (l == r) 7=4A;Ybq  
return; FDFH,J`_  
if ((mid - l) >= THRESHOLD) RaSz>-3d  
mergeSort(data, temp, l, mid); !/K8xD$  
else :<#`_K~'  
insertSort(data, l, mid - l + 1); 7dh1W@\  
if ((r - mid) > THRESHOLD) ~$O1`IT  
mergeSort(data, temp, mid + 1, r); 'UM!*fk7C  
else SN+ S6  
insertSort(data, mid + 1, r - mid); Jeqxspn T  
@E`?<|B}  
for (i = l; i <= mid; i++) { -jg (GGJ  
temp = data; /7$mxtB5%L  
} j&6 jRX  
for (j = 1; j <= r - mid; j++) { BX;5wKfA  
temp[r - j + 1] = data[j + mid]; 2^exL h  
} &A!KJ.  
int a = temp[l]; Y ?]G}5  
int b = temp[r]; F>|9 52  
for (i = l, j = r, k = l; k <= r; k++) { {F*N=pSq  
if (a < b) { ;Hm'6TR!  
data[k] = temp[i++]; rqCa 2  
a = temp; wCZO9sU:6=  
} else { |pZo2F!.  
data[k] = temp[j--]; gvli%9n  
b = temp[j]; d&:H&o)T!  
} >Pe:I  
} P#GD?FUc  
} {7Cx#Ewd  
>e5zrgV  
/** Q882B1H  
* @param data r -f  
* @param l d+z[\i  
* @param i urY`^lX~  
*/ F N"rZWM  
private void insertSort(int[] data, int start, int len) { 'zSgCgCHX8  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); <D/al9  
} j~ym<-[{a  
} g"t^r3  
} V*B0lI7`B  
} snk$^  
$CtCOwKZ  
堆排序: GCE!$W  
?)A2Kw>2  
package org.rut.util.algorithm.support; `]2@ _wa  
_^uc 0=  
import org.rut.util.algorithm.SortUtil; y[HQBv  
*)VAaGUX>  
/** 7{BnXN[  
* @author treeroot hd^x}iK"  
* @since 2006-2-2 G_oX5:J*  
* @version 1.0 $fArk36O#  
*/ |uha 38~  
public class HeapSort implements SortUtil.Sort{ `ypL]$cW  
Md(JIlh3  
/* (non-Javadoc) q&M:17+:Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K_-MkY?+  
*/ =mrY/ :V  
public void sort(int[] data) { qMgfMhQ7DU  
MaxHeap h=new MaxHeap(); hN4VlNKu  
h.init(data); '_Wt }{h  
for(int i=0;i h.remove(); #MTj)P,  
System.arraycopy(h.queue,1,data,0,data.length); , p0KLU\-  
} EnscDtf(  
IlHY%8F{  
private static class MaxHeap{ t!l%/$-  
>iy^$bqF  
void init(int[] data){ 4]6Qr  
this.queue=new int[data.length+1]; 2,AaP*,  
for(int i=0;i queue[++size]=data; g37q/nEv  
fixUp(size); N~g%wf@w  
} CX+9R3pa  
} /_OOPt=G  
QFzFL-H~N  
private int size=0; ,+-?Zv 2  
xURw,  
private int[] queue; B T7Id  
%8Yyj{^!(  
public int get() {  rA#s   
return queue[1]; ]18Ucf  
} uu3M{*}  
[2H[5<tH  
public void remove() { nO_!:6o".  
SortUtil.swap(queue,1,size--); 6F ;Or  
fixDown(1); ;C_ >  
} K`gc 4:A  
file://fixdown Ars,V3ep  
private void fixDown(int k) { )OUU]MUH  
int j; =, TSMV  
while ((j = k << 1) <= size) { \1{_lynD  
if (j < size %26amp;%26amp; queue[j] j++; 6H6Law!)  
if (queue[k]>queue[j]) file://不用交换 BvI 0v:  
break; sS'{QIRC'  
SortUtil.swap(queue,j,k); fM9xy \.  
k = j; lbofF==(  
} Bt6xV<jD  
} [)iN)$Mv  
private void fixUp(int k) { t[q3 {-  
while (k > 1) { 9@etg4#]  
int j = k >> 1; AgCs;k&IG  
if (queue[j]>queue[k]) cE 2Rr  
break; fr]Hc+7  
SortUtil.swap(queue,j,k); wKLN:aRF2  
k = j; 43F^J%G  
} 7H?! RYrx  
} iW-t}}Z>B  
D zE E:&*=  
} th9 0O|;  
:^.u-bHI  
} c*jr5 Y  
Ss+F9J  
SortUtil: 3m~U(yho  
XC2Q*Z  
package org.rut.util.algorithm; .:SfM r;G  
]ci RiMkT(  
import org.rut.util.algorithm.support.BubbleSort; @NBXyC8,Z  
import org.rut.util.algorithm.support.HeapSort; #e*$2+`[A  
import org.rut.util.algorithm.support.ImprovedMergeSort; zM)M_L  
import org.rut.util.algorithm.support.ImprovedQuickSort; ![j(o!6&  
import org.rut.util.algorithm.support.InsertSort; " _mmR M  
import org.rut.util.algorithm.support.MergeSort;  @}Pw0vC  
import org.rut.util.algorithm.support.QuickSort; P0Aas)!  
import org.rut.util.algorithm.support.SelectionSort; R,XD6'Q  
import org.rut.util.algorithm.support.ShellSort; br10ptEx  
FmR\`yY_,  
/** 3k`NNA  
* @author treeroot Mru~<:9  
* @since 2006-2-2 S [ i$e  
* @version 1.0 ;Xz(B4N~o  
*/ ;,R[]B01u  
public class SortUtil { p~ mN2x]  
public final static int INSERT = 1; Z#%}K Z  
public final static int BUBBLE = 2; La@\q[U{@  
public final static int SELECTION = 3; g+VRT, r  
public final static int SHELL = 4; /Lj%A   
public final static int QUICK = 5; x!Y(Y=i>  
public final static int IMPROVED_QUICK = 6; hLCsQYNDU  
public final static int MERGE = 7; {P,>Q4N  
public final static int IMPROVED_MERGE = 8; 1mAUEQ!  
public final static int HEAP = 9; T %$2k>  
Z+OAs0}mV  
public static void sort(int[] data) { T<! \B]  
sort(data, IMPROVED_QUICK); 3{6ps : w  
} o$*bm6o  
private static String[] name={ f;&` 9s| 1  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" [9'|7fdU  
}; ccIDMJ=2  
6hR^qdHg  
private static Sort[] impl=new Sort[]{ '3IkPy1Uz  
new InsertSort(), Cln^1N0  
new BubbleSort(), <aD'$(N5  
new SelectionSort(), jt0H5-x  
new ShellSort(), pW`ntE#L  
new QuickSort(), xzuPie\  
new ImprovedQuickSort(), gF$1wV]e  
new MergeSort(), Ka[Sm|-q  
new ImprovedMergeSort(), 0-6:AHix  
new HeapSort() "v*oga%  
}; gNG0k$nP  
nD^{Q[E6=  
public static String toString(int algorithm){ kq-mr  
return name[algorithm-1]; g| _HcaW  
} z0EjIYI[N  
#p']-No  
public static void sort(int[] data, int algorithm) { L{4),65  
impl[algorithm-1].sort(data); f$~ _FX  
} {ILp[ &sL  
\HBVNBY  
public static interface Sort { "it`X B.  
public void sort(int[] data); UwvGr h  
} *##QXyyg  
*C[4 (DmB  
public static void swap(int[] data, int i, int j) { ez{P-qB  
int temp = data; Lg\8NtP   
data = data[j]; #RCZA4>  
data[j] = temp; gPF}aaB6  
} Nv}U/$$S  
} )*q7pO\cty  
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