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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。 P>y@kPi   
插入排序: t >L2  
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package org.rut.util.algorithm.support; JinUV6cr  
s$zLiQF;  
import org.rut.util.algorithm.SortUtil; b <tNk]7  
/** S*,17+6dV  
* @author treeroot E+j/ Cu  
* @since 2006-2-2 !4ocZmj\  
* @version 1.0 KaLzg5is  
*/ q\9JgD)  
public class InsertSort implements SortUtil.Sort{ F#3Q_G^/  
j"8ZM{aO  
/* (non-Javadoc) SpIv#?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <v"R.<  
*/ z{%<<pZ  
public void sort(int[] data) { @f_Lp%K  
int temp; W- $Z(Z XL  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ")1:F>  
} *l(7D(#  
} WJ]T\DI  
} *[Imn\hu  
`Y0%c Xi3  
} m;$ b'pT  
[CTnXb  
冒泡排序: mtpeRVcF  
T )&A2q  
package org.rut.util.algorithm.support; [@_Jj3`4  
+i6GHBn~J  
import org.rut.util.algorithm.SortUtil; xBj 9y u  
1>.Ev,X+e  
/** \:P>le'1  
* @author treeroot DcS+_>a\{l  
* @since 2006-2-2 lwR<(u31e  
* @version 1.0 ]]HNd7Vh  
*/ 5p,RI&nlN  
public class BubbleSort implements SortUtil.Sort{ W Tcw4  
;_XFo&@  
/* (non-Javadoc) K,tQ!kk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PioZIb/{  
*/ ]HbY  
public void sort(int[] data) { av(6wht8  
int temp; 3RUy, s  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 7kC^ 30@T3  
if(data[j] SortUtil.swap(data,j,j-1); +Z,;,5'5G  
} Hkg2P ,2  
} #QZe,"C9`  
} m%0p\Y-/  
} 9v#CE!  
7:e{;iG  
} b8H{8{wi|  
YByLoM*  
选择排序: Q1lyj7c#x  
V~qNyOtA]  
package org.rut.util.algorithm.support; V_)-#=J  
),_@WW;k  
import org.rut.util.algorithm.SortUtil; o]odxr  
n5|fHk^s  
/** O4 w(T  
* @author treeroot "BAK !N$9  
* @since 2006-2-2 xKbXt;l2  
* @version 1.0 BqEI(c 6  
*/ r[e##M  
public class SelectionSort implements SortUtil.Sort { (xycJ`N  
?C]vS_jAh  
/* 6dHOf,zjm  
* (non-Javadoc) pG_;$8Hc  
* k``_EiV4t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y4yhF8E>;U  
*/ ^ "E^zHM(  
public void sort(int[] data) { 9p85Pv [M=  
int temp; )w em|:H  
for (int i = 0; i < data.length; i++) { rD tY[  
int lowIndex = i; =&6eM2>P  
for (int j = data.length - 1; j > i; j--) { JhYe6y[q  
if (data[j] < data[lowIndex]) { Z<oaK  
lowIndex = j; *9 {PEx  
} MyOd,vU  
} DmK57V4L^  
SortUtil.swap(data,i,lowIndex); xl{=Y< ;  
} ]dVGUG8  
} :x3QRF  
t}_r]E,{u  
} LPXi+zj  
39c2pV[  
Shell排序: !6 #X>S14  
_=>He=v/  
package org.rut.util.algorithm.support; P-[-pi@  
#I.+aV+2oQ  
import org.rut.util.algorithm.SortUtil; u$z`   
e v}S+!|U  
/** +SzU  
* @author treeroot 3qgS&js 7  
* @since 2006-2-2 uuEV_"X  
* @version 1.0 A.F%Ycq  
*/ a9e>iU  
public class ShellSort implements SortUtil.Sort{ ?Rb9|`6  
3=#<X-);  
/* (non-Javadoc) E#RDqL*J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xH4m|  
*/ xa'*P=<)C'  
public void sort(int[] data) { F-QzrquS  
for(int i=data.length/2;i>2;i/=2){ Xxj- 6i  
for(int j=0;j insertSort(data,j,i); 8bGd} (  
} Mc lkEfn  
} W_293["lS  
insertSort(data,0,1); R>|{N9  
} Ng&%o  
- nm"of\o  
/** 2YL?,uLS  
* @param data +bxYG D  
* @param j &$BjV{,/zc  
* @param i 1y &\5kB  
*/ >dXGee>'M  
private void insertSort(int[] data, int start, int inc) { -]Bq|qTH[(  
int temp; >tS'Q`R  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); J`Q>3] wL  
} $GV7o{"&  
} 3m[vXr?  
} PN%zIkbo  
^S<Y>Nm]  
} Y>z>11yEB0  
DPY}?dC  
快速排序: YRk(u7:0  
D>r&}6<  
package org.rut.util.algorithm.support; &A/]pi-\  
 0q  
import org.rut.util.algorithm.SortUtil; >~rTqtKd  
O^PKn_OJ  
/** ?5__oT  
* @author treeroot 3d8L6GJ  
* @since 2006-2-2 R+:yVi[F]U  
* @version 1.0 OF>mF~  
*/ 2>9C-VL2  
public class QuickSort implements SortUtil.Sort{ z|uDy2  
1#g2A0U,  
/* (non-Javadoc) <V'@ks%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *-WpZGh  
*/ OdbEq?3S/?  
public void sort(int[] data) { g9pZ\$J&  
quickSort(data,0,data.length-1); h f)?1z4  
} mM~qBrwL  
private void quickSort(int[] data,int i,int j){ $p8xEcQdU#  
int pivotIndex=(i+j)/2; T~?Ff|qFC  
file://swap ' {OgN}'{  
SortUtil.swap(data,pivotIndex,j); T"Y+m-<%  
v~+(GqR=+  
int k=partition(data,i-1,j,data[j]); g'f@H-KCD  
SortUtil.swap(data,k,j); tIi&;tw]  
if((k-i)>1) quickSort(data,i,k-1); ldcqe$7,  
if((j-k)>1) quickSort(data,k+1,j); 68|E9^`l  
S\EyCi+  
} f%JIp#B  
/** ITQA0PI SL  
* @param data w(Ovr`o?9t  
* @param i Jrf=@m\dk  
* @param j KkyVSoD\  
* @return BZ#(   
*/ unzr0x {  
private int partition(int[] data, int l, int r,int pivot) { pad*oPH,  
do{ g axsv[W>^  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); R{4^t97wH{  
SortUtil.swap(data,l,r); #Pau\|e_  
} uc{Ihw  
while(l SortUtil.swap(data,l,r); g/_5unI}u  
return l; ~At7 +F[  
} XW H5d-  
I|!OY`ko  
} hag$GX'2k  
MKCsv+   
改进后的快速排序: w "F 9l  
\7eUw,~Q>  
package org.rut.util.algorithm.support; ,t744k')  
c):/!Q  
import org.rut.util.algorithm.SortUtil; 539>WyG5  
Es`Px_k  
/** DK~xrU'  
* @author treeroot ~Cttzn]pR  
* @since 2006-2-2 (x|T+c"bAX  
* @version 1.0 G>=*yqo  
*/ octL"t8w  
public class ImprovedQuickSort implements SortUtil.Sort { C& f= ywi0  
l30EKoul)  
private static int MAX_STACK_SIZE=4096; Wi<m{.%\E  
private static int THRESHOLD=10; =s{>Fsm1  
/* (non-Javadoc) *Q.>-J<S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =BeygT^  
*/ CW K7wZM  
public void sort(int[] data) { uZYF(Yu  
int[] stack=new int[MAX_STACK_SIZE]; }tu C}  
Q*cf(  
int top=-1; <=&`ZH   
int pivot; e"cXun4nS=  
int pivotIndex,l,r; T{^rt3a  
uMv,zO5  
stack[++top]=0; bWS&Yk(  
stack[++top]=data.length-1; FxY}m  
lFj]4  
while(top>0){ .43'HV  
int j=stack[top--]; RC"MdcD:]y  
int i=stack[top--]; B mb0cF Q  
RBd7YWo\|j  
pivotIndex=(i+j)/2; 8W7J3{d  
pivot=data[pivotIndex]; I][*j  
1.hyCTnI  
SortUtil.swap(data,pivotIndex,j); Ee#q9Cx^J  
?UR0:f:}oc  
file://partition  }v{LRRi  
l=i-1; *>}@7}f  
r=j; E&w7GZNt  
do{ I 34>X`[o  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); BOX2O.Pm  
SortUtil.swap(data,l,r); G.B2('  
} 2[yd> (`  
while(l SortUtil.swap(data,l,r);  /maJtX'  
SortUtil.swap(data,l,j); 2tO,dx  
4at?(B+  
if((l-i)>THRESHOLD){ DCa^ u'f  
stack[++top]=i; 9=tIz  
stack[++top]=l-1; Gz0]}]A  
} 3=[mP, pLh  
if((j-l)>THRESHOLD){ y.k~Y0  
stack[++top]=l+1; 8Fh)eha9f  
stack[++top]=j; U/M>?G~  
} >Tx?%nQ  
TX/Xt7#R:  
} |e&\<LwsP  
file://new InsertSort().sort(data); 'Is kWgc  
insertSort(data); y^ *~B(T{  
} %;' s4ly  
/** .{^5X)  
* @param data ^\% (,KNo  
*/ 8,%^ M9zBP  
private void insertSort(int[] data) { gJ{)-\  
int temp; ;(%QD 3>  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Ax@$+/Z!  
} ~~P5k:  
} kTB 0b*V  
} Om@;J%u/  
5DZ#9m/  
} gD?l-RT>  
uW{l(}0N  
归并排序: .<FH>NW)  
X?',n 1  
package org.rut.util.algorithm.support; j$:~Rek  
00y!K m_D  
import org.rut.util.algorithm.SortUtil; uzPV To|=  
#{6/ (X  
/** xo&_bMO  
* @author treeroot ^ @5QP$.  
* @since 2006-2-2 V!=,0zy~Z  
* @version 1.0 3d]S!=4H"  
*/ J8(lIk:e  
public class MergeSort implements SortUtil.Sort{ &z3o7rif$  
0d&6lqTo  
/* (non-Javadoc) NI]N4[8(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aXYY:;  
*/ Y.UFbrv  
public void sort(int[] data) { 'H!Uh]!  
int[] temp=new int[data.length]; BU_nh+dF  
mergeSort(data,temp,0,data.length-1); AT3Mlz~7#  
} tNI^@xdim1  
X_h}J=33Q  
private void mergeSort(int[] data,int[] temp,int l,int r){ cT,sh~-x,  
int mid=(l+r)/2; bE..P&"  
if(l==r) return ; 4$<JHo @.  
mergeSort(data,temp,l,mid); cq]6XK-W  
mergeSort(data,temp,mid+1,r); ~ 7s!VR  
for(int i=l;i<=r;i++){ q9_OGd|P  
temp=data; * u>\57W  
} 7$=In K  
int i1=l; 0S~rgq|O  
int i2=mid+1; ?`ZU R& 20  
for(int cur=l;cur<=r;cur++){ vE?G7%,  
if(i1==mid+1) HV|,}Wks6s  
data[cur]=temp[i2++]; u6agoK|^9  
else if(i2>r) h]gp^?=  
data[cur]=temp[i1++]; n>YKa)|W`  
else if(temp[i1] data[cur]=temp[i1++]; NLqzi%s  
else da(<K}  
data[cur]=temp[i2++]; PZ9I`P! C  
} tsjrRMR  
} cwg"c4V  
K%oG,-wdg  
} D,feF9  
,qxu|9L  
改进后的归并排序: bn5 Su=]  
5j(k:a+!H  
package org.rut.util.algorithm.support; ~>|ziHx  
8Z~EwY*  
import org.rut.util.algorithm.SortUtil; iBa A9  
$& td=OK  
/** 3w'tH4C[Y  
* @author treeroot S1_RjMbYM  
* @since 2006-2-2 #6=  
* @version 1.0 {<KVx9  
*/ ?caSb =f  
public class ImprovedMergeSort implements SortUtil.Sort { [W&T(%(W-  
S9.o/mr  
private static final int THRESHOLD = 10; 77Dn97l)&  
hgq;`_;1,  
/* ZECfR>`x  
* (non-Javadoc) e^voW"?%  
* /N{*"s2)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (LCfUI6;  
*/ })%{AfDRF  
public void sort(int[] data) { h_'*XWd@  
int[] temp=new int[data.length]; }K(TjZR  
mergeSort(data,temp,0,data.length-1); 9* M,R,y  
} o]V^};B  
2,b$7xaf  
private void mergeSort(int[] data, int[] temp, int l, int r) { !nnC3y{G  
int i, j, k; [/r(__.  
int mid = (l + r) / 2; oB7_O-3z  
if (l == r) _[BP 0\dPW  
return; hZb_P\1X  
if ((mid - l) >= THRESHOLD) E1 2uZ$X  
mergeSort(data, temp, l, mid); :2`e(+Uz  
else ,P0) 6>  
insertSort(data, l, mid - l + 1); 8s@3hXD&  
if ((r - mid) > THRESHOLD) >t+P(*u  
mergeSort(data, temp, mid + 1, r); !N^@4*  
else {.Jlbi9!  
insertSort(data, mid + 1, r - mid); xmoxZW:  
:3 mh@[V  
for (i = l; i <= mid; i++) { +}AI@+  
temp = data; "AqB$^S9t  
} 8oGRLYU N  
for (j = 1; j <= r - mid; j++) { 2 %]X+`+O  
temp[r - j + 1] = data[j + mid]; $??I/6  
} HPVEnVn  
int a = temp[l]; 2=}FBA,2  
int b = temp[r]; x8|J-8A(  
for (i = l, j = r, k = l; k <= r; k++) { Hl=xW/%6y  
if (a < b) { 2\$oV  
data[k] = temp[i++]; yHaGkm  
a = temp; c71y'hnT  
} else { dE3) | %  
data[k] = temp[j--]; | -H& o]  
b = temp[j]; Id9TG/H7  
} er\|i. Y  
} L~3Pm%{@A  
} 0jfuBj5!  
4+tEFxvX&  
/** ['D]>Ot68  
* @param data U<XG{<2  
* @param l "dlV k~  
* @param i x{n=;JD  
*/ ;Rf'P}"]  
private void insertSort(int[] data, int start, int len) { zQ PQ  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); E{(;@PzE  
} xIn:ZKJ'  
} i.#:zU%o  
} !,PWb3S  
} j>kqz>3  
`]aeI'[}R  
堆排序: rm_Nn8p,  
@4#vm@Yf_  
package org.rut.util.algorithm.support; 7zc^!LrW<  
&^nGtW%a 9  
import org.rut.util.algorithm.SortUtil; iy"*5<;*DD  
%iB,IEw  
/** `D9$v(Ztr  
* @author treeroot |W^IlqTH  
* @since 2006-2-2 :T~  [  
* @version 1.0 EQ_aa@M7  
*/ h+,@G,|D  
public class HeapSort implements SortUtil.Sort{ gqR(.Pu  
\)e'`29;  
/* (non-Javadoc) 6LhTBV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v:#tWEbo-  
*/ [F7hu7zY8  
public void sort(int[] data) { KPki}'GO  
MaxHeap h=new MaxHeap(); -\MG}5?!  
h.init(data); FI.\%x  
for(int i=0;i h.remove(); d(K +);!  
System.arraycopy(h.queue,1,data,0,data.length); I^]nqK  
} Vvo 7C!$z  
6u%&<")4HP  
private static class MaxHeap{ 4M T 7`sr  
|j|rS5  
void init(int[] data){ qP ,EBE  
this.queue=new int[data.length+1]; nt<]d\o0  
for(int i=0;i queue[++size]=data; PY'2h4IL  
fixUp(size); y7<|_:00  
} CJyevMf'  
} +[ZY:ZQ  
#9s,# }  
private int size=0; (k P9hcV  
xD7]C|8o  
private int[] queue; /{2,zW  
kxCSs7J/  
public int get() { a9Vi];  
return queue[1]; Y0> @vTUX  
} n"8Yv~v*2j  
EX"yxZ~  
public void remove() { ^rz_f{c]-  
SortUtil.swap(queue,1,size--); L},_.$I?  
fixDown(1); :'ptuY  
} CN ?gq^  
file://fixdown p4QU9DF  
private void fixDown(int k) { s#MPX3itK  
int j; YYS0`  
while ((j = k << 1) <= size) { O0:q;<>z  
if (j < size %26amp;%26amp; queue[j] j++; |BYRe1l6l  
if (queue[k]>queue[j]) file://不用交换 iRBfx  
break; GX%g9f!O  
SortUtil.swap(queue,j,k); )B*t :tN  
k = j; kf9X$d6   
} m[2gdJK  
} ig"L\ C"T  
private void fixUp(int k) { ^?|"L>y  
while (k > 1) { l"]V6!-U  
int j = k >> 1; 1Ws9WU  
if (queue[j]>queue[k]) H*6W q  
break; R-14=|7a-  
SortUtil.swap(queue,j,k); #;S*V"  
k = j; v^P O|Z  
} NlXimq  
} 1mJ Hued=6  
sRfcF`7  
} c",*h  
8EY:t zw  
} |a@L}m  
hGrdtsH?  
SortUtil: Zd&S@Z  
('~LMu_  
package org.rut.util.algorithm; @nf`Gw ;  
|uDdHX8T  
import org.rut.util.algorithm.support.BubbleSort; `u\n0=go  
import org.rut.util.algorithm.support.HeapSort; M%#e1"n  
import org.rut.util.algorithm.support.ImprovedMergeSort; P2Y^d#jO  
import org.rut.util.algorithm.support.ImprovedQuickSort; d5d@k  
import org.rut.util.algorithm.support.InsertSort; .C(tMF]D,  
import org.rut.util.algorithm.support.MergeSort; JI5Dy>u:  
import org.rut.util.algorithm.support.QuickSort; ^@]3R QB  
import org.rut.util.algorithm.support.SelectionSort; B<-Wea  
import org.rut.util.algorithm.support.ShellSort; (.,G=\!  
>3bCTE   
/** ,?3G;-  
* @author treeroot z{>Rc"%\  
* @since 2006-2-2 GthYzd:'hJ  
* @version 1.0 8>V5d Ebx'  
*/ Ts9uL5i  
public class SortUtil { I:.s_8mH}  
public final static int INSERT = 1; %znc##j)q  
public final static int BUBBLE = 2; v,t:+ !8  
public final static int SELECTION = 3; ] R*A  
public final static int SHELL = 4; ]f3>-)$*  
public final static int QUICK = 5; PW4q~rc=:  
public final static int IMPROVED_QUICK = 6; ntY]SK%Z  
public final static int MERGE = 7; SX*RP;vHy  
public final static int IMPROVED_MERGE = 8; gZ5 |UR<  
public final static int HEAP = 9; W9)&!&<o  
9FX-1,Jx  
public static void sort(int[] data) { H.0K?N&\?>  
sort(data, IMPROVED_QUICK); 4\i[m:e=@  
} f 1d?.)  
private static String[] name={ /O9EQPm(  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" KmF]\:sMD  
}; > P)w?:k  
r=4eP(w=  
private static Sort[] impl=new Sort[]{ @WB@]-+J T  
new InsertSort(), nP$9CA  
new BubbleSort(), ElXFeJ%[G  
new SelectionSort(), c%&>p||  
new ShellSort(), IK]d3owA  
new QuickSort(), qWw=8Bq  
new ImprovedQuickSort(), o(HbGHIP  
new MergeSort(), <QvOs@i*  
new ImprovedMergeSort(), Mfs?x a  
new HeapSort() N;gfbh]  
}; ;\]@K6m/Ap  
K%d&EYoW]  
public static String toString(int algorithm){ 0aAoV0fMDz  
return name[algorithm-1]; 2?x4vI np;  
} BuwY3F\-O  
Xeaj xcop#  
public static void sort(int[] data, int algorithm) { 4R*,VR.K  
impl[algorithm-1].sort(data); F\! `/4  
} {8aTV}Ha2  
B1STGL`nK  
public static interface Sort { ix$bRdl  
public void sort(int[] data); _j3fAr(V  
} M`>E|" <  
1"g<0 W  
public static void swap(int[] data, int i, int j) { g5yJfRLxp  
int temp = data; ]?*wbxU0  
data = data[j]; r3Ykz%6  
data[j] = temp; /o[w4d8  
} Q;u pau  
} HV.t6@\};  
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