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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。 J^=Xy(3e  
插入排序: 19:1n]*X<  
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package org.rut.util.algorithm.support; w!b;.l  
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import org.rut.util.algorithm.SortUtil; -nZDFC8y$  
/** `k7X|  
* @author treeroot _ mgu r  
* @since 2006-2-2 p@?ud%  
* @version 1.0 *Oq& g\K)  
*/ [4Q;5 'Dj  
public class InsertSort implements SortUtil.Sort{ OGcW]i  
BQ=JZ4&  
/* (non-Javadoc) t:P]G>)x|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,b<m],p  
*/ mYqLqezAA  
public void sort(int[] data) { A>f rf[fAW  
int temp; .IsOU  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); U1D;O}z~  
} g'9~T8i& ^  
} v=daafO  
} 1*f/Y9 Z  
?jsgBol  
} _U o3_us  
w ^ X@PpP  
冒泡排序: t^=S\1"R\  
,uD}1 G<u  
package org.rut.util.algorithm.support; [[O4_)?el  
It]GlxMX  
import org.rut.util.algorithm.SortUtil; JH#p;7;  
M}`T-"qf  
/** %Q=rm!Syv  
* @author treeroot KuF>2KX~Y  
* @since 2006-2-2 lSy_cItF  
* @version 1.0 " eS-i@  
*/ TCK#bJ  
public class BubbleSort implements SortUtil.Sort{ {]iM5?  
5'[yw:P-8  
/* (non-Javadoc) )1g\v8XT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $,o@&QT?AT  
*/ v <m=g!  
public void sort(int[] data) { DG,m;vg+  
int temp; '8LHX6FXK  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 6%V#_]  
if(data[j] SortUtil.swap(data,j,j-1); HP=5 a.  
} YXg^t$  
} )"g @"LJ=  
} ?z3|^oU~d  
} (S_1C,  
t1p[!53(  
} @vO~'Xxq!  
Hn]6re  
选择排序: )h,}v()qc#  
bR J]avR  
package org.rut.util.algorithm.support; ^vZu[ m  
(hIe!"s *  
import org.rut.util.algorithm.SortUtil; aN';_tGvK  
} : T }N]  
/** <!-#]6  
* @author treeroot !N/?b^y  
* @since 2006-2-2 0IQ|`C.  
* @version 1.0 KcM+ 8W\  
*/ a fB?js6  
public class SelectionSort implements SortUtil.Sort { {DX1/49  
Q) iN_|  
/* 0L \vi  
* (non-Javadoc) p+;x&h)[l  
* b(A;mt#N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^oEaE#I  
*/ ||;a#FZ^  
public void sort(int[] data) { w69G6G(  
int temp; sh%%U  
for (int i = 0; i < data.length; i++) { "R[6Q ^vw  
int lowIndex = i; ^ lG^.  
for (int j = data.length - 1; j > i; j--) { _:Ov-HIR  
if (data[j] < data[lowIndex]) { 0Hr)h{!F"  
lowIndex = j; 9abn6S(XpJ  
} LufZ,  
} OQ _wsAA  
SortUtil.swap(data,i,lowIndex); $KmE9Se6,  
} nz`"f,  
} OKCX>'j:S  
[ZETyM`  
} 'D?sRbJ=  
2'WdH1UrBc  
Shell排序: Jh%k:TrBm  
9QkIMJf0e  
package org.rut.util.algorithm.support; PU%WpI.w  
{'G u@l  
import org.rut.util.algorithm.SortUtil; ;{rl Y>  
&_Z8:5e  
/** 'x= y:0A  
* @author treeroot P,n:u'Iwy  
* @since 2006-2-2 `(L<Q%  
* @version 1.0 e{,[\7nF  
*/ BBsZPJ5  
public class ShellSort implements SortUtil.Sort{ tHo/Vly6Z  
(z'!'?v;  
/* (non-Javadoc) u_S>`I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "HbrYYRb'  
*/ \JGRd8S[  
public void sort(int[] data) { p+R8Mo;I  
for(int i=data.length/2;i>2;i/=2){ |9 4xRC  
for(int j=0;j insertSort(data,j,i); nmrdqSV  
} Xqas[:)7+  
} LiD-su D  
insertSort(data,0,1); (ZEDDV2  
} _ 3>|1RB  
m}nA- *  
/** XXZ$^W&  
* @param data @_Ly^' "  
* @param j Pl[WCh  
* @param i #e;\Eap  
*/ 0"M0tA#  
private void insertSort(int[] data, int start, int inc) { e7gWz~  
int temp; DYCXzFAa  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 1H,hw  
} 3yIC@>&y(8  
} ,6a }l;lv  
} {%z}CTf#  
jz$83TB-  
} bq` 0$c%hN  
W$Zc;KRz$0  
快速排序: LL=nMoS  
)IZ~!N|-w  
package org.rut.util.algorithm.support; vM2\tL@"  
JY@x.?N5$  
import org.rut.util.algorithm.SortUtil; 5P <  F  
UkBr4{+aE  
/** ;hp?wb  
* @author treeroot rDWqJ<8  
* @since 2006-2-2 W= \gPCo  
* @version 1.0 y'pX/5R0  
*/ (6\ H~  
public class QuickSort implements SortUtil.Sort{ |/AY!Y3  
D`uOBEX  
/* (non-Javadoc) M kadl<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s&*s9F  
*/ xo*[ g`N  
public void sort(int[] data) { '|N9xL m  
quickSort(data,0,data.length-1); dCH(N_  
} Gu136XiX  
private void quickSort(int[] data,int i,int j){ a"0'cgB}  
int pivotIndex=(i+j)/2; a=3{UEi'o  
file://swap TJp0^&Q  
SortUtil.swap(data,pivotIndex,j); :j0r~*z-  
(s.S n(E  
int k=partition(data,i-1,j,data[j]); {pNf& '  
SortUtil.swap(data,k,j); 9}6^5f?|  
if((k-i)>1) quickSort(data,i,k-1); =24<d!R  
if((j-k)>1) quickSort(data,k+1,j); yasKU6^R'  
1(z+*`"WB&  
} .EUOKPK4W  
/** YG6Kvc6T  
* @param data (eAh8^)  
* @param i UZ+FV;<  
* @param j Bx32pY  
* @return a<K@rgQ  
*/ O~AOZ^a:2  
private int partition(int[] data, int l, int r,int pivot) { Ju7nvxC  
do{ ?#917M  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ;1 02ddRV  
SortUtil.swap(data,l,r); (P N!k0Y  
} 0Ie9T1D=  
while(l SortUtil.swap(data,l,r); .v:K`y;f\(  
return l; ]%5DuE\M8\  
} W=EvEx^?%  
AyMMr_q  
} hol54)7$3:  
ii@O&g  
改进后的快速排序: B[0XzV]Z  
%%w]-`^h,  
package org.rut.util.algorithm.support; K-nf@o+  
hOSkxdi*^  
import org.rut.util.algorithm.SortUtil; nn_j"Nu  
&~7b-foCq  
/** A@0%7xm  
* @author treeroot h4^ a#%$  
* @since 2006-2-2 zk@K uBLL  
* @version 1.0 UC34AKm  
*/ Py8<db%  
public class ImprovedQuickSort implements SortUtil.Sort { <99Xg_e  
3J{`]v5`  
private static int MAX_STACK_SIZE=4096; BZE~k?*  
private static int THRESHOLD=10; Dyj5a($9"{  
/* (non-Javadoc) $h-5PwHp  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bG0t7~!{E  
*/ r='"X#CmV/  
public void sort(int[] data) { dviL5Eaj  
int[] stack=new int[MAX_STACK_SIZE]; pU*dE   
aMFUJrXo  
int top=-1; ~sQN\]5VW  
int pivot; ##!) }i  
int pivotIndex,l,r; wK CHG/W  
y$At$i>u  
stack[++top]=0; x.+}-(`W#~  
stack[++top]=data.length-1; #is:6Z,OEU  
WKQVT I&A.  
while(top>0){ #<bt}Tht  
int j=stack[top--]; @hiwq 7[j  
int i=stack[top--]; <;.Zms${@  
qF(F<$B  
pivotIndex=(i+j)/2; )BY\c7SG  
pivot=data[pivotIndex]; J..>ApX  
Fr)G h>  
SortUtil.swap(data,pivotIndex,j); +QIM~tt)  
|wZ8O}O{E  
file://partition F}A@H<?  
l=i-1; }06  
r=j; PQsqi;=)  
do{ #s1O(rLRl  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); vvLm9Tw  
SortUtil.swap(data,l,r); "| <\\HR  
} rs3Uk.Z^ '  
while(l SortUtil.swap(data,l,r); M? oK@i  
SortUtil.swap(data,l,j); tqE LF  
Dqe/n_Z  
if((l-i)>THRESHOLD){ b$nXljV4?  
stack[++top]=i; OCF\*Sx  
stack[++top]=l-1; 4XDR?KUM  
} 9 I> 3p4]  
if((j-l)>THRESHOLD){ @#}9?>UV  
stack[++top]=l+1; FG-w7a2mn  
stack[++top]=j; Nf>1`eP  
} QtQku1{  
n~l )7_G  
} 8| zR8L  
file://new InsertSort().sort(data); *lg1iP{]  
insertSort(data); Zg|z\VR  
} @xW)&d\'  
/** ,ORZtj  
* @param data u7&r'rZ1_!  
*/ U6 "U^  
private void insertSort(int[] data) { c@:r\]  
int temp; WJZW5 Xt  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); mk1;22o{TX  
} SM5i3EcFYP  
} oq=D9  
} ~<3qsA..  
1<^"OjQ  
} 2"NRnCx *  
/!UuGm   
归并排序: phUno2fH  
0yXUVKq3  
package org.rut.util.algorithm.support; Z bxd,|<|  
wYhWRgP  
import org.rut.util.algorithm.SortUtil; BUv;BzyV  
~ -Rr[O=E  
/** >/EmC3?b!  
* @author treeroot _h7+.U=  
* @since 2006-2-2 *"0Yr`)S  
* @version 1.0 pK4I?=A'  
*/ m~#S76!w  
public class MergeSort implements SortUtil.Sort{ &~U8S^os  
er^z:1'  
/* (non-Javadoc) X",fp  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %WCA?W0:4  
*/ Vf*!m~]Vqi  
public void sort(int[] data) { y%=\E  
int[] temp=new int[data.length]; :N%cIxrqP  
mergeSort(data,temp,0,data.length-1); Fm{Ri=X<:  
} <dDGV>n4;  
} O9q$-8!  
private void mergeSort(int[] data,int[] temp,int l,int r){ OibW8A4Z1  
int mid=(l+r)/2; , Z#t-?  
if(l==r) return ; N- ?U2V  
mergeSort(data,temp,l,mid); 3`J?as@^8  
mergeSort(data,temp,mid+1,r); @ h([c  
for(int i=l;i<=r;i++){ }.4`zK&SB  
temp=data; KSuP'.l  
} FgNO#%  
int i1=l; R* E/E  
int i2=mid+1; (zBa2Vmmv  
for(int cur=l;cur<=r;cur++){ 9IMtqL&  
if(i1==mid+1) 0kpRvdEr-  
data[cur]=temp[i2++]; ?)7uwJsH  
else if(i2>r) RP7e)?5$s  
data[cur]=temp[i1++]; ${KDGJ,^  
else if(temp[i1] data[cur]=temp[i1++]; vyERt^z  
else d37l/I  
data[cur]=temp[i2++]; T%KZV/  
} %]>c4"H  
} WhSQ>h!@s  
0X`Qt[  
} u=jF\W9  
CY0|.x  
改进后的归并排序: $B*Ek>EK  
RqXcL,,9  
package org.rut.util.algorithm.support; 1a| q&L`o  
[sTr#9Z  
import org.rut.util.algorithm.SortUtil; #,qw~l]  
WDSkk"#TF  
/** wQ*vcbQX*  
* @author treeroot ?@(_GrE-  
* @since 2006-2-2 [E2afC>zrl  
* @version 1.0 cuBOE2vB.  
*/ R"Hhc(H  
public class ImprovedMergeSort implements SortUtil.Sort { : +/V  
cG,B;kMjo  
private static final int THRESHOLD = 10; 1s=M3m&H  
K/+5$SjF  
/* lOPCM1Se  
* (non-Javadoc) @ I LG3"  
* y;yXOE_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^T)HRT-k  
*/ 7tfMD(Q]e/  
public void sort(int[] data) { ly}6zOC\  
int[] temp=new int[data.length]; ?2%d;tW  
mergeSort(data,temp,0,data.length-1); .Hl]xI$;+  
} -B9C2  
qWGnIPk  
private void mergeSort(int[] data, int[] temp, int l, int r) { n(/(F `  
int i, j, k; R(kr@hM  
int mid = (l + r) / 2; _,=A\C_b@  
if (l == r) @~U: |h  
return; 92WvD  
if ((mid - l) >= THRESHOLD) :qc@S&v@]  
mergeSort(data, temp, l, mid); U GQ{QH  
else 8*H-</ =  
insertSort(data, l, mid - l + 1); \ZigG{  
if ((r - mid) > THRESHOLD) S WVeUL#5  
mergeSort(data, temp, mid + 1, r); =2\k Jv3  
else nY'0*:'u  
insertSort(data, mid + 1, r - mid); 1<fS&)^W  
y!6B Gz  
for (i = l; i <= mid; i++) { ANc)igo  
temp = data; KIC5U50J  
} d `>M-:dF  
for (j = 1; j <= r - mid; j++) { UQaLhK v:  
temp[r - j + 1] = data[j + mid]; ~urIA/  
} 2#kR1rJP  
int a = temp[l]; dd@^e)VZB  
int b = temp[r]; &v Lz{  
for (i = l, j = r, k = l; k <= r; k++) { ,icgne1j  
if (a < b) { mFjX  
data[k] = temp[i++]; ,fpu@@2  
a = temp; e ,/I}W  
} else { u&/q7EBfP  
data[k] = temp[j--]; l{>fma]7  
b = temp[j]; Uy5IvG;O+  
} =zDU!< U  
} @ JZ I  
} ?FVX &{{V  
w>p0ldi  
/** @v ss:'l  
* @param data \6-x~%xK  
* @param l }tF/ca:XPQ  
* @param i -GD_xk  
*/ "yCCei,hA?  
private void insertSort(int[] data, int start, int len) { TUIj-HSe  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); bTHKMaGWC  
} c$rkbbf~V  
} X]U,`oE)9  
} Qg"hN  
} hF s:9  
01g=Cg  
堆排序: >N@tInE  
o%i^t4J$e  
package org.rut.util.algorithm.support; gV$j ]  
-$f~V\M  
import org.rut.util.algorithm.SortUtil; l)[\TD  
n1 =B  
/** q&Y'zyHLP  
* @author treeroot gS_)(  
* @since 2006-2-2 vp? 87h  
* @version 1.0 t 9&xk?%{  
*/ ((Ak/qz  
public class HeapSort implements SortUtil.Sort{ ;&q}G1  
I@+h| n  
/* (non-Javadoc) j2c -01}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S_/9eI~X  
*/ <`i " 5`J  
public void sort(int[] data) { 15+>W4v  
MaxHeap h=new MaxHeap(); |!E>I  
h.init(data); dqnH7okZ  
for(int i=0;i h.remove(); y  >r7(qg  
System.arraycopy(h.queue,1,data,0,data.length); n$ $^(-g@)  
} lqn7$  
B8UtD  
private static class MaxHeap{ veAg?N<c p  
C8rD54A'M  
void init(int[] data){ I|9(*tq)  
this.queue=new int[data.length+1]; HS XS%v/Y  
for(int i=0;i queue[++size]=data; -G e5gQ=  
fixUp(size); rZ2X$FO@  
} FRd!UqMXY  
} (+6 8s9XS7  
C93BK)$}  
private int size=0; Xf!@uS6<X  
NUbw]Y90~  
private int[] queue; u~[HC)4(0  
?YWfoH4mS  
public int get() { , (dg]7  
return queue[1]; bO 2>ced  
} ,A`d!{]5  
0{^vqh.La  
public void remove() { 1 rKKph  
SortUtil.swap(queue,1,size--); u\wdb^8ds  
fixDown(1); T]Z|Wq`bot  
} s:3 altv  
file://fixdown #"-?+F=rk  
private void fixDown(int k) { 5Ds/^fA  
int j; I=o[\?u*_  
while ((j = k << 1) <= size) { to,DN2rN  
if (j < size %26amp;%26amp; queue[j] j++; ("Z;)s4q  
if (queue[k]>queue[j]) file://不用交换 4 YDK`:4I~  
break; ~XN--4%Q  
SortUtil.swap(queue,j,k); NAjY,)>'K  
k = j; G6(k wv4  
} Rt:k4Q   
} Yv k Qh{  
private void fixUp(int k) { d~F`q7F'?]  
while (k > 1) { ^`~M f  
int j = k >> 1; _;(`u!@/{  
if (queue[j]>queue[k]) ]Q,;5>#W  
break; $&~/`MxE  
SortUtil.swap(queue,j,k); O4RNt,?l  
k = j; ~\kJir  
} s7.2EkGl=  
} W&CQ87b  
<k?ofE1o  
} ~,+n_KST;  
A}WRpsA9  
} _a1 =?  
$2B _a  
SortUtil: ^ CVhV  
xxkU u6x#  
package org.rut.util.algorithm; /WlK*8C  
nv&uhu/q  
import org.rut.util.algorithm.support.BubbleSort; 1{+x >Pv:  
import org.rut.util.algorithm.support.HeapSort; g?N~mca$  
import org.rut.util.algorithm.support.ImprovedMergeSort;  N1,=5P$  
import org.rut.util.algorithm.support.ImprovedQuickSort; #=F"PhiX`  
import org.rut.util.algorithm.support.InsertSort; uT'_}cw  
import org.rut.util.algorithm.support.MergeSort; rE0?R( _  
import org.rut.util.algorithm.support.QuickSort; h07Z.q ;  
import org.rut.util.algorithm.support.SelectionSort; L1=3_fO  
import org.rut.util.algorithm.support.ShellSort; L08>9tf`  
Y$xO&\&)  
/** jy@vz,/:%5  
* @author treeroot D`p&`]k3v  
* @since 2006-2-2 ?~~sOf AP  
* @version 1.0 !<r+h, C  
*/ hoY.2 B_  
public class SortUtil { a h<1&UG,  
public final static int INSERT = 1; w1HE^ /  
public final static int BUBBLE = 2; rt">xVl  
public final static int SELECTION = 3; 7pMl:\  
public final static int SHELL = 4; 3 i<,#FaL  
public final static int QUICK = 5; ?xEQ'(UBQ  
public final static int IMPROVED_QUICK = 6; /~3~Xc ~=p  
public final static int MERGE = 7; (Mi]vK.4  
public final static int IMPROVED_MERGE = 8; Y.` {]rC  
public final static int HEAP = 9; Y<|!)JLB2  
S\fEV"  
public static void sort(int[] data) { 3sG7G:4  
sort(data, IMPROVED_QUICK);  aEUC  
} Fe 3*pUt  
private static String[] name={ jv $Y]nf  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" RtVy^~=G  
}; r /v'h@  
<;O=h; ~|  
private static Sort[] impl=new Sort[]{ C yg e  
new InsertSort(), #o Rm-yDr  
new BubbleSort(), )E;+C2G  
new SelectionSort(), zogtIn)  
new ShellSort(), Ow7NOhw  
new QuickSort(), RC 7|@a  
new ImprovedQuickSort(), *Q2;bmIc  
new MergeSort(), C!Cg.^;  
new ImprovedMergeSort(), 9~+A<X]Hd  
new HeapSort() 7sP;+G  
}; O7@CAr  
Eu/~4:XN  
public static String toString(int algorithm){ 6k6M&a  
return name[algorithm-1]; / hUuQDJ  
} 5G.Fi21 b  
Bz}Dgbb  
public static void sort(int[] data, int algorithm) { fw>@:m_bK  
impl[algorithm-1].sort(data); !iKR~&UpAL  
} u] C/RDTH  
TymE(,1  
public static interface Sort { hUirvDvX  
public void sort(int[] data); q6A!xQs<  
} 9pPb]v,6  
p- 5)J&  
public static void swap(int[] data, int i, int j) { {\-rZb==F2  
int temp = data; !NWz  
data = data[j]; B;9"=0  
data[j] = temp; H /Idc,*  
} IV{,'+hT  
} y*2R#jTA  
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