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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。 ~H+W[r}  
插入排序: rdY/QvP0=  
G"'[dL)N>  
package org.rut.util.algorithm.support; F#az&  
5uJ{#Zd  
import org.rut.util.algorithm.SortUtil; s/=.a2\  
/** -Z/'kYj?U  
* @author treeroot 6d% |yl  
* @since 2006-2-2 ~5xs$ub  
* @version 1.0 6?X)'  
*/ 5 Y|(i1  
public class InsertSort implements SortUtil.Sort{ hG3p"_L  
/t<C_lLM  
/* (non-Javadoc) 9}TQ u0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a!?&8$^<  
*/ }s7ibm'  
public void sort(int[] data) { ncy?w e  
int temp; aRh1Q=^@(4  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 'J=knjAT  
} CaV>\E)  
} .!&S{;Vv?W  
} F~Z~OqCS  
+#/`4EnI  
} O@gHx!L  
)U':NV2  
冒泡排序: 1sHaG  
bR*/d-v^  
package org.rut.util.algorithm.support; jRv j:H9  
nYv`{0S+m  
import org.rut.util.algorithm.SortUtil; ~1`ZPLVG  
e#uk+]  
/** +l,6}tV9  
* @author treeroot ?g5u#Q> !  
* @since 2006-2-2 YV 5kzq  
* @version 1.0 ZvS|a~jO  
*/ E{-W#}#  
public class BubbleSort implements SortUtil.Sort{ KJf~9w9U  
>[U.P)7;  
/* (non-Javadoc) ny,a5zEnF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;J)8#|  
*/ 7rdPA9  
public void sort(int[] data) { pJK}9p=4`  
int temp; |4XR [eX  
for(int i=0;i for(int j=data.length-1;j>i;j--){  7z?r x  
if(data[j] SortUtil.swap(data,j,j-1); yye( ^  
} W,[b:[~v  
} r,` 59  
} @Q=P6Rz {S  
} '[6o(~ *  
\>>^eZ  
} {m&8Viq1  
ezOZHY>|#  
选择排序: ;~>E^0M  
96&Y  
package org.rut.util.algorithm.support; *Y@)t* -a  
+-|D$@8S  
import org.rut.util.algorithm.SortUtil; -'sn0 _q/e  
A>c/q&WUk  
/** V=C@ocy Z  
* @author treeroot _cW (R,i  
* @since 2006-2-2 6.!3g(w   
* @version 1.0 9b0M'x'W5  
*/ M_4:~&N$  
public class SelectionSort implements SortUtil.Sort { $)5-}NJf'  
(M5{y` Kk  
/* !Hk$  t  
* (non-Javadoc) R&Oqm hT!  
* (;11xu  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =>0+BD  
*/ #] @<YKoV{  
public void sort(int[] data) { zP|y3`. 52  
int temp; <KFE.\*Z4  
for (int i = 0; i < data.length; i++) { :IZ(9=hs  
int lowIndex = i; ?rD`'B  
for (int j = data.length - 1; j > i; j--) { ^lP_{ c  
if (data[j] < data[lowIndex]) { jmAQ!y|W.  
lowIndex = j; 0V:DeX$bZ  
} wK7wu.  
} :jFKTG  
SortUtil.swap(data,i,lowIndex); _uR-Z_z  
} ~[CtsCiQ  
} {\?zqIM  
#()u=)  
} 4+V+SD  
%>cl0W3x  
Shell排序: 8%$Vj  
WB=pRC@  
package org.rut.util.algorithm.support; 4[S0~O{r  
g36\%L  
import org.rut.util.algorithm.SortUtil; ]J t8]w  
4<['%7U_[  
/** ;Ly(O'9  
* @author treeroot Ef1R?<  
* @since 2006-2-2 \xH#X=J  
* @version 1.0 buXPeIo^VM  
*/ NjCdkT&g  
public class ShellSort implements SortUtil.Sort{ cdDMV%V  
zKi5e+\  
/* (non-Javadoc) ;9{x""  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Kzs]+Cl  
*/ x=>+.'K  
public void sort(int[] data) { ">n38:?R  
for(int i=data.length/2;i>2;i/=2){ [U]ouh)  
for(int j=0;j insertSort(data,j,i); vFK&63  
} vu%:0p` K  
} Uf`lGGM  
insertSort(data,0,1); !*0\Yi,6  
} r 3@Q(Rb  
5ml^3,x  
/** K8`M~P.  
* @param data x*~a{M,h  
* @param j G36}4  
* @param i U#O 6l-xe]  
*/ <(]e/}  
private void insertSort(int[] data, int start, int inc) { w>IYrSaa>  
int temp; e#YQA  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); _l&`* 2d  
} KUdpOMYX  
} uhuwQS=X  
} eB:OvOol*^  
>A$J5B >d  
} EBY=ccGE{  
!OJ@ =y`i  
快速排序: 6 1= ?(Iw  
3gW4\2|T  
package org.rut.util.algorithm.support; 3 <V{.T  
# $:ddO Y  
import org.rut.util.algorithm.SortUtil; |\ 1?CYx  
8+&] q#W3  
/** C^@.GA  
* @author treeroot h^P>,dy0  
* @since 2006-2-2 xg}RpC!  
* @version 1.0 gc:qqJi)X  
*/ U}xQUFT|  
public class QuickSort implements SortUtil.Sort{ }57wE$9K  
=?`5n|A*  
/* (non-Javadoc) }}3*tn<6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7-M$c7S  
*/ 3U&Qo nCV  
public void sort(int[] data) { PMJe6*(x/  
quickSort(data,0,data.length-1); wX6VapFboI  
} qAsZ,ik  
private void quickSort(int[] data,int i,int j){ 7@MGs2  
int pivotIndex=(i+j)/2; }2.^n{Y  
file://swap v hUn3|  
SortUtil.swap(data,pivotIndex,j); qy`95^  
s D] W/  
int k=partition(data,i-1,j,data[j]); rsP3?.E  
SortUtil.swap(data,k,j); |H.(?!nTb  
if((k-i)>1) quickSort(data,i,k-1); 8k$iz@e  
if((j-k)>1) quickSort(data,k+1,j); ,Ty>sZ#/fz  
M%wj6!5  
} '|0Dt|$  
/** *M_.>".P  
* @param data D?rQQxb  
* @param i #&G^%1!  
* @param j " }@QL`  
* @return E'=~<&  
*/ @WX]K0 $;  
private int partition(int[] data, int l, int r,int pivot) { {m9OgR5U  
do{  4q)eNcs  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 9$,?Grw~  
SortUtil.swap(data,l,r); q P@4KH} e  
} ?aInn:FE  
while(l SortUtil.swap(data,l,r); +]Oq{v:e  
return l; Q)}sX6TB  
} W'\{8&:!  
cLH|;  
} Bv $;yR  
t;9f7~  
改进后的快速排序: [R j=k)aBm  
3LZ0EYVL  
package org.rut.util.algorithm.support; ^f{+p*i}:  
tvptaw A.  
import org.rut.util.algorithm.SortUtil; }%EQ  
93%U;0w[Nw  
/** Y%$57,Bu n  
* @author treeroot WlVC0&  
* @since 2006-2-2 m,3?*0BMp=  
* @version 1.0 cpB$bC](  
*/ 1Y410-.3w{  
public class ImprovedQuickSort implements SortUtil.Sort { x%ZjGDFm  
"sz)~Q'W5  
private static int MAX_STACK_SIZE=4096; dL>0"UN}-  
private static int THRESHOLD=10; b0]y$*{j  
/* (non-Javadoc) H~+D2A  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !`vm7FN"u  
*/ __""!Yz  
public void sort(int[] data) { vBd^=O  
int[] stack=new int[MAX_STACK_SIZE]; 0fnd9`N!0  
 OvU]|4h  
int top=-1; -IJt( X|  
int pivot; `gy]|gS#b  
int pivotIndex,l,r; E7+ y W  
KcVCA    
stack[++top]=0; \>w[#4`m  
stack[++top]=data.length-1; 6 $%^  
F#@Mf?#2  
while(top>0){ e9h T  
int j=stack[top--]; Kz!-w  
int i=stack[top--]; p^+k:E>U  
i/*&;  
pivotIndex=(i+j)/2; \cvui^^n  
pivot=data[pivotIndex]; @* L^Jgn  
G*e/Ft.wf8  
SortUtil.swap(data,pivotIndex,j); `9eE139V='  
E/:<9xl  
file://partition ?gjM]Ki%:  
l=i-1; _ Onsfv  
r=j; 3A]Y=gfa  
do{ \`r5tQr  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); BCF- lrZ&  
SortUtil.swap(data,l,r); gNl@T  
} [i.2lt#]  
while(l SortUtil.swap(data,l,r);  N\DEY]  
SortUtil.swap(data,l,j); fR!'i):u  
v')Fq[H  
if((l-i)>THRESHOLD){ t#oY|G3O}  
stack[++top]=i; `!5 ZF@Q>e  
stack[++top]=l-1; !l@IG C  
} YY]JjMkU  
if((j-l)>THRESHOLD){ {) 4D1  
stack[++top]=l+1; :{%6< j  
stack[++top]=j; lRnst-inlI  
} 2t\a/QE)E  
3> -/sii  
} V{;Mh u`+  
file://new InsertSort().sort(data); |~k=:sSz{  
insertSort(data); BBnbXhxZ  
} * 4G J<  
/** qX`?4"4  
* @param data 4p&qH igG  
*/ }u5;YNmXxF  
private void insertSort(int[] data) { {FraM,w:  
int temp; u&".kk  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); |vA3+kG  
} T5,/;e  
} S0 M-$  
} ^]^Y~$u  
nX<!n\J T  
} n NZq`M  
Lie\3W  
归并排序: <WtX> \]l(  
cnC&=6=a<  
package org.rut.util.algorithm.support; S #%'Vrp  
cC1nC76[  
import org.rut.util.algorithm.SortUtil; 8$-Wz:X&  
MOP %vS   
/** P~iu|j  
* @author treeroot PX52a[wNDH  
* @since 2006-2-2 F4>}mIA  
* @version 1.0 ItHKpTe r  
*/ Lo @mQ  
public class MergeSort implements SortUtil.Sort{ 0@{K'm /  
vLJ<_&6  
/* (non-Javadoc) ZU7e1VaZM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UL$^zR3%d  
*/ =:v\}/  
public void sort(int[] data) { C78YHjy  
int[] temp=new int[data.length]; jwyJ=W-  
mergeSort(data,temp,0,data.length-1); rPkV=9ull,  
} bV|:MW <Wv  
<_8\}!  
private void mergeSort(int[] data,int[] temp,int l,int r){ y _>HQs,:  
int mid=(l+r)/2; ;2@MPx  
if(l==r) return ; {-J/ <a@  
mergeSort(data,temp,l,mid); ~<Uwum v  
mergeSort(data,temp,mid+1,r); tx Lo =  
for(int i=l;i<=r;i++){ KnbT2  
temp=data; / _-?NZ  
} b\"JXfw  
int i1=l; 2sjV*\Udf  
int i2=mid+1; k# ZO4  
for(int cur=l;cur<=r;cur++){ -o6K_R}R  
if(i1==mid+1) h|mh_T{+  
data[cur]=temp[i2++]; 52/^>=t  
else if(i2>r) "d/x`Dx  
data[cur]=temp[i1++]; ik_Ll|  
else if(temp[i1] data[cur]=temp[i1++]; 724E(?>J  
else }E[S%W[  
data[cur]=temp[i2++]; ;" '` P[  
} 0!o&=Qh  
} \=v7'Hp  
XUfj 0  
} R0_%M  
X3%7VFy9  
改进后的归并排序: U%"c@%B0  
[{ K$sd  
package org.rut.util.algorithm.support; nORm7sa9  
XB UO  
import org.rut.util.algorithm.SortUtil; ae{% * \J  
fBS;~;l  
/** E@hvO%  
* @author treeroot <w+K$WE {  
* @since 2006-2-2 fxXZ^#2wX  
* @version 1.0 ^;$a_eR  
*/ ?W1( @.  
public class ImprovedMergeSort implements SortUtil.Sort { E).N u  
L,p5:EW8.  
private static final int THRESHOLD = 10; {tk42}8k  
5'?K(Jdmp  
/* bT,]=h"0  
* (non-Javadoc) U P GS  
* L qMH]W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]MfT5#(6h  
*/ `]_#_  
public void sort(int[] data) { J1YP-:  
int[] temp=new int[data.length]; ,m{Zn"?kS  
mergeSort(data,temp,0,data.length-1); ]L^X}[SH  
} R#1h.8  
`22F@JYN  
private void mergeSort(int[] data, int[] temp, int l, int r) { F4M<5Yi  
int i, j, k; &`0y<0z  
int mid = (l + r) / 2; Z 3m5DK  
if (l == r) `XB(d@%  
return; *e H[~4  
if ((mid - l) >= THRESHOLD) -i:Zi}f  
mergeSort(data, temp, l, mid); {kD|8["Ie'  
else R}8!~Ma`|  
insertSort(data, l, mid - l + 1); `LVItP(GUM  
if ((r - mid) > THRESHOLD) &7,Kv0j}  
mergeSort(data, temp, mid + 1, r); CSRcTxH  
else z ,87;4-  
insertSort(data, mid + 1, r - mid); }N#jA yp!  
s7tNAj bgD  
for (i = l; i <= mid; i++) { 15 x~[?!  
temp = data; p )etl5  
} ba1zu|@w  
for (j = 1; j <= r - mid; j++) { ah>;wW!6/  
temp[r - j + 1] = data[j + mid]; ,u-i9`B  
} fCJ:QK!  
int a = temp[l]; Mou>|U 1e"  
int b = temp[r]; |#^u%#'[2  
for (i = l, j = r, k = l; k <= r; k++) { "KcSOjvJ  
if (a < b) { Z=|:D,&  
data[k] = temp[i++]; t~)w921>  
a = temp; wr~# rfH  
} else { MIub^ $<C  
data[k] = temp[j--]; U O YM   
b = temp[j]; lfOF]Kiqr  
} 5]:fkx  
} D06'"  
} @C0{m7q  
) 2wof(  
/** I?c# T Rm  
* @param data Y\(Q  
* @param l q{ n~v>wU  
* @param i 0\qbJ  
*/ QxwZ$?w%  
private void insertSort(int[] data, int start, int len) { sl}bNzT#  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Gn<s >3E  
} yd]W',c  
} _*0!6?c  
} w{#K.dx  
} kpsus \T  
@OZW1p  
堆排序: 30-XFl  
#.$p7]  
package org.rut.util.algorithm.support; rtS(iD@B"  
DM/J,q  
import org.rut.util.algorithm.SortUtil; Qf6]qJa|  
rV<yM$IA  
/** 2P`hdg  
* @author treeroot KV k 36;$  
* @since 2006-2-2 12gcma}  
* @version 1.0 PPU,o8E+  
*/ kG[u$[B  
public class HeapSort implements SortUtil.Sort{ yBXdj`bV  
^:5 ;H=.  
/* (non-Javadoc) oZHsCQ%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sw6]Bc  
*/ A-aukJg9  
public void sort(int[] data) { /k|y\'<  
MaxHeap h=new MaxHeap(); 'uGn1|Pvy  
h.init(data); \9geDX9A  
for(int i=0;i h.remove(); {wih)XNY  
System.arraycopy(h.queue,1,data,0,data.length); =>-:o:Cu{  
} 1"RO)&  
v*7}ux8  
private static class MaxHeap{ (/14)"Sk  
K{B[(](  
void init(int[] data){ DNcf2_m  
this.queue=new int[data.length+1]; U 3aY =8B  
for(int i=0;i queue[++size]=data; @\e2Q& O  
fixUp(size); d&&^_0O  
} 4ZrX= e,  
} hC4##pAa  
kIWQ _2  
private int size=0; 8G`fSac`  
}BlVLf%C  
private int[] queue; u7ZSs-LuHw  
wo5"f}vd#  
public int get() { v~[=|_{  
return queue[1]; v3x_8n$C9  
} dqwAQ-x  
Z)<ljW  
public void remove() { _Isju S  
SortUtil.swap(queue,1,size--); SL zL/5s  
fixDown(1); @Iia>G @Rz  
} }OZ%U2PU  
file://fixdown U+CZv1  
private void fixDown(int k) { C=2  
int j;  Iz*'  
while ((j = k << 1) <= size) { f9W@!]LHJ  
if (j < size %26amp;%26amp; queue[j] j++; UX}ZE.cV  
if (queue[k]>queue[j]) file://不用交换 k(+ EY%  
break; Vcz ExP  
SortUtil.swap(queue,j,k); <k-&Lh:o3  
k = j; =o^oMn  
} 8ME_O~,N  
} 2~Z P[wr  
private void fixUp(int k) { FPE[}  
while (k > 1) { YHAhF@&  
int j = k >> 1; Y*/:IYr`  
if (queue[j]>queue[k]) 3?iRf6;n  
break; E;.<'t>  
SortUtil.swap(queue,j,k); ~KHGh29  
k = j; ,#hS#?t   
} OJPx V~y  
} }-?_c#G 3  
t}>6"^}U  
} *%5 .{J!  
x9k(mn%,  
} _p<W  
FivgOa  
SortUtil: 6d&dB  
-CtLL _I  
package org.rut.util.algorithm; ,l^; ZE  
}R4%%)j(Vj  
import org.rut.util.algorithm.support.BubbleSort; p \A^kX^5  
import org.rut.util.algorithm.support.HeapSort; o%XAw   
import org.rut.util.algorithm.support.ImprovedMergeSort; kW0|\  
import org.rut.util.algorithm.support.ImprovedQuickSort; DP ,owk  
import org.rut.util.algorithm.support.InsertSort; c ]M!4.  
import org.rut.util.algorithm.support.MergeSort; ~XQj0'  
import org.rut.util.algorithm.support.QuickSort; fgIzT!fyz  
import org.rut.util.algorithm.support.SelectionSort; va F^[/ (g  
import org.rut.util.algorithm.support.ShellSort; = Ryh@X&  
M]4qS('[  
/** ,r~pf (nz  
* @author treeroot teH.e!S  
* @since 2006-2-2 )w(-Xc?P  
* @version 1.0 4Xt.}S!  
*/ }tA77Cm)45  
public class SortUtil { j hf%ze  
public final static int INSERT = 1; H^z6.!$m  
public final static int BUBBLE = 2; (oTtnQ""+  
public final static int SELECTION = 3; Q xZYy}2  
public final static int SHELL = 4; <9z2:^  
public final static int QUICK = 5; (8qD'(@  
public final static int IMPROVED_QUICK = 6; piKYO+;W'  
public final static int MERGE = 7; &oI;^|  
public final static int IMPROVED_MERGE = 8; L;N)l2m.\  
public final static int HEAP = 9; Q%)da)0:c  
#$7d1bx  
public static void sort(int[] data) { Xu\FcQ{  
sort(data, IMPROVED_QUICK); 12qX[39/  
} lx _jy>$}r  
private static String[] name={ vVB8zS~l ,  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" `>KB8SY:qK  
}; XgL-t~_  
jkCa2!WQ'i  
private static Sort[] impl=new Sort[]{ V'?bZcRr~  
new InsertSort(), {R<0 'JU  
new BubbleSort(), H8.Aq\2S  
new SelectionSort(), J&Ig%&/  
new ShellSort(), "#,]` ME;  
new QuickSort(), YHBH9E/B  
new ImprovedQuickSort(), j_H"m R  
new MergeSort(), g(Q)fw  
new ImprovedMergeSort(), ?.Mw  
new HeapSort() ERD( qL.J  
}; f$#--*  
gS{hfDpk,h  
public static String toString(int algorithm){ %N+8K  
return name[algorithm-1]; _RI`I}&9Z  
} *+|D8xp  
mU0j K@^&M  
public static void sort(int[] data, int algorithm) { qQK0s*^W  
impl[algorithm-1].sort(data); v0uDL7  
} -OV:y],-  
6[3oOO:uo  
public static interface Sort { \yt-_W=[  
public void sort(int[] data); s zBlyT  
} S}L$-7Ct  
r:pS[f|4\  
public static void swap(int[] data, int i, int j) { d&[Ct0!++u  
int temp = data; `! ~~Wf'  
data = data[j]; v:/+Oz Y  
data[j] = temp; JxI\ss?O  
} 1 EE4N\  
} 3sr> ?/>:  
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