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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。 0uZL*4A+C  
插入排序: a)o-6  
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package org.rut.util.algorithm.support; @K=:f  
9Sb[5_Q  
import org.rut.util.algorithm.SortUtil; KbXENz&C  
/** OMY^'g%w  
* @author treeroot ln1QY"g  
* @since 2006-2-2 s)A=hB-V  
* @version 1.0 >D\jyd$wh&  
*/ 6_=t~9sY  
public class InsertSort implements SortUtil.Sort{ C:9a$  
j}`XF?2D  
/* (non-Javadoc) VYo2m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +|w%}/N  
*/ m=4hi(g  
public void sort(int[] data) {  LBIsj}e  
int temp; ^~7/hm:  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); j^T i6F>f  
} r%uka5@  
} #5 %\~ f  
} FJ+n- \  
G m~2s;/  
} 2(i@\dZCb<  
} %bP9  
冒泡排序: _SQQS67fu"  
mS9ITe M  
package org.rut.util.algorithm.support;  Z,"f2UJ  
#dj,=^1_14  
import org.rut.util.algorithm.SortUtil; d69synEw>k  
Gbwq rH+  
/** fG,)`[eD!_  
* @author treeroot m\.(-  
* @since 2006-2-2 2:jWO_V@  
* @version 1.0 6JB* brO  
*/ E4cPCQyeH  
public class BubbleSort implements SortUtil.Sort{ lzbAx  
bSkr:|A7  
/* (non-Javadoc) ])9|j  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VprrklZ  
*/ ]r(&hqdR  
public void sort(int[] data) { WbwS!F<au  
int temp; V|hr9  
for(int i=0;i for(int j=data.length-1;j>i;j--){ -Q MO*PY  
if(data[j] SortUtil.swap(data,j,j-1); GlOSCJZ  
} KBg5 _+l  
} QFg{.F?3q>  
} ~7$jW[i  
} 4> NmJrh  
oXgi#(y  
} ([ODmZHv  
h|{DIG3  
选择排序: CeINODcT  
=,J-D6J?  
package org.rut.util.algorithm.support; nr?|!gj  
m85H x1!p.  
import org.rut.util.algorithm.SortUtil; ~vscATQ  
{%BPP{OFk  
/** Yl`)%6'5|  
* @author treeroot (&!x2M  
* @since 2006-2-2 (7A-cC  
* @version 1.0 d",VOhW7)S  
*/ DEQ7u`6  
public class SelectionSort implements SortUtil.Sort { *%n(t+'q  
/4YxB,  
/* H{,qw%.|KA  
* (non-Javadoc) ^US ol/  
* 2I>`{#fV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &Vy.)0  
*/ aXgngw q  
public void sort(int[] data) { uhvn1"  
int temp; *q*$%H  
for (int i = 0; i < data.length; i++) { nC5]IYL|  
int lowIndex = i; :I(d-,C  
for (int j = data.length - 1; j > i; j--) { 1'!%$D  
if (data[j] < data[lowIndex]) { <T`&NA@%~$  
lowIndex = j; oR~s \Gt  
} ?#lHQT  
} 5I&Dk4v  
SortUtil.swap(data,i,lowIndex); E[Bj+mX9  
} T_ga?G<  
} {.r #j|  
 NArr2o2  
} CE7{>pl  
#b@ sV$  
Shell排序: [e7nW9\l  
8<=]4-X@  
package org.rut.util.algorithm.support; IqCh4y3  
]2rC n};  
import org.rut.util.algorithm.SortUtil; 6T6UIq  
8|~M!<  
/** l9naqb:iP  
* @author treeroot M:t"is  
* @since 2006-2-2 er.;qV'Wz6  
* @version 1.0 ,!QtViA7  
*/ xm0(U0 >  
public class ShellSort implements SortUtil.Sort{ Vx%!j&  
I_is3y0  
/* (non-Javadoc) q"u,r6ED  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7`SrqI&  
*/ c!a1@G  
public void sort(int[] data) { _Jn@+NoO  
for(int i=data.length/2;i>2;i/=2){ Rnw v/)  
for(int j=0;j insertSort(data,j,i); %+oV-o\ #A  
} =}%Q}aPp  
} kZ'wXtBYe  
insertSort(data,0,1); S\sy] 1*?$  
} <_yy0G  
-Yg?@yt  
/** =kb/4eRg  
* @param data ]<k+a-Tt  
* @param j h* V~.H  
* @param i 4U*CfdZZ  
*/ ) ):w`^6  
private void insertSort(int[] data, int start, int inc) { ({mlA`d]  
int temp; NY/-9W5T4  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); NBD1k;  
} p7Z/%~0v:  
} 5z Pn-1uW  
} Q6r7UM  
>/'/^h  
} ]3d5kf  
iCy$ rC  
快速排序: ~H:.&'E  
W)Mc$`nX  
package org.rut.util.algorithm.support; ?ajVf./Ja  
\{54mM~  
import org.rut.util.algorithm.SortUtil; u@T,8  
EMf"rGXu(  
/** w0 1u~"E  
* @author treeroot (^$SM uC  
* @since 2006-2-2 il7gk<  
* @version 1.0 ,"f2-KC4h  
*/ >2mV {i&  
public class QuickSort implements SortUtil.Sort{ fJ;1ii~  
pg3h>)$/  
/* (non-Javadoc) \9 k3;zw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >g,i"Kg  
*/ slYC\"$  
public void sort(int[] data) { $$eBr8  
quickSort(data,0,data.length-1); Wql,*|  
} IJBIO>Z/  
private void quickSort(int[] data,int i,int j){ kyL]4:@W`  
int pivotIndex=(i+j)/2; O+=C8  
file://swap > QK"r7f/  
SortUtil.swap(data,pivotIndex,j); ?&bB?mg\  
<[V1z=Eo/]  
int k=partition(data,i-1,j,data[j]); Ph17(APt,Q  
SortUtil.swap(data,k,j); -+W E9  
if((k-i)>1) quickSort(data,i,k-1); '~E=V:6  
if((j-k)>1) quickSort(data,k+1,j); c\VD8 :  
tJpK/"R'  
} 0W,.1J2*  
/** ddEV@2F  
* @param data oG=4&SQ  
* @param i T&->xe f=  
* @param j yK0iW  
* @return i'z (`"  
*/ uHPd!# ]  
private int partition(int[] data, int l, int r,int pivot) { u2cDSRrqT  
do{ Ub`vf4EB  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); w~>tpkUB  
SortUtil.swap(data,l,r); c"pu"t@/Z  
} gb/<(I )  
while(l SortUtil.swap(data,l,r); Z<`:xFy(  
return l; cQq78Lo  
} #NWS)^&1b  
qsdgG1<  
} |)%;B%  
V(0V$&qipc  
改进后的快速排序: N^zFKDJG  
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package org.rut.util.algorithm.support; RU% 4~WC  
lMe+.P|  
import org.rut.util.algorithm.SortUtil; S^nI=HTm  
>~})O&t  
/** Ly]J-BTe  
* @author treeroot 0lS=-am  
* @since 2006-2-2 Nq#B4Zx  
* @version 1.0 {tUxRX  
*/ =$#=w?~%  
public class ImprovedQuickSort implements SortUtil.Sort { rV B\\  
N;* wd<  
private static int MAX_STACK_SIZE=4096; ->2m/d4a  
private static int THRESHOLD=10; [p_<`gU?  
/* (non-Javadoc) 2 @t?@,c  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $J*lD -h-  
*/ @gk{wh>c  
public void sort(int[] data) { [n&SA]a  
int[] stack=new int[MAX_STACK_SIZE]; P9 qZjBS  
m[tsG=XBN  
int top=-1; SEIJ+u9XsA  
int pivot; yw*| HT  
int pivotIndex,l,r; Y/y`c-VO  
KB8_yo{y  
stack[++top]=0; yo :63CPP  
stack[++top]=data.length-1; F-GH?sfvi  
[m(n-Mu F  
while(top>0){ 6@Ir|o  
int j=stack[top--]; 0 D&-BAzi  
int i=stack[top--]; b ; U  
+Os9}uKf  
pivotIndex=(i+j)/2; t<MO~_`!  
pivot=data[pivotIndex]; bCV_jR+  
bOD] `*q  
SortUtil.swap(data,pivotIndex,j); hZ-?-F?*@  
w6|l ~.$=  
file://partition Jn"ya^~  
l=i-1; ^IO\J{U{"x  
r=j; \%QA)T%  
do{ }B&+KO)  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 9ZI^R/*Kc  
SortUtil.swap(data,l,r); #M|q}jA|  
} K,dEa<p  
while(l SortUtil.swap(data,l,r); 8p PQ   
SortUtil.swap(data,l,j); h=dFSK?*D  
?s[!JeUA  
if((l-i)>THRESHOLD){ #aIV\G  
stack[++top]=i; (B Ig  
stack[++top]=l-1; 8JU{]Z!G<;  
} [vOk=  
if((j-l)>THRESHOLD){ :]9CdkaU  
stack[++top]=l+1; .-GC,&RO  
stack[++top]=j; S>y}|MG  
} N[kl3h%q  
lCGEd  3  
} %:\GYs(Y  
file://new InsertSort().sort(data); t4+bRmS`_  
insertSort(data); nf,Ez  
} m3=Cg$n  
/** [midNC+,  
* @param data p']{WLDj2  
*/ .@ @&q4= &  
private void insertSort(int[] data) { ~=?^v[T1  
int temp; dY`P  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); JN3&(t  
} #Ht;5p>5  
} NGmXF_kqN  
} o':K4r;  
IgPU^?sp  
} \ \gAa-}:  
-d^c!Iu|  
归并排序: o&Y R\BI/  
|N:kf&]b  
package org.rut.util.algorithm.support; '}F..w/  
A\|:hzu+  
import org.rut.util.algorithm.SortUtil; ?~ /_&=NSx  
LrdX^_,nt  
/** 5Vlm?mPU  
* @author treeroot hHyB;(3~  
* @since 2006-2-2 Gk!CU"`sP  
* @version 1.0 pd.5  
*/ g:Fo7*i  
public class MergeSort implements SortUtil.Sort{ 5EL&?\e  
Vw5Pgtx  
/* (non-Javadoc) AA[?a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]P)2Q!X  
*/ QG5)mIJ  
public void sort(int[] data) { JY$+<`XM  
int[] temp=new int[data.length]; 3]67U}`  
mergeSort(data,temp,0,data.length-1); w$ jq2?l  
} Nzl`mx16  
Kc+TcC  
private void mergeSort(int[] data,int[] temp,int l,int r){ :a_MT  
int mid=(l+r)/2; C^*}*hYk$  
if(l==r) return ; -+kTw06_C  
mergeSort(data,temp,l,mid); &;%, Axc  
mergeSort(data,temp,mid+1,r); n\u3$nGL1`  
for(int i=l;i<=r;i++){ C5=m~  
temp=data; [S?`OF12  
} Og?P5&C"9D  
int i1=l; `Wp y6o  
int i2=mid+1; Nl9}*3r  
for(int cur=l;cur<=r;cur++){ +q] kpkG!  
if(i1==mid+1) U|v@v@IBA  
data[cur]=temp[i2++]; z;\,Dt  
else if(i2>r) Aq_?8Cd  
data[cur]=temp[i1++]; D{M& >.  
else if(temp[i1] data[cur]=temp[i1++]; (VBO1f  
else xOKf|  
data[cur]=temp[i2++]; Xvxj-\ -  
} GP_%. fO\M  
} ;9hS_%ldX4  
_ _[bKd.  
} _m3#g1m{  
% E 8s>D  
改进后的归并排序: V@\A<q%jTs  
e%^PVi  
package org.rut.util.algorithm.support; _7,4C?  
ltOsl-OpR  
import org.rut.util.algorithm.SortUtil; G<`6S5J>hr  
2bxW`.fa  
/** a ~F\ 2`Q  
* @author treeroot XRXQ 7\n  
* @since 2006-2-2 (*Q8!"D^6  
* @version 1.0 a 9Kws[  
*/ ~> S? m;  
public class ImprovedMergeSort implements SortUtil.Sort { Z=^~]Mfa  
r(I&`kF<  
private static final int THRESHOLD = 10; q=;U(,Y  
`]5t'Ps  
/* 6d;RtCENo  
* (non-Javadoc) '@WS7`@-y  
* Je=k.pO1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _p0G8  
*/ 3mT6HGSKR  
public void sort(int[] data) { L+.-aB2!d  
int[] temp=new int[data.length]; UGQH wz  
mergeSort(data,temp,0,data.length-1); `ex>q  
} DxxY<OkN  
3Cg0^~?6-  
private void mergeSort(int[] data, int[] temp, int l, int r) { _o{w<b&  
int i, j, k; rM)#}eZK!  
int mid = (l + r) / 2; j "e]Ui  
if (l == r) JF(&+\i<p  
return; B }  
if ((mid - l) >= THRESHOLD) =A<a9@N}N  
mergeSort(data, temp, l, mid); DVw 04ay%  
else =|IY[2^  
insertSort(data, l, mid - l + 1); 4Vv$bbu+  
if ((r - mid) > THRESHOLD) W4]jx ]  
mergeSort(data, temp, mid + 1, r); g.COKA  
else b21@iW  
insertSort(data, mid + 1, r - mid); iV.j!H7o  
'J_6SD  
for (i = l; i <= mid; i++) { :F pt>g  
temp = data; [wM]w  
} +%)bd  
for (j = 1; j <= r - mid; j++) { >44,Dp]  
temp[r - j + 1] = data[j + mid]; 8WLBq-]G  
} 3W55 m@w  
int a = temp[l]; a+P^?N  
int b = temp[r]; O{wt0 \P  
for (i = l, j = r, k = l; k <= r; k++) { 'h`)6{  
if (a < b) { H+ 7Fw'u  
data[k] = temp[i++]; YeVkX{y  
a = temp; gS.,V!#t  
} else { ? ;$f"Wl  
data[k] = temp[j--]; 73kI%nNB  
b = temp[j]; rl:D>t(:.  
} eI=:z/pd  
} R|-!5J4h  
} A(ZtA[G  
;oVFcZSA  
/** @'JA3V}  
* @param data >5j&Q#Bu  
* @param l yu$xQ~ o  
* @param i B\6%.R  
*/ DB.)/(zWQ  
private void insertSort(int[] data, int start, int len) { ~iU@ns|g\  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); d5qGTT ~a  
} ?d@zTAI  
} ""x>-j4  
} 6:AZZF1  
} O.$OLK;v  
y1kI^B  
堆排序: <4jqF 4 W  
W|V9:A  
package org.rut.util.algorithm.support; h]p$r`i7  
4/ Xu,pT  
import org.rut.util.algorithm.SortUtil; `0Xs!f  
]ujXPK=t  
/** NJPp6RZ%  
* @author treeroot 58gkE94  
* @since 2006-2-2 YI+o:fGC5  
* @version 1.0 J6g:.jsK!  
*/ ]TSzT"_r~~  
public class HeapSort implements SortUtil.Sort{ #P;vc{ Iq  
@8U8>'zDE  
/* (non-Javadoc) F 8 gw3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nD#uOep9  
*/ _TjRvILC  
public void sort(int[] data) { "~6IjW*/  
MaxHeap h=new MaxHeap(); RBV*e9P%  
h.init(data); I4MZ JAYk  
for(int i=0;i h.remove(); !'8jy_<9  
System.arraycopy(h.queue,1,data,0,data.length); Z>J3DH  
} 8eD/9PD=F  
s1 (UOd7}  
private static class MaxHeap{ -[ xbGSj{  
)* Rr5l /l  
void init(int[] data){ ivJTE  
this.queue=new int[data.length+1]; VMJK9|JC[  
for(int i=0;i queue[++size]=data; ~A,(D-  
fixUp(size); GLa_[9 "  
} KKM!($A  
} +p0Y*.  
W>J1JaO  
private int size=0; osI0m7ws:  
QHw{@*  
private int[] queue; bipA{VU  
|jyD@Q,4  
public int get() { xH{V.n&v  
return queue[1]; 7!^Zsp^+  
} KBwY _  
#s|,o Im  
public void remove() { RKwuvVI  
SortUtil.swap(queue,1,size--); e/F+Tf  
fixDown(1); zd?uMq;w  
} Jek3K&  
file://fixdown |#x]/AXa0/  
private void fixDown(int k) { # &Z1d(!  
int j; c{wob%!>  
while ((j = k << 1) <= size) { %DuSco"  
if (j < size %26amp;%26amp; queue[j] j++; ky@DH(^>  
if (queue[k]>queue[j]) file://不用交换 `a]feAl  
break; CAbT9W z&  
SortUtil.swap(queue,j,k); Pt?d+aBtV  
k = j; $QJ,V~  
} 4\(|V fy  
} \v p^[,SI  
private void fixUp(int k) { dyuT-.2  
while (k > 1) { #E@X'jwu  
int j = k >> 1; 1-?TjR  
if (queue[j]>queue[k]) 0{sYD*gK]  
break; >3)AO04=;  
SortUtil.swap(queue,j,k); d2tJ=.DI  
k = j; q.v_?X<_  
} ?tf<AZ=+^L  
} |eH*Q%M  
tz_WxOQ0  
} 9~yp =JOV@  
a\Dw*h?b~  
} I_On0@%T5b  
bh UghHT  
SortUtil: ;#S4$wISw`  
!E9A=u{  
package org.rut.util.algorithm; LGPg\g`  
1 eMaKT_=  
import org.rut.util.algorithm.support.BubbleSort; !k=~a]  
import org.rut.util.algorithm.support.HeapSort; -ZBSkyMGy  
import org.rut.util.algorithm.support.ImprovedMergeSort; WZ^u%Z  
import org.rut.util.algorithm.support.ImprovedQuickSort; +3k#M[Bn}  
import org.rut.util.algorithm.support.InsertSort;  f%c-  
import org.rut.util.algorithm.support.MergeSort; "Sd2VSLg  
import org.rut.util.algorithm.support.QuickSort; 4Q^i"jT  
import org.rut.util.algorithm.support.SelectionSort; <77v8=as5  
import org.rut.util.algorithm.support.ShellSort; ,=y8[(h  
m'5rzZP  
/** <R8!fc{`  
* @author treeroot lBfG#\rdW~  
* @since 2006-2-2 J]qx4c  
* @version 1.0 hdurT  
*/ ~A-VgBbU>_  
public class SortUtil { ~+Ows  
public final static int INSERT = 1; x).`nZ1  
public final static int BUBBLE = 2; bTc'E#  
public final static int SELECTION = 3; ,[)f-FmcU  
public final static int SHELL = 4; uqK[p^{  
public final static int QUICK = 5; [C(>e0r  
public final static int IMPROVED_QUICK = 6; r+;AEN48  
public final static int MERGE = 7; JsbH'l  
public final static int IMPROVED_MERGE = 8; t$5)6zG  
public final static int HEAP = 9; D8wZC'7  
I>45xVA  
public static void sort(int[] data) { q?Av5TFf  
sort(data, IMPROVED_QUICK); 't un;Y  
} Ub<^;Du5  
private static String[] name={ <!I^xo [  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" dJUI.!hv;  
}; `&qeSEs\  
?\Lf=[  
private static Sort[] impl=new Sort[]{ c9axzg UA  
new InsertSort(), n]J;BW& Av  
new BubbleSort(), 7wwlZ;w  
new SelectionSort(), !-Md+I_  
new ShellSort(), `#>JRQ=  
new QuickSort(), 4@*`V  
new ImprovedQuickSort(), 9$e6?<`(Y  
new MergeSort(), @-5V~itW  
new ImprovedMergeSort(), - u'5xn7  
new HeapSort() L$s ;tJ   
}; h|Udw3N1L  
&Un^ _M  
public static String toString(int algorithm){ Pqb])-M9p  
return name[algorithm-1]; ]>k>Z#8E*  
} 7="I;  
J-+p]xG  
public static void sort(int[] data, int algorithm) { /d]{ #,k  
impl[algorithm-1].sort(data); `=rDB7!$yL  
} !Zma\Ip  
 TrmU  
public static interface Sort { wNhtw'E8  
public void sort(int[] data); zHW}A `Rz  
} ,.PmH.zjmR  
?ZlN$h^  
public static void swap(int[] data, int i, int j) { CAV Q[r5y  
int temp = data;  *"K7<S[  
data = data[j]; 'Z ,T,zW  
data[j] = temp; JBvP {5  
} )6,Pmq~)  
} Ncle8=8  
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