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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。 VQ;'SY:`  
插入排序: E<'V6T9bi  
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package org.rut.util.algorithm.support; 0-:dzf  
7Qd boEa  
import org.rut.util.algorithm.SortUtil; yG2rAG_ G&  
/** /^$n&gI  
* @author treeroot + zf`_1+)U  
* @since 2006-2-2 Nz>xilU'  
* @version 1.0 MIY`"h0*  
*/ 7U:{=+oLR  
public class InsertSort implements SortUtil.Sort{ l p|`n  
D< 0))r  
/* (non-Javadoc) umN4|X  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #xw3a<z?u  
*/ <6&Z5mpm$w  
public void sort(int[] data) { )cU$I)  
int temp; ]fSpG\yU  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); [I gqK5@  
} NInZ~4:  
} <B!DwMk;.  
} a5pXn v]A  
Ec&_&  
} B & ]GGy  
pGr4b:N  
冒泡排序: Y8c,+D,Ww  
#'y&M t  
package org.rut.util.algorithm.support; nF]zd%h  
Q]<6voyy  
import org.rut.util.algorithm.SortUtil; yIg^iZD  
/vpwpVHIpG  
/** T1%}H3  
* @author treeroot X6=o vm  
* @since 2006-2-2 % CQv&d2  
* @version 1.0 >J#/IjCW  
*/ rDGrq9  
public class BubbleSort implements SortUtil.Sort{ :i|Bz6Ht4  
e ^ZY  
/* (non-Javadoc) F`1J&S;C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }*S`1IWMj  
*/ `dhBLAt  
public void sort(int[] data) { 7rG+)kHG  
int temp; ! F<::fN  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 4'td6F  
if(data[j] SortUtil.swap(data,j,j-1); q2s=>J';  
} 1jE {]/Y7&  
} 'F3@Xh  
} F$i 6  
} *S?'[PS]1  
' H4m"  
} O$N;a9g  
Zu 4au<  
选择排序: P=7X+}@  
ZQn>+c2%!  
package org.rut.util.algorithm.support; 6Hfv'X5E`Z  
#fk1'c2  
import org.rut.util.algorithm.SortUtil; ].sD#~L_  
nm_4E8&X  
/** (EjlnG}5l  
* @author treeroot ,3!TyQ \m'  
* @since 2006-2-2 Ti7 @{7>  
* @version 1.0 D&i, `j  
*/ f$vU$>+[  
public class SelectionSort implements SortUtil.Sort { ryqu2>(   
?H>^X)Ph  
/* <~aKwSF[wW  
* (non-Javadoc) Pz\ByD  
* %gj7KF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YT,yRV9#  
*/ `\'V]9wS  
public void sort(int[] data) { 6:AEg  
int temp; fs-LaV 0  
for (int i = 0; i < data.length; i++) {  \< dg  
int lowIndex = i; eI-SWwmv/u  
for (int j = data.length - 1; j > i; j--) { M8$e MS1  
if (data[j] < data[lowIndex]) { ; 6PRi/@  
lowIndex = j; Bsha)<  
} G/#m. =t  
} 5<Uh2c  
SortUtil.swap(data,i,lowIndex); HXC\``E  
} PKC0Dt;F.  
} 78 ]Kv^l^_  
^Wn+G8n  
} ;$e)r3r`LV  
kR:kn:  
Shell排序: 6b$C/  
s= 5 k7  
package org.rut.util.algorithm.support; 5 8 7;2  
=f [/Pv  
import org.rut.util.algorithm.SortUtil; C`.eJF  
[h !i{QD  
/** fD3'Ye<R  
* @author treeroot d R=0K  
* @since 2006-2-2 Lusd kc7  
* @version 1.0 <QC7HR  
*/ ~j(vGO3JB  
public class ShellSort implements SortUtil.Sort{ ,>za|y<n  
*SIYZE'  
/* (non-Javadoc) `& h-+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e6mm;@F>  
*/ 12?!Z  
public void sort(int[] data) { H9i7y,[*  
for(int i=data.length/2;i>2;i/=2){ d:>'c=y  
for(int j=0;j insertSort(data,j,i); t&F:C  
} 5S_fvW;  
} oylQCbT   
insertSort(data,0,1); kFY2VPP~  
} 68(^*  
+P Dk>PdEt  
/** >HRNB&]LdP  
* @param data /#SfgcDt  
* @param j HY1K(T  
* @param i B|yz~wu S  
*/ 3$q#^UvD  
private void insertSort(int[] data, int start, int inc) { g|->W]q@;  
int temp; );_/0:  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); _| cSXZ|  
} >)='.aR<  
} K*2s-,b *  
} }{j@q~w>$  
X }i2qv  
} at{p4Sl  
rXT?w]4  
快速排序: SZLugyZ2Y  
Y\WVkd(+G  
package org.rut.util.algorithm.support; zPybP E8  
0^nF : F  
import org.rut.util.algorithm.SortUtil; r&B0 -7r  
lMh>eX  
/** Ok@`<6v  
* @author treeroot 2Xk;]-T!  
* @since 2006-2-2 zVf79UrK  
* @version 1.0 ` - P1Y  
*/ J$5 G8<d>  
public class QuickSort implements SortUtil.Sort{ }CMGK{  
,7:-V<'Yv  
/* (non-Javadoc) = M4:nt  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E`(=n(Qu  
*/ >B~? }@^Gk  
public void sort(int[] data) { ,Eh]Zv1 AE  
quickSort(data,0,data.length-1); mD ZA\P_  
} oIx|)[  
private void quickSort(int[] data,int i,int j){ (!N2,1|  
int pivotIndex=(i+j)/2; S ~h*U2  
file://swap febn?|@  
SortUtil.swap(data,pivotIndex,j); M  |h B[  
\,X)!%6kZ  
int k=partition(data,i-1,j,data[j]); !X$19"  
SortUtil.swap(data,k,j); 4%8den,|  
if((k-i)>1) quickSort(data,i,k-1); ~$C<^?"b  
if((j-k)>1) quickSort(data,k+1,j); Oso**WUOZ&  
 <)~-]  
} *s" OqTM]x  
/** 1P1h);*Z  
* @param data ~8mz.ZdY  
* @param i +[MHl  
* @param j ^xNzppz`]C  
* @return 4@Db $PHs  
*/ NziCN*6  
private int partition(int[] data, int l, int r,int pivot) { N[\J#x!U  
do{ K$qY^oyQFw  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Hd\oV^ >  
SortUtil.swap(data,l,r); 3Og}_  
} ty#6%  
while(l SortUtil.swap(data,l,r); {'h&[f>zcQ  
return l; <bo)p6S&  
} Ly^bP>2i  
nh@JGy*L  
} l5VRdZ4Uf  
6s~B2t:Y  
改进后的快速排序: b-#{O=B  
B|"i`{>  
package org.rut.util.algorithm.support; 3T0-RP*  
Il*!iX|23<  
import org.rut.util.algorithm.SortUtil; n YUFRV$  
r5nHYV&7  
/** uHZ4 @ w:  
* @author treeroot S#8)N`  
* @since 2006-2-2 wf]?:'}  
* @version 1.0 1|xe'w{  
*/ !a:e=b7g  
public class ImprovedQuickSort implements SortUtil.Sort { ;Bz| hB{  
~BuBma_   
private static int MAX_STACK_SIZE=4096; ]jVE  
private static int THRESHOLD=10; \a|~#N3?  
/* (non-Javadoc) e CN:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fw,,cu`YA  
*/ UxHI6,b  
public void sort(int[] data) { |k*bWuXgLs  
int[] stack=new int[MAX_STACK_SIZE]; u1y>7,Z6W  
&Lt$~}*&6  
int top=-1; ^c}3o|1m(  
int pivot; _^(1Qb[  
int pivotIndex,l,r; X,3\c:  
=0EKrG  
stack[++top]=0; +CdUr~6  
stack[++top]=data.length-1; .4"BN<9  
fu~iF  
while(top>0){ H{5,  -x  
int j=stack[top--]; d1c+Ii%  
int i=stack[top--]; >%92,hg  
ey[Z<i1  
pivotIndex=(i+j)/2; :ZB.I(v  
pivot=data[pivotIndex]; p\;8?x  
D- C]0Jf3  
SortUtil.swap(data,pivotIndex,j); ^ /G ;  
6AY( /N8V  
file://partition qQDe'f~  
l=i-1; T|BlFJ0"  
r=j; [DeDU:  
do{ g7hI9(8+  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); _)= e`9%  
SortUtil.swap(data,l,r); nZ'jjS[!  
} e4Ibj/  
while(l SortUtil.swap(data,l,r); ySiZ@i4  
SortUtil.swap(data,l,j); 9RJ#zUK  
o*7NyiJ@z  
if((l-i)>THRESHOLD){ xL.m<XDL  
stack[++top]=i; )ADI[+KW  
stack[++top]=l-1; 1U/9=b  
} ?b(wZ-/  
if((j-l)>THRESHOLD){ J`[jub  
stack[++top]=l+1; pl@K"PRE  
stack[++top]=j; o@360#njF  
} ;g#nGs>  
#U%HG TE0  
} T`]%$$1s  
file://new InsertSort().sort(data); QwG_-  
insertSort(data); S`  U,  
} "pK<d~Wu  
/** 19O    
* @param data 7n84`|=  
*/ &Lzd*}7  
private void insertSort(int[] data) { kzCJs  
int temp; \/ri|fm6l#  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 5({_2meJ:  
} ;! ?l8R  
} &gT@oS{  
} x 4LPrF1  
j`@`M*)GB  
} ZZHQ?p-  
v8C($<3%  
归并排序: d#d&CJAfr  
t%^&b'/Z  
package org.rut.util.algorithm.support; ,37<F XX,  
&J9 + 5L8  
import org.rut.util.algorithm.SortUtil; G{X7;j e  
&D-z|ZjgHi  
/** q6E 'W" Q  
* @author treeroot [8Z#HjhQ  
* @since 2006-2-2 K@[Hej6d  
* @version 1.0 sxuP"4  
*/ sb_/FE5e  
public class MergeSort implements SortUtil.Sort{ E%8uQ2p(  
2auJp .  
/* (non-Javadoc) fXnewPr=#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jp4-w(  
*/ vA6onYjA  
public void sort(int[] data) { =Sr<d|\O  
int[] temp=new int[data.length]; Jh%SenP_oP  
mergeSort(data,temp,0,data.length-1); 1K|F;p  
} ]3 GO_tL  
$f+I#uJ  
private void mergeSort(int[] data,int[] temp,int l,int r){ Fo ;J3<U)  
int mid=(l+r)/2; L|(U%$  
if(l==r) return ; &F7_0iA P(  
mergeSort(data,temp,l,mid); t(6i4c>  
mergeSort(data,temp,mid+1,r); Y%TY%"<  
for(int i=l;i<=r;i++){ \AoqOC2u  
temp=data; "D4% A!i  
} >e-0A  
int i1=l; E^{!B]/oP  
int i2=mid+1; GZx*A S]+  
for(int cur=l;cur<=r;cur++){ Ke:EL;*8k  
if(i1==mid+1) ~W4SFp  
data[cur]=temp[i2++]; yEh{9S%6p  
else if(i2>r) If&y 5C  
data[cur]=temp[i1++]; 3gJZlH5IR  
else if(temp[i1] data[cur]=temp[i1++]; (igB'S5wf  
else 6'uCwAQU  
data[cur]=temp[i2++]; aEa+?6;D  
} bJ6C7-w:wa  
} ,|z zq@fk  
g$Vr9MH  
} k}}'f A  
)ryP K"V  
改进后的归并排序: 0/!0W%f[}  
sc# EL~  
package org.rut.util.algorithm.support; d9jD?HgM(  
7042?\\=  
import org.rut.util.algorithm.SortUtil; {(Mmv[y  
&dni6E4  
/** 1BEc"  
* @author treeroot rp1+K4]P  
* @since 2006-2-2 ]8$H'u(C  
* @version 1.0 CZ$B2i6  
*/ ~5Mj:{B  
public class ImprovedMergeSort implements SortUtil.Sort { k*,+ag*j  
*D[yA  
private static final int THRESHOLD = 10; Q]K$yo  
P&: [pPG  
/* eFA,xzp  
* (non-Javadoc) %WmTG }L)  
* { JDD"z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mZ:#d;0  
*/ !SnLvW89Z  
public void sort(int[] data) { uD{ xs  
int[] temp=new int[data.length]; '+g[n  
mergeSort(data,temp,0,data.length-1); &?xmu204  
} i tk/1  
w"QZ7EyJ  
private void mergeSort(int[] data, int[] temp, int l, int r) { "VoufXM:  
int i, j, k; mtE+}b@(!&  
int mid = (l + r) / 2; {%y|A{}c  
if (l == r) ! jDopE0L  
return; MI:%Eq  
if ((mid - l) >= THRESHOLD) )4:]gx#cr  
mergeSort(data, temp, l, mid); sD{Wc%5  
else LH`2Y,E  
insertSort(data, l, mid - l + 1); gnxD'1_  
if ((r - mid) > THRESHOLD) XsFzSm  
mergeSort(data, temp, mid + 1, r); E GZiWBr  
else A+4Kj~`!  
insertSort(data, mid + 1, r - mid); 7 &%#bMnw  
3kF+wifsz  
for (i = l; i <= mid; i++) { L?&&4%%  
temp = data; {&B0kjf  
} !g=b=YK  
for (j = 1; j <= r - mid; j++) { m9&%A0  
temp[r - j + 1] = data[j + mid]; Lz:FR*  
} ORWi+H|  
int a = temp[l]; g:G5'pZf  
int b = temp[r];  +`ov1h  
for (i = l, j = r, k = l; k <= r; k++) { u5KAwMw%Q  
if (a < b) { ,7k1n{C)  
data[k] = temp[i++]; 87!m l  
a = temp; e5 zi"~  
} else { H/;AlN|!  
data[k] = temp[j--]; EdSUBoWF}  
b = temp[j]; fZ;}_wR-H  
} |Sua4~yL(  
} -:J<JX)o  
} \n^[!e"`  
|R!ozlL{}  
/** 2Yd@ V}  
* @param data Vx> Q  
* @param l aD_7^8>  
* @param i ucU7 @j  
*/ PCV#O63[  
private void insertSort(int[] data, int start, int len) { ozl!vf# kv  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 19!;0fe=  
} {Ja(+NQ  
} unbIfl=  
} X')l04P@%  
} 0G33hIOS  
u7Ix7`V  
堆排序: ;f N^MW@&[  
qK9A /Mc  
package org.rut.util.algorithm.support; Fpeokr"i  
DQ c\[Gq&  
import org.rut.util.algorithm.SortUtil; ZU+_nWnl  
t+]1D@hv  
/** >gM"*Laa?  
* @author treeroot _G'A]O/BZD  
* @since 2006-2-2 >kmgYWG  
* @version 1.0 Oe :S1f  
*/ r3-<~k-  
public class HeapSort implements SortUtil.Sort{ `NEi/jB  
lQvgq  
/* (non-Javadoc) 4gNN "  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vNl)ltzJF  
*/ cs9h\]ZA  
public void sort(int[] data) { =NI?Jk*iAq  
MaxHeap h=new MaxHeap(); "+wkruC  
h.init(data); V3r)u\ o'  
for(int i=0;i h.remove(); u U>L (  
System.arraycopy(h.queue,1,data,0,data.length); wAX;)PLg  
} :l1-s]  
mU?~s7  
private static class MaxHeap{ 4>vO9q  
cL;%2TMk  
void init(int[] data){ 1EC;t1.7  
this.queue=new int[data.length+1]; ]j6K3  
for(int i=0;i queue[++size]=data; }HmkTk  
fixUp(size); ]vn*eqd  
} W83PMiN"T-  
} '-[hy>t  
d ePk}Sn  
private int size=0; vq+CW?*"  
oSkQ/5hg.  
private int[] queue; T6=|)UTe1  
g}gGm[1SUo  
public int get() { Q@>1z*'I  
return queue[1]; 6-TYOUm  
} ~_N,zw{x  
!k*B-@F  
public void remove() { F --b,,  
SortUtil.swap(queue,1,size--); n8_X<jIp3  
fixDown(1); >3KlI  
} 3\ Mt+!1{  
file://fixdown {#,5C H')  
private void fixDown(int k) { &B[*L+-E  
int j; hif;atO  
while ((j = k << 1) <= size) { fKqr$59>  
if (j < size %26amp;%26amp; queue[j] j++; }5(_gYr  
if (queue[k]>queue[j]) file://不用交换 q0Q[]|L  
break; !&g_hmnIF  
SortUtil.swap(queue,j,k); sCzpNJ"8  
k = j; I]+ zG  
} _|0#  
} rg k1.0U0  
private void fixUp(int k) { e@0|fB%2  
while (k > 1) { ) xa )$u  
int j = k >> 1; ol/@)k^s>  
if (queue[j]>queue[k]) ~/-SKGzo-  
break;  ] ?D$n  
SortUtil.swap(queue,j,k); ~K3Lbd| r  
k = j; [7gz?9VyLF  
} 0|tyKP|J  
} YtSYe%  
h'=)dFw7  
} % R25,  V  
5 0-7L,  
} N~ CQh=<  
VV/T)qEe7>  
SortUtil: #iv4L  
#I0FWZ>W  
package org.rut.util.algorithm; XIbxi  
6O6B8  
import org.rut.util.algorithm.support.BubbleSort; ro<w8V9.a  
import org.rut.util.algorithm.support.HeapSort; ^" g?m  
import org.rut.util.algorithm.support.ImprovedMergeSort; (UjaL@G  
import org.rut.util.algorithm.support.ImprovedQuickSort; U= f9b]Y  
import org.rut.util.algorithm.support.InsertSort; 1 Vt,5o5  
import org.rut.util.algorithm.support.MergeSort; v@[3R7|4  
import org.rut.util.algorithm.support.QuickSort; pqpsa'  
import org.rut.util.algorithm.support.SelectionSort;  XA;PWl5!  
import org.rut.util.algorithm.support.ShellSort; s-Yu(X2  
RS}_cm0  
/** !9$}1_,is  
* @author treeroot JJWP te/  
* @since 2006-2-2  wk8fa  
* @version 1.0 y|MhV/P04  
*/ M *3G  
public class SortUtil { l6w\E=K  
public final static int INSERT = 1; OQ_< Vxz  
public final static int BUBBLE = 2; F#<:ZByjJ@  
public final static int SELECTION = 3; i_AD3Jrs  
public final static int SHELL = 4; Khi6z&B  
public final static int QUICK = 5; 5p!{#r6m  
public final static int IMPROVED_QUICK = 6; sgK =eBE  
public final static int MERGE = 7; WeH_1$n5  
public final static int IMPROVED_MERGE = 8; }DjVZ48  
public final static int HEAP = 9; Vfy@?x= &  
%_Lz0L64k  
public static void sort(int[] data) { 1/:vFX  
sort(data, IMPROVED_QUICK); {{P 3Z[  
} zFO0l).  
private static String[] name={ e> 9X  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ]$ s)6)kW  
}; O ] !tK  
$=E4pb4Y  
private static Sort[] impl=new Sort[]{ 2oahQ: }B  
new InsertSort(), 5TuwXz1v  
new BubbleSort(), (&Q!5{$W  
new SelectionSort(), K*Ba;"Ugeg  
new ShellSort(), oP56f"BE(  
new QuickSort(), |/l] ]+  
new ImprovedQuickSort(), CXoiA"P  
new MergeSort(),  }E(w@&  
new ImprovedMergeSort(), LNk :PD0m  
new HeapSort() Hc\@{17   
}; 8 NNh8k#6  
Y9#dAI[Gce  
public static String toString(int algorithm){ Wkk(6gS,  
return name[algorithm-1]; xV14Y9  
} I(BJ1 8F$  
Fng  
public static void sort(int[] data, int algorithm) { -b?M5P*:  
impl[algorithm-1].sort(data); @YaI5>,/  
} >ZPu$=[W  
LHZsmUM(dg  
public static interface Sort { s1Wn.OGR4  
public void sort(int[] data); KV;q}EyG  
} ,Q Ge=Exn  
h2mHbe43  
public static void swap(int[] data, int i, int j) { 1qn/*9W}=  
int temp = data; *!`&+w  
data = data[j]; 8o,0='U  
data[j] = temp; 0k\,z(e  
} E,?IIRg&  
} =>'j_|  
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