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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。 #5f-`~^C{  
插入排序: xXM{pd  
M%@!cW  
package org.rut.util.algorithm.support; |o\8  
JYTP 2  
import org.rut.util.algorithm.SortUtil; bFW=ylF9  
/** -?0qf,W.  
* @author treeroot m%76i;uP  
* @since 2006-2-2 gXjV?"^kUl  
* @version 1.0 d!$Z (W0  
*/ g[3)P+  
public class InsertSort implements SortUtil.Sort{ `DC2gJKk%  
.,OVzW  
/* (non-Javadoc) !1ED~3 /X  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PS[+~>%  
*/ S;)w.  
public void sort(int[] data) { tQjLOv+?=  
int temp; e:5bzk!~  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); *FMMjz  
} !7kG!)40  
} uH(f$A  
} svq<)hAf<  
#Jw1IcuH  
} s#WAR]x0x  
q,+yqrt  
冒泡排序: i{`;R  
`tn{ei  
package org.rut.util.algorithm.support; h]TQn)X]  
Vb= Mg  
import org.rut.util.algorithm.SortUtil; 4B^ZnFJ%m  
zaK#Z?V}  
/** fe9LEM8j  
* @author treeroot XR;eY:89  
* @since 2006-2-2 v^1pN>#%g  
* @version 1.0 nuw70*ell  
*/ yp({>{u7  
public class BubbleSort implements SortUtil.Sort{ MZT23 [+  
IkGfnXJ  
/* (non-Javadoc) {\:{[{qF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IyWI5Q"t  
*/ zc;|fHW~O  
public void sort(int[] data) { JW3B'_0  
int temp; '7i Sp=  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 50o~ P!Lz|  
if(data[j] SortUtil.swap(data,j,j-1); orjj' +;X  
} =fO5cA6Z  
} -}KC=,]vh  
} &FF"nE*  
} 23DiW#o'  
3U7 *>H  
} Jz2N  
U 15H2-`  
选择排序: Bi @2  
s]f6/x/~  
package org.rut.util.algorithm.support; `wDl<[V  
!Ikt '5/  
import org.rut.util.algorithm.SortUtil; &3n~ %$#N  
tF{D= ;G  
/** N-e @j4WU  
* @author treeroot a-|*?{o  
* @since 2006-2-2 K|:@Z  
* @version 1.0 'qOREN  
*/ x7eQ2h6O  
public class SelectionSort implements SortUtil.Sort { cT!\{ ~  
-UOj>{-  
/* 4UW_Do  
* (non-Javadoc) /#m=*&!CB  
* paD!Z0v&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NbU[l  
*/ Yd#/1!A7u  
public void sort(int[] data) { Y]B)'[=h  
int temp; Stu4t==U  
for (int i = 0; i < data.length; i++) { 6{^E{go  
int lowIndex = i; 8&)DE@W  
for (int j = data.length - 1; j > i; j--) { )C(? bR  
if (data[j] < data[lowIndex]) { X ><?F|#7T  
lowIndex = j; 93` AWg/T  
} 98uV6b~g  
} woD>!r>)  
SortUtil.swap(data,i,lowIndex); <7j87  
} C'o64+W^  
} ?C&z]f3(:  
~e+\k>^eN  
} ).sRv6/c  
S&b*rA02zp  
Shell排序: Z(ACc9k6:'  
"3)4vuX@;c  
package org.rut.util.algorithm.support; #w\~&0  
'Pn3%&O$  
import org.rut.util.algorithm.SortUtil; 2IKnhBSV3  
[g:$K5\64  
/** r0,:J   
* @author treeroot I~Zh@d%  
* @since 2006-2-2 uoX:^'q   
* @version 1.0 ^wc"&;=c|  
*/ X@LRsg  
public class ShellSort implements SortUtil.Sort{ RWg No #<  
R)RG[F#   
/* (non-Javadoc) [N#, K02mk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hR Ue<0o:  
*/ Dm-zMCf}Q  
public void sort(int[] data) { Ux}(?Z  
for(int i=data.length/2;i>2;i/=2){ iTAx=SG  
for(int j=0;j insertSort(data,j,i); jkt_5+S  
} ?Vf o+a,  
} Gr^E+#;  
insertSort(data,0,1); ]A<~XIu  
} +(1zH-^.  
D~$r\ ]av  
/** w6W}"Uw  
* @param data 7U2J xE  
* @param j '-"/ =j&d[  
* @param i 8@2OJ=`[  
*/ j&Wl0  
private void insertSort(int[] data, int start, int inc) { 4*cU<  
int temp; yX0dbW~@y  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); %+K<<iyR|  
} e[ /dv)J  
} _G.>+!"2/  
} yRfSJbzaf\  
IuRmEL_Q_  
} M#=] k  
kT!9`S\  
快速排序: \DD0s8  
Oms. e  
package org.rut.util.algorithm.support; nC}6B).el  
LM-J !44  
import org.rut.util.algorithm.SortUtil; p-/|mL  
45MLt5^|  
/** cdZ~2vk  
* @author treeroot v!ujj5-$I  
* @since 2006-2-2  $W9{P;  
* @version 1.0 eZdu2.;<  
*/ nCj2N,mT  
public class QuickSort implements SortUtil.Sort{ .%Ta]!0  
u( wGl_  
/* (non-Javadoc) NCk r /#!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Xp8]qH|K   
*/ *i- _6s  
public void sort(int[] data) { Z]j*9#G1s  
quickSort(data,0,data.length-1); )p~BQ~eip;  
} pk3<|  
private void quickSort(int[] data,int i,int j){ :SGF45>B@  
int pivotIndex=(i+j)/2; 3`ELKq  
file://swap n1&% e6XhO  
SortUtil.swap(data,pivotIndex,j); jlBanGs?  
~YRDyQ:%T  
int k=partition(data,i-1,j,data[j]); I>[RqG  
SortUtil.swap(data,k,j); o;=l ^-  
if((k-i)>1) quickSort(data,i,k-1); ]zQo>W$  
if((j-k)>1) quickSort(data,k+1,j); %_{tzXim  
HaYE9/xS  
} "E8zh|m o  
/** `> ?ra-  
* @param data nM-h&na{s  
* @param i A Q+]|XYo_  
* @param j Okm{Xx  
* @return L\&<sy"H  
*/ @1 U&UH  
private int partition(int[] data, int l, int r,int pivot) { 0em#-*|2"  
do{ y6IXdW  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); HKqwE=NZ  
SortUtil.swap(data,l,r); ;IVDr:  
} E 2"q3_,,  
while(l SortUtil.swap(data,l,r); rfgI$eu   
return l; :bWUuXVtJ  
} 6q]5Es<  
eOXHQjuj  
} ;B?DfWX  
xZQg'IT  
改进后的快速排序: =9z[[dQ|L  
7G\\{  
package org.rut.util.algorithm.support; L dm?JrU  
s_> f5/i2  
import org.rut.util.algorithm.SortUtil; \uXcLhXN  
#ssN027  
/** VH(S=G5Yb  
* @author treeroot ooV3gj4  
* @since 2006-2-2 t\ 7~S&z  
* @version 1.0 ]]&M@FM2z  
*/ Y;e,Gq`  
public class ImprovedQuickSort implements SortUtil.Sort { 6X\ 2GC9  
nIoPC[%_  
private static int MAX_STACK_SIZE=4096; -W<vyNSr  
private static int THRESHOLD=10; >9f%@uSM$3  
/* (non-Javadoc) 5e}A@GyC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [<{Kw=X__2  
*/ Vg>(  Y,  
public void sort(int[] data) { u_ '!_T L  
int[] stack=new int[MAX_STACK_SIZE]; qpsv i.S  
~>:Z6Le@   
int top=-1; \igmv]G%  
int pivot; .p=sBLp8  
int pivotIndex,l,r; DF g,Xa#  
r.T<j .\  
stack[++top]=0; Ga^Zb^y  
stack[++top]=data.length-1; kdCP  
PNA\ TXT  
while(top>0){ fnNYX]_bk  
int j=stack[top--]; q-rB2  
int i=stack[top--]; u@.>Z{h  
:UbM !  
pivotIndex=(i+j)/2; \/SQ,*O  
pivot=data[pivotIndex]; E%'~'[Q  
Qq@G\eRo  
SortUtil.swap(data,pivotIndex,j); H> '>3]G  
1$2D O  
file://partition cwuO[^S}  
l=i-1; :KKa4=5L  
r=j; ) gzR=9l  
do{ AxZD-|.  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); T /mI[*1xI  
SortUtil.swap(data,l,r); Bcjx>#3?L  
} ] )"u+  
while(l SortUtil.swap(data,l,r); V=X:=  
SortUtil.swap(data,l,j); +,&O1ykY  
b:(-  
if((l-i)>THRESHOLD){ Yyfq  
stack[++top]=i; {66fG53x  
stack[++top]=l-1; ?6k}ii!c  
} K 9kUS  
if((j-l)>THRESHOLD){ 3-%Cw2ds  
stack[++top]=l+1; {0@& OO:w  
stack[++top]=j; 5I,gBT|B  
} Jj= ;  
;ml 3  
} 7P B)'Wl"6  
file://new InsertSort().sort(data); Ln.ZVMZ;  
insertSort(data); bpkwn<7-  
} kJAn4I.l  
/** @O}7XRJ_8  
* @param data <X_!x_x  
*/ BT_tOEL#  
private void insertSort(int[] data) { EQe5JFR  
int temp; a P&D9%5  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); cDrebU  
} fRvAKz|rL  
} K?4FT$9G  
} / EMJSr  
k{AyD`'Q  
} -.<k~71  
>qo~d?+  
归并排序: s-W[ .r|  
e.o;eD}"  
package org.rut.util.algorithm.support; m9md|yS  
gr-x |wK  
import org.rut.util.algorithm.SortUtil; %vO<9fE|1  
zTD@  
/** kz q29S  
* @author treeroot [`Cq\mI-W  
* @since 2006-2-2 v8I{XU@%  
* @version 1.0 Hwm?#6\5  
*/ -Z^4L  
public class MergeSort implements SortUtil.Sort{ X8<2L 2:  
t/Z:)4Z  
/* (non-Javadoc) =Z sGT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ArI]`h'W  
*/ }4nT.!5  
public void sort(int[] data) { *o' 4,+=am  
int[] temp=new int[data.length]; sl/)|~3!8  
mergeSort(data,temp,0,data.length-1); #vf_D?^  
} `BnP[jF  
}t>q9bZ9z  
private void mergeSort(int[] data,int[] temp,int l,int r){ Z0fJ9 HW  
int mid=(l+r)/2; VG*'"y *%w  
if(l==r) return ; -U>7 H`5  
mergeSort(data,temp,l,mid); \,sg)^w@  
mergeSort(data,temp,mid+1,r); idJh^YD  
for(int i=l;i<=r;i++){ g-yi xU  
temp=data; F* #h9 Y  
} 16@);Ot  
int i1=l; K@@9:T$  
int i2=mid+1; jxy1  
for(int cur=l;cur<=r;cur++){ (3md:r<-  
if(i1==mid+1) ,.g}W~S)  
data[cur]=temp[i2++]; 0k?Sq#7q  
else if(i2>r) Yb=6C3l@  
data[cur]=temp[i1++]; %{STz  
else if(temp[i1] data[cur]=temp[i1++]; ;o$;Z4:.D  
else 67J*&5? |  
data[cur]=temp[i2++]; 64D%_8#m  
} 'Kis hXOn]  
} B4O6> '  
*\LyNL(  
} h39e)%x1  
 q{X T  
改进后的归并排序: G[q9A$yw  
DuF7HTN[K  
package org.rut.util.algorithm.support; rR!U;  
<pOl[5v]  
import org.rut.util.algorithm.SortUtil; +p?hGoF=  
cw+g z!!  
/** \ $;~74}  
* @author treeroot k,X74D+  
* @since 2006-2-2 lA{(8sKN  
* @version 1.0 Igjr~@ #  
*/ @\~tHJ?hQd  
public class ImprovedMergeSort implements SortUtil.Sort { ] C,1%(  
a9[<^  
private static final int THRESHOLD = 10; 6+ 8mV8{-8  
j@ C0af  
/* *mV&K\_  
* (non-Javadoc) /p$=Cg[K  
* bm}+}CJ@#0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M@O2 WB1ws  
*/ ih!~G5Xi9i  
public void sort(int[] data) { 4p x_ZD#J  
int[] temp=new int[data.length]; qG^_c;l6a  
mergeSort(data,temp,0,data.length-1); J"bD\%  
} OMd# ^z  
f N0bIE Y  
private void mergeSort(int[] data, int[] temp, int l, int r) { u0 BMyH  
int i, j, k; VV\Xb31J  
int mid = (l + r) / 2; 4OEKx|:5n  
if (l == r) +@>:%yX  
return; \[k% )_  
if ((mid - l) >= THRESHOLD) <N5rv3 s  
mergeSort(data, temp, l, mid); {~nvs4X  
else jI Z+d;1  
insertSort(data, l, mid - l + 1); K>LpN')d  
if ((r - mid) > THRESHOLD) aG Ef#A  
mergeSort(data, temp, mid + 1, r); RnSm]}?  
else /4H[4m]I  
insertSort(data, mid + 1, r - mid); fwH`}<o  
#~1wv^  
for (i = l; i <= mid; i++) { =Pj@g/25u  
temp = data; V*~423  
} '&)D>@g  
for (j = 1; j <= r - mid; j++) { Y.9~Bo<<r  
temp[r - j + 1] = data[j + mid]; \KN dZC?V2  
} 4$F:NW,v:)  
int a = temp[l]; W'V@  
int b = temp[r]; pEkOSG  
for (i = l, j = r, k = l; k <= r; k++) { `1$y(w]  
if (a < b) { eB7>t@ED  
data[k] = temp[i++]; v}&#f&q!  
a = temp; PC[cHgSYU  
} else { T|!D>l'  
data[k] = temp[j--]; ru DP529;  
b = temp[j]; OFIMi^@  
} /4^G34  
} o|+E+l9\  
} IJldN6&\q  
6QW<RXom  
/** @7 )Z  
* @param data l3BD <PB2S  
* @param l }U(\~ =D  
* @param i 5pB^Y MP  
*/ [pr 9 $Jr  
private void insertSort(int[] data, int start, int len) { erXy>H[;  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); *$JB`=Q  
} ~~ U<  
} C(xqvK~p  
} Z6NJ)XQy6F  
} HRj7n<>L=  
([[)Ub$U  
堆排序: Lr wINVa  
jk K#e$7  
package org.rut.util.algorithm.support; }Z"28?  
9jqO/_7R+  
import org.rut.util.algorithm.SortUtil; P$6W`^D Z  
DL %S(l  
/** +O&RBEa[  
* @author treeroot 3Ca \`m)l  
* @since 2006-2-2 E]\D>[0O  
* @version 1.0 #"hJpyW 4V  
*/ *Ao2j;  
public class HeapSort implements SortUtil.Sort{ qo)Q}0  
]bs+:  
/* (non-Javadoc) <"hb#Tn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yI3Q|731)  
*/ #-}kG"  
public void sort(int[] data) { NY.}uZ  
MaxHeap h=new MaxHeap(); -l\~p4U  
h.init(data); 6#-6Bh)>4  
for(int i=0;i h.remove(); dVPq%[J2  
System.arraycopy(h.queue,1,data,0,data.length); S&5Q~}{,  
} UaH26fWs  
:0WkxEY9  
private static class MaxHeap{ LKIW*M  
VV?]U$  
void init(int[] data){ kuWK/6l4  
this.queue=new int[data.length+1]; 8$2l^  
for(int i=0;i queue[++size]=data; \d `dV0X  
fixUp(size); UN-T ^  
} , D exJ1  
} cSY2#u|v  
- P\S>G.  
private int size=0; ->#y(}  
 QpdujtH`  
private int[] queue; _L?v6MTj  
Aqa6R+c  
public int get() { J ZVr&KZN  
return queue[1]; z0T`5N G@  
} &?KPu?9  
tn"Y9 k|  
public void remove() { T [i7C3QS  
SortUtil.swap(queue,1,size--); x?%rx}h  
fixDown(1); )9; (>cdl  
} WpXODkQL  
file://fixdown B`g<Ge~  
private void fixDown(int k) { C_;HaQiu  
int j; XD;15a  
while ((j = k << 1) <= size) { >E//pr)_Km  
if (j < size %26amp;%26amp; queue[j] j++; K)yCrEZ  
if (queue[k]>queue[j]) file://不用交换 k)N2 +/  
break; iifc;62  
SortUtil.swap(queue,j,k); JK@izI  
k = j; :SpG&\+  
} 3S[w'  
} =?meO0]y  
private void fixUp(int k) { gGtep*k  
while (k > 1) { ddUjs8VvJ  
int j = k >> 1; LVPt*S=/  
if (queue[j]>queue[k]) NWo7wVwc/c  
break; L LYHr  
SortUtil.swap(queue,j,k); O, bfdc[g4  
k = j; L eG7x7n  
} '#cT4_D^lI  
} |y{; |K  
lH#@^i|G  
} F|]o9&/<]  
l%sp[uqcg  
} j33P~H~  
6MLN>)t  
SortUtil: w5dI k]T  
1R5\GKF6o  
package org.rut.util.algorithm; -4*'WzWr  
^}i5 0SG:y  
import org.rut.util.algorithm.support.BubbleSort; 2a._?(k_y  
import org.rut.util.algorithm.support.HeapSort; xJ[k#?T'  
import org.rut.util.algorithm.support.ImprovedMergeSort; ,<uiitOo  
import org.rut.util.algorithm.support.ImprovedQuickSort; .LXh]I *  
import org.rut.util.algorithm.support.InsertSort; eZN3H"H  
import org.rut.util.algorithm.support.MergeSort; *j_fG$10g  
import org.rut.util.algorithm.support.QuickSort; IyG = 7  
import org.rut.util.algorithm.support.SelectionSort; a@5xz)  
import org.rut.util.algorithm.support.ShellSort; #a7Amh\nT  
%!ER@&1f&  
/** VgFF+Eg  
* @author treeroot M5cOz|j/*R  
* @since 2006-2-2 [6,]9|~  
* @version 1.0 C>w9 {h  
*/ G*vpf~q?  
public class SortUtil { _e:5XQ  
public final static int INSERT = 1; 1c<CEq:?e%  
public final static int BUBBLE = 2; )AnlFO+V  
public final static int SELECTION = 3; E&iWtwkz  
public final static int SHELL = 4; &J6o$i  
public final static int QUICK = 5; jM3Y|}+  
public final static int IMPROVED_QUICK = 6; F$6])F  
public final static int MERGE = 7; O, ``\(P  
public final static int IMPROVED_MERGE = 8; +2;#9aa I  
public final static int HEAP = 9; 9z| >roNe  
lry& )G=5  
public static void sort(int[] data) { `L"p)5H  
sort(data, IMPROVED_QUICK); %|D\j-~  
} E+^} B/"  
private static String[] name={ 7kX7\[zN  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" #U!(I#^3  
}; sO{0hZkc  
Z5*(W;;  
private static Sort[] impl=new Sort[]{ aCUV[CPw  
new InsertSort(), #5ohmp,u  
new BubbleSort(), I7q?V1f u4  
new SelectionSort(), ,rH)}C<Q+  
new ShellSort(), ~7ATt8T  
new QuickSort(), shDt&_n  
new ImprovedQuickSort(), Cb@S </b  
new MergeSort(), <D;H} ef  
new ImprovedMergeSort(), w371.84  
new HeapSort() !0. 5  
}; Hz3 S^o7  
#)PGQ)(  
public static String toString(int algorithm){ w}bEufU+2  
return name[algorithm-1]; cT>z  
} "f&i 251  
,syA()  
public static void sort(int[] data, int algorithm) { bW 86Iw  
impl[algorithm-1].sort(data); ];b!*Z  
} Zm; +Ku>  
 ,3@15j  
public static interface Sort { :`>+f.)  
public void sort(int[] data); o. V0iS]  
} d'AviW>  
G8(i).Q  
public static void swap(int[] data, int i, int j) { e@2Vn? 5  
int temp = data; l6`d48U  
data = data[j]; @rK>yPhf  
data[j] = temp; O 44IH`SI  
} X,!OWz:[  
} L1Cn  
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