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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。 ->'xjD  
插入排序: FKy2C:R(]  
+&[X7r<  
package org.rut.util.algorithm.support; Uy<n7*H  
k1fX-2H  
import org.rut.util.algorithm.SortUtil; )v %tyU  
/** 7 b 8pWM  
* @author treeroot #:=*n(GT  
* @since 2006-2-2 j/uzsu+  
* @version 1.0 s1J( -O  
*/ QPX3a8w*  
public class InsertSort implements SortUtil.Sort{ y'_2|5!Qs  
22Oe~W;  
/* (non-Javadoc) aPin6L$;)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LZ8xh  
*/ !=?Q>mz  
public void sort(int[] data) { `!C5"i8+i2  
int temp; $s,(-C   
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); BOme`0A  
} wRJ`RKJ-T  
} z q@"qnr  
} -H$C3V3]  
c3N,P<#  
} [fg-"-+:M  
vP^V3  
冒泡排序: v\R-G  
@O8X )  
package org.rut.util.algorithm.support; @DK`#,  
9:7&`J lC#  
import org.rut.util.algorithm.SortUtil; zd3^k<  
|H;+9(  
/** U,V+qnS  
* @author treeroot Jm-bE 8b  
* @since 2006-2-2 i}v3MO\X  
* @version 1.0 !Aw.)<teW  
*/ V L;<+C~  
public class BubbleSort implements SortUtil.Sort{ ddw^oU  
<X ([VZ  
/* (non-Javadoc) MLN+ BuS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ie/dMB=t  
*/ bf6:J `5Z  
public void sort(int[] data) { $j"BHpN  
int temp; RU% 4~WC  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Amv:dh  
if(data[j] SortUtil.swap(data,j,j-1); ]\*_}  
} ;]T;mb>  
} Rg 5kFeS  
} j7b4wH\#  
} ~c@@m\C"b  
(1Klj+"p%  
} y0,>_MS  
!_>o2  
选择排序: hx8.  
{11xjvAD  
package org.rut.util.algorithm.support; wpcqgc  
9S8V`aC  
import org.rut.util.algorithm.SortUtil; | A# \5u  
0+Q; a  
/** yo :63CPP  
* @author treeroot wS+j^ ;"  
* @since 2006-2-2 #dkSAS  
* @version 1.0 J6Nhpzp  
*/ U|+ c&TY  
public class SelectionSort implements SortUtil.Sort { W('V2Z-q  
Dmr3r[  
/* 4c@_u8  
* (non-Javadoc) bd)Sb?  
* &+ UnPE(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VUzRA"DP|  
*/ !%/(a)B$^$  
public void sort(int[] data) { ;!)gjiapw  
int temp; c6tH'oV  
for (int i = 0; i < data.length; i++) { oVY_|UujG  
int lowIndex = i; wLy:S.r  
for (int j = data.length - 1; j > i; j--) { X08[,P#I  
if (data[j] < data[lowIndex]) { L@`:mK+;  
lowIndex = j; lCGEd  3  
} smHQ'4x9  
} H Em XB=  
SortUtil.swap(data,i,lowIndex); lA n^)EL  
} .qrS[ w  
} ~=?^v[T1  
Fz2C XC  
} x]vyt}oCmk  
UVgDm&FF  
Shell排序: 9(hI%idq  
]fJ9.Js  
package org.rut.util.algorithm.support; ?gG%FzfQ/  
p%IVWeZnx  
import org.rut.util.algorithm.SortUtil; ?~ /_&=NSx  
W$:D#;jz`h  
/** %!]CP1S  
* @author treeroot Gk!CU"`sP  
* @since 2006-2-2 cpM]APF-  
* @version 1.0 5EL&?\e  
*/ 3 ]w a8|  
public class ShellSort implements SortUtil.Sort{ /@0  
<=@6UPsn2  
/* (non-Javadoc) ek`6 Uf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lVgin54Q  
*/ R_b)2FU1y  
public void sort(int[] data) { v-}B T+  
for(int i=data.length/2;i>2;i/=2){ }[]1`2qD  
for(int j=0;j insertSort(data,j,i); Wx8n)  
} _g6H&no[  
} 56H~MnX  
insertSort(data,0,1); Za7!n{? 0  
} 0[ZwtfL1  
Aq_?8Cd  
/** !jRs5{n^Ol  
* @param data 51`*VR]`K  
* @param j  ,<U  
* @param i L<p.2[3  
*/ a<P?4tbF  
private void insertSort(int[] data, int start, int inc) { \{ff7_mLo  
int temp; Qk].^'\  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 3#Xv))w1  
} vue=K  
} 2cko GafG{  
} "` kSI&2  
XRXQ 7\n  
} F,@uYMQs  
Xe@:Aun  
快速排序: 5wb R}`8  
7|X.E  
package org.rut.util.algorithm.support; v[<;z(7Qk  
=qS\+  
import org.rut.util.algorithm.SortUtil; B X Et]+Q  
1=mb2A  
/** !uAqY\Is  
* @author treeroot #Wely~  
* @since 2006-2-2 $pj;CoPm  
* @version 1.0 rM)#}eZK!  
*/ bjql<x5d  
public class QuickSort implements SortUtil.Sort{ _ "lW  
h{?cs%lZ  
/* (non-Javadoc) 7a4h7/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fDKV`  
*/ 0134mw%jk  
public void sort(int[] data) { iV.j!H7o  
quickSort(data,0,data.length-1); (`&E^t  
} Q,n Xc  
private void quickSort(int[] data,int i,int j){ E6clVa  
int pivotIndex=(i+j)/2; InB'Ag"  
file://swap 7xCm"jgP  
SortUtil.swap(data,pivotIndex,j); U\(T<WX,  
H+ 7Fw'u  
int k=partition(data,i-1,j,data[j]); YkI_i(  
SortUtil.swap(data,k,j); sEcg;LFp  
if((k-i)>1) quickSort(data,i,k-1); y#-~L-J_R  
if((j-k)>1) quickSort(data,k+1,j); Rz=wInFs  
A(ZtA[G  
} dd!Q[]$ }  
/** >5j&Q#Bu  
* @param data EsjZ;D, c(  
* @param i P5oYv  
* @param j 9lc{{)m2)  
* @return XWBTBL  
*/ \04 (V'`U  
private int partition(int[] data, int l, int r,int pivot) { aa/_:V@$~  
do{ ]I(<hDuRp  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); )q>q]eHz  
SortUtil.swap(data,l,r); {@ Z%6%'9  
} Aw=GvCo<  
while(l SortUtil.swap(data,l,r); ?Y_!Fr3V  
return l; [Ee <SB{  
} [}Y_O*C !  
mEq>{l:  
}  u'qc=5  
l'kVi  
改进后的快速排序: &6\f;T4  
{1[f9uPS  
package org.rut.util.algorithm.support; !'8jy_<9  
i} ?\K>BWq  
import org.rut.util.algorithm.SortUtil; 4x?4[J~u[  
betTAbF  
/** -5<G^AS  
* @author treeroot ~otV'=/my  
* @since 2006-2-2 |!uC [=  
* @version 1.0 UOkVU*{  
*/ gCv[AIE_m  
public class ImprovedQuickSort implements SortUtil.Sort { Y&1Yc)*O  
|]tsf /SA  
private static int MAX_STACK_SIZE=4096; w! ':Ws  
private static int THRESHOLD=10; YL9Tsw  
/* (non-Javadoc) SI:Iv:>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lcuqzX{7  
*/ (]sk3 A  
public void sort(int[] data) { )KcY<K  
int[] stack=new int[MAX_STACK_SIZE]; Ql? >,FZ  
hpz DQ6-Y  
int top=-1; ?<D1] Xv  
int pivot; ]QmY`pTB`  
int pivotIndex,l,r; 'Ad|*~  
PAs.T4Av^  
stack[++top]=0; '2v$xOh!y  
stack[++top]=data.length-1; dyuT-.2  
wo_iCjmK  
while(top>0){ rwY{QBSf  
int j=stack[top--]; mZ4I}_\,  
int i=stack[top--]; I0(nRu<  
e4Xo(EY &  
pivotIndex=(i+j)/2; G|)fZQ1nS  
pivot=data[pivotIndex]; a\Dw*h?b~  
yI8 /m|  
SortUtil.swap(data,pivotIndex,j); B}npom\tC  
J|N>}di  
file://partition A:,R.P>`C  
l=i-1; -ZBSkyMGy  
r=j;  b~Oc:  
do{ F/0x` l  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Nj`Miv o  
SortUtil.swap(data,l,r); 0j2M< W#  
} .:2=VLujU  
while(l SortUtil.swap(data,l,r); jjJ l\Vn  
SortUtil.swap(data,l,j); 6x"|,,&MD0  
N t_7Z  
if((l-i)>THRESHOLD){ -0Q^k\X-  
stack[++top]=i; >@L^^ -r  
stack[++top]=l-1; -mqTlXM  
} PZSi}j/  
if((j-l)>THRESHOLD){ q%c"`u/v/  
stack[++top]=l+1; t$5)6zG  
stack[++top]=j; @4%x7%+[c  
} R4[dh.lf  
F=8gtk|U  
} ~6Df~uN  
file://new InsertSort().sort(data); )}5f'TK  
insertSort(data); & *!) d"  
} y2NVx!?n  
/** Xsv^GmP+  
* @param data >d#Ks0\&  
*/ \>(S?)6  
private void insertSort(int[] data) { 0O7VM)[  
int temp; @-5V~itW  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); \_PD@A9  
} Y<9Lqc.i  
} <[<]+r&*  
} 50^T \u  
J-+p]xG  
} "xY]&  
%eLf6|1x  
归并排序: D}7G|gX1  
5sK1rDN  
package org.rut.util.algorithm.support; #J)83  
[wR x)F"  
import org.rut.util.algorithm.SortUtil; SoJ'y6  
a]8}zSUK  
/** Zlf) dDn  
* @author treeroot 0@*EwI  
* @since 2006-2-2 M8iI e:{ c  
* @version 1.0 GJIM^  
*/ #Yr/GNN  
public class MergeSort implements SortUtil.Sort{ o5 |P5h  
?q+^U>wy&  
/* (non-Javadoc) f+j-M|A  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b_xGCBC  
*/ !xo; $4  
public void sort(int[] data) { @I,:(<6  
int[] temp=new int[data.length]; ,zU7UL^I  
mergeSort(data,temp,0,data.length-1); )k'4]=d <  
} v^QUYsar  
NgPY/R>  
private void mergeSort(int[] data,int[] temp,int l,int r){ RFq&#3f$  
int mid=(l+r)/2; 64h$sC0z/e  
if(l==r) return ; ;H:+w\?8f$  
mergeSort(data,temp,l,mid); )+xHv  
mergeSort(data,temp,mid+1,r); T~(AXwaJ  
for(int i=l;i<=r;i++){ vynchZ+g]  
temp=data; _/ Uer }  
} '}eA2Q>BV  
int i1=l;  ]6 ]Nr  
int i2=mid+1; ~*,e&I  
for(int cur=l;cur<=r;cur++){ o$,Dh?l  
if(i1==mid+1) p swEIa  
data[cur]=temp[i2++]; +`H{  
else if(i2>r) MY `V0  
data[cur]=temp[i1++]; =ijVT_|u0  
else if(temp[i1] data[cur]=temp[i1++]; {s/u [T_D2  
else s@c.nT%BYL  
data[cur]=temp[i2++]; 4|[)D/N  
} Q!_@Am"h  
} Y;[#~3CA  
pJpTOq\h  
} 6V@?/B  
4RYvI!  
改进后的归并排序: &z"sT*3  
'HdOW[3o  
package org.rut.util.algorithm.support; +f- E8q  
ehCZhi~  
import org.rut.util.algorithm.SortUtil; =u^{Jvl[  
ttaYtV]]  
/** gQ@fe3[  
* @author treeroot IFg(Ze~  
* @since 2006-2-2 0`L>t  
* @version 1.0 `aw5"ns^V  
*/ V;}6C&aP.  
public class ImprovedMergeSort implements SortUtil.Sort { etHkyF  
|f.R]+cH  
private static final int THRESHOLD = 10; [)&(zJHX  
uI*2}Q   
/* 4H\+vJPM  
* (non-Javadoc) Q|`sYm'.  
* ==z,vxr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m {)F9F  
*/ IT~pp _6g  
public void sort(int[] data) { [8J/# !B  
int[] temp=new int[data.length]; VP<_~OLc  
mergeSort(data,temp,0,data.length-1); Vg+jF!\7  
} MCcWRbE5#  
TnvX&Y'  
private void mergeSort(int[] data, int[] temp, int l, int r) { h5.>};"@ '  
int i, j, k; D\ H) uV`  
int mid = (l + r) / 2;  HSR^R  
if (l == r) ]1XJQW@gF  
return; 'n)]"G|  
if ((mid - l) >= THRESHOLD) {hLS,Me  
mergeSort(data, temp, l, mid); JTxHM?/G  
else @4Ox$M  
insertSort(data, l, mid - l + 1); JN Ur?+g  
if ((r - mid) > THRESHOLD) A]FjV~PB  
mergeSort(data, temp, mid + 1, r); 8@f=GJf  
else 0y"Ra%Y  
insertSort(data, mid + 1, r - mid); pM^r8kIH  
EZ.|6oug\  
for (i = l; i <= mid; i++) {  #)r  
temp = data; NzP5s&,C69  
} %z_PEqRj  
for (j = 1; j <= r - mid; j++) { B-<H8[GkG1  
temp[r - j + 1] = data[j + mid]; ,/qS1W(  
} .<!Jhf$  
int a = temp[l]; 3%JPJuNVw  
int b = temp[r]; Zu$30&U  
for (i = l, j = r, k = l; k <= r; k++) { >c~ Fg s  
if (a < b) { XSu9C zx&I  
data[k] = temp[i++]; 8u401ddg  
a = temp; "s6O|=^*  
} else { $ +`   
data[k] = temp[j--]; t&r-;sH^[  
b = temp[j]; 5DHFxym'  
} E_aDkNT  
} nEZo F  
} 1i.t^PY  
]Y%?kQ^  
/** c&Mci"n j0  
* @param data \ >@'wl  
* @param l Mpm#a0f  
* @param i &s|&cT  
*/ g]=w_  
private void insertSort(int[] data, int start, int len) { X\I"%6$  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 483BrFV  
} !Ol>![  
} %D(% lh2  
} {~"&$DY2  
} 7yU<!p?(  
.{-&3++WZ  
堆排序: Yxal%  
`dH[&=S  
package org.rut.util.algorithm.support; uqhNi!;  
(W7cQ>  
import org.rut.util.algorithm.SortUtil; PQmgv&!DP  
6wzTX8  
/** s uT#k3  
* @author treeroot >-s\$8En'  
* @since 2006-2-2 A;t6duBDf/  
* @version 1.0 >f [Lb|t  
*/ Zhl}X!:c?\  
public class HeapSort implements SortUtil.Sort{ Z/-!-  
9Bl c  
/* (non-Javadoc) `7|\Gqy  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MCOz-8@|Y  
*/ p/|": (U  
public void sort(int[] data) { \X5>HPB  
MaxHeap h=new MaxHeap(); 'J&&F2O%  
h.init(data); ,[To)x5o  
for(int i=0;i h.remove(); SBBDlr^P  
System.arraycopy(h.queue,1,data,0,data.length); -q9`Btz  
} niZ/yW{w  
\($EYhx  
private static class MaxHeap{ sv<U$M~)X  
D8otU DB{  
void init(int[] data){ ':kj\$U  
this.queue=new int[data.length+1]; RO-ABFEi(  
for(int i=0;i queue[++size]=data; P +U=/$o  
fixUp(size); 7-nz'-'  
} CU3[{a  
} }MKm>N  
E>j*m}b  
private int size=0; y{~l&zrl  
y*,3P0*z  
private int[] queue; 6~Y-bn"%D5  
JzA`*X[  
public int get() { IS; F9{  
return queue[1]; nu {bEp  
} X G fLi  
 -lM4*+f  
public void remove() { p&w XRI  
SortUtil.swap(queue,1,size--); $gsn@P>"  
fixDown(1); 6Sh0%F s  
} ipB*]B F[  
file://fixdown ]| oh1q  
private void fixDown(int k) { |A_yr/f  
int j; 5}3Q}o#  
while ((j = k << 1) <= size) { krkRP%jy  
if (j < size %26amp;%26amp; queue[j] j++; _ukKzY  
if (queue[k]>queue[j]) file://不用交换 S$q:hXZ#e  
break; ,5jE9  
SortUtil.swap(queue,j,k); HFD5* Z~M  
k = j; ,bRvj8"M  
} \/C-e  
} ^E&':6(  
private void fixUp(int k) { ag*RQ  
while (k > 1) { y0vo-)E]-]  
int j = k >> 1; {s}@$rW  
if (queue[j]>queue[k]) ?pdvFM  
break; k36%n *4  
SortUtil.swap(queue,j,k); <>,V> k|  
k = j; b?-Ep?G'\  
} [m7jZOEu  
} wrq0fHwM  
Q7O8']~n  
} D'e'xU  
0R~{|RHM  
} EJP##eGx  
mBgMu@zt)  
SortUtil: :&Xy#.un  
is`Eqcj`dr  
package org.rut.util.algorithm; yu~~"Rq)  
^YzFEu$  
import org.rut.util.algorithm.support.BubbleSort; :70cOt~Z  
import org.rut.util.algorithm.support.HeapSort; E<;C@B  
import org.rut.util.algorithm.support.ImprovedMergeSort; 1,fjdd8OM;  
import org.rut.util.algorithm.support.ImprovedQuickSort; ot P7;l  
import org.rut.util.algorithm.support.InsertSort; HaI  
import org.rut.util.algorithm.support.MergeSort; ) 'x4#5]  
import org.rut.util.algorithm.support.QuickSort; ;Dg8>  
import org.rut.util.algorithm.support.SelectionSort;  Z+ [Nco  
import org.rut.util.algorithm.support.ShellSort; NZ`W`#{  
g9OO#C>  
/** |S#)[83*3  
* @author treeroot {'8a' 9\  
* @since 2006-2-2 zRsG$)B  
* @version 1.0 DWDL|4 og  
*/ Gc}d#oo*k  
public class SortUtil { SLRQ3<0W_  
public final static int INSERT = 1; }./__gJ  
public final static int BUBBLE = 2; h0`@yo  
public final static int SELECTION = 3; Jla ;^X  
public final static int SHELL = 4; vsg"!y@v  
public final static int QUICK = 5; *,!6#Z7  
public final static int IMPROVED_QUICK = 6; GYYk3\r  
public final static int MERGE = 7; !u)ve h3x  
public final static int IMPROVED_MERGE = 8; T:S+P t~  
public final static int HEAP = 9; U}(*}Ut  
nE)?P*$3Z  
public static void sort(int[] data) { =p|,~q&i  
sort(data, IMPROVED_QUICK); i[A$K~f  
} <e|I?zI9-  
private static String[] name={ u$d T^c  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" %{s<h6{R  
}; HjUs}#</  
k8w }2Vw  
private static Sort[] impl=new Sort[]{ MHJH@$|]  
new InsertSort(), &^^zm9{  
new BubbleSort(), hkeOe  
new SelectionSort(), h\afO  
new ShellSort(), AjB-&Z  
new QuickSort(), PvX>+y5  
new ImprovedQuickSort(), hrPm$`  
new MergeSort(), 4M'y9(  
new ImprovedMergeSort(), 4v cUHa|4  
new HeapSort() !},_,J~(|  
}; _] veTAV  
w=I8f}(  
public static String toString(int algorithm){ C]K|;VQ  
return name[algorithm-1]; !8M]n  
} vL(7|K  
eS9uKb5n(  
public static void sort(int[] data, int algorithm) { ^2}0lP|  
impl[algorithm-1].sort(data); gtWJR  
} $+qJ#0OE$  
pTPWToKh  
public static interface Sort { 0\84~t'[  
public void sort(int[] data); >.N?y@  
} z6#~B&  
7<DlA>(oUX  
public static void swap(int[] data, int i, int j) { G4][`C]8c  
int temp = data; oF[l<OY4  
data = data[j]; 6tBL?'pG  
data[j] = temp; jFfuT9oId  
} `+cc{k  
} ,,vl+Z <&  
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