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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。 A 'Q nL  
插入排序: 9tW=9<E  
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package org.rut.util.algorithm.support; F8\nAX  
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import org.rut.util.algorithm.SortUtil; nyZUf{:  
/** [jD.l;jF  
* @author treeroot vwZrvjP2  
* @since 2006-2-2 -?A,N,nnX  
* @version 1.0 2d,q?VH$  
*/ je^!W?U4<  
public class InsertSort implements SortUtil.Sort{ k{/2vV[`]  
{xm^DT  
/* (non-Javadoc) +gG6(7&+=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V@0Z\&  
*/ QMGMXa   
public void sort(int[] data) { S C8r.  
int temp; 7b,5*]oZ  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); : QK )Ym  
} qwlIz/j  
} 7|A9  
} D\~*| J  
RcUKe,  
} E6iUa'  
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冒泡排序: o(,u"c/Or  
ncEOz1u  
package org.rut.util.algorithm.support; {L[n\h.4.  
J?\z{ ;qa  
import org.rut.util.algorithm.SortUtil; x[Xj[O  
jP{LMmV  
/** C3Mr)  
* @author treeroot 5B [kZ?>  
* @since 2006-2-2 a'f0Wv0%"  
* @version 1.0 @za X\  
*/ $7{|  
public class BubbleSort implements SortUtil.Sort{ ;><9R@0  
 g?qh  
/* (non-Javadoc) U*G9fpVy  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [vuqH:Ln  
*/ K)|#FRPM u  
public void sort(int[] data) { 6{rH|Z  
int temp; $?^#G8J  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ?@"B:#l  
if(data[j] SortUtil.swap(data,j,j-1); #GBe=tm\K  
} CD\k.  
} ]XX8l:+  
} BJgg-z{Y  
} IS; F9{  
[KIK}:  
} -G<$wh9~3  
l4oI5)w  
选择排序: @\,WJmW  
V j\1 HQ  
package org.rut.util.algorithm.support; :eQ?gM!,  
>b>3M'  
import org.rut.util.algorithm.SortUtil; ='1J&w~7  
:IFTiq5a;  
/** GdFTKOq  
* @author treeroot "]}+QK_  
* @since 2006-2-2 ipB*]B F[  
* @version 1.0 Las4ux[_  
*/ B;A^5~b  
public class SelectionSort implements SortUtil.Sort { ][8ZeM9&p  
Xp <RG p7E  
/* wv>uT{g#  
* (non-Javadoc) X4emhB  
* =4z:Df  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _ukKzY  
*/ 5b9v`6Kq  
public void sort(int[] data) { -(FVTWi0  
int temp; \BC|`)0h  
for (int i = 0; i < data.length; i++) { h>,yqiY4p  
int lowIndex = i; k,>sBk 8  
for (int j = data.length - 1; j > i; j--) { A~ugx~S0  
if (data[j] < data[lowIndex]) { .YquOCc(  
lowIndex = j; \>NjeMuWU  
} j%R}  
} )--v> *,V  
SortUtil.swap(data,i,lowIndex); ag*RQ  
} 8fzmCRFH  
} >Z k$q~'+  
Km2ppGLNn  
} X%7Y\|  
>jjuWO3T  
Shell排序: @DYxxM-  
@&;y0N1xo  
package org.rut.util.algorithm.support; k~WX6rEJ  
AY['!&T  
import org.rut.util.algorithm.SortUtil; "(/ 1]EH`  
(,eH*/~/  
/** mjbr}9  
* @author treeroot \HFeEEKH  
* @since 2006-2-2 g+gHIb7{  
* @version 1.0 (q+U5Ls6  
*/ 0eY$K7 U  
public class ShellSort implements SortUtil.Sort{ *V(TNLIh;  
:_YpS w<Q  
/* (non-Javadoc) J2 _DP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T_CYSS|fX  
*/ s$e0;C!D  
public void sort(int[] data) { @)mH"u!(7  
for(int i=data.length/2;i>2;i/=2){ !n4p*<Y6  
for(int j=0;j insertSort(data,j,i); kQXtO)  
} gio'_X  
} ^YzFEu$  
insertSort(data,0,1); 6dO )]  
} o >bf7+D  
Eh;SH^&6  
/** !h&A^sAc  
* @param data (v*$ExF  
* @param j 9,y*kC  
* @param i #"%=7(  
*/ _A%} >:q  
private void insertSort(int[] data, int start, int inc) { O.S(H1z<G  
int temp; `i0RLGze  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); '7}s25[{\  
} z8+3/jLN0B  
}  Z+ [Nco  
} (NUwkAO M}  
'M2Jw8i  
} UX=JWb_uGm  
'S<ebwRd=  
快速排序: TfK$tTkM  
N?0T3-/K  
package org.rut.util.algorithm.support; ?1 $.^  
@qH{;  
import org.rut.util.algorithm.SortUtil; H"f%\'  
?g2Wu0<  
/** Gc}d#oo*k  
* @author treeroot aloP@U/\Sn  
* @since 2006-2-2 D^P_3 B+  
* @version 1.0 O [GG<Um  
*/ <\@JbL*  
public class QuickSort implements SortUtil.Sort{ Kxb_9y0`r  
DPI iGRw  
/* (non-Javadoc) >_h*N H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vsg"!y@v  
*/ 4;8 Z?.  
public void sort(int[] data) { C#X|U2$  
quickSort(data,0,data.length-1); =if5$jE3  
}  qJ!&H  
private void quickSort(int[] data,int i,int j){ L2Uk/E  
int pivotIndex=(i+j)/2; TGu`r>N51  
file://swap W@jBX{k  
SortUtil.swap(data,pivotIndex,j); zZDa7 1>  
<T JUKznO  
int k=partition(data,i-1,j,data[j]); \M1-  
SortUtil.swap(data,k,j); 0}jB/Z_T  
if((k-i)>1) quickSort(data,i,k-1); DWZ!B7Ts  
if((j-k)>1) quickSort(data,k+1,j); q?'*T?|  
!Y/$I?13Z  
} !q!.OQ  
/** =rcqYPul0  
* @param data O#fGHI<43[  
* @param i X2!vC!4P?L  
* @param j 5F$ elW  
* @return \gy39xoW(  
*/ !]7r>NS>  
private int partition(int[] data, int l, int r,int pivot) { ve_TpP  
do{ IBr?6_\%"4  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 9.f/d4  
SortUtil.swap(data,l,r); n8#iL  
} d4F3!*@(  
while(l SortUtil.swap(data,l,r); ?"[b408-  
return l; 8@ck" LUzD  
} 82Dw,Cn  
Mp9wYM*  
} !},_,J~(|  
0|n1O)>J  
改进后的快速排序: 0dA'f0Uy\X  
7 7"'?  
package org.rut.util.algorithm.support; zl\mBSBx"  
(gZKR2hO  
import org.rut.util.algorithm.SortUtil; }6MHIr=o  
}$r/#F/Fn  
/** vL(7|K  
* @author treeroot Gb.r!W8  
* @since 2006-2-2 Va>~7  
* @version 1.0 _oxhS!.*  
*/ }8Tr M0q8  
public class ImprovedQuickSort implements SortUtil.Sort { ]Ec\!,54u  
k2o98bK&;  
private static int MAX_STACK_SIZE=4096; 8C3oj  
private static int THRESHOLD=10; +gh6eY8  
/* (non-Javadoc)  chW 1UE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y`!~JL*  
*/ 8V@ /h6-e,  
public void sort(int[] data) { {H{u[XR[z  
int[] stack=new int[MAX_STACK_SIZE]; nE#p Ry]  
gnF]m0LR  
int top=-1; ^c" wgRHc<  
int pivot; `Et)@{iP  
int pivotIndex,l,r; { [ QCuR  
zts%oIgV  
stack[++top]=0; HM ;9%rtO  
stack[++top]=data.length-1; +]P? ?`,R;  
1>bG]l1//  
while(top>0){ F1%-IBe  
int j=stack[top--]; \zCT""'i  
int i=stack[top--]; =n|n%N4Y  
/9<zG}:B  
pivotIndex=(i+j)/2; C5GO?X2  
pivot=data[pivotIndex]; ;:NW  
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SortUtil.swap(data,pivotIndex,j); ,,vl+Z <&  
YNV4w{>FD  
file://partition qV2aa9p+  
l=i-1; B*#lkMr  
r=j; t=\y|Idc  
do{ daS l.:1  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 45fk+#  
SortUtil.swap(data,l,r); zX{K\yp  
} *T0{ yI  
while(l SortUtil.swap(data,l,r); 57*`y'C W  
SortUtil.swap(data,l,j); O+hN?/>v  
^Rriu $\  
if((l-i)>THRESHOLD){ H7!j5^  
stack[++top]=i; A7,TM&  
stack[++top]=l-1; R,?7|x  
} U 1!6%x  
if((j-l)>THRESHOLD){ s 8O"U%  
stack[++top]=l+1; :^7/+|}9p  
stack[++top]=j; ]p C/6'  
} W=j  
7jP C{W  
}  >sk vg  
file://new InsertSort().sort(data); |c,,*^  
insertSort(data);  uaN0X"  
} (F9U`1~4  
/** -)_"7}|u5  
* @param data _GSl}\  
*/ ,x#5.Koz  
private void insertSort(int[] data) { qBL >C\V +  
int temp; #)hc^gIO&<  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); G*.}EoA  
} #5*|/LD  
} @*kQZRGK7  
} M-Gl".*f  
KneCMFy  
} uM|*y-4  
L} r#KfIb  
归并排序: O3H dPQ  
X}Heaqn  
package org.rut.util.algorithm.support; hJ[Z~PC\T0  
!Wn^B|  
import org.rut.util.algorithm.SortUtil; G}ZJ}5h  
;Gf,$dbWn  
/** 3Q'Q %2  
* @author treeroot Te&F2`vo  
* @since 2006-2-2 fHK`u'  
* @version 1.0 #qqIOjS^w  
*/ I6!~(ND7  
public class MergeSort implements SortUtil.Sort{ ?86q8E3;&  
A"Q6GM2;Io  
/* (non-Javadoc) l!z)gto  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~wtl\-cY  
*/ iK&s_}i:  
public void sort(int[] data) { "SGq$3D  
int[] temp=new int[data.length]; );X &J:-l+  
mergeSort(data,temp,0,data.length-1); -L=aZPW`M  
} >9F&x>~  
S+aXlb  
private void mergeSort(int[] data,int[] temp,int l,int r){ ;jC}.] _)w  
int mid=(l+r)/2; 4O}ZnE1[  
if(l==r) return ; t.0F  
mergeSort(data,temp,l,mid); ^lADq']  
mergeSort(data,temp,mid+1,r); x z5 V.  
for(int i=l;i<=r;i++){ XNODDH   
temp=data; `<}Q4p  
} dV_ClH &)  
int i1=l; ECq(i(  
int i2=mid+1; _J' _9M?>  
for(int cur=l;cur<=r;cur++){ AXbDCDA  
if(i1==mid+1) jx*jYil  
data[cur]=temp[i2++]; -.XICKz  
else if(i2>r) J@$h'YUF  
data[cur]=temp[i1++]; -qv*%O@  
else if(temp[i1] data[cur]=temp[i1++]; <0R$yB  
else 7Aj o9  
data[cur]=temp[i2++]; >/W  
} PHZ+u@AA6@  
} {,V.IDs8[  
%+BiN)R*x  
} ~MuD`a7#G  
s#phs `v  
改进后的归并排序: t]dtBt].:  
A5U//y![{  
package org.rut.util.algorithm.support; S}QvG&c  
\53(D7+  
import org.rut.util.algorithm.SortUtil; Ph{7S43  
=v-qao7xCV  
/** ."HDUo2D7  
* @author treeroot E]T>m!6  
* @since 2006-2-2 nd~cpHQR^  
* @version 1.0 zn!H&!8&  
*/ w +pK=R  
public class ImprovedMergeSort implements SortUtil.Sort { &d5n_:^  
K=S-p3\g  
private static final int THRESHOLD = 10; J3 Y-d7=|  
H] i.\2z  
/* b A/,{R  
* (non-Javadoc) /=o~7y  
* Pn&!C*,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G)<NzZo  
*/ x?5D>M/Y  
public void sort(int[] data) { {Y0Uln5u  
int[] temp=new int[data.length]; F?h{IH f  
mergeSort(data,temp,0,data.length-1); {0~ Sj%Ze  
} }K<% h  
I[P43>F3  
private void mergeSort(int[] data, int[] temp, int l, int r) { Ii*tux!S  
int i, j, k; 1W@ C]n4  
int mid = (l + r) / 2; k 5~#_D>  
if (l == r) Q:nBx[%  
return; 0j@nOj(3  
if ((mid - l) >= THRESHOLD) #ZzFAt  
mergeSort(data, temp, l, mid); W>^WNo3YQ$  
else yf 7Sz$Eq  
insertSort(data, l, mid - l + 1); ">-J+ST%  
if ((r - mid) > THRESHOLD) */8b)I}yY  
mergeSort(data, temp, mid + 1, r); OD;-0Bj  
else 2=?:(e9  
insertSort(data, mid + 1, r - mid); fv;3cxQp  
|<:Owd=  
for (i = l; i <= mid; i++) { U"SH fI:  
temp = data; ,}8|[)"  
} G0e]PMeFl  
for (j = 1; j <= r - mid; j++) { 06)B<  
temp[r - j + 1] = data[j + mid]; q4Rvr[  
} 1$+-?:i C  
int a = temp[l]; CP5vo-/)-  
int b = temp[r]; x-hr64WFK  
for (i = l, j = r, k = l; k <= r; k++) {  /y2)<{{I  
if (a < b) { ,RA;X  
data[k] = temp[i++]; jUtFDw  
a = temp; VXfp=JE  
} else { F'NX  
data[k] = temp[j--]; uD'GI  
b = temp[j]; u*W6fg/"  
} /Soc,PjZ  
} Bz7rf^H`Z  
} G@.TE7a2Z  
bi:TX<K+  
/** Ne!0`^`~  
* @param data .()|0A B&g  
* @param l 6jDHA3  
* @param i PN(P$6  
*/ 7{"urs7 T  
private void insertSort(int[] data, int start, int len) { 3zr95$Mt  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); t9C.|6X  
} XA1gV>SJ  
} ~4T:v _Q7g  
} ulA||  
} 3?n2/p 7=  
AlVB hR`  
堆排序: Q;h6F{i  
vV(?A  
package org.rut.util.algorithm.support; }=7? & b  
2:8p>^g=  
import org.rut.util.algorithm.SortUtil; CyHaFUbZ  
_NwB7@ e  
/** D#8uj=/%  
* @author treeroot z\kiYQ6kA  
* @since 2006-2-2 /Wx({N'h$  
* @version 1.0 U8||)  +  
*/ VGe OoS  
public class HeapSort implements SortUtil.Sort{ $\9M6k'  
CogN1,GJ  
/* (non-Javadoc) +N3f{-{"Yo  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X~o6Xkg  
*/ _Hp[}sv4)  
public void sort(int[] data) { G\PFh&  
MaxHeap h=new MaxHeap(); ]YF_c,Q  
h.init(data); y\C_HCU H  
for(int i=0;i h.remove(); $sfDtnRy  
System.arraycopy(h.queue,1,data,0,data.length); *vqr+jr9  
} 0t^Tm0RzH  
eBN!!Y:7  
private static class MaxHeap{ P {0iEA|k  
9f|+LN##  
void init(int[] data){ F<YXkG4 pO  
this.queue=new int[data.length+1]; ||}'  
for(int i=0;i queue[++size]=data; rFJPeK7  
fixUp(size); DI )!x {"  
} t ;-U  
} X<8   
mne?r3d  
private int size=0; #X`qkW.T<  
C1M @;  
private int[] queue; .7`c(9<  
S^z t>  
public int get() { p~evPTHnrX  
return queue[1]; \46 'j.  
} xIb"8,N  
->u}b?aF  
public void remove() { cH7Gb|,M  
SortUtil.swap(queue,1,size--);  yh'uH  
fixDown(1); kc:>[{9  
} [" PRxl  
file://fixdown YD@n8?~$$  
private void fixDown(int k) { b" PRa|]  
int j; {;2Gl$\r  
while ((j = k << 1) <= size) { D=^|6}  
if (j < size %26amp;%26amp; queue[j] j++; i^Ip+J+[  
if (queue[k]>queue[j]) file://不用交换 kp=wz0#  
break; ?]]7PEee*  
SortUtil.swap(queue,j,k); 0;/},B[A  
k = j; XD8Q2un  
} sWGc1jC?.F  
} GU,ztO.w3  
private void fixUp(int k) { ?E6 C|A$I  
while (k > 1) { cq0#~20  
int j = k >> 1; +\yQZ{4'@  
if (queue[j]>queue[k]) -"} mmTa*<  
break; Q|] 9  
SortUtil.swap(queue,j,k); mh :eUFe  
k = j; ^!j,d_)b!  
} ui!MQk+D9  
} `%<^$Ng;  
~6!TMVr  
} 5f- eWW]!  
tXg>R _\C  
} L Rn)  
6p)dO c3L  
SortUtil: VQ(l=k:}2  
i9=*ls^Cx  
package org.rut.util.algorithm; $8;`6o`  
D"vl$BX  
import org.rut.util.algorithm.support.BubbleSort; RK\$>KFE  
import org.rut.util.algorithm.support.HeapSort; nN*:"F/^  
import org.rut.util.algorithm.support.ImprovedMergeSort; av:9kPKm  
import org.rut.util.algorithm.support.ImprovedQuickSort; `;v5o4.`  
import org.rut.util.algorithm.support.InsertSort; *,y .%`o  
import org.rut.util.algorithm.support.MergeSort; 7@u:F?c  
import org.rut.util.algorithm.support.QuickSort; 8Ben}j)H  
import org.rut.util.algorithm.support.SelectionSort; =P)H3|AdIm  
import org.rut.util.algorithm.support.ShellSort; a bw7{%2  
d#Xt2   
/** (d ?sFwOt\  
* @author treeroot |<Rf^"T  
* @since 2006-2-2 ]dU/;8/%  
* @version 1.0 uk<JV*R=  
*/ T~G~M/  
public class SortUtil { tEl_a~s*3?  
public final static int INSERT = 1; a`E1rK'  
public final static int BUBBLE = 2; =&-+{txs  
public final static int SELECTION = 3; iRsK; )<  
public final static int SHELL = 4; '^ob3N/Y [  
public final static int QUICK = 5; xL#UMvZ>;h  
public final static int IMPROVED_QUICK = 6; +/|t8zFWs  
public final static int MERGE = 7; Bf+7;4-  
public final static int IMPROVED_MERGE = 8; s+7#TdhA  
public final static int HEAP = 9; UR' P,  
rL3 f%L  
public static void sort(int[] data) { G\ m`{jv  
sort(data, IMPROVED_QUICK); i8+[-mh  
} tO8<N'TD  
private static String[] name={ /5&' U!:+  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 90[?)s  
}; & G8tb>q<V  
#Ks2a):8  
private static Sort[] impl=new Sort[]{ N799@:.  
new InsertSort(), $^Z ugD  
new BubbleSort(), oJln"-M1nx  
new SelectionSort(), WJs2d73Qp  
new ShellSort(), 72akOx   
new QuickSort(), ])D39  
new ImprovedQuickSort(), 79G& 0 P\  
new MergeSort(), 6ntduXeNVh  
new ImprovedMergeSort(), ]zUvs6ksLG  
new HeapSort() TBr@F|RXiO  
}; d"~-D;  
{~a+dEz  
public static String toString(int algorithm){ 4O1[D? )`x  
return name[algorithm-1]; E(/M?>t-  
} 9TZ4ffXV*  
,#blY~h8^  
public static void sort(int[] data, int algorithm) { ffgb 3  
impl[algorithm-1].sort(data); O$, bNu/g  
} rJws#^ ]  
z]33_[G1U  
public static interface Sort { 1_V',0|`>  
public void sort(int[] data); :I/i"g7<  
} QsC6\Gt#  
 _7P#?:h  
public static void swap(int[] data, int i, int j) { rFl6xM;F  
int temp = data; n[tES6u  
data = data[j]; H;k-@J  
data[j] = temp; 9S! 2r  
} Di>B:=  
} /+g)J0u  
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