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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~5M"  
插入排序: [`P+{ R  
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package org.rut.util.algorithm.support; D_,}lsrb  
BH0@WG7F  
import org.rut.util.algorithm.SortUtil; Q7`}4c)  
/** tP2hU[7Z  
* @author treeroot 8W?/Sg`  
* @since 2006-2-2 m(nGtrQJm  
* @version 1.0 g7k|Ho-W  
*/ Oy$*ZG)  
public class InsertSort implements SortUtil.Sort{ ^9eJ)12pK  
=!_e(J  
/* (non-Javadoc) ^JF6L`Tp  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I%(`2 rD8G  
*/ #SQao;>  
public void sort(int[] data) { =LHE_ AA  
int temp; "Ko ^m(`  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); d?_Bll"  
} W?8 |h  
} KFHn)+*"  
} c@)k#/[[b  
M xUj7ae  
} Ji  SJi?  
?4wS/_C/  
冒泡排序: ;X6FhQ;{*0  
gQf'|%)AJ  
package org.rut.util.algorithm.support; !+& "y K@J  
uWR\#D'  
import org.rut.util.algorithm.SortUtil; uArs[e|f  
y4s]*?Wz  
/** > Zo_-,  
* @author treeroot *+h2,Z('a  
* @since 2006-2-2 6=2M[T  
* @version 1.0 ,EW-21  
*/ A:F*Y%ZW  
public class BubbleSort implements SortUtil.Sort{ $-Q,@Bztq  
"exph$  
/* (non-Javadoc) MGeHccqh2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N ~L3 9  
*/ ~p<o":k+Lv  
public void sort(int[] data) { }X94M7+->  
int temp; r-'(_t~FT  
for(int i=0;i for(int j=data.length-1;j>i;j--){ j?4k{?x  
if(data[j] SortUtil.swap(data,j,j-1); jgbUZP4J>  
} 4AB7uw  
} Q PgM<ns  
} hv te)  
} l)GV&V  
U'@eUY(Ov$  
} ZWaHG_ U)  
MrEyN8X  
选择排序: ~]BxM9  
 )]L:OE  
package org.rut.util.algorithm.support; w;}pebL:  
J_]?.V*A  
import org.rut.util.algorithm.SortUtil; !VU[=~  
A~&Tp  
/** {\ vj":  
* @author treeroot =xScHy{$  
* @since 2006-2-2 >t')ZSjRs  
* @version 1.0 n; ;b6s5  
*/ Wfgs[  
public class SelectionSort implements SortUtil.Sort { W&dYH 4O  
szN`"Yi){  
/* &S9Sl  
* (non-Javadoc) i]!CH2\  
* SD paW6(_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1?sR1du,  
*/ H Yt& MK  
public void sort(int[] data) { WgPpW!`  
int temp; ?it49  
for (int i = 0; i < data.length; i++) { `!Ei H<H}  
int lowIndex = i; 0\# uxzdhJ  
for (int j = data.length - 1; j > i; j--) { [xq"[*Evv  
if (data[j] < data[lowIndex]) { F`goYwA%  
lowIndex = j; )MqF~[k<-  
} ?3jOE4~aHr  
} Q`}1 B   
SortUtil.swap(data,i,lowIndex); *#{[9d  
} 91|=D \8aE  
} fl>*>)6pm  
+[@Ug`5M  
} 289teU  
HV ab14}E  
Shell排序: Cp(,+ dD  
}8J77[>/  
package org.rut.util.algorithm.support; +O>1 Ed  
ZOvMA]Rf  
import org.rut.util.algorithm.SortUtil; ?LAKH$t  
)$V}tr!  
/** bv ,_7UOG  
* @author treeroot l@7X gsey  
* @since 2006-2-2 .n1]Yk;,1  
* @version 1.0 ] )D\ws)a9  
*/ f@lRa>Z(Fm  
public class ShellSort implements SortUtil.Sort{ Tx"}]AyB6  
_D7MJT  
/* (non-Javadoc) ^,[V;3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e{@TR x  
*/ Q|Uq.UjY  
public void sort(int[] data) { Ym6zNb8 bQ  
for(int i=data.length/2;i>2;i/=2){ ]Ija,C!#  
for(int j=0;j insertSort(data,j,i); R06q~ >  
} U&#1qRm\h  
} ?r C^@)  
insertSort(data,0,1); 6?OH"!b2-}  
} KIO{6  
v&oE!s#  
/** M?pu7wa  
* @param data j&)"a,f  
* @param j Q)x`'[3"7W  
* @param i K| #%u2C  
*/ 6'd=% V  
private void insertSort(int[] data, int start, int inc) { ?h4-D:!$L  
int temp; @(2DfrC  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); J2H/z5YRJ4  
} \AV6;;}&  
} aW$( lf2;  
} m5Gt8Z 6a  
7Wub@Mp  
} H@Dj$U  
c`I`@Bed  
快速排序: ~3 4Ly  
Y%OE1F$6NN  
package org.rut.util.algorithm.support; O@St^o*A}  
DP`$gd  
import org.rut.util.algorithm.SortUtil; %9hzz5#  
o =)hUr  
/** l(|@ dp  
* @author treeroot zM?JLNs]<{  
* @since 2006-2-2 '#d`K.;_b.  
* @version 1.0 }I_/>58  
*/ xe5|pBT  
public class QuickSort implements SortUtil.Sort{ FaO1?.  
qXmkeidb&W  
/* (non-Javadoc) \P% E1c#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BhC.#u/   
*/ ]h8[b9$<")  
public void sort(int[] data) { rxtp?|v9  
quickSort(data,0,data.length-1); gE8p**LT+  
} 9qxB/5d_  
private void quickSort(int[] data,int i,int j){ N q %@(K  
int pivotIndex=(i+j)/2; 3gZ|^h6 +  
file://swap  boAu  
SortUtil.swap(data,pivotIndex,j); f%ude@E3  
}Jkz0JY~  
int k=partition(data,i-1,j,data[j]); C8i6ESmU  
SortUtil.swap(data,k,j); Kc~h  
if((k-i)>1) quickSort(data,i,k-1); :/'2@M  
if((j-k)>1) quickSort(data,k+1,j); 1?s]nU  
*cn,[  
} "i/ l'  
/** 3x2*K_A5:Q  
* @param data J*s!(J |Q  
* @param i Z>1\|j  
* @param j &t1?=F,]  
* @return m3zmyw}  
*/ |f+|OZY  
private int partition(int[] data, int l, int r,int pivot) { `!{m#BBT}  
do{ qzq_3^ 66  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); u2crL5^z2)  
SortUtil.swap(data,l,r); hd*bPj ;  
} (izGF;N+  
while(l SortUtil.swap(data,l,r); @C7if lo6  
return l; 9&e=s<6dO  
} 3B|?{U~  
Eshc"U  
} F&? &8.  
\]pRu"  
改进后的快速排序: []R`h*#  
c zTr_>  
package org.rut.util.algorithm.support; hkOhY3K5  
e@[9WnxYe  
import org.rut.util.algorithm.SortUtil; R$qp3I  
?`R;ZT)U-  
/** RK%N:!f q=  
* @author treeroot (3kz(6S  
* @since 2006-2-2 wxw3t@%mNm  
* @version 1.0 owYf1=G  
*/ et[n;nl>V  
public class ImprovedQuickSort implements SortUtil.Sort { m]t`;lr<  
yu8xTh$:  
private static int MAX_STACK_SIZE=4096; I75>$"$<  
private static int THRESHOLD=10; HPM ggRs  
/* (non-Javadoc) Ubtu?wRBW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zq ;YE  
*/   -58  
public void sort(int[] data) { KI&+Zw4VL  
int[] stack=new int[MAX_STACK_SIZE]; uA]Z"  
AWkXW l}  
int top=-1; aKi&2>c5>  
int pivot; d&mSoPf  
int pivotIndex,l,r; q1C) *8*g  
}"k+e^0^  
stack[++top]=0; t As@0`x9  
stack[++top]=data.length-1; 'n1-?T)  
'F3cvpc`  
while(top>0){ -"m4 A0  
int j=stack[top--]; <Z^P8nu  
int i=stack[top--]; ID+ o6/V8  
70s.  
pivotIndex=(i+j)/2; %6-5hBzZN  
pivot=data[pivotIndex]; u#TRm?s  
FdrH,  
SortUtil.swap(data,pivotIndex,j); _^{!`*S  
/F#_~9JXG  
file://partition C*O648yz[  
l=i-1; Skm$:`u;  
r=j; .Z[Bz7  
do{ cb ICO  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); "M e)'  
SortUtil.swap(data,l,r); =b\k$WQ_(  
} ]`[r=cG  
while(l SortUtil.swap(data,l,r); _ ," -25a  
SortUtil.swap(data,l,j); 6g\SJ O-;N  
Dw\)!,,i7U  
if((l-i)>THRESHOLD){ Vn:BasS%  
stack[++top]=i;  U~%V;*|4  
stack[++top]=l-1; >GRL5Iow  
} ,:RHhg  
if((j-l)>THRESHOLD){ rU^?Z  
stack[++top]=l+1; h!c6]D4!L  
stack[++top]=j; ^;on  
} tCkKJ)m  
if|j)h&  
} 6Xu^ cbD  
file://new InsertSort().sort(data); AGxtmBB;  
insertSort(data); iF.eBL%  
} .QwwGm  
/** Rg4'9I%B  
* @param data D%PrwfR  
*/ sY @S  
private void insertSort(int[] data) { ,mpvGvAI  
int temp; ?fO 2&)r  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Q i&!Ub]  
} y^M ~zOe  
} 'g3!SdaLF  
} [A@K)A$f  
RPb/U8  
} z:m`  
.#py5&`%  
归并排序: Z^Y_+)=s  
>.P/fnvJ  
package org.rut.util.algorithm.support; iw`,\V&  
-!X,M DO  
import org.rut.util.algorithm.SortUtil; <IiX_*  
d E0 `tX  
/** u!NY@$Wc  
* @author treeroot ?]JTrv"zp  
* @since 2006-2-2 B@R3j  
* @version 1.0 g>])O  
*/ #LP38 wE  
public class MergeSort implements SortUtil.Sort{ Ww8C}2g3  
v0~'`*|&  
/* (non-Javadoc) YMlnC7?_ /  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p&Os5zw;|  
*/ ~;m3i3D  
public void sort(int[] data) { w Pk\dyP  
int[] temp=new int[data.length]; 3['aK|qk.  
mergeSort(data,temp,0,data.length-1); <"Ox)XG3]W  
} } Mh@%2$  
&&(^;+  
private void mergeSort(int[] data,int[] temp,int l,int r){ Dgb@`oo  
int mid=(l+r)/2; 0+a-l[!p  
if(l==r) return ; 7d44i  
mergeSort(data,temp,l,mid); 9qhX\, h  
mergeSort(data,temp,mid+1,r); ^qn,b/>L  
for(int i=l;i<=r;i++){ 8M{-RlR  
temp=data;  s~A#B)wB  
} u@( z(P  
int i1=l; @P1#)  
int i2=mid+1; 6qCRM*V  
for(int cur=l;cur<=r;cur++){ -k$*@Hq  
if(i1==mid+1) r8o9C  
data[cur]=temp[i2++]; v[3QI7E3  
else if(i2>r) `s0`kp  
data[cur]=temp[i1++]; H9@24NFb  
else if(temp[i1] data[cur]=temp[i1++]; `v]|x,l+C  
else X/=*o;":  
data[cur]=temp[i2++]; >";I3S-t  
} 7Wd}H Z  
} 3Kv~lo^  
=5 a|'O  
} TLBIM  
av}Giz  
改进后的归并排序: Ya%-/u  
-i,=sZXB  
package org.rut.util.algorithm.support; sZ-A~X@g  
jH 4,-  
import org.rut.util.algorithm.SortUtil; OGDCC/  
GFq,Ca~  
/** q_5hKipd\b  
* @author treeroot 7W)*IJ  
* @since 2006-2-2 Yy,i,c`r  
* @version 1.0 ]c67zyX=%  
*/ K *<+K<Tp  
public class ImprovedMergeSort implements SortUtil.Sort { EWcqMD]4u  
3RwDIk?>%  
private static final int THRESHOLD = 10; ,*y\b|<j  
~9[^abz  
/* EAPLe{qw:q  
* (non-Javadoc) B+8lp4V9%  
* GmjTxNU@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bgi B*`z  
*/ xsPY#  
public void sort(int[] data) { SxAZ2|/-  
int[] temp=new int[data.length]; DdI V~CxD  
mergeSort(data,temp,0,data.length-1); a#U2y"  
} +>w %j&B  
e-4 Qw #cw  
private void mergeSort(int[] data, int[] temp, int l, int r) { <Mt>v2a3Y  
int i, j, k; G_5uO58  
int mid = (l + r) / 2; C(4r>TNm  
if (l == r) GKT^rc-YT-  
return; C0 RnBu  
if ((mid - l) >= THRESHOLD) *$+:Cbe-F  
mergeSort(data, temp, l, mid); JB}jt)ol%  
else ]J] ~i[  
insertSort(data, l, mid - l + 1); kMCg fL  
if ((r - mid) > THRESHOLD) E8`AU<  
mergeSort(data, temp, mid + 1, r); %^zGM^PD  
else `vMrlKq  
insertSort(data, mid + 1, r - mid); AW\#)Em  
UWf@(8  
for (i = l; i <= mid; i++) { ?y1G,0,  
temp = data; 9fj8r3 F#  
} K6..N\7  
for (j = 1; j <= r - mid; j++) { = Ff2  
temp[r - j + 1] = data[j + mid]; r_p4pxs  
} (^U 8wit/  
int a = temp[l]; U?WS\Jji3!  
int b = temp[r]; `~+1i5-}  
for (i = l, j = r, k = l; k <= r; k++) { 8c1ma  
if (a < b) { 4ayZ.`aK  
data[k] = temp[i++]; 4:50dj  
a = temp; 3-%F)@n  
} else { $-J=UT2m  
data[k] = temp[j--]; $K'A_G^  
b = temp[j]; #mFY?Zp)  
} ah8xiABa  
} [VL+X^  
} >3,t`Z:  
MlVVST  
/** fxcCz 5  
* @param data ?h1r6?Sug{  
* @param l i& phko}  
* @param i asLvJ{d8s  
*/ a6/$}lCq  
private void insertSort(int[] data, int start, int len) { Wh7}G   
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); xDtJ& 6uFw  
} $={^':Uh  
} !^h{7NmP[  
} :#pfv)W6t  
} 0Xe?{!@a  
1P '_EJ]M  
堆排序: wpW3%r;9  
:Qd{V3*]  
package org.rut.util.algorithm.support; Q"Ur*/-U  
[\|p~Qb)s  
import org.rut.util.algorithm.SortUtil; ymr#OP$<S  
4Ww.CkRG  
/** uY"Bgz:=d  
* @author treeroot :OFL@byS  
* @since 2006-2-2 K3xs=q]:@  
* @version 1.0 !#' y#  
*/ ~ V:@4P  
public class HeapSort implements SortUtil.Sort{ &i8UPp%  
JIYZ  
/* (non-Javadoc) 6Y 4I $[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8h=Rfa9  
*/ D?Y j5eOa  
public void sort(int[] data) { wFHz<i!jr&  
MaxHeap h=new MaxHeap(); _(&XqEX  
h.init(data); rF>7 >wq  
for(int i=0;i h.remove(); NR@n%p  
System.arraycopy(h.queue,1,data,0,data.length); So^;5tG  
} ]u(EEsG/  
_=s{,t &u  
private static class MaxHeap{ E#I^D/0  
6%8,OOS  
void init(int[] data){ ~UhTy~jya  
this.queue=new int[data.length+1]; g5,Bj  
for(int i=0;i queue[++size]=data; zK@DQ5  
fixUp(size); _w\A=6=q|  
} U$+G9  
} Kz`g Q|S  
`dpm{s n  
private int size=0; =u,8(:R]s  
D$W09ng-  
private int[] queue;  E qc,/  
N7WQ{/PSG  
public int get() { F\"`^`(O  
return queue[1]; XFx p^  
} < `/22S"  
NZh\{!  
public void remove() { $^XCI%DH  
SortUtil.swap(queue,1,size--); ='"hB~[  
fixDown(1); q4wS<, 3  
} I_\#(  
file://fixdown F]4JemSjK  
private void fixDown(int k) { (uk-c~T!u  
int j; kbHfdA  
while ((j = k << 1) <= size) { /O$7A7Tl  
if (j < size %26amp;%26amp; queue[j] j++; ja_.{Zv  
if (queue[k]>queue[j]) file://不用交换 y))) {X  
break; `ywI+^b  
SortUtil.swap(queue,j,k); 1[&V6=n  
k = j;  `[=3_  
} g AZe&"K  
} r`8>@2sW1  
private void fixUp(int k) { TODTR7yGo  
while (k > 1) { 8:=EA3  
int j = k >> 1; nR2pqaKc  
if (queue[j]>queue[k]) dhAkD-Lh  
break; l)^sE)  
SortUtil.swap(queue,j,k); \F }s"#  
k = j; pm 4"Q!K  
} 2[; 4D/`*  
} MMYV8;c  
!9/1_Bjv  
} zK P{A Sk  
TcP (?v  
} M ~uX!bDH  
8FmRD  
SortUtil: P t)Ni  
km(Mv  
package org.rut.util.algorithm; [!k#au+#c  
f L}3I(VK  
import org.rut.util.algorithm.support.BubbleSort; PI5a 'k0F  
import org.rut.util.algorithm.support.HeapSort; q|N/vkqPz  
import org.rut.util.algorithm.support.ImprovedMergeSort; n:#gKR-J  
import org.rut.util.algorithm.support.ImprovedQuickSort; 2Y`C\u  
import org.rut.util.algorithm.support.InsertSort; (i"@{[IP  
import org.rut.util.algorithm.support.MergeSort; s:fy *6=[Z  
import org.rut.util.algorithm.support.QuickSort; Gd]!D~[1  
import org.rut.util.algorithm.support.SelectionSort; Gop;!aV1*  
import org.rut.util.algorithm.support.ShellSort; 0bt"U=x4  
F*bmV>Qq  
/** k^vsQ'TD  
* @author treeroot =(-oQ<@v  
* @since 2006-2-2 9\aR{e,1  
* @version 1.0 !RJuH;8  
*/ $<~o,e-4  
public class SortUtil { 5dPPm%U{  
public final static int INSERT = 1; {);S6F$[3  
public final static int BUBBLE = 2; =y>g:}G7  
public final static int SELECTION = 3; ^Iz(V2  
public final static int SHELL = 4; b/I_iJ8t  
public final static int QUICK = 5; b\dzB\,&  
public final static int IMPROVED_QUICK = 6; S5W*,?  
public final static int MERGE = 7; F_?aoP&5  
public final static int IMPROVED_MERGE = 8; (q@DBb4  
public final static int HEAP = 9; 'rX!E,59  
')8c  
public static void sort(int[] data) { SG)hrd  
sort(data, IMPROVED_QUICK); RJz$$,RU  
} ,Qd;t  
private static String[] name={ T/A[C  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" vuOixAkw  
}; QNk\y@yKw  
+ \DGS  
private static Sort[] impl=new Sort[]{ &6yh4-(7  
new InsertSort(), U1Z.#ETnM  
new BubbleSort(), \G!TC{6  
new SelectionSort(), {NS6y\,  
new ShellSort(), exn Fy-  
new QuickSort(), vp4l g1/  
new ImprovedQuickSort(), }=+J&cR  
new MergeSort(), CPw=?<db  
new ImprovedMergeSort(), rr@S|k:|  
new HeapSort() 123 6W+  
}; )o:%Zrk  
^ RS?y8  
public static String toString(int algorithm){ LFi8@  
return name[algorithm-1]; tqnvC UIE  
} bpQ5B'9  
U^ec g{  
public static void sort(int[] data, int algorithm) { W!R}eLf@  
impl[algorithm-1].sort(data); .5i\L OTd  
} Jj_ t0"  
Ic%c%U=i  
public static interface Sort { ': }  
public void sort(int[] data); SnK#YQCDt  
} wVSk.OOB  
vy <(1\  
public static void swap(int[] data, int i, int j) { YH0=Y mU#X  
int temp = data; X0h`g)Bbf  
data = data[j];  8>}k5Qu  
data[j] = temp; B.e3IM0  
} 7 )2Co[t  
} XS L*e  
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