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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。 ;tQc{8O6L  
插入排序: #j7&2L  
r?)1)?JnHe  
package org.rut.util.algorithm.support; 6!i`\>I]  
#;99vwc  
import org.rut.util.algorithm.SortUtil; gy?uk~p  
/** F7' MoH  
* @author treeroot $j,$O>V  
* @since 2006-2-2 = V')}f~C  
* @version 1.0 '-myOM7  
*/ 6}Y==GP t  
public class InsertSort implements SortUtil.Sort{ [!U%''  
H%vgPQ8  
/* (non-Javadoc) 6,4vs+(|\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Wpf~Ji6||  
*/ I3 6@x`f  
public void sort(int[] data) { ,|O6<u9  
int temp; ,i6U*  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Qc Wg  
} @@ @}FV&  
} !{,2uQXe  
} NcbW"Qv3  
Z>UM gu3c  
} V9/2y9u  
,#N}Ni:  
冒泡排序: ~NE`Ad.G  
e 6wevK\  
package org.rut.util.algorithm.support; @ddCVxd  
LawE 3CD  
import org.rut.util.algorithm.SortUtil; K!AA4!eUzM  
?o)?N8U  
/** uj)vh  
* @author treeroot Iep_,o.Sk  
* @since 2006-2-2 u~,hT Y(%  
* @version 1.0 0B[~j7EGO  
*/ G5|nt#>  
public class BubbleSort implements SortUtil.Sort{ v~x`a0  
F,as>X#  
/* (non-Javadoc) cGs& Kn;h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pzt<[;  
*/ _x|R`1`  
public void sort(int[] data) { :CqR1_n%  
int temp; E<D^j^T  
for(int i=0;i for(int j=data.length-1;j>i;j--){ w15a~\Qu  
if(data[j] SortUtil.swap(data,j,j-1); J:)ml  
} i<$?rB!i<1  
} 3w>1R>7  
} C/ VHzV%q  
} +9]t]Vrw  
s/t,6-~EH  
} zk1]?  
 R`o Xkj  
选择排序: kbvF 9#  
[g`4$_9S  
package org.rut.util.algorithm.support; %<+Ku11  
_9"ZMUZ{  
import org.rut.util.algorithm.SortUtil; L{1[:a)']B  
` >>]$ZJ  
/** PDH|=meXM  
* @author treeroot Vxo?%Dj  
* @since 2006-2-2 daCkjDGl\  
* @version 1.0 Rt,po  
*/ 3-AOB3](  
public class SelectionSort implements SortUtil.Sort { w('}QB`xad  
Za?BpV~  
/* >B``+ Z^2  
* (non-Javadoc) `*0VN(gf'  
* ' Hj([N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fg ,vTpBk  
*/ 1fV)tvU$  
public void sort(int[] data) { N,8.W"fV  
int temp; Zcw <USF8  
for (int i = 0; i < data.length; i++) { fHwS12SB  
int lowIndex = i; "PS ) "t  
for (int j = data.length - 1; j > i; j--) { 5{!"}  
if (data[j] < data[lowIndex]) { 9W-" mD;  
lowIndex = j; i"+TKo-  
} ?N9Z;_&^.  
} B^]Gv7-  
SortUtil.swap(data,i,lowIndex); ^} Y}Iz  
} %S`Wu|y  
} [j TU nP  
?.-+U~  
} }!r pH{y  
 `wIWK7i  
Shell排序: C2b<is=H:  
;P}007;  
package org.rut.util.algorithm.support; X%og}Cfi  
JoG(Nk]  
import org.rut.util.algorithm.SortUtil; E:B<_  
vV=rBO0a?  
/** [5!{>L`  
* @author treeroot GBBp1i  
* @since 2006-2-2 ru/{s3  
* @version 1.0 #N|JC d_  
*/ ,y-!h@(  
public class ShellSort implements SortUtil.Sort{ T tWzjt  
o:*$G~. k  
/* (non-Javadoc) *q\>DE=7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f8UJ3vB  
*/ 6~>h;wC  
public void sort(int[] data) { 2B)1 tP  
for(int i=data.length/2;i>2;i/=2){ .F%jbnKd_  
for(int j=0;j insertSort(data,j,i); Hj1?c,mo4  
} A|4 3W =  
} eNH9`Aa  
insertSort(data,0,1); I!(BwYd  
} ttB>PTg#  
*2.h*y'u  
/** uK#2vgT  
* @param data u] G  
* @param j 4$mtc*tzT  
* @param i LOG>x!  
*/ ?I+$KjE+  
private void insertSort(int[] data, int start, int inc) { B>I :KGkV  
int temp; _d^d1Q}V  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); +BhJske  
} $tc1 te  
} |#BN!kc  
} xDPR^xY  
?|Z~mE  
} UxF9Ko( ]d  
sV0NDM0  
快速排序: $*:$-  
w/PE)xA  
package org.rut.util.algorithm.support; Lr d-  
II=!E  
import org.rut.util.algorithm.SortUtil; VV 54$a  
9pr.`w  
/** f)Y~F/[$P  
* @author treeroot :AQ9-&i/a-  
* @since 2006-2-2 0`v-pL0|  
* @version 1.0 #Jp|Cb<qx  
*/ =w:)AWZ  
public class QuickSort implements SortUtil.Sort{ o9C# 5%9  
OTAe#]#  
/* (non-Javadoc) O:~J_Wwl!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q`;eI a6U  
*/ OZz!8-|wE  
public void sort(int[] data) { r=7!S8'  
quickSort(data,0,data.length-1); `}L{gssv  
} [#G*GAa6*  
private void quickSort(int[] data,int i,int j){ ^wwS`vPb  
int pivotIndex=(i+j)/2; d0Ubt  
file://swap M} ri>o  
SortUtil.swap(data,pivotIndex,j); O'@[ f{  
mC-wPi8  
int k=partition(data,i-1,j,data[j]); Ejf5M\o  
SortUtil.swap(data,k,j); LylCr{s7  
if((k-i)>1) quickSort(data,i,k-1); `|v/qk7 ^?  
if((j-k)>1) quickSort(data,k+1,j); z;/8R7L&  
_I3v"d  
} (u='&ka  
/** Lm<WT*@  
* @param data x&+&)d  
* @param i zMO#CZ t  
* @param j ;|$oz{Ll  
* @return 'n\PS,[1R  
*/ Hr7pcz/#l  
private int partition(int[] data, int l, int r,int pivot) { L(k`1E  
do{ =:6B`,~C  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 4pelIoj  
SortUtil.swap(data,l,r); ^K4?uABc  
} >vYb'%02  
while(l SortUtil.swap(data,l,r); 9:=:P>  
return l; 3^$=XrD  
} tJ8:S@E3,  
$b7@S`5  
} B&1E&Cv_8  
f87XE";:A  
改进后的快速排序: s%>8y\MaK  
bR:hu}YS  
package org.rut.util.algorithm.support; O 9M?Wk :  
t. (6tL]  
import org.rut.util.algorithm.SortUtil; =8rNOi  
yOAC<<Tzus  
/** KDV.ZSF7  
* @author treeroot )iK:BL*Nw  
* @since 2006-2-2 .yD 6$!6  
* @version 1.0 hd(TKFL^y  
*/ !h<O c!9  
public class ImprovedQuickSort implements SortUtil.Sort { }s6Veosl  
|YV> #l  
private static int MAX_STACK_SIZE=4096; e"{"g[b/7  
private static int THRESHOLD=10; {^:NII]  
/* (non-Javadoc) EQw7(r|v:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Di}M\!-[  
*/ F?cwIE\J  
public void sort(int[] data) { =*zde0T?l  
int[] stack=new int[MAX_STACK_SIZE]; Q7d@+C  
y7rT[f/J  
int top=-1; s aHY9{)  
int pivot; BgDWl{pm  
int pivotIndex,l,r; x%[NK[^&  
hsYE&Np_Q  
stack[++top]=0; .=d40m  
stack[++top]=data.length-1; Je2&7uR0  
!#*#jixo  
while(top>0){ BpX`49  
int j=stack[top--]; fBz|-I:k +  
int i=stack[top--]; @0C[o9  
QP%Hwt]+  
pivotIndex=(i+j)/2; dD~H ft  
pivot=data[pivotIndex]; JL{fW>5y|  
WiQVZ {  
SortUtil.swap(data,pivotIndex,j); \i}-Y[Dg  
Aho*E9VW  
file://partition \DBEs02  
l=i-1; L<B)BEE.  
r=j; ^Pu:&:ki  
do{ $d4&H/u^  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ,`k6 @4  
SortUtil.swap(data,l,r); /(u? k%Q  
} VZ">vIRyi|  
while(l SortUtil.swap(data,l,r); ]l+<-  
SortUtil.swap(data,l,j); n\<7`,  
@$;8k }  
if((l-i)>THRESHOLD){ =VT\$ 5A  
stack[++top]=i; ;_|4c7  
stack[++top]=l-1; 6U$e;cr6  
} U}k@%m,  
if((j-l)>THRESHOLD){ 7sWe32  
stack[++top]=l+1; _iEnS4$A8  
stack[++top]=j; "O|.e`C%^  
} }; M@JMu,  
rwio>4=  
} $/@  L  
file://new InsertSort().sort(data); !y>up+cRjl  
insertSort(data); `g)  
} B*Om\I  
/** HVhd#Q;  
* @param data UugR  
*/ BSB&zp  
private void insertSort(int[] data) { q bCU&G|)  
int temp; G`Z<a  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); PlK3;  
} 7zA+UWr  
} mO(Y>|mm  
} so/0f1R?~  
TA:uB[Ji  
} +{m+aHk  
fE&s 6w&  
归并排序: nt-_)4Fm  
}aI>dHL  
package org.rut.util.algorithm.support; P/^@t+KC  
HY?#r]Ryt  
import org.rut.util.algorithm.SortUtil; ocMTTVo  
v0=v1G*rvJ  
/** KK4e'[Wf  
* @author treeroot (!J;g|58  
* @since 2006-2-2 7 b(  
* @version 1.0 YjJ^SU`*  
*/ Q-#<{' (  
public class MergeSort implements SortUtil.Sort{ H+]h+K9\7  
3/uvw>$  
/* (non-Javadoc) , /jHhKW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5JK'2J&  
*/ ?z6K/'?  
public void sort(int[] data) { ja/wI'J<  
int[] temp=new int[data.length]; eH!V%dX  
mergeSort(data,temp,0,data.length-1); BafNF Pc  
} }|N88PN  
"!7Hu7  
private void mergeSort(int[] data,int[] temp,int l,int r){ L+T7Ge q  
int mid=(l+r)/2; "L1LL iS  
if(l==r) return ; XP:fL NpQ  
mergeSort(data,temp,l,mid); 55UPd#E'  
mergeSort(data,temp,mid+1,r); C!9mygI  
for(int i=l;i<=r;i++){ dTu*%S1Z  
temp=data; JKO*bbj  
} n9k  
int i1=l; Nh/i'q/  
int i2=mid+1; in,0(I&I  
for(int cur=l;cur<=r;cur++){ )'e1@CR  
if(i1==mid+1) O@W/s!&lFa  
data[cur]=temp[i2++]; ZWzr8oY)  
else if(i2>r) yV(9@lj3;  
data[cur]=temp[i1++]; j8bA"r1  
else if(temp[i1] data[cur]=temp[i1++]; + ZiYl[_|  
else  "^BA5  
data[cur]=temp[i2++]; m_Z(osoE#W  
} h&v].l  
} 2_o\Wor#  
9) $[W  
} U:eX^LE7  
Q=vo5)t   
改进后的归并排序: br 3-.g  
ycki0&n3  
package org.rut.util.algorithm.support; ,`!lZ| U  
02tN=}Cj)  
import org.rut.util.algorithm.SortUtil; @qjN>PH~  
bi+g=cS  
/** "rEfhzmyF  
* @author treeroot jq8TfJ|   
* @since 2006-2-2 j)@{_tv6;  
* @version 1.0 ZqpK}I  
*/ s|c}9/Xe)  
public class ImprovedMergeSort implements SortUtil.Sort { Hg8 4\fA  
bj 8pqw|;  
private static final int THRESHOLD = 10; z7L+wNYwg  
w9RBT(u  
/* &+ PVY>q  
* (non-Javadoc) MZcvr9y  
* Y8IC4:EO  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D)l\zs%ie  
*/ vlZmmQeJm  
public void sort(int[] data) { [q_62[-X  
int[] temp=new int[data.length]; p1i}fGS  
mergeSort(data,temp,0,data.length-1);  cC|  
} KLVYWZib  
"AKr;|m  
private void mergeSort(int[] data, int[] temp, int l, int r) { \v<S:cTf  
int i, j, k; k q?:<!z  
int mid = (l + r) / 2; G/fBeK$.  
if (l == r) }lhk;#r  
return; >=:mtcph  
if ((mid - l) >= THRESHOLD) M6qNh`+HO  
mergeSort(data, temp, l, mid); F1B/cd  
else Q*1'k%7  
insertSort(data, l, mid - l + 1); @p^EXc*|  
if ((r - mid) > THRESHOLD) q _K@KB  
mergeSort(data, temp, mid + 1, r); k{b|w')  
else uysTyzx  
insertSort(data, mid + 1, r - mid); `'3 De(  
c(FGW7L<  
for (i = l; i <= mid; i++) { -r_\=<(  
temp = data; :"Tkl$@,  
} 89{;R  
for (j = 1; j <= r - mid; j++) { @|">j#0  
temp[r - j + 1] = data[j + mid]; KSEKoHJo  
} }U5$~, *p  
int a = temp[l]; QHUFS{G ]  
int b = temp[r]; 3&{6+A  
for (i = l, j = r, k = l; k <= r; k++) { 'W54 T  
if (a < b) { F`(;@LO  
data[k] = temp[i++]; "cly99t  
a = temp; {%^4%Eco  
} else { !;[cJbqnh  
data[k] = temp[j--]; |JWYsqJ0U  
b = temp[j]; n c~JAT# '  
} Oj_F1. r  
} DrAIQ7Jd  
} aj .7t =^  
)1@%!fr  
/** ,D(Bg9C  
* @param data ePv`R'#  
* @param l (V'w5&f(L  
* @param i WS.g` %  
*/ P_  8!Gp  
private void insertSort(int[] data, int start, int len) { N=T}  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); )8}k.t>'s  
} WJa7  
} F:jtzy"  
} 9xw"NcL  
} %Ny1H/@Q1+  
H_x} -  
堆排序: V:P]Ved  
; qbK[3.  
package org.rut.util.algorithm.support; A:z  
52Dgul  
import org.rut.util.algorithm.SortUtil; 5A|d hw   
#Hu# #x|  
/** u(f;4`  
* @author treeroot Y9vi&G?Jl  
* @since 2006-2-2 iCh 8e>+  
* @version 1.0 rLmc(-q  
*/ ~!7x45( 1#  
public class HeapSort implements SortUtil.Sort{ ]>k8v6*=  
ycOnPTh  
/* (non-Javadoc) #<sK3PT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !T ,=kh  
*/ @.}Y'`9L  
public void sort(int[] data) { /%p ~  
MaxHeap h=new MaxHeap(); _zzNF93Bn  
h.init(data); !?+0O]`}  
for(int i=0;i h.remove(); EowzEGq!a5  
System.arraycopy(h.queue,1,data,0,data.length); _!Tjb^  
} <Uf`'X\e6  
Cd]A1<6s  
private static class MaxHeap{ a&)!zhVP  
gE=9K @  
void init(int[] data){ wS&D-!8v  
this.queue=new int[data.length+1]; KECW~e`  
for(int i=0;i queue[++size]=data; [cznhIvyO  
fixUp(size); 83'+q((<  
} Ki Kw,@  
} whP5 u/857  
aE3eYl9u  
private int size=0; ]$^HGmP  
ME]89 T &  
private int[] queue; mQ`2c:Rn&7  
=ePX^J*M'  
public int get() { N1.1  
return queue[1]; Lz-|M?(  
} !hS)W7!ik  
OU#p^ 5K  
public void remove() { 94t`&jZ&|u  
SortUtil.swap(queue,1,size--); Ct~j/.  
fixDown(1); zOFHdd ,"g  
} ~ QohP`_  
file://fixdown g&EK^q  
private void fixDown(int k) { |4 2;171  
int j; _29wQn@]  
while ((j = k << 1) <= size) { S+wT}_BQ  
if (j < size %26amp;%26amp; queue[j] j++; ~%M*@ fm  
if (queue[k]>queue[j]) file://不用交换 shy[>\w  
break; U@n5:d=  
SortUtil.swap(queue,j,k); z\8s |!  
k = j; o:3(J}  
} >BK/HuS  
} kw gLK@@%1  
private void fixUp(int k) { `VUJW]wGu  
while (k > 1) { 2  @T~VRy  
int j = k >> 1; R2C~.d_TDu  
if (queue[j]>queue[k]) 5VQ-D`kE+  
break; H8dS]N~[Y  
SortUtil.swap(queue,j,k); :i0;jWc b  
k = j; W+U0Y,N6  
} }gt)cOaY  
} g"m9[R=]6  
&HAu;u@  
} JXq!v:w6  
~jHuJ` ]DF  
} N81M9#,["~  
I^u~r.  
SortUtil: Kr1Y3[iNv  
oz,.gP%  
package org.rut.util.algorithm; Buh}+n2]5  
!]D`|HoW  
import org.rut.util.algorithm.support.BubbleSort; UQ7]hX9  
import org.rut.util.algorithm.support.HeapSort; In1n.oRFn^  
import org.rut.util.algorithm.support.ImprovedMergeSort; -KfK~P3PF  
import org.rut.util.algorithm.support.ImprovedQuickSort; 4e AMb  
import org.rut.util.algorithm.support.InsertSort; >b=."i  
import org.rut.util.algorithm.support.MergeSort; ONDO xXs  
import org.rut.util.algorithm.support.QuickSort; G%>[7]H  
import org.rut.util.algorithm.support.SelectionSort; >G%oWRk  
import org.rut.util.algorithm.support.ShellSort; oJ3(7Sz  
wF%RM$  
/** CnZEBAU  
* @author treeroot 5$Kj#9g-#  
* @since 2006-2-2 M<NY`7$^  
* @version 1.0 6<QC|>p  
*/ t6mv  
public class SortUtil { pnz:<V"Y(  
public final static int INSERT = 1; :FH&#Eq~4  
public final static int BUBBLE = 2; chKEGosbF  
public final static int SELECTION = 3; "p|.[d  
public final static int SHELL = 4; UA2KY}pz5  
public final static int QUICK = 5; 5~jz| T}s  
public final static int IMPROVED_QUICK = 6; U] GD6q  
public final static int MERGE = 7; 4pQf*l8e  
public final static int IMPROVED_MERGE = 8; j|&D(]W/  
public final static int HEAP = 9;  zy"k b  
4KR`  
public static void sort(int[] data) { )1Y?S;  
sort(data, IMPROVED_QUICK); lz<' L. .  
} Ev7v,7`z  
private static String[] name={ (jj`}Qe3U  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" + WMXd.iN,  
}; yFb"2  
gCiM\Qx  
private static Sort[] impl=new Sort[]{ 1j op;{,^  
new InsertSort(), } S]!W\a  
new BubbleSort(), jn(!6\n"  
new SelectionSort(), $cJ fdE  
new ShellSort(), YaC[S^p  
new QuickSort(), <DR! AR)  
new ImprovedQuickSort(), _Y]Oloo('  
new MergeSort(), #Ktk["6  
new ImprovedMergeSort(), :3 Hz!iZM  
new HeapSort() BN%cX 2j  
}; %*npLDi  
|%ZJN{!R  
public static String toString(int algorithm){ :3D6OBkB  
return name[algorithm-1]; YG:^gi  
} (Sgsy^|N  
tD}-&"REP  
public static void sort(int[] data, int algorithm) { 6B7*|R>  
impl[algorithm-1].sort(data); "9QZX[J|*  
} \~+b&  
8OV =;aM?{  
public static interface Sort { G6W|l2P!  
public void sort(int[] data); PLz+%L;{  
} K\fD';  
Y%0rji  
public static void swap(int[] data, int i, int j) { !m9hL>5vR  
int temp = data; rEC  
data = data[j]; 00dY?d{[D  
data[j] = temp; ]cS(2hP7  
} a)=|{QR>W  
} (?^F }]  
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