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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。 C:H9C  
插入排序: B` n!IgF8  
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package org.rut.util.algorithm.support; UoBu0Rx  
F|Ou5WD  
import org.rut.util.algorithm.SortUtil; p>!`JU`{?  
/** ;Qw>&24h[  
* @author treeroot F_@PSA+  
* @since 2006-2-2 *)"`v]  
* @version 1.0 qex.}[  
*/ I]zCsT.  
public class InsertSort implements SortUtil.Sort{ ) |*HkdF`  
( vgoG5  
/* (non-Javadoc) ;ML21OjgN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .( 75.^b2)  
*/ =)'AXtvE  
public void sort(int[] data) { rq+E"Uj?  
int temp; tEZ@v(D  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); A5 /Q:8b  
} X}_kLfP/9  
} &;*jMu6  
} &i6WVNGy  
k;q|pQ[  
} Xul<,U~w6  
zQ5'q  
冒泡排序: U Tw\_s  
~6E `6;`  
package org.rut.util.algorithm.support; ~-|K5  
BgUf:PT  
import org.rut.util.algorithm.SortUtil; L`3 g5)V  
Gi?"  
/** h=?#D0  
* @author treeroot eSJ5YeY)  
* @since 2006-2-2 ^ WidA-  
* @version 1.0 0~)cAKus  
*/ D1#fy=u69|  
public class BubbleSort implements SortUtil.Sort{ qMKXS,s  
Bv@NE2  
/* (non-Javadoc) ..;}EFw5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^~( @QfY  
*/ O~trv,?)  
public void sort(int[] data) { Uz[#t1*  
int temp; ?%#3p[  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 6 [w_ /X"  
if(data[j] SortUtil.swap(data,j,j-1); D O#4E<]5  
} I6X_DPY  
} %^kBcId  
} |3QKxS0  
} ):kDWc  
o[&*vc)  
} 4f'1g1@$  
p^MV< }kk  
选择排序: 8<{)|GoqB  
]u G9WT6l  
package org.rut.util.algorithm.support; L;wzvz\+  
Jvgx+{Xu  
import org.rut.util.algorithm.SortUtil; Q6]SsV?x  
Fzt{^%\`  
/** p0>W}+8fF  
* @author treeroot *FmY4w  
* @since 2006-2-2 A )tGB&  
* @version 1.0 1 cvoI  
*/ 'QeCJ5p]  
public class SelectionSort implements SortUtil.Sort { ,l1A]Wx  
9jBP|I{xI  
/* !.Eua3:V*  
* (non-Javadoc) 4'P otv@/  
* h3[^uY e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f#FAi3  
*/ bXmX@A$#Io  
public void sort(int[] data) { a=]tqV_  
int temp; g\ilK:r}  
for (int i = 0; i < data.length; i++) { k><k|P[|  
int lowIndex = i; MZZEqsD5[  
for (int j = data.length - 1; j > i; j--) { l`>|XUf6  
if (data[j] < data[lowIndex]) { (_Ph{IN  
lowIndex = j; !?#B*JGFS  
} I($0&Y\De  
} 0go{gUI  
SortUtil.swap(data,i,lowIndex); Y HSdaocp  
} FhpS#, Y$  
} 1P;J%.{  
KP,#x$Bg  
} 1Tm,#o  
1wAD_PI|BH  
Shell排序: bvzNur_  
mmRxs1 0$  
package org.rut.util.algorithm.support; ;&RBg+Pr  
%{Ib  
import org.rut.util.algorithm.SortUtil; "MM)AY*b  
_c$l@8KS^  
/** 3)cH\gsg9  
* @author treeroot AAuH}W>n  
* @since 2006-2-2 0wQ'~8  
* @version 1.0 X\sOeb:]  
*/ YS],o'T  
public class ShellSort implements SortUtil.Sort{ VC~1QPC9  
}w&W\g+E$  
/* (non-Javadoc) Fab gJu  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {8p<iY- %  
*/ @$mh0K>  
public void sort(int[] data) { r9sq3z|%  
for(int i=data.length/2;i>2;i/=2){ N)CM^$(T|  
for(int j=0;j insertSort(data,j,i); {8]Yqx)1]]  
} 'vCl@x$  
} 5NGQWg  
insertSort(data,0,1); X/Sp!W-H  
} [L(qrAQ2|z  
^`iqa-1  
/** ^jh c(ZW"  
* @param data c6-~PKJL  
* @param j 9 n0 ?0mk  
* @param i ? $$Xg3w_#  
*/ `s8*n(\h  
private void insertSort(int[] data, int start, int inc) { K4U_sCh#f  
int temp;  KEPNe(H  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); *3@ =XY7  
} [Z]%jABR  
} '< =77yDg  
} )>"|<h.2]  
tW-wO[2  
} " l;=jk]  
7! sR%h5p  
快速排序: QzLE9   
| -l9Z  
package org.rut.util.algorithm.support; #|j8vmfn$e  
a=_:`S]}  
import org.rut.util.algorithm.SortUtil; CWdpF>En  
#M ;j*IBl*  
/** >bRoQ8  
* @author treeroot `_"loPu  
* @since 2006-2-2 WQiIS0BJ *  
* @version 1.0 *(g0{V  
*/ [b:0j-  
public class QuickSort implements SortUtil.Sort{ 3QhQpPk) ,  
k^@dDLr"  
/* (non-Javadoc) #IvHxSo&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3-Bz5sj9  
*/ 0?,<7}"<X  
public void sort(int[] data) { >q&X#E<w  
quickSort(data,0,data.length-1); D]=V6l=  
} b9R0"w!ml  
private void quickSort(int[] data,int i,int j){ PRal>s&f  
int pivotIndex=(i+j)/2; j82x$I*  
file://swap `a6AES'w$  
SortUtil.swap(data,pivotIndex,j); R :*1Y\o(  
g|Tkl  
int k=partition(data,i-1,j,data[j]); y0]"qB  
SortUtil.swap(data,k,j); \ gO!6  
if((k-i)>1) quickSort(data,i,k-1); O>y*u8  
if((j-k)>1) quickSort(data,k+1,j); 2`^M OGYk  
 MFyi#nq  
} V7<w9MM  
/** fnJx$PD~  
* @param data .k -!/^  
* @param i VX:Kq<XwQ  
* @param j #;0F-pt  
* @return z!G?T(SpA  
*/ l@:&0id4I  
private int partition(int[] data, int l, int r,int pivot) { j4wsDtmAU  
do{ " M3S  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); dv cLZK  
SortUtil.swap(data,l,r); \MDhm,H<  
} K%.t%)A_3  
while(l SortUtil.swap(data,l,r); 9 lXnNK |]  
return l; qTz5P  
} SFjRSMi  
f"-3'kqo  
} GJ\bZ"vDo  
*+TO%{4  
改进后的快速排序: h$]nfHi_Q  
14`S9SL{V  
package org.rut.util.algorithm.support; eRm*+l|?  
/H*[~b   
import org.rut.util.algorithm.SortUtil; LFAefl\  
G%fXHAs.+  
/** g;~$xXn  
* @author treeroot .U#oN_D  
* @since 2006-2-2 P>EG;u@.  
* @version 1.0 cwE?+vB  
*/ [(; .D  
public class ImprovedQuickSort implements SortUtil.Sort { ]E|E4K6g  
gI/ SA  
private static int MAX_STACK_SIZE=4096; gb=tc`  
private static int THRESHOLD=10; q{}U5(,{0  
/* (non-Javadoc) ?aQVaw&L!7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rRX F@  
*/ YF(bl1>YC  
public void sort(int[] data) { ky{@*fg.  
int[] stack=new int[MAX_STACK_SIZE]; Et'&}NjI  
p^C$(}Yh  
int top=-1; 7O~hA*Z  
int pivot; .[ s6x5M  
int pivotIndex,l,r;  z $iI  
bo#?,80L}`  
stack[++top]=0; TU1W!=Z  
stack[++top]=data.length-1; 734H{,~  
~H4Tr[8a  
while(top>0){ Q sPZ dC  
int j=stack[top--]; -sx=1+\nf  
int i=stack[top--]; .7HEI;4  
WM0-F@_  
pivotIndex=(i+j)/2; D1V^DbUm_  
pivot=data[pivotIndex]; ;ykX]5jGh  
bSW~hyI w  
SortUtil.swap(data,pivotIndex,j); 8w ]'U  
2]5ux!Lqln  
file://partition |ADg#oX  
l=i-1; Z*Fn2I4  
r=j; _=K\E0I.m  
do{ u yoV)  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ;?{OX  
SortUtil.swap(data,l,r); ?'si ^N  
} _z@_.%P\  
while(l SortUtil.swap(data,l,r); m'eM&1Ba  
SortUtil.swap(data,l,j); , _bG'Hmt  
gMPvzBpP  
if((l-i)>THRESHOLD){ #<5i/5&  
stack[++top]=i; i'`>YX  
stack[++top]=l-1; r@CbhD  
} qhmA)AWG>  
if((j-l)>THRESHOLD){ ${tBu#$-d  
stack[++top]=l+1; 'DUY f5nF  
stack[++top]=j; +hIMfhF  
} hdpA& OteR  
\/!jGy*  
} _o-01gu.  
file://new InsertSort().sort(data); bLC+73BjC  
insertSort(data); SpM Hq_MLM  
} xgIb4Y%  
/** yW;]J8 7*  
* @param data lrmz'M'  
*/ v{) *P.E  
private void insertSort(int[] data) { <%"CQT6g %  
int temp; 8Ib5  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Sr-!-eC  
} T9AFL;1  
} [a k[ZXC,  
} Qv@)WJ="-0  
i+|/V&#3[  
} H6Kt^s<6xu  
Cp]q>lM"  
归并排序: G C@U['  
K>Tv M&  
package org.rut.util.algorithm.support; w_#5Na}>d  
?V})2wwP  
import org.rut.util.algorithm.SortUtil; m$bNQ7  
%`j2?rn  
/** N lB%Qu  
* @author treeroot b|U3\Fmc  
* @since 2006-2-2 b(_PV#@$  
* @version 1.0 5xc-MkIRL  
*/ `IK3e9QpcA  
public class MergeSort implements SortUtil.Sort{ R-5e9vyS  
/&RS+By(i  
/* (non-Javadoc) 9]|G-cyt  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^oZD44$  
*/ KCfcEz  
public void sort(int[] data) { E>rWm_G  
int[] temp=new int[data.length]; gX]'RBTb  
mergeSort(data,temp,0,data.length-1); Lu~M=Fh  
} SA.,Q~_T7  
G=>LW1E|  
private void mergeSort(int[] data,int[] temp,int l,int r){ h|.*V$3  
int mid=(l+r)/2; =mh)b]].4\  
if(l==r) return ; 6}q# c  
mergeSort(data,temp,l,mid); $1myf Z  
mergeSort(data,temp,mid+1,r); ^qPS&G  
for(int i=l;i<=r;i++){ bdr !|WZ  
temp=data; #zKF/H|_R  
} -;U3$[T,J7  
int i1=l; yQ+C}8r5  
int i2=mid+1; lR3JyYY{X  
for(int cur=l;cur<=r;cur++){ J,^eq@(  
if(i1==mid+1) 6n'XRfQp)&  
data[cur]=temp[i2++]; vLh,dzuo  
else if(i2>r) /N`E4bKBR  
data[cur]=temp[i1++]; k&3'[&$I*,  
else if(temp[i1] data[cur]=temp[i1++]; 'q{|p+  
else |I=\+P}s  
data[cur]=temp[i2++]; )-d &XN7  
} B#(2,j7M  
} e[J0+ x#;r  
8}Su7v1  
} ZTP&*+d  
8(0q,7)y  
改进后的归并排序: G1:2MPH  
2bt2h.a  
package org.rut.util.algorithm.support; ;Z}V}B  
GA@Zfcg  
import org.rut.util.algorithm.SortUtil; O$ ;:5zT  
xZ(VvINL'  
/** 6IC/~Woghx  
* @author treeroot /(skIvE|  
* @since 2006-2-2 !_=3Dz  
* @version 1.0 ]0)=0pc]E  
*/ (Y?" L_pC  
public class ImprovedMergeSort implements SortUtil.Sort { [<7Vv_\Q  
dtUt2r)6L;  
private static final int THRESHOLD = 10; B$%7U><'  
6"U)d7^  
/* |DMa2}%  
* (non-Javadoc) w(vda0  
* K~aI Y0=<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t /CE,DQ  
*/ cdfvc0  
public void sort(int[] data) { & l NHNu[  
int[] temp=new int[data.length]; IBr|A  
mergeSort(data,temp,0,data.length-1); 4).>b3OhX  
} ~F9WR5}]  
_rf  
private void mergeSort(int[] data, int[] temp, int l, int r) { p;m2RHYF  
int i, j, k; 7ezf.[{R  
int mid = (l + r) / 2; l/w<R  
if (l == r) kKR Z79"7s  
return; _<1uO=km6  
if ((mid - l) >= THRESHOLD) o]|a5. O  
mergeSort(data, temp, l, mid); ^gD%#3>X  
else 5KFd/9  
insertSort(data, l, mid - l + 1); =e$6o2!'}  
if ((r - mid) > THRESHOLD) eb>YvC  
mergeSort(data, temp, mid + 1, r); e(m#elX  
else = A;B-_c  
insertSort(data, mid + 1, r - mid); ghd*EXrF H  
1f^4J~{  
for (i = l; i <= mid; i++) { C) "|sG  
temp = data; *R^ulp[W  
} h_Cac@F0  
for (j = 1; j <= r - mid; j++) { -(fvb  
temp[r - j + 1] = data[j + mid]; '@<aS?@!t  
} pu +"bq  
int a = temp[l]; aPMqJ#fIr  
int b = temp[r]; aD:vNX  
for (i = l, j = r, k = l; k <= r; k++) { KW.QVBuVO#  
if (a < b) { +]%d'h  
data[k] = temp[i++]; 30v 3C7o=  
a = temp; uZ(j"y  
} else { vQpR0IEf]e  
data[k] = temp[j--]; idr,s\$>  
b = temp[j]; `Vqp o/  
} Q}MS $[y  
} Ll !J!{  
} F! ;0eS"xp  
A+lP]Oy0S  
/** Qpc+1{BQ  
* @param data &S"o jbb  
* @param l /U#{6zeM[,  
* @param i JS<4%@  
*/ d= -/'_'  
private void insertSort(int[] data, int start, int len) { $6X CHVx  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); {D jz']  
} d M&BnI  
} '<C I^5^  
} |NcfR"[c  
} Y(4#b`k3  
D{aN_0mT  
堆排序: Ex ?)FL$4  
,afh]#  
package org.rut.util.algorithm.support; IZ;%lV7t  
rI5)w_E?  
import org.rut.util.algorithm.SortUtil; 1YA_`_@w  
/?jAG3"  
/** 4 }l,F  
* @author treeroot r2T-=XWB  
* @since 2006-2-2 / W}Za&]  
* @version 1.0 }7Si2S  
*/ 1X4v:rI  
public class HeapSort implements SortUtil.Sort{ #qk A*WP  
#`C ;@#xr  
/* (non-Javadoc) Z%Nl<i  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L!7*U.+  
*/ qF{u+Ms  
public void sort(int[] data) { 8}0W_CU,  
MaxHeap h=new MaxHeap(); ! Q`GA<ikv  
h.init(data); J>P{8Aw  
for(int i=0;i h.remove(); #L{QnV.3  
System.arraycopy(h.queue,1,data,0,data.length); OgNt"Vg  
} >Rw[x  
f!~gfnn  
private static class MaxHeap{ =>Vo|LBoe  
)POuH*j  
void init(int[] data){ r[zxb0YA  
this.queue=new int[data.length+1]; &WIiw$@  
for(int i=0;i queue[++size]=data; )~<8j  
fixUp(size); .,pGW8Js  
} > ln%3 =  
} 9d4PH  
dlC)&Ai  
private int size=0; zLlu% Oc  
M?4)U"_VE  
private int[] queue; Vc3tKuMsiX  
kL,{H~iq;  
public int get() { Memz>uux  
return queue[1]; H'E >QT  
} AlNiqnZ  
_yyQ^M/  
public void remove() { Gw*n,*pz  
SortUtil.swap(queue,1,size--); :0.Z/s -  
fixDown(1); adh=Kp e!w  
} /a\6&Eb  
file://fixdown yAoJ?<4^W  
private void fixDown(int k) { :luVsQ  
int j; h5&l#>8&  
while ((j = k << 1) <= size) { AHP_B&s,Qe  
if (j < size %26amp;%26amp; queue[j] j++; ?5nF` [rx  
if (queue[k]>queue[j]) file://不用交换 e%&2tf4  
break; }u&.n pc  
SortUtil.swap(queue,j,k); ewqfs/  
k = j; ^0 R.U+?+  
} <8[BB7  
} BhkJ >4#  
private void fixUp(int k) { .N8AkQ(Ok  
while (k > 1) { <jT6|2'  
int j = k >> 1; K*Zf^g m  
if (queue[j]>queue[k]) #CoJ S[t  
break; %^m6Q!  
SortUtil.swap(queue,j,k); &dZ-}. af  
k = j; :04sB]H  
} "P=OpFV  
} + ?n81|7`  
1vBR\!d?7  
} eOjoxnD-$  
 R:98'`X=  
} D[m;rcl  
Ns2M8  
SortUtil: >&tPIrz  
&'4id[$9  
package org.rut.util.algorithm; _niXl&C  
-:`$8/A|  
import org.rut.util.algorithm.support.BubbleSort; o&1ewE(O]  
import org.rut.util.algorithm.support.HeapSort; '$W@I  
import org.rut.util.algorithm.support.ImprovedMergeSort; s)#FqB8  
import org.rut.util.algorithm.support.ImprovedQuickSort; &IM;Yl  
import org.rut.util.algorithm.support.InsertSort; (Bd8@}\u_  
import org.rut.util.algorithm.support.MergeSort; NH$a:>  
import org.rut.util.algorithm.support.QuickSort; SsfnBCVR  
import org.rut.util.algorithm.support.SelectionSort; tK6z#)  
import org.rut.util.algorithm.support.ShellSort; d6-a\]gF  
ahA21W` k  
/** Zf |%t  
* @author treeroot kt.z,<w5O  
* @since 2006-2-2 W~+ ] 7<  
* @version 1.0 1q<BYc+z  
*/ LY[XPV]t  
public class SortUtil { 40N8?kQ}?  
public final static int INSERT = 1; 5BCXI8Ox9x  
public final static int BUBBLE = 2; 7y:%^sl  
public final static int SELECTION = 3; [f}YXQ0N)  
public final static int SHELL = 4; mOr>*uR  
public final static int QUICK = 5; Cfu]umZLn  
public final static int IMPROVED_QUICK = 6; tgH@|Kg  
public final static int MERGE = 7; [s$vY~_  
public final static int IMPROVED_MERGE = 8; q' 77BRD3  
public final static int HEAP = 9; O^48c$Apv  
x):cirwkl  
public static void sort(int[] data) { ~;k-/Z"  
sort(data, IMPROVED_QUICK); 7udMF3;>  
} Vm6G5QwM  
private static String[] name={ H#x=eDU|k  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" \Q<c Y<  
}; 7OX5"u!2  
PI(;t9]b  
private static Sort[] impl=new Sort[]{ e.jrX;;$!&  
new InsertSort(), X[:Hp`_$  
new BubbleSort(), .w\AyXp  
new SelectionSort(), e5_a.c  
new ShellSort(), U7O~ch[,  
new QuickSort(), Bs(\e^}  
new ImprovedQuickSort(), m!5P5U x  
new MergeSort(), 5v"QKI  
new ImprovedMergeSort(), YU.aZdA&V3  
new HeapSort() s~$ZTzV  
}; f/RzE  
5mUHk]W  
public static String toString(int algorithm){ f4)fa yAVp  
return name[algorithm-1]; 1X2MhV  
} Tz3 L#0:j  
9 o6ig>C  
public static void sort(int[] data, int algorithm) { 9F)+p7VJq  
impl[algorithm-1].sort(data); n#Xi Co_\  
} &{NN!X  
g-"@%ps  
public static interface Sort { x zu)``?  
public void sort(int[] data); VV O C-:  
} 2{Nv&ZX?  
% 1ZJi}~  
public static void swap(int[] data, int i, int j) { yEyx.Mh.Af  
int temp = data; 4;'o`K~*  
data = data[j]; Aq%TZ_m  
data[j] = temp; __M(dN(^  
} +<7~yZ[Z8  
}  u)PB@  
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