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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。 v& bG`\!  
插入排序: 2vWn(6`  
/'VbV8%  
package org.rut.util.algorithm.support; 0(*L)s,5  
f7y.##WG  
import org.rut.util.algorithm.SortUtil; v2_` iwE  
/** J#t-." f6^  
* @author treeroot tv26eK 38  
* @since 2006-2-2 ,J8n}7aI  
* @version 1.0 ^qnmKA>"F  
*/ m7DKC,  
public class InsertSort implements SortUtil.Sort{ J\P6  
*MB >,HU  
/* (non-Javadoc) g(Q1d-L4e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K|YB)y  
*/ aCI3Tx&2qT  
public void sort(int[] data) { K{{_qFj@<y  
int temp; zCuB+r=C  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); `CI_zc=jx  
} 2;u i'B  
} a ydNSgu  
} ^ H&U_  
> K?OsvX  
} [}]yJ+)  
rlD!%gG2x  
冒泡排序: *= ?|n   
15hqoo9!  
package org.rut.util.algorithm.support; Fj(GyPFG  
/0 4US5En  
import org.rut.util.algorithm.SortUtil; X\/M(byn  
#-@u Lc  
/** .p,VZ9  
* @author treeroot 6y~F'/ww  
* @since 2006-2-2 Rq%Kw > {&  
* @version 1.0 Q2D!Agq=D  
*/ N -]/MB 8  
public class BubbleSort implements SortUtil.Sort{ W"^=RY  
5|nc^ 12  
/* (non-Javadoc) <l $ d>,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X.#)CB0c1Q  
*/ P6R_W  
public void sort(int[] data) { RFy MRE!?  
int temp; y;uR@{  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 31@Lr[!  
if(data[j] SortUtil.swap(data,j,j-1); c~?Zmdn:  
} r`.N?  
} o$buoGSPc  
} q+y\pdhdO  
} &'x~<rx  
kJp~'\b  
} tw>2<zmSi%  
zD79M  
选择排序: p*&0d@'r  
?UZt30|1  
package org.rut.util.algorithm.support; Z sTtSM\Ac  
KGHSEZi]  
import org.rut.util.algorithm.SortUtil; Vh;zV Y  
/rnI"ze`  
/** qfyZda0d  
* @author treeroot |7tD&9<  
* @since 2006-2-2 =I'3C']Z W  
* @version 1.0 o[T+/Ej&  
*/ !6T"J!F#  
public class SelectionSort implements SortUtil.Sort { ~?AEtl#&"  
C=/B\G/.9  
/* {^ b2nOMv  
* (non-Javadoc) ^Aq0<  
* G$+v |z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $KO2+^%y  
*/ LWN {  
public void sort(int[] data) { jb -kg</A  
int temp; 67YC;J]n=z  
for (int i = 0; i < data.length; i++) { o^\Pt<~W  
int lowIndex = i; 0(D^NtB7  
for (int j = data.length - 1; j > i; j--) { /v8Q17O?e  
if (data[j] < data[lowIndex]) { IB/3=4n^|  
lowIndex = j; *iE tXv  
} a+E&{p V  
} Ve3z5d:^  
SortUtil.swap(data,i,lowIndex); UtQey ;w  
}  ir6' \  
} *[3xc*5F/A  
_!R$a-  
} 15\m.Ix  
^AS \a4`/  
Shell排序: :x)H!z P  
&)%+DUV|  
package org.rut.util.algorithm.support; H<Oo./8+  
_*fNa!@hY  
import org.rut.util.algorithm.SortUtil; VN0We<\Z  
t?W}=%M[  
/** ViPC Yt`of  
* @author treeroot X#lNS+&='  
* @since 2006-2-2 P5h|* ?=  
* @version 1.0 d9#Vq=H /  
*/ xzm]v9k&  
public class ShellSort implements SortUtil.Sort{ z%%O-1   
W]9*dabem  
/* (non-Javadoc) jO-?t9^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @h%V:c  
*/ 4VWk/HK-!  
public void sort(int[] data) { LH8jT  
for(int i=data.length/2;i>2;i/=2){ RZm%4_p4s  
for(int j=0;j insertSort(data,j,i); [@vz0!@s5  
} N Qk aW)  
} GiV %Hcx  
insertSort(data,0,1); zTF{ g+  
} O?JJE8~']  
NXU:b"G S  
/** V&M*,#(?  
* @param data }}JMwT  
* @param j _rT\?//B  
* @param i  `Vb  
*/ ]:<! (  
private void insertSort(int[] data, int start, int inc) { h[ DNhR  
int temp; T{k P9 4  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); <v:VA!]  
} 5ilGWkb`'X  
} N+|NI?R?}  
} GM%+yS}(P  
n|w+08c"  
} 1F^Q*t{  
9-KhJq%  
快速排序: }}AIpYp,P  
,c p2Fac  
package org.rut.util.algorithm.support; FzT.9Vz7  
U(#<D7}  
import org.rut.util.algorithm.SortUtil; {ez $kz  
t4WB^dHYp  
/** 5p;AON  
* @author treeroot 'o >)E>  
* @since 2006-2-2 K}~$h,n  
* @version 1.0 zX>W 8P  
*/ >lQo _p(;  
public class QuickSort implements SortUtil.Sort{ 1- KNXGb'  
KA5)]UF`l  
/* (non-Javadoc) gg'1q3OjM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~VGnE:  
*/ zfIo] M`  
public void sort(int[] data) { yn4T!r "  
quickSort(data,0,data.length-1); xM*_1+<dT$  
} B$4*U"tk  
private void quickSort(int[] data,int i,int j){ 3S0.sU~_U  
int pivotIndex=(i+j)/2; U0~_'&Fe  
file://swap ?+yr7_f3*  
SortUtil.swap(data,pivotIndex,j); mmAm@/  
9%!h/m>rW  
int k=partition(data,i-1,j,data[j]); hi7_jl6  
SortUtil.swap(data,k,j); ToXWFX  
if((k-i)>1) quickSort(data,i,k-1); `fu_){  
if((j-k)>1) quickSort(data,k+1,j); @I _cwUO  
I{Zb/}k-  
} RLmOg{L  
/** WE<?y_0y&  
* @param data N9e'jM>Oos  
* @param i "TV'}HH  
* @param j 4CNrIF@  
* @return $*yYmF  
*/ *]6g-E?:@  
private int partition(int[] data, int l, int r,int pivot) { o.+;]i}D  
do{ Dp@XAyiA[  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ~ZHjP_5Q  
SortUtil.swap(data,l,r); PobX;Z  
} gq+SM  i=  
while(l SortUtil.swap(data,l,r); 1K72}Gj)ZL  
return l; @IT[-d  
} j]Auun  
$^Fl*:6  
} p=8Qv  
*;7y5ZJ  
改进后的快速排序: 'solCAy  
:cT)M(o  
package org.rut.util.algorithm.support; ~P4C`Q1PT#  
$*Ucfw1T  
import org.rut.util.algorithm.SortUtil; /F*Y~>*% 1  
h [TwaR  
/** h3ygL"k  
* @author treeroot jh5QIZf=  
* @since 2006-2-2 44]s`QyG  
* @version 1.0 o<`vh*U@,4  
*/ C"hN2Z!CD|  
public class ImprovedQuickSort implements SortUtil.Sort { @KN+)qP  
#lYyL`B+~  
private static int MAX_STACK_SIZE=4096; 6EqA Y`y  
private static int THRESHOLD=10; TBj2(Z  
/* (non-Javadoc) X8Z?G,[H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cG|fau<G  
*/ U( YAI%O  
public void sort(int[] data) { +&GV-z~o  
int[] stack=new int[MAX_STACK_SIZE]; #NS|9jW  
6x+ujUBkK  
int top=-1; i_Kwxn$  
int pivot; iSW2I~PD  
int pivotIndex,l,r; d t/AAk6  
0YH5B5b  
stack[++top]=0; =7Ln&tZ  
stack[++top]=data.length-1; }0'=}BE  
3]Z1kB  
while(top>0){  N5 ME_)  
int j=stack[top--]; Ltlp9 S  
int i=stack[top--]; VUb>{&F[  
q6zVu(  
pivotIndex=(i+j)/2; 7CIN!vrC|1  
pivot=data[pivotIndex]; /x VHd  
@CprC]X  
SortUtil.swap(data,pivotIndex,j); aukcO ;oG<  
tpfgUZ{  
file://partition Z}W{ iD{  
l=i-1; fr17|#L+s  
r=j; ( }-*irSsj  
do{ HiCh:IP7>/  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); EX8JlA\-W  
SortUtil.swap(data,l,r); 5mH [|_  
} _^NX`<&  
while(l SortUtil.swap(data,l,r); > p`,  
SortUtil.swap(data,l,j); mH o#"tc  
,7{|90'V<  
if((l-i)>THRESHOLD){ ~q$]iwwqT  
stack[++top]=i; [FFr}\}bY  
stack[++top]=l-1; x/|W;8g4  
} 'jev1u[  
if((j-l)>THRESHOLD){ -Q WvB  
stack[++top]=l+1; !09)WtsEfx  
stack[++top]=j; E^F"$Z" N  
} DfXkLOGik  
5`;SI36"  
} 4TtC~#D:  
file://new InsertSort().sort(data); 3I)~;>meo  
insertSort(data); N*Y[[N(  
} K-qWT7<  
/** u]^ s2v  
* @param data qeZG/\,  
*/ GQ2GcX(E(  
private void insertSort(int[] data) { aZ#FKp^8H  
int temp; rRTKF0+  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); |IgR1kp+.  
} 1d^~KBfv  
} W .a>K$  
} byHc0ktI\  
i3-5~@M  
} 2)}n"ibbT  
MxTJgY  
归并排序: ]OAU&t{  
Z@~gN5@,M  
package org.rut.util.algorithm.support; Kb~nC6yJc  
_4{0He`q  
import org.rut.util.algorithm.SortUtil; 73Dxf -  
,Py\Cp=Dw  
/** sh/ ,"b2!P  
* @author treeroot |G j.E  
* @since 2006-2-2 _@5Xmr  
* @version 1.0 _3/u#'m0  
*/ L&\W+k  
public class MergeSort implements SortUtil.Sort{ ym;]3<I?I[  
l*CulVX  
/* (non-Javadoc) g2OnLEF]s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pPReo)  
*/ ~q>jXi  
public void sort(int[] data) { :;$MUOps  
int[] temp=new int[data.length]; E-A9lJWr  
mergeSort(data,temp,0,data.length-1); TTf j 5  
} }m:paB"3  
pb!2G/,.[  
private void mergeSort(int[] data,int[] temp,int l,int r){ :~-:  
int mid=(l+r)/2; >a;a8EA<O  
if(l==r) return ;  f<o|5r  
mergeSort(data,temp,l,mid); 35h|?eN_m!  
mergeSort(data,temp,mid+1,r); `?VK(<w0q  
for(int i=l;i<=r;i++){ Gb')a/  
temp=data; 9z,sn#-t  
} O4rjGTRF  
int i1=l; &4Z8df!  
int i2=mid+1; >d 5-if  
for(int cur=l;cur<=r;cur++){ {`HbpM<=m]  
if(i1==mid+1) -rDfDdT  
data[cur]=temp[i2++]; g=:o'W$@  
else if(i2>r) #2=l\y-#  
data[cur]=temp[i1++]; ~WrpJjI[  
else if(temp[i1] data[cur]=temp[i1++]; pte\1q[N  
else q <}IO  
data[cur]=temp[i2++]; h#1:ypA6l  
} [^"}jbn/  
} =?]`Xo,v~  
,Yag! i>;  
} RDps{),E;d  
k>i88^kPV  
改进后的归并排序: S|tD8A  
Z%~}*F}7X  
package org.rut.util.algorithm.support;  ^B"LT>.[  
(Mc{nFqS  
import org.rut.util.algorithm.SortUtil; (Mv~0ShakO  
6(rm%c  
/** 8\J$\Edv  
* @author treeroot l;-2hZ  
* @since 2006-2-2 Tzd#!Lvm:,  
* @version 1.0 ~-"CU:$o  
*/ h;=~%2Y  
public class ImprovedMergeSort implements SortUtil.Sort { F:zmO5L5  
?e%*q^~Cu  
private static final int THRESHOLD = 10; )U/Kz1U  
L7ae6#5.  
/* b+Q{Z*  
* (non-Javadoc) +2[0q% i  
* 9KK^1<46c  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RHsVG &<j  
*/ D#nHg  
public void sort(int[] data) { <Zva  
int[] temp=new int[data.length]; 6 ;'s9s"  
mergeSort(data,temp,0,data.length-1); 8UB2 du@?  
} 'IU3Xu[-.  
4KH'S'eR  
private void mergeSort(int[] data, int[] temp, int l, int r) { (-<hx~  
int i, j, k; '`8 ^P  
int mid = (l + r) / 2; o0Teect=  
if (l == r) ru:"c^W:[  
return; G[}v?RLI  
if ((mid - l) >= THRESHOLD) mJ%^`mrI  
mergeSort(data, temp, l, mid); <*vR_?!  
else F`KXG$  
insertSort(data, l, mid - l + 1); >p&"X 2 @  
if ((r - mid) > THRESHOLD) &5}YTKe}|  
mergeSort(data, temp, mid + 1, r); ]ty$/{hx'  
else j32*9  
insertSort(data, mid + 1, r - mid); taDe^Ist j  
8{Wl   
for (i = l; i <= mid; i++) { +B{u,xgg  
temp = data; hUpour |b  
} E}Cz(5  
for (j = 1; j <= r - mid; j++) { [kJ;Uxncz~  
temp[r - j + 1] = data[j + mid]; p$"~v A .  
} !S~)U{SSK  
int a = temp[l]; D)MFii1J~  
int b = temp[r]; (jKqwVs.:  
for (i = l, j = r, k = l; k <= r; k++) { F=5+JjrX  
if (a < b) { )]n>.ZmLCB  
data[k] = temp[i++]; g Cp`J(2v:  
a = temp; kNP-+o  
} else { Vc0j)3  
data[k] = temp[j--]; Z71_D  
b = temp[j]; {~&]  
} IlF_g`  
} X$<pt,}%  
} U_jW5mgsG  
Mn5(Kw?o2J  
/** @l3&vt2=J  
* @param data :TVo2Zm[@  
* @param l FOD'&Yb&  
* @param i e"1mdw"  
*/ ^/%o I;O{  
private void insertSort(int[] data, int start, int len) { wsdZwik  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); sudh=_+>  
} #@nPB.  
} !"FEp  
} H/t0#  
} \[!{tbK`2  
>07i"a  
堆排序: i`YZ;L L  
G%Lt>5*!nE  
package org.rut.util.algorithm.support; XN-1`5:4I  
<e&v[  
import org.rut.util.algorithm.SortUtil; M19O^P>[  
0aq{Y7sYU  
/** Dh m ;K$T  
* @author treeroot 4~Q<LEly  
* @since 2006-2-2 p7+>]sqX  
* @version 1.0 !pfpT\i]N:  
*/ C!_=L?QT^  
public class HeapSort implements SortUtil.Sort{ eG+$~\%Fub  
`?T::&`  
/* (non-Javadoc) YS4"TOFw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q?hf2iw  
*/ %#fjtbeB  
public void sort(int[] data) { J_a2DM6d  
MaxHeap h=new MaxHeap(); 51% Rk,/o  
h.init(data); *s, bz.[  
for(int i=0;i h.remove(); ;7[DFlS\P  
System.arraycopy(h.queue,1,data,0,data.length); .`*;AT  
} `C7pM  
wBlE!Pm  
private static class MaxHeap{ t .&JPTK-H  
<=!t!_  
void init(int[] data){ o^5UHFxTCB  
this.queue=new int[data.length+1]; g[y&GCKY!=  
for(int i=0;i queue[++size]=data; Ce//; Op  
fixUp(size); @@a#DjE%/  
} Bd*Ok]  
} ^69(V LK  
TN Z -0  
private int size=0; -~sW@u)O  
f*V^HfiQb  
private int[] queue; p%Q{Rqc)  
e`B!)Sr  
public int get() { x`2dN/wDhf  
return queue[1]; 5T"h7^}e  
} -5os0G80  
zn'Mi:O'p  
public void remove() { '?90e4x3/  
SortUtil.swap(queue,1,size--); y)fz\wk  
fixDown(1); F" G+/c/L  
} FYNUap,A  
file://fixdown { zL4dJw  
private void fixDown(int k) { .$f0!` t  
int j; 8\)4waz$  
while ((j = k << 1) <= size) { \{(cz/]G/  
if (j < size %26amp;%26amp; queue[j] j++; ^tyqc8&  
if (queue[k]>queue[j]) file://不用交换 H[R6 ?H@$F  
break; dtQ3iuV %  
SortUtil.swap(queue,j,k); /2r&ga&  
k = j; fyZtwl@6w#  
} dXWG`G_  
} e2xKo1?I  
private void fixUp(int k) { F)l1%F Cm  
while (k > 1) { ,LOx!  
int j = k >> 1; -R$Q`Xw  
if (queue[j]>queue[k]) Us6~7L00  
break; lh\`9F:  
SortUtil.swap(queue,j,k); uI)z4Z  
k = j; +CQIm!Sp  
} g5nL7;`N  
} >0:=<RW  
|+-b#Sa9  
} Nog{w  
JBV 06T_4o  
} #VZ-gy4$\B  
.i7"qq.M  
SortUtil: ;M+~ e~  
{6}$XLV3l  
package org.rut.util.algorithm; (-o}'l'mo  
zYis~ +  
import org.rut.util.algorithm.support.BubbleSort; D.F1^9Q  
import org.rut.util.algorithm.support.HeapSort; 3ug>,1:6-  
import org.rut.util.algorithm.support.ImprovedMergeSort; 2_6@&2  
import org.rut.util.algorithm.support.ImprovedQuickSort; s ldcI@Z  
import org.rut.util.algorithm.support.InsertSort; f'j<v  
import org.rut.util.algorithm.support.MergeSort; ASS<XNP  
import org.rut.util.algorithm.support.QuickSort; 80U(q/H%9  
import org.rut.util.algorithm.support.SelectionSort; )Zvn{  
import org.rut.util.algorithm.support.ShellSort; * P12d  
rv~OfL  
/** I'J-)D`  
* @author treeroot T[ zEAj  
* @since 2006-2-2 \  6Y%z  
* @version 1.0 6m9\0)R  
*/ DI :  
public class SortUtil { `'rvDaP  
public final static int INSERT = 1; xM&`>`;^e  
public final static int BUBBLE = 2; +D h?MQt?  
public final static int SELECTION = 3; =4/K#cQ  
public final static int SHELL = 4; %u?A>$Jn  
public final static int QUICK = 5; P?=}}DI  
public final static int IMPROVED_QUICK = 6; w!UIz[ajI  
public final static int MERGE = 7; 0b=00./o  
public final static int IMPROVED_MERGE = 8; 9WL$3z'*  
public final static int HEAP = 9; s_!F`[  
Tn'o$J  
public static void sort(int[] data) { o~x49%X<c  
sort(data, IMPROVED_QUICK); q ) e* eN  
} ) Cm95,Y  
private static String[] name={ {ZUgyGE{  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 7%|HtBXv^  
}; X-yS9E  
fHF*#  
private static Sort[] impl=new Sort[]{ U@".XIDQ  
new InsertSort(), W 6R/{H  
new BubbleSort(), VkC1\L6  
new SelectionSort(), gue~aqtJ  
new ShellSort(), ()_^:WQO?  
new QuickSort(), xn<x/e  
new ImprovedQuickSort(), w\>@> *E>  
new MergeSort(), T#YJ5Xw  
new ImprovedMergeSort(), F@xKL;'N74  
new HeapSort() ?KFj=Yo  
}; |v"&Y  
U uSCqI};  
public static String toString(int algorithm){ |Mnc0Fgvy,  
return name[algorithm-1]; 8$ _8Yva"e  
} _.GHtu/I  
+qa^K%K  
public static void sort(int[] data, int algorithm) { DbN_(mC  
impl[algorithm-1].sort(data); Vpxsg CS  
} c*V/2" 5  
Q/l388'  
public static interface Sort { 0fw>/"v  
public void sort(int[] data); /6'5uP   
} )4FW~o<i  
l=>FoJf!*<  
public static void swap(int[] data, int i, int j) { Pu2cU5n  
int temp = data; P7 qzZ  
data = data[j]; XTq+  9  
data[j] = temp; Yx"~_xA/u  
} J'yiVneMw  
} 4='/]z  
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3+5=?,请输入中文答案:八 正确答案:八