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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。 s1!_zf_  
插入排序: jaAv_=93f  
J]f\=;z;<a  
package org.rut.util.algorithm.support; S"iQQV{)Z  
X`ifjZ9}d  
import org.rut.util.algorithm.SortUtil; t:X[Blw3$  
/** *6)u5  
* @author treeroot %^l77 :O  
* @since 2006-2-2 TXi$Q%0W  
* @version 1.0 *XmOWV2Y_  
*/ @5%cP  
public class InsertSort implements SortUtil.Sort{ !P, 9Sg&5)  
m<BL/ 7  
/* (non-Javadoc) nFl=D=50-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AcN~Q/xU  
*/ N[j7^q7Xt  
public void sort(int[] data) { #=f ]"uM<  
int temp; sX3Vr&r  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); W 9Z.X!h  
} VZ*Q|  
} JlF0L%Rc  
} [|2uu."$  
@NXGVmY1}  
} [H#I:d-+\  
xa#:oKF3  
冒泡排序: |67j__XC  
U/M(4H3>H  
package org.rut.util.algorithm.support; =L$};ko  
J ,fXXi)J  
import org.rut.util.algorithm.SortUtil;  ]D7z&h  
B{W2D  
/** j=)%~@  
* @author treeroot kRgyvA,*;  
* @since 2006-2-2 {sy#&m(el  
* @version 1.0 g S;p::  
*/ $&m^WrZaY  
public class BubbleSort implements SortUtil.Sort{ nm*!#hx  
i\B >J?Q\  
/* (non-Javadoc) 0+O)~>v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ij6ME6  
*/ Y.yM1 z  
public void sort(int[] data) { (J): >\a]  
int temp; HPAg1bV:-  
for(int i=0;i for(int j=data.length-1;j>i;j--){ -9{}rE  
if(data[j] SortUtil.swap(data,j,j-1); `^s(r>2  
} sp[nKo ^  
} _f,q8ZkSr  
} >ofS'mp  
} :Qu!0tY  
F5%-6@=  
} 3vOI=ar=L~  
+I2P{7  
选择排序: pM\)f  
)^)VyI`O  
package org.rut.util.algorithm.support; IgC)YIhd  
V0L^pDLOV  
import org.rut.util.algorithm.SortUtil; "8Pxf=   
SV]M]CAe  
/** _3T*[s;H  
* @author treeroot IqEY.2KN  
* @since 2006-2-2 Tm_vo-   
* @version 1.0 Ydmz!CEu  
*/ lw? f2_fi  
public class SelectionSort implements SortUtil.Sort { w"-bO ~5h  
~@z5Ld3xz  
/* @P"q`*  
* (non-Javadoc) sEdWBT 8  
* l~&efAJ-$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ekP=/;T#S  
*/ YjS|Ht->  
public void sort(int[] data) { K;-:C9@  
int temp; ;oC85I  
for (int i = 0; i < data.length; i++) { [_qBp:_j?s  
int lowIndex = i; Z|d_G}  
for (int j = data.length - 1; j > i; j--) { \,JRNL&   
if (data[j] < data[lowIndex]) { /Os)4yH\  
lowIndex = j; s Xl7  
} >Q+a'bd w  
} ,D3q8?j  
SortUtil.swap(data,i,lowIndex); u!nt0hS  
} I_#)>%H  
} xzMa[D4(  
`X^ 4~6/q  
} WLNkO^zb  
SNff  
Shell排序: 2Pi}<pG~  
J~<:yBup}  
package org.rut.util.algorithm.support; X~G"TT$)  
x`%;Q@G  
import org.rut.util.algorithm.SortUtil; C(iA G  
|fTQ\q]W  
/** r9s1\7]x  
* @author treeroot s&y  
* @since 2006-2-2 4_t aCK  
* @version 1.0 =q[3/'2V$?  
*/ :n'QN Gj  
public class ShellSort implements SortUtil.Sort{ ,)GCg@7B  
YQ37P?u@  
/* (non-Javadoc) Rl3KE)<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .1|'9@]lj4  
*/ RLulz|jC  
public void sort(int[] data) { A1%V<im@Z  
for(int i=data.length/2;i>2;i/=2){ sTv/;*  
for(int j=0;j insertSort(data,j,i); ])~*)I~Y  
} Q6%m}R  
} a%(1#2^`q!  
insertSort(data,0,1); `p#A2Ap A  
} B7 }-g"p$/  
,{8~TVO  
/** g"C$B Fc  
* @param data hUA3(!0)  
* @param j C _[jQTr  
* @param i (: ZOoL  
*/ do=VPqy  
private void insertSort(int[] data, int start, int inc) { ]X?+]9Fr  
int temp; }(M<sEK~  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); v l{hE~  
} o{UwUMw5`  
} b;m6m4i'f{  
} mvUYp,JECl  
[(btpWxb^  
} kmov(V  
yg\A&0I  
快速排序: O%c6vp7  
tinN$o Xy  
package org.rut.util.algorithm.support; =/dW5qy;*+  
A| Y\Y}  
import org.rut.util.algorithm.SortUtil; YLobBtXc9  
Ubn5tN MK  
/** msY"Y*4  
* @author treeroot Vaq=f/  
* @since 2006-2-2 C(,s_Ks  
* @version 1.0 |UR.7rOV  
*/ 8zVXQ!'  
public class QuickSort implements SortUtil.Sort{ Qr0JJoHT  
JxD@y}ZYE  
/* (non-Javadoc) S$JM01  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sL&u%7>Re  
*/ D;d;:WT5  
public void sort(int[] data) { T_Y6AII  
quickSort(data,0,data.length-1); 9sE>K)  
} jjl4A} *0  
private void quickSort(int[] data,int i,int j){ )-jvp8%BK  
int pivotIndex=(i+j)/2; NoYu"57\  
file://swap zo\Xu oZ  
SortUtil.swap(data,pivotIndex,j); oTx#e[8f{  
lc5NC;JR  
int k=partition(data,i-1,j,data[j]); @KS:d\l}U  
SortUtil.swap(data,k,j); ;WGY)=-gv  
if((k-i)>1) quickSort(data,i,k-1); ^Gd <miw  
if((j-k)>1) quickSort(data,k+1,j); Vx0V6{JX  
P"i qP|  
} bQ .y,+  
/** O _1}LS!  
* @param data /#,<> EfT  
* @param i ojIh;e  
* @param j 4 &|9304<H  
* @return bJBx~  
*/ 3`e1:`Hu  
private int partition(int[] data, int l, int r,int pivot) { 7B&nV92S  
do{ 8u+ (+25  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); `H+Eo<U  
SortUtil.swap(data,l,r); #d|.BxH  
} 1^Caz-  
while(l SortUtil.swap(data,l,r); slQKkx \Dn  
return l; Kw?,A   
} ]e"NJkcm  
ORHC bw9  
} d!wd,Xj}  
wk5a &  
改进后的快速排序: }%XNB1/`  
'QW 0K]il  
package org.rut.util.algorithm.support; #x%O0  
{UPIdQ'g  
import org.rut.util.algorithm.SortUtil; np>*O}r*  
jgGn"}  
/** 9f"6Jw@F  
* @author treeroot Wq>j;\3b3  
* @since 2006-2-2 mU\$piei  
* @version 1.0 BO[A1'>  
*/ uox;PDK  
public class ImprovedQuickSort implements SortUtil.Sort { vF([mOZ  
!8A5Y[(XD  
private static int MAX_STACK_SIZE=4096; H"&N<"hw  
private static int THRESHOLD=10; iySmNI  
/* (non-Javadoc) ;hZ(20  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~;`i&s  
*/ .OWIlT4K  
public void sort(int[] data) { *aT!|;  
int[] stack=new int[MAX_STACK_SIZE]; Nm^q.)dO  
qK#* UR0%  
int top=-1; .#Sd|C]R7  
int pivot; u>? VD%  
int pivotIndex,l,r; !*\^-uvaK  
t(_XB|AKm  
stack[++top]=0; _*`AGda  
stack[++top]=data.length-1; g@EKJFjl  
z&t6,0q`5  
while(top>0){ em W#ZX  
int j=stack[top--]; R0=/ Th -  
int i=stack[top--]; S%T1na^x  
4a646jg)  
pivotIndex=(i+j)/2; 2]C0d8=*?  
pivot=data[pivotIndex]; W&yw5rt**  
tx.YW9xD  
SortUtil.swap(data,pivotIndex,j); :#|77b0  
\NSwoP  
file://partition K8RloDjk_A  
l=i-1; uV\=EDno  
r=j; /3c1{%B\  
do{ %%3ugD5i!  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Em?skUnG,  
SortUtil.swap(data,l,r); X:!%"K%}  
} x)GoxH~#  
while(l SortUtil.swap(data,l,r); X F40;urm  
SortUtil.swap(data,l,j); `kz_ q/K  
N4}h_mh^'  
if((l-i)>THRESHOLD){ @a3<fmJ  
stack[++top]=i; *Js<VR  
stack[++top]=l-1; :g\qj? o  
} x*)Wl!  
if((j-l)>THRESHOLD){ lW2qVR  
stack[++top]=l+1; oC?b]tzj  
stack[++top]=j; yqYX<<!V  
} =kCpCpET  
Nyo6R9^  
} ?O3 G  
file://new InsertSort().sort(data); ~/Ry=8   
insertSort(data); < xV!vN  
} v>e4a/  
/** Y{S/A*X  
* @param data );*GOLka  
*/ }@#e D  
private void insertSort(int[] data) { ZcQm(my  
int temp; cK?t]%S  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Vw#07P#A  
} ov+qYBuFw  
} mR{0*<  
} }i[jJb`bY  
:,u+[0-S  
} F 4h EfO3  
tJn2:}-s  
归并排序: +u Lu.-N  
~cez+VQe  
package org.rut.util.algorithm.support; _1hqD EM  
+Rvj]vd}&  
import org.rut.util.algorithm.SortUtil; 9Z*vp^3  
Ue\&  
/** 2V0R|YUt  
* @author treeroot q\/|nZO4  
* @since 2006-2-2 *V\kS  
* @version 1.0 h'}5 "m  
*/ yQW\0&a$  
public class MergeSort implements SortUtil.Sort{ `=>Bop)  
p 2i5/Ly  
/* (non-Javadoc) b9vKux  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T]myhNk  
*/ L%<1C \k  
public void sort(int[] data) { 0$ (}\hMLt  
int[] temp=new int[data.length]; J'7Oxjlg  
mergeSort(data,temp,0,data.length-1); ?L $KlF Y  
} MaEh8*  
l)|CPSN?w  
private void mergeSort(int[] data,int[] temp,int l,int r){ =1,g#HS  
int mid=(l+r)/2; r({(;  
if(l==r) return ; M-Js"cB[  
mergeSort(data,temp,l,mid); Pf!K()<uJ  
mergeSort(data,temp,mid+1,r); 4VooU [Ka(  
for(int i=l;i<=r;i++){ v#X? KqD  
temp=data; F0yh7MItV  
} J2R<'(  
int i1=l; QO,y/@Ph  
int i2=mid+1; [sad}@R7  
for(int cur=l;cur<=r;cur++){ 6xOR,p>E  
if(i1==mid+1) `?$R_uFh:  
data[cur]=temp[i2++]; U8c0C/  
else if(i2>r) g5"g,SFGr  
data[cur]=temp[i1++]; N8vWwN[3  
else if(temp[i1] data[cur]=temp[i1++]; 5M(?_qj  
else FxUH ?%w  
data[cur]=temp[i2++]; uaGg8  
} Ff,M ~zn  
} %_u3Np  
IFE C_F>  
} v|"{x&I.  
^NCH)zK]v  
改进后的归并排序: `K@   
S*]IR"YL  
package org.rut.util.algorithm.support;  <O*q;&9  
QVP $e`4  
import org.rut.util.algorithm.SortUtil; CeZ5Ti?F  
<wuP*vI "h  
/** z#\Z|OKU  
* @author treeroot S38D cWIw  
* @since 2006-2-2 +]__zm/^  
* @version 1.0 %d>Ktf  
*/ "au"\}   
public class ImprovedMergeSort implements SortUtil.Sort { Qh*|mW  
15zL,yo  
private static final int THRESHOLD = 10; mrJQB I+  
o1Xk\R{  
/* m$o|s1t  
* (non-Javadoc) "L ,FUo^&  
* cVz.ac  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $a-~ozr`C  
*/ +-oXW>`&  
public void sort(int[] data) { Mz06cw&  
int[] temp=new int[data.length]; $+mmqc8  
mergeSort(data,temp,0,data.length-1); ~E!"YkIr  
} 1S=I(n?E  
@wg*~"d  
private void mergeSort(int[] data, int[] temp, int l, int r) { hcBfau;r  
int i, j, k; 2"mO"2d%  
int mid = (l + r) / 2; /0r2v/0  
if (l == r) & =frt3  
return; }r i"u;.R  
if ((mid - l) >= THRESHOLD) W w8[d  
mergeSort(data, temp, l, mid); J0>Q+Y  
else XGUF9arN  
insertSort(data, l, mid - l + 1); &&m%=i.qK  
if ((r - mid) > THRESHOLD) KomF)KQ2r  
mergeSort(data, temp, mid + 1, r); (YR] X_  
else Mpj3<vj   
insertSort(data, mid + 1, r - mid); X{ Nif G  
sz)3 z  
for (i = l; i <= mid; i++) { & IDF9B  
temp = data; tf/ f-S  
} KctD=6  
for (j = 1; j <= r - mid; j++) { w@"|S_E  
temp[r - j + 1] = data[j + mid]; :;JJvYIs  
} [<%yUy  
int a = temp[l]; weu'<C   
int b = temp[r]; jf})"fz-*  
for (i = l, j = r, k = l; k <= r; k++) { s=6w-'; V  
if (a < b) { k}BNFv8  
data[k] = temp[i++]; /fD)/x  
a = temp; _2TIan}  
} else { ;~@2YPj  
data[k] = temp[j--]; 2L,e\]2Z  
b = temp[j]; PGybX:L  
} 6IvLr+I  
} 7?A}q mv  
} 3wr~P  
NZD X93  
/** _h.[I8xgYG  
* @param data o30PI  
* @param l v5*SoUOF  
* @param i 1.';:/~(  
*/ 51rM6 BT  
private void insertSort(int[] data, int start, int len) { `*~:n vU  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); doe[f_\  
} ]=pEs6%O3  
} 7lh%\  
} 5%W3&F6 %  
} <H 3}N!  
7{b|+0W  
堆排序: +ivz  
 ,{.&xJ$  
package org.rut.util.algorithm.support; LN7;Yr  
-m__I U  
import org.rut.util.algorithm.SortUtil; G q:7d]c~T  
)`U T#5  
/** !E*-\}[  
* @author treeroot Pajr`gU  
* @since 2006-2-2 u]oS91  
* @version 1.0 8..itty  
*/ eDy}_By^  
public class HeapSort implements SortUtil.Sort{ 9,9( mbWJv  
21;n0E  
/* (non-Javadoc) l,d8% \  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZkK +?:9  
*/ J"SAA0)@  
public void sort(int[] data) { FS20OD  
MaxHeap h=new MaxHeap(); M r@M~ -  
h.init(data); #7g~U m%p  
for(int i=0;i h.remove(); +C+3DwN  
System.arraycopy(h.queue,1,data,0,data.length); "#p)Z{v"!  
} iPs()IN.O  
CE?R/uNo{  
private static class MaxHeap{ *rqih_j0  
)\s:.<?EQ  
void init(int[] data){ 4[5Z>2w  
this.queue=new int[data.length+1]; u2F 3>s  
for(int i=0;i queue[++size]=data; #_H=pNWe  
fixUp(size); FS']3uJ/  
} Xe*  L^8+  
} "Pu P J|  
tw.%'oJ7  
private int size=0; b^%4_[uRu  
O[8Lp?  
private int[] queue; yJgnw6>r2  
v[~ U*#i  
public int get() { wlkS+$<  
return queue[1]; 1ra}^H}  
} <x1(}x:u`  
uT=sDWD :  
public void remove() { &18} u~M  
SortUtil.swap(queue,1,size--); PAqziq.  
fixDown(1); Z &PwNr/  
} 8IVKS>  
file://fixdown O[-wm;_(=*  
private void fixDown(int k) { /.}&yRR  
int j; 5#iv[c  
while ((j = k << 1) <= size) { VGe/;&1h  
if (j < size %26amp;%26amp; queue[j] j++; wCkkfTO  
if (queue[k]>queue[j]) file://不用交换 y_a~>S  
break; kWr*+3Xq  
SortUtil.swap(queue,j,k); n RXf\*"3  
k = j; (3 _2h4O  
} *WOA",gZ  
} :k JSu{p  
private void fixUp(int k) { o fN|%g /  
while (k > 1) { ##FN0|e&  
int j = k >> 1; $3FFb#r  
if (queue[j]>queue[k]) f)*}L?  
break; *BSL=8G{  
SortUtil.swap(queue,j,k); Kr8p:$D};  
k = j; `< VoZ/v  
} rj,Sk~0Q  
} 8)sqj=  
Yr[1-Oy/k  
} <]"aP1+C  
:e gSW2"5S  
} siOeR@> X  
Q%@l`V)Rs  
SortUtil: 8 v&5)0u  
ZfMJU  
package org.rut.util.algorithm; F[Peil+|`  
fv)-o&Q#  
import org.rut.util.algorithm.support.BubbleSort; ,A_itRHH  
import org.rut.util.algorithm.support.HeapSort; v6iV#yz3(  
import org.rut.util.algorithm.support.ImprovedMergeSort; Q:tW LVE#0  
import org.rut.util.algorithm.support.ImprovedQuickSort; 6 )Oe]{-  
import org.rut.util.algorithm.support.InsertSort; sHAzg^n}r  
import org.rut.util.algorithm.support.MergeSort; V_0e/7}Ya  
import org.rut.util.algorithm.support.QuickSort; II),m8G  
import org.rut.util.algorithm.support.SelectionSort; >6(nW:I0y  
import org.rut.util.algorithm.support.ShellSort; +-xA/nU.c  
1{"e'[ L  
/** /eZA AH  
* @author treeroot g pO@xk$  
* @since 2006-2-2 *}yW8i}36  
* @version 1.0 e}7qZ^  
*/ pcL02W|J  
public class SortUtil { G!%1<SLi.  
public final static int INSERT = 1; I'J=I{p*  
public final static int BUBBLE = 2; "i9$w\lm  
public final static int SELECTION = 3; #B>Hq~ vrC  
public final static int SHELL = 4; /k7`TUK  
public final static int QUICK = 5; NjL,0Bp  
public final static int IMPROVED_QUICK = 6; 6nxf <1  
public final static int MERGE = 7; y8 `H*s@  
public final static int IMPROVED_MERGE = 8; *bwLi h!}H  
public final static int HEAP = 9; 3wa }p^   
UPLr[ >Q#  
public static void sort(int[] data) { ,]Hn*\@p[c  
sort(data, IMPROVED_QUICK); Jw9|I)H  
} G+}|gG8  
private static String[] name={ :0#!=  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" =q>eoXp  
}; H.Pts>3r(  
l6a,:*_  
private static Sort[] impl=new Sort[]{ QNn$`Qz.  
new InsertSort(), 3"&6rdF\jB  
new BubbleSort(), `N2zeFG  
new SelectionSort(), !MQo= k  
new ShellSort(), Qp%kX@Z'  
new QuickSort(), 5AQ $xm4  
new ImprovedQuickSort(), 'J+Vw9 s7  
new MergeSort(), <A+Yo3|7  
new ImprovedMergeSort(), 82>zu}  
new HeapSort() 5Sk87o1E(d  
}; F5&4x"c  
5 LXK#+Z  
public static String toString(int algorithm){ O!uX:TE|Q  
return name[algorithm-1]; N'|zPFk g  
} /q(+r5k \  
DKYrh-MN  
public static void sort(int[] data, int algorithm) { Fb[<YX"  
impl[algorithm-1].sort(data); F|Jo|02  
} eEupqOF*:W  
R6CxNPRJ  
public static interface Sort { aRg- rz  
public void sort(int[] data); 6-<,1Q'D  
} yn4Xi@9Pri  
wGAN"K:e  
public static void swap(int[] data, int i, int j) { &!Y^DR/  
int temp = data; ld`oIEj!P_  
data = data[j]; Uu8Z2M  
data[j] = temp; Cv~t~  
} Ca]vK'(  
} aCy2 .Qn  
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