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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。 35KRJY#  
插入排序: _PPn =kuMa  
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package org.rut.util.algorithm.support; Ow50M;E  
;@FCa j&  
import org.rut.util.algorithm.SortUtil; ]J^/`gc  
/** vs%d}]v  
* @author treeroot '',g}WvRwe  
* @since 2006-2-2 {XEX0|TZ  
* @version 1.0 wM1&_%N  
*/ 5kik+  
public class InsertSort implements SortUtil.Sort{  &Sdf0"  
[C`LKA$t  
/* (non-Javadoc) <]f{X<ef  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7tP qez#  
*/ qORL 7?{  
public void sort(int[] data) { v83@J~  
int temp; ' +f(9/  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); X6Q\NJ"B  
} 1}Th@Vq  
} QJF_ "  
} [:gp_Z&  
U62Z ?nge%  
} {HtW`r1)Tt  
dlRTxb^Y>u  
冒泡排序: n/ZX$?tKAK  
-A^o5s  
package org.rut.util.algorithm.support; u10;qYfL8o  
!B v.@~  
import org.rut.util.algorithm.SortUtil; TZ#^AV=ae  
Y3JIDT^  
/** !<vy!pXg  
* @author treeroot /d*[za'0  
* @since 2006-2-2 L_Xbca=  
* @version 1.0 nIWY<Z"  
*/ iyv5\  
public class BubbleSort implements SortUtil.Sort{ Jbn^G7vH<6  
&Lbh?C  
/* (non-Javadoc) #H]c/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7nPjeh  
*/ va2FgW`Bd+  
public void sort(int[] data) { jct'B}@X(  
int temp; S1o[)q   
for(int i=0;i for(int j=data.length-1;j>i;j--){ }z F,dst  
if(data[j] SortUtil.swap(data,j,j-1); 0[f[6mm%m  
} 6F_:,b^  
} Zd}12HFq  
} 5VSc5*[  
} M=54xTh0Y  
nyL$z-I)  
} /V }Z,'+  
[0!*<%BgK'  
选择排序: kjF4c6v  
?=,7'@e  
package org.rut.util.algorithm.support; TDX~?> P  
+45.fo  
import org.rut.util.algorithm.SortUtil; +y^'\KN  
/5X_gjOL,  
/** #wZbG|%  
* @author treeroot >eWORf>7  
* @since 2006-2-2 d*dPi^JjC  
* @version 1.0 7l4}b^>/`  
*/ QIfP%,LT  
public class SelectionSort implements SortUtil.Sort { `$MO;Fv,G  
uT>"(wnJ|  
/* ?_d3|]N  
* (non-Javadoc) }.D adV  
* XZ<8M}Lg  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AquO#A[,#  
*/ <m,bP c :R  
public void sort(int[] data) { = \M6s  
int temp; 8~sC$sIlE  
for (int i = 0; i < data.length; i++) { 9 ^=kt 2[  
int lowIndex = i; QJSi|&Rx&?  
for (int j = data.length - 1; j > i; j--) { @<yYMo7  
if (data[j] < data[lowIndex]) { .I]EP-  
lowIndex = j; q2U?EP{8~  
} _ BoA&Ism  
} n}C0gt-  
SortUtil.swap(data,i,lowIndex); OQVo4yl"  
} 'vV+Wu#[  
} 'Hsd7Dpi}  
n5y0$S/ D  
} y+ 4#Iy  
n72kJ3u.  
Shell排序: &7 9F Uac  
>D Ai-`e  
package org.rut.util.algorithm.support; vDyGxU!#\  
fg/hUUl  
import org.rut.util.algorithm.SortUtil; 4KR$sKq$q  
%' /^[j#  
/** m95] z18T'  
* @author treeroot NU"L1dK @  
* @since 2006-2-2 F_&H*kL L3  
* @version 1.0 f?TS#jG4}  
*/ ( j:eky  
public class ShellSort implements SortUtil.Sort{ @ V_i%=go  
+U iJWO  
/* (non-Javadoc) 8\G"I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2J (nJT"  
*/ )6%a9&~H  
public void sort(int[] data) { `Ue5;<K-/  
for(int i=data.length/2;i>2;i/=2){ j Y(|z*|  
for(int j=0;j insertSort(data,j,i); 4]ko  
} 89{`GKWX  
} yH9&HFDp  
insertSort(data,0,1); ^\r{72!y  
} ikO9p|J  
ANfy+@  
/** iu$Y0.H@  
* @param data nd[Ja_h  
* @param j \(}pm#O  
* @param i Wiyiq )^  
*/ Y?-Ef sK  
private void insertSort(int[] data, int start, int inc) { !$#5E1:\  
int temp; >>cL"m  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 1Beh&pl^  
} 2cwJ);Eg2  
} xIH= gK  
} mC3:P5/c  
z /nW; ow  
} rxj#  
`XM0Mm%  
快速排序: t^2$ent  
>Bu _NoM  
package org.rut.util.algorithm.support; ]]y4$ [|L  
`|PhXr  
import org.rut.util.algorithm.SortUtil; `~\8fN  
ZG? e%  
/** \Y`psSf+  
* @author treeroot Ua4P@#cU  
* @since 2006-2-2 6R*eJICN  
* @version 1.0 N,.awA{  
*/ EKS?3z%!  
public class QuickSort implements SortUtil.Sort{ -J0OtrZ  
2wa'WEx  
/* (non-Javadoc) bP,Ka  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >qUD_U3A  
*/ /B|"<`-H  
public void sort(int[] data) { Qwp2h"t`  
quickSort(data,0,data.length-1); m*\LO%s]E  
} Gyrc~m[$  
private void quickSort(int[] data,int i,int j){ *$3p3-  
int pivotIndex=(i+j)/2; $M~`)UeV_  
file://swap _#uRKy<`N  
SortUtil.swap(data,pivotIndex,j); jUDE)~h  
YN~1.!F  
int k=partition(data,i-1,j,data[j]); c~}FYO$  
SortUtil.swap(data,k,j); BqM[{Kv  
if((k-i)>1) quickSort(data,i,k-1); nU0##  
if((j-k)>1) quickSort(data,k+1,j); f0YBy<a  
7K+eI!m.s  
} MP.ye|i4Q  
/** MZqHL4<|  
* @param data ,XI=e=  
* @param i c` N_MP  
* @param j G_5w5dbG  
* @return +{}p(9w@  
*/ PnL?zae  
private int partition(int[] data, int l, int r,int pivot) { w2jB6NQX  
do{ :Zo^Uc:*w  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); b< []z,  
SortUtil.swap(data,l,r); [{#n?BT  
} ~M1T @Mv  
while(l SortUtil.swap(data,l,r); HGi%b5:<=M  
return l; Y![8-L|Q  
} n57mh5mixM  
1lJ^$U  
} ?}S!8;d  
T'9M  
改进后的快速排序: 3>=G-AH/$K  
vE)d0l"  
package org.rut.util.algorithm.support; BqdGU-Q  
P ?96;  
import org.rut.util.algorithm.SortUtil; 7HL23Vr k  
LX #.  
/** *Wcq'S  
* @author treeroot &)|f|\yh"  
* @since 2006-2-2 lwo,D}  
* @version 1.0 uKB V`I  
*/ : qV|rih_Q  
public class ImprovedQuickSort implements SortUtil.Sort { jS5K:yx<  
7|Iq4@IT  
private static int MAX_STACK_SIZE=4096; V8b^{}nxt  
private static int THRESHOLD=10; 1^[]#N-Bu  
/* (non-Javadoc) =/\l=*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;=@?( n  
*/ }uO2 x@  
public void sort(int[] data) { 4{b/Nv:b  
int[] stack=new int[MAX_STACK_SIZE]; AJ6O>Euq  
l1%*LyD  
int top=-1; I*mBU^<9V  
int pivot; =/4}!B/  
int pivotIndex,l,r; 84s:cO  
2P{! n#"  
stack[++top]=0; PWfd<Yf!  
stack[++top]=data.length-1; 1{ ehnH  
q!q=axfMD  
while(top>0){ ZS@R?  
int j=stack[top--]; I;9DG8C&v*  
int i=stack[top--]; 8^R~qpg%  
$N|Spp0  
pivotIndex=(i+j)/2; RLGIST`  
pivot=data[pivotIndex]; %6Y}0>gY  
Ie8SPNY-H  
SortUtil.swap(data,pivotIndex,j); EJJ&`,q  
B*^QTJ  
file://partition M?kXzb\O  
l=i-1; 5 RYrAzQo  
r=j; 2%MS$Fto  
do{ |Z$)t%'  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); MW=rX>tE  
SortUtil.swap(data,l,r); tMo=q7ig  
} U;gy4rj  
while(l SortUtil.swap(data,l,r); U]ZI_[\'U  
SortUtil.swap(data,l,j); 5z" X>!?^  
9'KOc5@l^  
if((l-i)>THRESHOLD){ rKl  
stack[++top]=i; :z$+leNH\  
stack[++top]=l-1; clM6R  
} -&QpQ7q1  
if((j-l)>THRESHOLD){ h9~oS/%:  
stack[++top]=l+1; _cJ\A0h^  
stack[++top]=j; x7xQrjE  
} 1z@ ncqe  
5o0H7k]  
} 18y'#<X!  
file://new InsertSort().sort(data); 8P2_/)|  
insertSort(data); P{,=a]x,mz  
} nrM-\'  
/** 'ztY>KVj  
* @param data |1T[P)Q  
*/ `|:` yl  
private void insertSort(int[] data) { !T}R=;)e h  
int temp; *4l6+#W  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); "2T* w~V&y  
} 0 Gq<APtr  
} B""=&(Yu  
} AO8%!+"_  
2}5@: cwR+  
} c2d1'l]n  
vQ{mEaH  
归并排序: )xTu|V   
R5<:3tk=X  
package org.rut.util.algorithm.support; |lVi* 4za%  
'/X m%S  
import org.rut.util.algorithm.SortUtil; n5*m x7  
B5]nP .R  
/** jW}hLjlN  
* @author treeroot CR-2>,*a9  
* @since 2006-2-2 ~sCdvBA  
* @version 1.0 :} o{<U  
*/ zZ8:>2Ps(  
public class MergeSort implements SortUtil.Sort{ 2JHV*/Q  
D5!I{hp"  
/* (non-Javadoc) /qd~|[Kx:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rP}0B/  
*/ `QT9W-0e^  
public void sort(int[] data) { Angt=q  
int[] temp=new int[data.length]; -V||1@ |  
mergeSort(data,temp,0,data.length-1); s6I/%R3  
} <"LA70Hkk  
B> zQ[e@t  
private void mergeSort(int[] data,int[] temp,int l,int r){ kO,vHg$  
int mid=(l+r)/2; OL623jQX  
if(l==r) return ; O{=@c96rl  
mergeSort(data,temp,l,mid); }]j#C  
mergeSort(data,temp,mid+1,r); IZxr;\dq6  
for(int i=l;i<=r;i++){ \Pd>$Q  
temp=data; 7#9fcfL  
} ~8[`(/hj  
int i1=l; }`uq:y  
int i2=mid+1; RNX>I,2sh  
for(int cur=l;cur<=r;cur++){ CbT ;#0  
if(i1==mid+1) [ _&z+  
data[cur]=temp[i2++]; YKa9]Q  
else if(i2>r) 4o( Q+6m  
data[cur]=temp[i1++]; p$6L_ *$  
else if(temp[i1] data[cur]=temp[i1++]; &"X1w $  
else ES[]A&tf  
data[cur]=temp[i2++]; tSaD=#v  
} 1( ]{tF  
} =n M Aw&`  
tU>4?`)E  
} =#vU$~a  
]?hlpL  
改进后的归并排序: <;dFiI-GO#  
-4S4I  
package org.rut.util.algorithm.support; z HvW@A'F  
 37|EG  
import org.rut.util.algorithm.SortUtil; :tLMh08h  
QQUZneIDp  
/** 2%j"E{J&  
* @author treeroot h ?+vH{}j  
* @since 2006-2-2 ,uS}wJAX  
* @version 1.0 !]#;'  
*/ F=$U.K~1?  
public class ImprovedMergeSort implements SortUtil.Sort { .c_qMTm"  
Q_|Lv&  
private static final int THRESHOLD = 10; .vpx@_;]9  
.WW|v  
/* iMp_1EXe  
* (non-Javadoc)  C0j`H(  
* ^L's45&_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \-:4TuU  
*/ Z]^O=kX7k  
public void sort(int[] data) { rF . Oo0  
int[] temp=new int[data.length]; D}bCMN <  
mergeSort(data,temp,0,data.length-1); 8' +I8J0l  
} C0'_bTfB  
*g 2N&U  
private void mergeSort(int[] data, int[] temp, int l, int r) { {7 nz:f  
int i, j, k; R,W w/D  
int mid = (l + r) / 2; Br"K{g?  
if (l == r) 0u ,nSvch  
return; hu-6V="^9  
if ((mid - l) >= THRESHOLD) A,%NdM;t=5  
mergeSort(data, temp, l, mid); J|dj`Z ?  
else @86I|cY  
insertSort(data, l, mid - l + 1); H`8}w{ft&  
if ((r - mid) > THRESHOLD) rh6m  
mergeSort(data, temp, mid + 1, r); [u/Wh+  
else fMRMQR=6B  
insertSort(data, mid + 1, r - mid); W/<C$T4  
/@K1"/fqH  
for (i = l; i <= mid; i++) { o,=dm@j  
temp = data; &y:SK)  
} 6>/g`%`N  
for (j = 1; j <= r - mid; j++) { e}W|wJ):j@  
temp[r - j + 1] = data[j + mid]; MrpT5|t  
} 'E#Bz"T  
int a = temp[l];  x5W. 3*  
int b = temp[r]; !a9/8U_>XF  
for (i = l, j = r, k = l; k <= r; k++) { b$eZ>X  
if (a < b) { rFYw6&;vOi  
data[k] = temp[i++]; R"[U<^  
a = temp; [!b=A:@  
} else { wRj&k(?*  
data[k] = temp[j--]; v,,Dz8!Ty  
b = temp[j]; %weG}gCM  
} RL1cx|  
} %x|0<@b7-  
} UoKXo*W2  
Wj31mV  
/** _9"%;:t  
* @param data $oH?7sj  
* @param l of?'FrU  
* @param i X?q,m4+  
*/ FFID<L f/2  
private void insertSort(int[] data, int start, int len) { NEX{vZkgw  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 0o-KjX?kP  
} qX!P:M  
} .06[*S  
} w:o,mzuXK  
} vrvOPLiQ  
f;%\4TH?  
堆排序: DsF<P@O6  
ffS]%qa  
package org.rut.util.algorithm.support; R3@$ao  
!;;WS~no3  
import org.rut.util.algorithm.SortUtil; 0^&-j.9  
MbjMO"}  
/** G,h=5y9_J  
* @author treeroot ^`oyf{w@  
* @since 2006-2-2 .wz.Jr`{  
* @version 1.0 S(h+,+289  
*/ \>r<z46x  
public class HeapSort implements SortUtil.Sort{ %v 1NDhaXz  
53X5&Bwh  
/* (non-Javadoc) ':_1z5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hha^:,  
*/ 3+2cD  
public void sort(int[] data) { e2$k %c~  
MaxHeap h=new MaxHeap(); o-%DL*^5  
h.init(data); FTC,{$  
for(int i=0;i h.remove(); G,JNUok  
System.arraycopy(h.queue,1,data,0,data.length); x9VR>ux&  
} fr([g?F%D  
eU.HS78  
private static class MaxHeap{ q~*>  
;]xJC j  
void init(int[] data){ l<=Y.P_2  
this.queue=new int[data.length+1]; pcjb;&<  
for(int i=0;i queue[++size]=data; 5t~p99#?  
fixUp(size); 'J"m`a8no  
} E]j2%}6Z%  
} \dw*yZ^  
QIZbAnn_  
private int size=0; Id;YIycXe  
l|p \8=  
private int[] queue; ?:XbZ"25pJ  
ZF6?N?t}h8  
public int get() { HCTjFW>C  
return queue[1]; o&b1-=MC2  
} cq \()uF'c  
p8a \> {  
public void remove() { 2[R{IV8e  
SortUtil.swap(queue,1,size--); beCTOmC  
fixDown(1); ^&6'FE  
} \<K@t=/ 6  
file://fixdown UN6Du\)]d  
private void fixDown(int k) { ]Uee!-dZ  
int j; NRgNW1#  
while ((j = k << 1) <= size) { pv #uLo  
if (j < size %26amp;%26amp; queue[j] j++; }tRY,f  
if (queue[k]>queue[j]) file://不用交换 S.X*)CBB  
break; {(MC]]'?  
SortUtil.swap(queue,j,k); _.y0 QkwV  
k = j; 4tv}V:EO  
} vPA {)l\K  
} llP 5  
private void fixUp(int k) { JD}"_,-  
while (k > 1) { t^zmv PDK  
int j = k >> 1; ">^O{X\  
if (queue[j]>queue[k]) w0i v\yIRQ  
break; HKZD*E((  
SortUtil.swap(queue,j,k); 7$&3(#!N  
k = j; N ?mTAF'M  
} o<r|YRzQl  
} kxp, ZP  
YYc.e T<  
} b;XUv4~V  
*.]M1  
} b7_uT`<  
ToWtltCD  
SortUtil: $<(FZb=  
Zw`vPvb!  
package org.rut.util.algorithm; Q(\U'|%J  
8NRc+@f|m  
import org.rut.util.algorithm.support.BubbleSort; <p74U( V  
import org.rut.util.algorithm.support.HeapSort; !K~:crUV|S  
import org.rut.util.algorithm.support.ImprovedMergeSort; w[S!U<9/  
import org.rut.util.algorithm.support.ImprovedQuickSort;  8~>5k  
import org.rut.util.algorithm.support.InsertSort; D L0i  
import org.rut.util.algorithm.support.MergeSort; J<4 egk4  
import org.rut.util.algorithm.support.QuickSort; oSOO5dk:z  
import org.rut.util.algorithm.support.SelectionSort; xF4>D!T%8  
import org.rut.util.algorithm.support.ShellSort; tgPx!5U  
Y]SX2kk(2  
/** ~Yw`w 2  
* @author treeroot *$I5_A8,.  
* @since 2006-2-2 8- U1Y  
* @version 1.0 Qwm#6{5  
*/ ;/Z9M"!u[  
public class SortUtil { `Y~EL?  
public final static int INSERT = 1; <[e E5X(  
public final static int BUBBLE = 2; oS/cS)N20  
public final static int SELECTION = 3; N=QeeAI}}m  
public final static int SHELL = 4; @rO4BTi>O  
public final static int QUICK = 5; y(!Y N7_A  
public final static int IMPROVED_QUICK = 6; P~5[.6gW  
public final static int MERGE = 7; )Uv lEG']  
public final static int IMPROVED_MERGE = 8; !5;A.f  
public final static int HEAP = 9; jeM/8~^4-  
[8o!X)  
public static void sort(int[] data) { ^}gQh#  
sort(data, IMPROVED_QUICK); m6 )sX&  
} kt ILKpHt"  
private static String[] name={ lStYfO:<'v  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" JQhw>H9&  
}; :q xd])-  
Xo{|m[,  
private static Sort[] impl=new Sort[]{ w,t>M_( N  
new InsertSort(), =&J 7 'nDP  
new BubbleSort(), >+ZG {'!j  
new SelectionSort(), JToc("V  
new ShellSort(), ,(6U3W*bu  
new QuickSort(), ;;9W/m~]  
new ImprovedQuickSort(), b`=\<u8  
new MergeSort(), J4Ix\r_  
new ImprovedMergeSort(), ,&1DKx  
new HeapSort() $&@L[[xl  
}; K9#=@}!3L  
S-^RZ"  
public static String toString(int algorithm){ %YI Xk1  
return name[algorithm-1]; UUf-G0/P  
} dsx'l0q 'i  
]5+db0  
public static void sort(int[] data, int algorithm) { G/2| *H  
impl[algorithm-1].sort(data); 0jlwL  
} y7;i4::A\  
rHir> p  
public static interface Sort { meHnT9a^  
public void sort(int[] data); &: i|;^^2  
} J;K-Pv +  
f xWW "B*A  
public static void swap(int[] data, int i, int j) { 0'giAA  
int temp = data; %V>Ss9;/8  
data = data[j]; NDJIaX:]  
data[j] = temp; iBq|]  
} pohA??t2:  
} ~VRt 6C  
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