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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。 # O<,  
插入排序: pg0Sq9qCN  
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package org.rut.util.algorithm.support; .! 'SG6 q  
P]cC2L@Vbi  
import org.rut.util.algorithm.SortUtil; f(SK[+aqW  
/** ^W#161&  
* @author treeroot /hF@Xh%hY  
* @since 2006-2-2 #X 1 GL  
* @version 1.0 1/\JJ\  
*/ D[i?T3i  
public class InsertSort implements SortUtil.Sort{ k7ye,_&>  
F .h A.E  
/* (non-Javadoc) C!X"0]@FA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "@ 1+l&  
*/ P z< \q;  
public void sort(int[] data) { r{mj[N'@  
int temp; Te d1Ky2O  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 1buVV]*~  
} /Pv dP#!  
} -F7P$/9  
} &d sXK~9M>  
3%~c\naD?O  
} 2p|ed=ly%  
6Cj$x.-K  
冒泡排序: ,azBk`$iQr  
K6Z/  
package org.rut.util.algorithm.support; [ikW3 '99,  
}j`#s  
import org.rut.util.algorithm.SortUtil; Wd>gOE  
eXA@J[- M:  
/** ,II-:&H  
* @author treeroot  Q'~3Ik  
* @since 2006-2-2 ihp>cl?  
* @version 1.0 ;s\ck:Xg  
*/ .o(S60iH!(  
public class BubbleSort implements SortUtil.Sort{ )dh_eqnX  
Um%$TGw5  
/* (non-Javadoc) wN]]t~K)Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v{8W+  
*/ XMlcY;W  
public void sort(int[] data) { PN"SBsc*j-  
int temp; 9.>he+  
for(int i=0;i for(int j=data.length-1;j>i;j--){ hM nJH_siY  
if(data[j] SortUtil.swap(data,j,j-1); zvOSQxGQ  
} BTnrgs#[  
} }cO}H2m  
} ,V &RpKek  
} UPcx xtC  
 ovsI2  
} ana?;NvC  
v5A8"&Jr  
选择排序: _>u0vGF-  
,V`[;~49  
package org.rut.util.algorithm.support; gJYX  
<IwfiI3y  
import org.rut.util.algorithm.SortUtil; ov|/=bzro  
d>hLnz1O  
/** m\eYm;R Vj  
* @author treeroot ^3lEfI<pBm  
* @since 2006-2-2 Dssecc'  
* @version 1.0 D:#e;K  
*/ i1 ^#TC$x  
public class SelectionSort implements SortUtil.Sort { + 0 |d2_]E  
eb=#{  
/* Al^h^ 9tJ  
* (non-Javadoc) q~6((pWi|  
* 9-hVlQ~|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JAU:Wqlg1  
*/ I%tJLdL  
public void sort(int[] data) { VQ/Jz5^  
int temp; m!sMr^W  
for (int i = 0; i < data.length; i++) { dPb@[k  
int lowIndex = i; h ngdeGa  
for (int j = data.length - 1; j > i; j--) { dU.H9\p  
if (data[j] < data[lowIndex]) { '[`pU>9  
lowIndex = j; l g43  
} ";*Iwd*V  
} p -wEPC0  
SortUtil.swap(data,i,lowIndex); Y N*"q'Yz_  
} {Ax{N  
} vJfj1 f  
+&qj`hA-b  
} n+H);Dg<8  
&vV_,$  
Shell排序: j7v?NY  
<,huajQs  
package org.rut.util.algorithm.support; a9niXy}a(  
1zWEK]2.R  
import org.rut.util.algorithm.SortUtil; -=VGXd  
FWl'='5L  
/** 3}V -'!  
* @author treeroot lAA s/  
* @since 2006-2-2 , Vr'F  
* @version 1.0 Hi Pd|D  
*/ 09w<@#  
public class ShellSort implements SortUtil.Sort{ \Ss6F]K]  
/p7-D;  
/* (non-Javadoc) Fpckb18}(O  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6R';[um?q  
*/ V^E.9fs,  
public void sort(int[] data) { P,ud"F=r  
for(int i=data.length/2;i>2;i/=2){ 3%DDN\q\u  
for(int j=0;j insertSort(data,j,i); /d-d8n  
} JVt(!%K}&  
} (^ ;Fyf/  
insertSort(data,0,1); 5$Da\?Fpn  
} e sDd>W  
5@< D6>6  
/** *Rj(~Q/t  
* @param data `&!J6)OJ  
* @param j FCPi U3  
* @param i 61=D&lb  
*/ iz5WWn^  
private void insertSort(int[] data, int start, int inc) { j/PNi@  
int temp; %VmHw~xyF:  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); XXA1%Lw%  
} Y!nxHRE  
}  b@m\ca  
} lCC(N?%Q  
7-`iI(N<  
} X0e#w?  
8e*1L:oB!  
快速排序: uSU[Y,'x  
V Mb r@9  
package org.rut.util.algorithm.support; / +9o?Kxya  
p`}'-A|@  
import org.rut.util.algorithm.SortUtil; & U6bOH%P  
i_kKE+Q  
/** E[E7GsmqV  
* @author treeroot +`s%-}-r  
* @since 2006-2-2 o:8*WCiqrN  
* @version 1.0 R1lC_G]  
*/ 2c4x=%  
public class QuickSort implements SortUtil.Sort{ @EV*QC2l;Y  
i1k#WgvZR  
/* (non-Javadoc) :$gR >.`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ubZcpqm?Q  
*/ I|oS`iLl$  
public void sort(int[] data) { rj> _L  
quickSort(data,0,data.length-1); SFQYrY  
} Hd9vS"TN]  
private void quickSort(int[] data,int i,int j){ [/iT D=O,  
int pivotIndex=(i+j)/2; /n&Y6@W  
file://swap 1w/Ur'8we  
SortUtil.swap(data,pivotIndex,j); ()+PP}:$A  
g7r_jj%ow  
int k=partition(data,i-1,j,data[j]); #FQkwX'g  
SortUtil.swap(data,k,j); ;R x Rap  
if((k-i)>1) quickSort(data,i,k-1); i9 Tq h  
if((j-k)>1) quickSort(data,k+1,j); ~.H*"  
n13#}i {tm  
} oR_qAb  
/** H:jx_  
* @param data D8S3YdJ  
* @param i X:1&Pdi  
* @param j ,2C{X+t  
* @return MR{JMo=r  
*/ TC$)::C1  
private int partition(int[] data, int l, int r,int pivot) { WXzSf.8p|  
do{ HX&G  k  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 0`D` Je<t  
SortUtil.swap(data,l,r); |{en) {:  
} ~?#B(t  
while(l SortUtil.swap(data,l,r); #lld*I"d  
return l; S pqbr@j  
} HZDeQx`*s  
ccPTJ/%$  
} k~,({T<  
{Jx-Zo>'  
改进后的快速排序:  <RaM@E  
7yM"G$  
package org.rut.util.algorithm.support; eGF+@)K1"  
_hz}I>G@B  
import org.rut.util.algorithm.SortUtil; _9<nM48+t  
5zf bI  
/** K\3N_ztu  
* @author treeroot 6";ew:Ih^  
* @since 2006-2-2 g,61'5\  
* @version 1.0 9>I&Z8J$M  
*/ CNkI9>L=W`  
public class ImprovedQuickSort implements SortUtil.Sort { 1](PuQm7+  
T>cO{I  
private static int MAX_STACK_SIZE=4096; 3<%ci&B  
private static int THRESHOLD=10; >=+: lD  
/* (non-Javadoc) yPXa  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \Hs*46@TC  
*/ %p t^?  
public void sort(int[] data) { wS"`~Ql_  
int[] stack=new int[MAX_STACK_SIZE];  2.>aL  
BJNZH#"  
int top=-1; MX )mm^A  
int pivot; 9m+ejTK{U  
int pivotIndex,l,r; 92 oUQ EK  
<<M1:1  
stack[++top]=0; o0}kRL  
stack[++top]=data.length-1; FD[o94`%  
ARd*c?Om  
while(top>0){ lh`ZEvt  
int j=stack[top--]; z55g'+Kab  
int i=stack[top--]; q*'-G]tH=  
.:I^O[k  
pivotIndex=(i+j)/2; \WPy9kRU  
pivot=data[pivotIndex]; D_)N!,i  
4o69t  
SortUtil.swap(data,pivotIndex,j); $No^\.mV  
Tf{lH9ca$  
file://partition me+u"G9I;  
l=i-1; 4L_AhX7  
r=j; m8,jVR  
do{ l0K_29^  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ' TO/i:{\  
SortUtil.swap(data,l,r); C1w6[f1+  
} -2qI2Z  
while(l SortUtil.swap(data,l,r); O[j$n  
SortUtil.swap(data,l,j); &ev#C%Nu  
:2*0Jh3_  
if((l-i)>THRESHOLD){ l[Ko>  
stack[++top]=i; AK//]   
stack[++top]=l-1; A)80qx:  
} 1deK}5'  
if((j-l)>THRESHOLD){ sUk&NM%>  
stack[++top]=l+1; 5h [<!f=  
stack[++top]=j; J 7HOSFwXn  
} E^C [G)7n  
Im"8+756  
} _+ERX[i  
file://new InsertSort().sort(data); nU23D@l  
insertSort(data); *]>~lO1  
} PnJA'@x  
/** %4x,^ K]  
* @param data 8E|FFHNK<2  
*/ X&gXhr#dL\  
private void insertSort(int[] data) { [H=l# W@  
int temp; *t bgIW+h  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); rI'kZ0&  
} IXU~& 5&J  
} $AF,4Ir-b+  
} V;(Rg=5  
49Hgq/uO  
} 5|g#>sx>`q  
*qKf!&  
归并排序: *fp4u_:`  
:MILOwF  
package org.rut.util.algorithm.support; &G aI  
2>vn'sXdj  
import org.rut.util.algorithm.SortUtil; ]D@y""{--s  
@#::C@V]  
/** P,bis7X.  
* @author treeroot rW[7 _4  
* @since 2006-2-2 ar:qCq$\  
* @version 1.0 BFPy~5W  
*/ &t@|/~%[  
public class MergeSort implements SortUtil.Sort{ D' `[y  
/'L/O;H20  
/* (non-Javadoc) !$!"$-5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4~e6z(  
*/ Mo&Po9  
public void sort(int[] data) { 24I~{Qy  
int[] temp=new int[data.length]; | (: PX  
mergeSort(data,temp,0,data.length-1); r(Y@;  
} (@cZmU,  
ktiC*|fd  
private void mergeSort(int[] data,int[] temp,int l,int r){ jEW@~e  
int mid=(l+r)/2; }>?"bcJ  
if(l==r) return ; c59l/qoz  
mergeSort(data,temp,l,mid); /;9]LC.g  
mergeSort(data,temp,mid+1,r); 3ms{gZbw  
for(int i=l;i<=r;i++){ +\~Mx>Cn  
temp=data; IfpFsq:  
} qj<_*  
int i1=l; 8EAkM*D w  
int i2=mid+1; Q);^gV  
for(int cur=l;cur<=r;cur++){ Jtl[9qe#]  
if(i1==mid+1) [ FNA:  
data[cur]=temp[i2++]; LE@`TPg$R  
else if(i2>r) Y?V>%eBu  
data[cur]=temp[i1++]; WHv xBd  
else if(temp[i1] data[cur]=temp[i1++]; >TwL&la  
else ZH=oQV)6  
data[cur]=temp[i2++]; )Tj\ym-Vl  
} dS"%( ?o  
} 'E~[I"0  
Oz7WtN  
} m'ykDK\B  
uNG?`>4>  
改进后的归并排序: L }&$5KiwV  
%yP*Vp,W  
package org.rut.util.algorithm.support; O)9{qU:[b  
yf7$m_$C'  
import org.rut.util.algorithm.SortUtil; K;#9: Z^+  
8Qi@z Jq,  
/** Mwd(?o  
* @author treeroot \ D,c*I|p7  
* @since 2006-2-2 FT.;}!"l  
* @version 1.0 tO]` I-  
*/ 5<KY}  
public class ImprovedMergeSort implements SortUtil.Sort { ,1&</R_  
>s+*D=k  
private static final int THRESHOLD = 10; 'hl4cHk14  
=)9@rV&~  
/* "1Oe bo2  
* (non-Javadoc) U> s$}Y:+Z  
* 5cE?>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p@+r&Mg%W"  
*/ sy;_%,}N  
public void sort(int[] data) { ]:vo"{*C  
int[] temp=new int[data.length]; O6$d@r;EK]  
mergeSort(data,temp,0,data.length-1); %wuD4PRK  
}  ]7yr.4?a  
hIv8A_>@`  
private void mergeSort(int[] data, int[] temp, int l, int r) { E/_I$<,_y  
int i, j, k; O$,MdhyXC  
int mid = (l + r) / 2; BNe6q[ )W~  
if (l == r) KWH l+p L  
return; mIX[HDy:V$  
if ((mid - l) >= THRESHOLD) _]# ^2S  
mergeSort(data, temp, l, mid); -r!sY+Z>  
else K6l{wyMb|  
insertSort(data, l, mid - l + 1); u+Q<> >lU  
if ((r - mid) > THRESHOLD) `gFE/i18  
mergeSort(data, temp, mid + 1, r); rW(<[2vg  
else >l3iAy!sZ  
insertSort(data, mid + 1, r - mid); pZg}7F{$  
Gn8'h TM  
for (i = l; i <= mid; i++) { mjtmN0^SR  
temp = data; aX$Q}mgb  
} ^E^Cj;od@  
for (j = 1; j <= r - mid; j++) { gLL8-T[9  
temp[r - j + 1] = data[j + mid]; 3/i_?G  
} !ENDQ?1  
int a = temp[l]; }[gk9uM_7  
int b = temp[r]; ?' :v): J}  
for (i = l, j = r, k = l; k <= r; k++) { 7} 2Aq  
if (a < b) { H ]x-s  
data[k] = temp[i++]; Dxlpo! ?#  
a = temp; yxx'g+D*  
} else { \6)]!$F6:  
data[k] = temp[j--]; HDY2<Hzc  
b = temp[j]; 6S GV}dAx  
} ,p\:Z3{ZH  
} 2`;&Uwt  
} =W_Pph  
Qmg2lP.)  
/** %HAforH  
* @param data zY=eeG+4s  
* @param l &Q`{ Gk  
* @param i +'VSD`BR  
*/ tvlrUp  
private void insertSort(int[] data, int start, int len) { 4{rqGC /  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); _P{f+HxU  
} fZ5zsm'N  
} ;LXwW(_6d  
} 3Hd~mfO\  
} P\lEfsuR  
r&/M')}?Lw  
堆排序: 'OTQiI^t=  
TF1,7Qd  
package org.rut.util.algorithm.support; :yi?<  
(E{}iq@2  
import org.rut.util.algorithm.SortUtil; g]Jt (aYK  
pRys 5/&v  
/** s ]XZQr%  
* @author treeroot o^ zrF  
* @since 2006-2-2 sW^e D;  
* @version 1.0 tSVWO] <  
*/ bpx ^  
public class HeapSort implements SortUtil.Sort{ >_J9D?3S  
@y!oKF  
/* (non-Javadoc) 90[6PSXk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L}a-c(G+8  
*/ -k8<LR3  
public void sort(int[] data) { B{ Ab #  
MaxHeap h=new MaxHeap(); T@%\?=P  
h.init(data); YWFq&II|Z  
for(int i=0;i h.remove(); -^aJ}[uaI  
System.arraycopy(h.queue,1,data,0,data.length); \'Q rJ ?D  
} D 0 O^=v|  
g2;lEW  
private static class MaxHeap{ &.l^>#  
:;hz!6!  
void init(int[] data){ lsaA    
this.queue=new int[data.length+1]; ?Gl]O3@3  
for(int i=0;i queue[++size]=data; bEKhU\@=J  
fixUp(size); smUSR4VK  
} XkPE%m_5D  
} w7@TM%nS  
)Yu  
private int size=0; -|GKtZ]}  
SF=TG84<  
private int[] queue; M>_vsI^I'  
AP:Q]A6}  
public int get() { ; ,}Dh/&E  
return queue[1]; ]t0St~qUL)  
} IIG9&F$G  
yAiO._U  
public void remove() { @ry/zG#  
SortUtil.swap(queue,1,size--); a$j ~YUG_  
fixDown(1); r~z'QG6v/  
} rQxiG[0  
file://fixdown Bd]k]v+  
private void fixDown(int k) { zM,r0Z  
int j; p|C[T]J\@  
while ((j = k << 1) <= size) { oY4^CGk=  
if (j < size %26amp;%26amp; queue[j] j++; ^TtL-|I  
if (queue[k]>queue[j]) file://不用交换 5a-x$Qb9  
break; f"*k>=ETI  
SortUtil.swap(queue,j,k); rz0)S py6  
k = j; `a%MD>R_Lg  
} _i_P@I<M|~  
} T]JmnCX>:  
private void fixUp(int k) { s+?2oPa  
while (k > 1) { w_f.\\1r  
int j = k >> 1; UE{$hLI?g  
if (queue[j]>queue[k]) Sx[ eX,q  
break; q3<kr<SP  
SortUtil.swap(queue,j,k); R RE8|%p;B  
k = j; \BuyJskE  
} _jc_(;KPF  
} a'-u(Bw  
W6Mq:?+D  
} Wqkb1~]#Y  
Q~tXT_  
} ruQt0q,W3%  
Cs_&BSs  
SortUtil: {#:31)P  
_1NK9dp:  
package org.rut.util.algorithm; $&=xw _  
7o0zny3?  
import org.rut.util.algorithm.support.BubbleSort; \ )=WA!  
import org.rut.util.algorithm.support.HeapSort; )S 7+y6f&*  
import org.rut.util.algorithm.support.ImprovedMergeSort; 4EHrd;|   
import org.rut.util.algorithm.support.ImprovedQuickSort; |mP};&b  
import org.rut.util.algorithm.support.InsertSort; 3 3|t5Ia  
import org.rut.util.algorithm.support.MergeSort; gfs;?vP  
import org.rut.util.algorithm.support.QuickSort; s-_D,$ |  
import org.rut.util.algorithm.support.SelectionSort; <:V~_j6P0  
import org.rut.util.algorithm.support.ShellSort; +Q[uq!<VJk  
D8<C7  
/** WFiX=@SS  
* @author treeroot *I)J%#  
* @since 2006-2-2 VJ=>2'I  
* @version 1.0 h7 E~I J  
*/ ~W[I  
public class SortUtil { :{#O   
public final static int INSERT = 1; ] \M+ju  
public final static int BUBBLE = 2; T#H^ }`  
public final static int SELECTION = 3; {$,\Qg  
public final static int SHELL = 4; N(Ru/9!y"  
public final static int QUICK = 5; >Jmla~A  
public final static int IMPROVED_QUICK = 6; oX;.v9a  
public final static int MERGE = 7; *m}8L%<HT  
public final static int IMPROVED_MERGE = 8; +bS\iw+  
public final static int HEAP = 9; U\p`YZ  
a$ "nNmD?  
public static void sort(int[] data) { n&njSj/  
sort(data, IMPROVED_QUICK); \y5lYb,*c_  
} Ln4]uqMG.  
private static String[] name={ K9lekevB  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" DxV=S0P  
}; =3 .dgtH  
T@tsM|pI  
private static Sort[] impl=new Sort[]{ F#gA2VCm  
new InsertSort(), zak\%yY`  
new BubbleSort(), I&{T 4.B:U  
new SelectionSort(), 3'Y-~^ml|  
new ShellSort(), 68XJ`/d  
new QuickSort(), Lw}-oE !U  
new ImprovedQuickSort(), k1<^Ept  
new MergeSort(), oFj_o  
new ImprovedMergeSort(), KClkPL!jP  
new HeapSort() (dq_ ,LI  
}; [UA*We 1  
%):_  
public static String toString(int algorithm){ )&@YRT\c?8  
return name[algorithm-1]; YGJ!!(~r  
} F qH))2  
(oG YnN,2  
public static void sort(int[] data, int algorithm) { 2y - QH  
impl[algorithm-1].sort(data); 1'qXT{f/~  
} ~HB#7+b  
]E-/}Ysz  
public static interface Sort { V: D;?$Jl  
public void sort(int[] data); a9-Mc5^'n  
} +]eG=. u  
Uj7YTB  
public static void swap(int[] data, int i, int j) { 0vqVE]C  
int temp = data; DyN[Yp|V  
data = data[j]; $|=| "/  
data[j] = temp; w a_{\v=  
} q[\3,Y  
} |dgiW"tUm  
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