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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。 ;ld~21#m  
插入排序: k mr 4cU5  
B{UoNm@  
package org.rut.util.algorithm.support; ~5!TV,>ls  
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import org.rut.util.algorithm.SortUtil; r\ Yur  
/** 8Pdnw/W  
* @author treeroot 27 TZ+?  
* @since 2006-2-2 LP-Q'vb<=  
* @version 1.0 {BCj VmY  
*/ HeifFJn  
public class InsertSort implements SortUtil.Sort{ Y9L6W+=T  
yW(+?7U  
/* (non-Javadoc) LLY;IUK!R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eL?si!ZL^  
*/ yIf}b  
public void sort(int[] data) { LqsJHG  
int temp; ^r :A^q  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); )9jQ_  
} / lM~K:  
} (<JDD]J  
} :Fd9N).%  
h}&IlDG  
} N_Ld,J%g  
OwIy(ukTI  
冒泡排序: N~J Eia%  
8si^HEQ8  
package org.rut.util.algorithm.support; ~[y+B0I3  
 de47O  
import org.rut.util.algorithm.SortUtil; Hf{%N'4  
^|{fB,B  
/** DMN H?6  
* @author treeroot (#iM0{  
* @since 2006-2-2 \\Tp40m+  
* @version 1.0 *`.{K12T  
*/ 5g>kr< K  
public class BubbleSort implements SortUtil.Sort{ >b?)WNk  
z ;Nk& <?  
/* (non-Javadoc) R./6Q1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {1DYXKe  
*/ jF_I4H  
public void sort(int[] data) { ",V5*1w  
int temp; &E`Z_} ~  
for(int i=0;i for(int j=data.length-1;j>i;j--){ "$pg mf2  
if(data[j] SortUtil.swap(data,j,j-1); U?j>28  
} K.1yncS^  
} slfVQ809  
} (b}7Yb]#c  
} H^:|`T|,  
T5_Cu9>ax  
} RAbq_^Q  
%<|KJb4?  
选择排序: m e{SVG{  
HWOH8q{f!  
package org.rut.util.algorithm.support; K61os&K  
N4jLbnA  
import org.rut.util.algorithm.SortUtil; 1W<_5 j_  
T@Z{KV"S  
/** #de^~  
* @author treeroot -Ep6 .v  
* @since 2006-2-2 aW$nNUVD  
* @version 1.0 }3y\cv0ct  
*/ fr2w k}/b  
public class SelectionSort implements SortUtil.Sort { RcP5].^T  
iZ\z!tHR  
/* -JK4-Hg  
* (non-Javadoc) d( g_y m*  
* 7e[\0:Z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r!,V_a4n  
*/ f.^w/ GJO/  
public void sort(int[] data) { ScoHtX3  
int temp; tgA |Vwwk  
for (int i = 0; i < data.length; i++) { Pp hQa!F$  
int lowIndex = i; gjLgeyyWC  
for (int j = data.length - 1; j > i; j--) { XO~^*[K  
if (data[j] < data[lowIndex]) { ++"PPbOe&D  
lowIndex = j; K({,]<l5  
} $Xc<K_Z  
} ITlkw~'G  
SortUtil.swap(data,i,lowIndex); YH9] T,  
} ;}'<`(f&nX  
} -V<"Ay  
j)qh>y)  
} {U-EBXV  
Mu%,@?zM^/  
Shell排序: Fsj[JE  
dwMwd@*j  
package org.rut.util.algorithm.support; x's-UO"^  
UdJV;T'rm  
import org.rut.util.algorithm.SortUtil; |h/2'zd^-  
,0~TvJS  
/** SH|$Dg  
* @author treeroot /z:K#  
* @since 2006-2-2 kq0m^`  
* @version 1.0 q Db}b d5  
*/ c%.& F  
public class ShellSort implements SortUtil.Sort{ nB0 ol-<  
D/UGN+  
/* (non-Javadoc) _I4sy=tYXK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dxWw%_Q  
*/ = g}yA=.  
public void sort(int[] data) { JvaaBXkS\  
for(int i=data.length/2;i>2;i/=2){ c.v)M\:  
for(int j=0;j insertSort(data,j,i); [F EQ@  
} ?s33x#  
} gwNkjI= ,  
insertSort(data,0,1); pj]<i.p  
} Zh^w)}(W  
 64fG,b  
/** `Cxe`w4  
* @param data ;xwQzu%M>5  
* @param j {H2i+"cF  
* @param i Y\sjm]_  
*/ CV"Y40  
private void insertSort(int[] data, int start, int inc) { HXI}f\6x  
int temp; E:k?*l  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 6~>k]G  
} yk{alSF  
} C<>.*wlp=  
} `f]O  
{8RGW0 Y  
} %A3Jd4DH  
9#!tzDOtD  
快速排序: nT"z(\i.!J  
{+Yo&F}n  
package org.rut.util.algorithm.support; Dy!fwYPA/{  
,RQ-w2j?  
import org.rut.util.algorithm.SortUtil; >B7OTGw  
PK" C+o;:  
/** 'zK*?= ^jk  
* @author treeroot i;Y^}2   
* @since 2006-2-2 n TG|Isa  
* @version 1.0 =C|^C  
*/ aDuanGC/V  
public class QuickSort implements SortUtil.Sort{ B!@0(A  
pdSyx>rJ  
/* (non-Javadoc) *gVv74;;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ez{&Y>n  
*/ n} {cs  
public void sort(int[] data) { LKcrr;  
quickSort(data,0,data.length-1); 9OUhV [D  
} S}X:LHr*  
private void quickSort(int[] data,int i,int j){ 4NV1v&"  
int pivotIndex=(i+j)/2; S# #W_OlrI  
file://swap fF%r$`2  
SortUtil.swap(data,pivotIndex,j); G>x0}c  
~55>uw<  
int k=partition(data,i-1,j,data[j]); 'oG'`ED"  
SortUtil.swap(data,k,j); #SueT"F  
if((k-i)>1) quickSort(data,i,k-1); fp0Va!T(V  
if((j-k)>1) quickSort(data,k+1,j); 1~ Nz6  
~\P.gSiz  
} 1 <+^$QL  
/** mLE`IKgd]  
* @param data ] ?(=rm9u  
* @param i }g?]B+0  
* @param j X6RM2  
* @return . {I7sUQ  
*/ =%LS9e^7D  
private int partition(int[] data, int l, int r,int pivot) { Gj=il-Po  
do{ qM+T Wp  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 8@-US , |  
SortUtil.swap(data,l,r); A7H=#L+C  
} R 9(^CWs  
while(l SortUtil.swap(data,l,r); -|mABHjx*  
return l; *?{)i~  
} 5 *_#"  
/l L*U  
} |UG)*t/  
T[~X~dqwn"  
改进后的快速排序: [z\*Zg  
vs~*=d27Pf  
package org.rut.util.algorithm.support; o=ex{g(3  
k:sh:G+=$d  
import org.rut.util.algorithm.SortUtil; J3=jC5=J4  
R)/w   
/** _EP}el  
* @author treeroot I$$!YMm.N  
* @since 2006-2-2 i+}M#Y-O  
* @version 1.0 e 6*=Si}V  
*/ eo!z>9#.  
public class ImprovedQuickSort implements SortUtil.Sort {  BeQJ/`  
eW/Hn  
private static int MAX_STACK_SIZE=4096; 3?:}lY<,  
private static int THRESHOLD=10; Eq t61O$x  
/* (non-Javadoc) ;6?K&}J)-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /-T%yuU  
*/ Ch3##-  
public void sort(int[] data) { y}A-o_u@cD  
int[] stack=new int[MAX_STACK_SIZE]; RaAq>B WPr  
pS0T>r  
int top=-1; b> | oU  
int pivot; -Db(  
int pivotIndex,l,r; g(1'i1  
c c:xT0Y  
stack[++top]=0; ~1p f ?  
stack[++top]=data.length-1; 3XIxuQwf  
[*fnTy  
while(top>0){ t1kD5^  
int j=stack[top--]; ||qW'kNWM  
int i=stack[top--]; 3hkA`YSYt  
]^!#0(  
pivotIndex=(i+j)/2; [30e>bSf`  
pivot=data[pivotIndex]; ,Fb#%r%  
ctf'/IZ5  
SortUtil.swap(data,pivotIndex,j); - 0zo>[c/p  
$/Mk.(3'P  
file://partition ~34$D],D  
l=i-1; gN*8 zui  
r=j; 46b.= }  
do{ \>+gZc]an  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); =Oy,SX  
SortUtil.swap(data,l,r); "QMHY\C  
} Epx.0TA=t  
while(l SortUtil.swap(data,l,r); t;'__">:q  
SortUtil.swap(data,l,j); =&vV$UtV  
YPN|qn(  
if((l-i)>THRESHOLD){ `|gCbs95  
stack[++top]=i; /SyiJCx0  
stack[++top]=l-1; s;bqUY?LD  
} @^%# ]x,:  
if((j-l)>THRESHOLD){ _b+3;Dy  
stack[++top]=l+1; t<4+CC2H  
stack[++top]=j; k vb"n}  
} ak R*|iK#b  
W*P/~U=  
} ,\VNs'j  
file://new InsertSort().sort(data); #]9yzyb_y  
insertSort(data); .NjOaK)\  
}  ST{<G  
/** \eN}V  
* @param data IlH*s/  
*/ 5z0SjQ  
private void insertSort(int[] data) { by- B).7  
int temp; *h`zV<j  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ,$*$w<  
} 'E9\V\bi  
} rKO[;]_*  
} ^+-i7`|=  
$#CkI09  
} VQ +Xh  
%.]qkGZe#  
归并排序: ~GZ(Ou-&  
y8\44WKW  
package org.rut.util.algorithm.support; 5WEF^1  
OfPWqNpO  
import org.rut.util.algorithm.SortUtil; %N2=:;f  
Hg<]5  
/** }nkX-PG9  
* @author treeroot < d?O#(  
* @since 2006-2-2 UtzW5{  
* @version 1.0 nM@S`"  
*/ w9vqFtj  
public class MergeSort implements SortUtil.Sort{ `Dj-(~x  
$cc]pJy"}  
/* (non-Javadoc) QHK$2xtq|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y:xZ(RgfF  
*/ l2xM.vR  
public void sort(int[] data) { *f1MgP*GKF  
int[] temp=new int[data.length]; 8!1vsEqv  
mergeSort(data,temp,0,data.length-1); <~'\~Zd+  
} yKi* 8N"e<  
^dQ#\uy  
private void mergeSort(int[] data,int[] temp,int l,int r){ $P>ci4]t  
int mid=(l+r)/2; 23zB@aE_?1  
if(l==r) return ; k<m{Wp;-  
mergeSort(data,temp,l,mid); ~h -0rE  
mergeSort(data,temp,mid+1,r); c'[l%4U8[  
for(int i=l;i<=r;i++){ 5MT$n4zKu  
temp=data; p;g$D=2  
} l9\ *G;  
int i1=l; LG(bdj"NM  
int i2=mid+1; ;8H m#p7,  
for(int cur=l;cur<=r;cur++){ Tw=Jc 's  
if(i1==mid+1) NeQ/#[~g  
data[cur]=temp[i2++]; 0:Xvch0  
else if(i2>r) >A#]60w.  
data[cur]=temp[i1++]; @jX[Ho0W'  
else if(temp[i1] data[cur]=temp[i1++]; !M6*A1g5  
else S-GcH  
data[cur]=temp[i2++]; &;|/I`+  
} LJ9^:U  
} XB zcbS+  
(z#qkKL{^  
} y^?7de}  
,@Xl?  
改进后的归并排序: p1q"[)WVn^  
Bi9 S1 p  
package org.rut.util.algorithm.support; l@%MS\{  
YRqIC -_  
import org.rut.util.algorithm.SortUtil; uD_iyK0,  
"1t%J7c_  
/** m!V ?xGKJ  
* @author treeroot d[J+):aW  
* @since 2006-2-2 xM'bb5  
* @version 1.0 -r7*C :E  
*/ K} LmU{/t/  
public class ImprovedMergeSort implements SortUtil.Sort { 7' ]n_-fu  
8i;EpAwB  
private static final int THRESHOLD = 10; j@ lHgis  
q{ i9VJ]  
/* 2Gd.B/L6  
* (non-Javadoc) L TzD\C'  
* oSq4g{xvMH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J4&d6[40  
*/ . _Bejh  
public void sort(int[] data) { *F[@lY\p  
int[] temp=new int[data.length]; 1YL6:5n  
mergeSort(data,temp,0,data.length-1); 8c3Qd  
} QX-%<@  
/I(IT=kp  
private void mergeSort(int[] data, int[] temp, int l, int r) { Yj;KKgk  
int i, j, k; UiO%y  
int mid = (l + r) / 2; ],V_"\ATD  
if (l == r) iv*`.9TK-  
return; (R5n ND  
if ((mid - l) >= THRESHOLD) Dk[m)]w\  
mergeSort(data, temp, l, mid); 9!&fak _  
else V i V3Y  
insertSort(data, l, mid - l + 1); dI};l  
if ((r - mid) > THRESHOLD) V.?N29CA|  
mergeSort(data, temp, mid + 1, r); ~.;+uH<i  
else YMb\v4  
insertSort(data, mid + 1, r - mid); >)\x\e  
m^I+>Bp/:  
for (i = l; i <= mid; i++) { F%M4i`Vh  
temp = data; `f?v_Ui-$  
} 0]p! Bscaf  
for (j = 1; j <= r - mid; j++) { 46OYOa  
temp[r - j + 1] = data[j + mid]; I?r7dQEm  
} r)E9]"TAB  
int a = temp[l]; }86&? 0j.  
int b = temp[r]; O/ Yz6VQ  
for (i = l, j = r, k = l; k <= r; k++) { ^E{M[;sF3y  
if (a < b) { bk^W]<:z`  
data[k] = temp[i++]; LX;w~fRr.  
a = temp; 5n{J}0C  
} else { 3D|Y4OM  
data[k] = temp[j--]; BWRAz*V  
b = temp[j]; IYAvO%~  
} lV924mh  
} |, #DB  
} _kGJqyYV  
2^RWGCEv  
/** Va"H.]  
* @param data $De14  
* @param l P&I%!'<   
* @param i A@M%}h  
*/ TkHyXOk"Ky  
private void insertSort(int[] data, int start, int len) { _sLSl; /t  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); JWQd/  
} OI/m_xx@j  
} j=c=Pe"?u  
} 7m='-_w)?w  
} r?Q`b2Q  
xgeDfpF'  
堆排序: 4u0\|e@a  
NEp )V'  
package org.rut.util.algorithm.support; TNun)0p  
l}w9c`f  
import org.rut.util.algorithm.SortUtil; V}=%/OY?  
*XN|ZGl/  
/** [ =/Yo1:v  
* @author treeroot 9NzK1V0X  
* @since 2006-2-2 ;6+e!h'1  
* @version 1.0 6WI-ZEVp&  
*/ P}kBqMM  
public class HeapSort implements SortUtil.Sort{ 5@c/,6l  
n@1;5)&k~  
/* (non-Javadoc) #WE"nh9f|z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PH!^ww6  
*/ 4sJM!9eb[  
public void sort(int[] data) { -o: if F|  
MaxHeap h=new MaxHeap(); 'OEh'\d+x  
h.init(data); i*ibx;s-  
for(int i=0;i h.remove(); Z:_ wE62'  
System.arraycopy(h.queue,1,data,0,data.length); JdYmUM|K/c  
} dOG]Yjc  
pX 4:WV  
private static class MaxHeap{ uO]^vP]fT  
7 k:w3M  
void init(int[] data){ U -h'a: K  
this.queue=new int[data.length+1]; |aWeo.;c  
for(int i=0;i queue[++size]=data; KkD.n#A  
fixUp(size); ^lw0} i  
} 3jeB\  
} Gz09#nFZk  
KH=4A-e,0  
private int size=0; hKx*V"7/#\  
_.}1 Y,Q  
private int[] queue; :2v^pg|  
c qWX*&2_  
public int get() { '>"riEk  
return queue[1]; mHj3ItXUu  
} 6 (M^`&fl  
;7/ ;4Z  
public void remove() { 8,VX%CS#q  
SortUtil.swap(queue,1,size--); xJcM1>cT>  
fixDown(1); yiT)m]E d  
} TK! D=M  
file://fixdown 5Yxs_t4  
private void fixDown(int k) { &PE/\_xD_  
int j; NI<;Lm  
while ((j = k << 1) <= size) { &<Iyb}tA?  
if (j < size %26amp;%26amp; queue[j] j++; `qXCY^BH2  
if (queue[k]>queue[j]) file://不用交换 E\$7tXQK6  
break; o x|K2A  
SortUtil.swap(queue,j,k); :NCY6? [Dz  
k = j; s8O.yL  
} (Ci{fY6`  
} J`I^F:y*  
private void fixUp(int k) { !Py SYY  
while (k > 1) { LvM;ZfAEv  
int j = k >> 1; 0aWy!d  
if (queue[j]>queue[k]) BI|BfO%F$j  
break; 1K&_t  
SortUtil.swap(queue,j,k); N'5AU (  
k = j; nuvRjd^N  
} j Z6]G{  
} MJyz0.9c  
{?+dVLa^;  
} - WEEnwZ  
Q`0 k=<  
} wO-](3A-8P  
{p90   
SortUtil: 7>@g)%",  
H Z)an  
package org.rut.util.algorithm; L!>EW0  
HxE`"/~.7k  
import org.rut.util.algorithm.support.BubbleSort; i!nPiac  
import org.rut.util.algorithm.support.HeapSort; Le?yzf  
import org.rut.util.algorithm.support.ImprovedMergeSort; SWq5=h  
import org.rut.util.algorithm.support.ImprovedQuickSort; s.uw,x  
import org.rut.util.algorithm.support.InsertSort; bdxmJ9a:R  
import org.rut.util.algorithm.support.MergeSort; L/+KY_b:*  
import org.rut.util.algorithm.support.QuickSort; s7 K](T4  
import org.rut.util.algorithm.support.SelectionSort; q8=hUD%5C  
import org.rut.util.algorithm.support.ShellSort; #Rw9 Iy4  
^.Xom~  
/** PV(TDb:0  
* @author treeroot q@+#CUa&n  
* @since 2006-2-2 $~G=Hcl9  
* @version 1.0 n[f<]4<  
*/ IncHY?ud<  
public class SortUtil { }#bX{?f  
public final static int INSERT = 1; H)5V \  
public final static int BUBBLE = 2; MJ% gF=$X  
public final static int SELECTION = 3; { K,KIj"  
public final static int SHELL = 4; P;8D|u^\*  
public final static int QUICK = 5; wI{ED  
public final static int IMPROVED_QUICK = 6; O_~vl m<#  
public final static int MERGE = 7; C)H1<Br7  
public final static int IMPROVED_MERGE = 8; +\D?H.P  
public final static int HEAP = 9; "Vw;y+F}  
WU:r:m+ >  
public static void sort(int[] data) { VNggDKS~K  
sort(data, IMPROVED_QUICK); :enmMB#%  
} _?m%i]~o  
private static String[] name={ 7[/1uI9U8K  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 7j//x Tr}a  
}; -ge :y2R_w  
xlHC?d0}  
private static Sort[] impl=new Sort[]{ 3[T<pAZ  
new InsertSort(), ?c7} v  
new BubbleSort(), ^6?)EM#  
new SelectionSort(), J|gRG0O9Ya  
new ShellSort(), }$wWX}@  
new QuickSort(), ==^9_a^  
new ImprovedQuickSort(), +`p@md2L1  
new MergeSort(), QKAt%"1&  
new ImprovedMergeSort(), ?*K{1Ghf  
new HeapSort() 4\rwJD<  
}; M#'j7EMu  
9~lC/I')t  
public static String toString(int algorithm){ 2sXNVo8`w"  
return name[algorithm-1]; uB*Y}"Fn  
} ),%(A~\  
-0G/a&ss  
public static void sort(int[] data, int algorithm) { $ KAOJc4<  
impl[algorithm-1].sort(data); 0^G5 zQlj  
} -V\$oVS0S  
JsY|Fv  
public static interface Sort { !o{>[  
public void sort(int[] data); ]A]EED.ZH  
} g/_j"Nn  
] l@Mo7|w  
public static void swap(int[] data, int i, int j) { kaUEv\T   
int temp = data; &40# _>W7  
data = data[j]; y$h.k"x`  
data[j] = temp; #|ILeby  
} R4 x!b`:i  
} !h[xeLlU  
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