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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。 ZM#=`k9  
插入排序: J:dof:q  
2/P"7A=<  
package org.rut.util.algorithm.support; Et2JxbD  
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import org.rut.util.algorithm.SortUtil; +%>:0mT  
/** n^(A=G  
* @author treeroot km5~Gc}  
* @since 2006-2-2 qNgd33u1  
* @version 1.0 is; XmF*5=  
*/ O>y'Nqz  
public class InsertSort implements SortUtil.Sort{ MhEw _{?  
!eR3@%4  
/* (non-Javadoc) r{Rg920  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yTM3^R(  
*/ V3N0Og3  
public void sort(int[] data) { cR{>IH4^  
int temp; 4'pS*v  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); :PY tR  
} .lG5=Th!  
} PaB!,<A  
} *4Fr&^M\  
-4#2/GXNO  
} j=+"Qz/hr_  
^H'a4G3  
冒泡排序: EpPf _ \o  
^4Am %yyT  
package org.rut.util.algorithm.support; `b5 @}',  
>RI>J.~  
import org.rut.util.algorithm.SortUtil; GyI-)Bl DC  
~ AQp|  
/** {i~8 :  
* @author treeroot )vB2!H/  
* @since 2006-2-2 y %8op:'  
* @version 1.0 H5>hx {  
*/ / jTT5  
public class BubbleSort implements SortUtil.Sort{ k,Qsk d-N]  
:c[n\)U[aa  
/* (non-Javadoc) uwIc963  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uYG^Pc^v  
*/ WP **a Bp  
public void sort(int[] data) { Px@/Q  
int temp; S&jesG-F  
for(int i=0;i for(int j=data.length-1;j>i;j--){ S]3Ev#>  
if(data[j] SortUtil.swap(data,j,j-1); R\Z: n*  
} ov# 7 hxe  
} qk(P>q8[  
} g+8hp@a  
} 1n*W2:,z  
~`#-d ^s:  
} (WlIwKP  
.S\&L-{  
选择排序: xFv;1Q  
JOn yrks  
package org.rut.util.algorithm.support; \a^,sV  
th5g\h%j*  
import org.rut.util.algorithm.SortUtil; Wo$%9!W  
8euZTfK9e  
/** cTZ.}eLh  
* @author treeroot E N^Uki`  
* @since 2006-2-2 @R~5-m  
* @version 1.0 %~ |HFYd  
*/ _A_ A$N~9  
public class SelectionSort implements SortUtil.Sort { p\v Mc\  
gieJ}Bv  
/* ]1-z! B4K  
* (non-Javadoc) =TvzS%U  
* ITuq/qts]A  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cF T 9Lnz  
*/ {4 >mc'dv  
public void sort(int[] data) { bEuaOBc  
int temp; R! s6% :Yg  
for (int i = 0; i < data.length; i++) { oSb, :^Wl  
int lowIndex = i; N@o?b  
for (int j = data.length - 1; j > i; j--) { XkKC!  
if (data[j] < data[lowIndex]) { $.St ej1  
lowIndex = j; wt }9B[  
} o6kNx>tc)  
} _+f+`]iM  
SortUtil.swap(data,i,lowIndex); 6"j_iB  
} {.e=qQ%P5)  
} :q##fG 'm/  
iP~,n8W  
} *y[PNqyd  
wYsZM/lw  
Shell排序: jMBiaX`F  
l?E a#  
package org.rut.util.algorithm.support; SJ' % ^  
7[v%GoE  
import org.rut.util.algorithm.SortUtil; +m\|e{G  
}peBR80tQ  
/** [Bb utGvj  
* @author treeroot  Fnx`Ri  
* @since 2006-2-2 J<j&;:IRd  
* @version 1.0 dpZ;l 9  
*/ 9$K;Raz%  
public class ShellSort implements SortUtil.Sort{ ?0*8R K  
9|' B9C  
/* (non-Javadoc) }71LLzG`/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /Poet%XvRx  
*/ (3vHY`9  
public void sort(int[] data) { &7?R+ZGo  
for(int i=data.length/2;i>2;i/=2){ DsDzkwJE  
for(int j=0;j insertSort(data,j,i); y k161\  
} )(Iy<Y?#  
} Tm]nEl)_  
insertSort(data,0,1); ,0$)yZ3*3,  
} R/b4NGW@  
J a,d3K  
/** r~[vaQQ6L  
* @param data m,LG=s  
* @param j ig"uXs  
* @param i d=.2@Ry  
*/ 3Q}$fQ&S  
private void insertSort(int[] data, int start, int inc) { !,$i6gm  
int temp; 1nj(h g  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); qf'm=efRyu  
} uw\1b.r'B  
} #PLEPB  
} Sywu=b  
j{VGClb=T  
} {xcZ*m!B  
7;`o( [N  
快速排序: hi =XYC,  
;_kzcK!l  
package org.rut.util.algorithm.support; &UHPX?x  
_=6 rE  
import org.rut.util.algorithm.SortUtil; z|R,&~:  
w [>;a.$  
/** _S0+;9fhY  
* @author treeroot ajhEL?%D  
* @since 2006-2-2 z:Sigo_z[  
* @version 1.0 H2gj=krK  
*/ QA!_} N4n  
public class QuickSort implements SortUtil.Sort{ s,VXc/  
P'@<:S|  
/* (non-Javadoc)  84zTCX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %bXx!x8(  
*/ ]6Ug>>x5  
public void sort(int[] data) { zkM"cb13q/  
quickSort(data,0,data.length-1); .uo.N   
} C=Fzu&N}  
private void quickSort(int[] data,int i,int j){ |C \}P  
int pivotIndex=(i+j)/2; *TW=/+j  
file://swap KP;(Q+qTx  
SortUtil.swap(data,pivotIndex,j); Huw\&E  
}'"Gr%jf(  
int k=partition(data,i-1,j,data[j]); 0x2!<z  
SortUtil.swap(data,k,j); A?5E2T1L%.  
if((k-i)>1) quickSort(data,i,k-1); 4S0>-?{  
if((j-k)>1) quickSort(data,k+1,j); F7m?xy  
ge3sU5iZ  
} >r/rc`Q  
/** f}c\_}(  
* @param data txql 2  
* @param i HY;o ^drd  
* @param j cNpe_LvW  
* @return 4o:hyh   
*/ R$kpiqK  
private int partition(int[] data, int l, int r,int pivot) { _&3<6$}i"  
do{ dGfVZDsr]  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); gxPx&Z6jF  
SortUtil.swap(data,l,r); O^>jdl!TZ  
} _:n b&B  
while(l SortUtil.swap(data,l,r); Gm`}(;(A  
return l; TOF '2&H  
} vh!v MB}}  
NIr@R7MKd  
} k`HP "H  
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改进后的快速排序: OIHz I2{  
?{"mP 'dD  
package org.rut.util.algorithm.support; :yT-9Ze%q  
$5`!Z%>/  
import org.rut.util.algorithm.SortUtil; D-imL;|  
m%+IPZ2m  
/** %m5Q"4O  
* @author treeroot {MAQ/5  
* @since 2006-2-2 ;32#t[i b  
* @version 1.0 Ax3W2s  
*/ )Ag/Qep  
public class ImprovedQuickSort implements SortUtil.Sort { !;@_VWR  
9ILIEm:  
private static int MAX_STACK_SIZE=4096; tHD  
private static int THRESHOLD=10; `;,Pb&W~  
/* (non-Javadoc) p_*M:P1Ma4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~d{.ng 4K  
*/ f"#m=_Xm  
public void sort(int[] data) { ? ]sM8Bd}  
int[] stack=new int[MAX_STACK_SIZE]; 7fp(R&)1  
HJ?+A-n/  
int top=-1; WzW-pV]  
int pivot; D*5hrkV9  
int pivotIndex,l,r; sGDV]~E  
PeX1wK%f  
stack[++top]=0; !2CL1j0(  
stack[++top]=data.length-1; Mkp/0|Q*  
k?BJdg)xJ  
while(top>0){ qVjWV$j  
int j=stack[top--]; 5lKJll^2:  
int i=stack[top--]; %ugHhS!  
1 "TVRb  
pivotIndex=(i+j)/2; =6FUNvP#8  
pivot=data[pivotIndex]; z><5R|Gf  
o{v&.z  
SortUtil.swap(data,pivotIndex,j); +1C3`0(  
Ph&urxH@  
file://partition P27%xV-n>  
l=i-1; T[k4lM  
r=j; C;AA/4Ib  
do{ _s,ao '/  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); :_<_[Y]1  
SortUtil.swap(data,l,r); ukgAI<O%  
} zHWSE7!  
while(l SortUtil.swap(data,l,r); ?B@;QjhjiJ  
SortUtil.swap(data,l,j); mN `YuR~  
i[C~5}%  
if((l-i)>THRESHOLD){ 'PZ|:9FX!  
stack[++top]=i;  9DQ)cy  
stack[++top]=l-1; TjWE_Bq]g  
} DVZdClAL  
if((j-l)>THRESHOLD){ >!e<}84b  
stack[++top]=l+1; c97{Pu  
stack[++top]=j; uaw~r2  
} ?[TfpAtQ`  
dCYCHHHF  
} Zt -1h{7  
file://new InsertSort().sort(data); + Y.1)i}  
insertSort(data); _R|Ify#J  
} B@Co'DV[/]  
/** \e=_ 2^v!_  
* @param data I-D^>\k+  
*/ :6J +%(f  
private void insertSort(int[] data) { i>L+gLW  
int temp; Uk*IpP`  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); pY)5bSA  
} M`,~ mU  
} kB:Uu }(=N  
} S 6,4PP  
HysS_/t~  
} Z#d&|5Xj  
?rVy2!  
归并排序: F~#zxwd  
6dH }]~a  
package org.rut.util.algorithm.support; tbo>%kn  
Xy,lA4IP  
import org.rut.util.algorithm.SortUtil; a/Q$cOs  
qL$a c}`  
/** ?,P3)&3g  
* @author treeroot <Tw>|cFT  
* @since 2006-2-2 })xp%<`  
* @version 1.0 IH48|sa  
*/ ~\p]~qQ\K  
public class MergeSort implements SortUtil.Sort{ ]  H~4  
b2(RpY2Y  
/* (non-Javadoc) a ?} .Fs  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zIC;7 5#  
*/ E9\vA*a  
public void sort(int[] data) { ' #NcZy  
int[] temp=new int[data.length]; k- V,~c  
mergeSort(data,temp,0,data.length-1); +=Jir1SLV  
} $w)~O<_U  
TlL^7f}  
private void mergeSort(int[] data,int[] temp,int l,int r){ 'AGto'Yy;  
int mid=(l+r)/2; bUV >^d  
if(l==r) return ; ,)+ o  
mergeSort(data,temp,l,mid); _8fr6tO+  
mergeSort(data,temp,mid+1,r); )C(>H93  
for(int i=l;i<=r;i++){ N qHy%'R  
temp=data; {_N,=DQ!  
} vE6mOM!_L  
int i1=l; ~0$NJrUy  
int i2=mid+1; -\ZcOXpMx=  
for(int cur=l;cur<=r;cur++){ C`=p +2I]  
if(i1==mid+1) r;9 r!$d  
data[cur]=temp[i2++]; y4Z &@,_{  
else if(i2>r) $CTSnlPq  
data[cur]=temp[i1++]; mC&=X6Q]  
else if(temp[i1] data[cur]=temp[i1++]; e+v({^k  
else yNW\?Z$@q  
data[cur]=temp[i2++]; uY_SU-v  
} m p<1yY]  
} 84HUBud76Y  
c0c|z Ym  
} ^m#-9-`  
R_] {2~J+  
改进后的归并排序: iUMY!eqp  
g 6]epp[8  
package org.rut.util.algorithm.support; eAUcv`[#p  
/-zXM;h  
import org.rut.util.algorithm.SortUtil; hc (e$##  
0.$hn  
/** rWys'uc  
* @author treeroot &uP~rEJl+  
* @since 2006-2-2 CO-_ea U(  
* @version 1.0 U~{du;\  
*/ rqv))Zo`  
public class ImprovedMergeSort implements SortUtil.Sort { {l_{T4xToB  
@uo ~nFj,  
private static final int THRESHOLD = 10; Yw5'6NU  
-yxOBq  
/* i| \6JpNA:  
* (non-Javadoc) o:Qv JcB  
* mOo`ZcTU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pY4}>ju(g  
*/ NC&DFJo  
public void sort(int[] data) { A,i75kd  
int[] temp=new int[data.length]; &<zd.~N"  
mergeSort(data,temp,0,data.length-1); gh`m*@  
} `&0Wv0D0  
G;> _<22  
private void mergeSort(int[] data, int[] temp, int l, int r) { b[z]CP  
int i, j, k; jVLA CWH  
int mid = (l + r) / 2; }:: S 0l  
if (l == r) MT(o"ltQ  
return; PcB_oG g  
if ((mid - l) >= THRESHOLD) f >BWG`  
mergeSort(data, temp, l, mid); F4=}}k U  
else 8x`.26p  
insertSort(data, l, mid - l + 1); xI ,2LGO  
if ((r - mid) > THRESHOLD) Sxjub&=  
mergeSort(data, temp, mid + 1, r); l4T7'U>`  
else FZreP.2)!  
insertSort(data, mid + 1, r - mid); vVGDDDz/  
OY[e.N t&  
for (i = l; i <= mid; i++) { Cs2;z:O]  
temp = data; ?!qY,9lhH  
} wf, 7==  
for (j = 1; j <= r - mid; j++) { fEB7j-t  
temp[r - j + 1] = data[j + mid]; (E,T#uc{  
} b~dIk5>O  
int a = temp[l]; 2Q;9G6p  
int b = temp[r]; 2VW}9O  
for (i = l, j = r, k = l; k <= r; k++) { &d7Z6P'`G  
if (a < b) { A^Kbsc  
data[k] = temp[i++]; +cb6??H  
a = temp; .q+0pj  
} else { .ROznCe}  
data[k] = temp[j--]; v}WR+)uFQ  
b = temp[j]; :Hxv6  
} .^J2.>.  
} Nn>'^KZNG  
} =PGs{?+&O  
c1X1+b,  
/** $mF_,|  
* @param data t 6v/sZ{F  
* @param l ]v+31vdf:O  
* @param i XMG]Wf^%\<  
*/ \uss Uv  
private void insertSort(int[] data, int start, int len) { )M2F4[vcb  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Z{?G.L*/  
} Y8flrM2CwG  
} J>d.dq>r  
} 5zON}"EC  
} 8p[)MiC5W^  
Vh>Z,()>>@  
堆排序: p~LrPWHSTP  
n~VD uKn9  
package org.rut.util.algorithm.support; <nEi<iAY>U  
G "P4-  
import org.rut.util.algorithm.SortUtil; f6$b s+oP  
OtFh,}E  
/** zbJT&@z  
* @author treeroot iR"N13  
* @since 2006-2-2 !!Z?[rj  
* @version 1.0 dz Zb  
*/ QeF3qXI  
public class HeapSort implements SortUtil.Sort{ !?Wp+e6  
"Ks,kSEzu  
/* (non-Javadoc) +S Jd@y@fR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NHlk|Y#6b  
*/ )>BHL3@  
public void sort(int[] data) { $.]l!cmi%Q  
MaxHeap h=new MaxHeap(); 86nN"!{l:  
h.init(data); arf8xqR-U]  
for(int i=0;i h.remove(); +^;JS3p@\  
System.arraycopy(h.queue,1,data,0,data.length); <$JaWL  
} _V`DWR *  
JU&+c6>  
private static class MaxHeap{ vm>b m  
(h:Rh  
void init(int[] data){ nB .G  
this.queue=new int[data.length+1]; k5]j.V2f  
for(int i=0;i queue[++size]=data; qW b+r  
fixUp(size); .bio7c6  
} 1^gl}^|B  
} Z1"v}g  
X.:]=,aGW  
private int size=0; $MJm*6h  
X1~1&:V,<  
private int[] queue; DK}"b}Fvq  
gCyW Vp  
public int get() { {T].]7Z  
return queue[1]; D= 7c(  
} >t7x>_~   
$ tl\UH7%2  
public void remove() { F:aILx  
SortUtil.swap(queue,1,size--); i~r l o^  
fixDown(1); z;y:9l  
} 3po:xMY  
file://fixdown IsR!'%Pu  
private void fixDown(int k) { !W?gR.0$=  
int j; Kv~U6_=1O  
while ((j = k << 1) <= size) { _o8 ?E&d  
if (j < size %26amp;%26amp; queue[j] j++; o=1X^,  
if (queue[k]>queue[j]) file://不用交换 J`2"KzR0w"  
break; )m. 4i=X  
SortUtil.swap(queue,j,k); {5  sO  
k = j; m4*@o?Ow  
} G z)NwD  
} Po%(~ )S>  
private void fixUp(int k) { \QB;Ja _  
while (k > 1) { a0Zv p>Ft  
int j = k >> 1; [ +P#tIL  
if (queue[j]>queue[k]) jVq(?Gc  
break; l} qE 46EL  
SortUtil.swap(queue,j,k); ^b %0 B  
k = j; /7 Cn(s5o  
} H*r>Y  
} <m'ow  
Q`D_|L  
} ~zw]5|  
8,uB8C9  
} TjG4`:*y#m  
aFLO{tr`  
SortUtil: HJY2#lSha6  
CJhL)0Cs  
package org.rut.util.algorithm; 3)RsLI9  
vY_-Ranj#.  
import org.rut.util.algorithm.support.BubbleSort; ZWS`\M  
import org.rut.util.algorithm.support.HeapSort; %'T #pz  
import org.rut.util.algorithm.support.ImprovedMergeSort; =)7s$ p  
import org.rut.util.algorithm.support.ImprovedQuickSort; )(@Hd  
import org.rut.util.algorithm.support.InsertSort; twx[ s$O'b  
import org.rut.util.algorithm.support.MergeSort; zLJ/5&  
import org.rut.util.algorithm.support.QuickSort; 1m.W<  
import org.rut.util.algorithm.support.SelectionSort; 3g6j?yYqb  
import org.rut.util.algorithm.support.ShellSort; ()H:UvM=t  
Km^&<3ch#  
/** ,\@O(; mF  
* @author treeroot J4\qEO  
* @since 2006-2-2 h5K$mA5  
* @version 1.0 CoA6  
*/ Y5j]Z^^v  
public class SortUtil { xL" |)A =  
public final static int INSERT = 1; I&YSQK:b  
public final static int BUBBLE = 2; :GJ &_YHf  
public final static int SELECTION = 3; & j+oJasI  
public final static int SHELL = 4; M8TSt\  
public final static int QUICK = 5; -ne Kuj  
public final static int IMPROVED_QUICK = 6; uAWM \?  
public final static int MERGE = 7; Zcc9e 03  
public final static int IMPROVED_MERGE = 8; `Ry]y"K  
public final static int HEAP = 9; LupkrxV  
:Q@&5!]>d  
public static void sort(int[] data) { +k>.Q0n%m  
sort(data, IMPROVED_QUICK); b4pm_Um  
} =ha{Ziryo  
private static String[] name={ & :7ZQ1  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" k%G1i-] 4  
}; Ft!],n-n*  
Tq~=TSD  
private static Sort[] impl=new Sort[]{ 71{p+3Z&  
new InsertSort(), k|!EDze43?  
new BubbleSort(), O &-wxJ]S  
new SelectionSort(), ]H1I,`=@  
new ShellSort(), =3v]gOcO  
new QuickSort(), _x5 3g A  
new ImprovedQuickSort(), tq|hPd<C  
new MergeSort(), @qHNE,K  
new ImprovedMergeSort(), $ O5UyKI  
new HeapSort() X<*U.=r)  
}; k Zq!&  
.?hP7;hhI  
public static String toString(int algorithm){ %p 0xM  
return name[algorithm-1]; f-7 1~  
} FJ6u.u  
w/K_B:s  
public static void sort(int[] data, int algorithm) { =i7`ek  
impl[algorithm-1].sort(data); v@d  
} -Zz$~$  
*v3]}g[<  
public static interface Sort { MHC^8VL  
public void sort(int[] data); O7$hYk  
} $ <#KA3o\  
x a06i#  
public static void swap(int[] data, int i, int j) { QhK#Y{xY  
int temp = data; E}tqQ*u  
data = data[j]; PxS8 n?y  
data[j] = temp; 1[vi.  
} [ E ]E  
} #gcF"L||  
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