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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。 V4:/LNq_]  
插入排序: 9 {&g.+  
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package org.rut.util.algorithm.support; P:"R;YCvE  
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import org.rut.util.algorithm.SortUtil; 7k( }U_v  
/** !6KX^j-  
* @author treeroot p~ b4TRvA6  
* @since 2006-2-2 %S`& R5  
* @version 1.0 tk&AZb,sP  
*/ 2R[v*i^S  
public class InsertSort implements SortUtil.Sort{ Q":_\inF  
R2,9%!iiX  
/* (non-Javadoc) V\cbIx(Z^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T/_u;My;  
*/ S&_03  
public void sort(int[] data) { {821e&r  
int temp; --K) 7  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); !l (Vk  
} T$5wH )<  
} L4>14D\  
} 2~kx3` Q  
^kKLi  
} )9YDNVo*-  
FDMQ Lxf  
冒泡排序: jHFjd'  
0D(8-H  
package org.rut.util.algorithm.support; Lce,]z\ _  
 g\q .  
import org.rut.util.algorithm.SortUtil; x MJ-=  
\@gV$+{9  
/** .xT?%xSi/  
* @author treeroot (a[BvJf  
* @since 2006-2-2 5pCicwea#  
* @version 1.0 <= 4$.2ym  
*/ uY]';Ot G  
public class BubbleSort implements SortUtil.Sort{ . g#}2:3  
4uXGp sL  
/* (non-Javadoc) K4Q{U@ZJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OrkcY39"~a  
*/ &FXf]9 _X  
public void sort(int[] data) { kTL{Q0q  
int temp; 3:,%># "  
for(int i=0;i for(int j=data.length-1;j>i;j--){ !>sA.L&=  
if(data[j] SortUtil.swap(data,j,j-1); X-\$<DiJGv  
} 9q`Ewj R  
} QVT0.GzR  
} G\sx'#Whc  
} w <r*&  
+(+lbCW/  
} xV> .]  
ht -'O"d:  
选择排序: REh"/d  
8W&1"h`  
package org.rut.util.algorithm.support; K *@?BE  
56Wh<i3  
import org.rut.util.algorithm.SortUtil; $u<;X^  
K)'[^V Xh  
/** n {?Du  
* @author treeroot V%R]jbHZ#  
* @since 2006-2-2 $DDO9  
* @version 1.0 8-;.Ejz!\A  
*/ ,RPb <3 B  
public class SelectionSort implements SortUtil.Sort { 7P$*qj~Vh  
? NoNg^Of  
/* .x=abA$!9  
* (non-Javadoc) &lzY"Y*hA0  
* [G_ ;78  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !X}+JeU '  
*/ MT{1/A;`)  
public void sort(int[] data) { *).  
int temp; 1I2n dt  
for (int i = 0; i < data.length; i++) { C6e5*S  
int lowIndex = i; hC$e8t60  
for (int j = data.length - 1; j > i; j--) { zZ[kU1Fyv  
if (data[j] < data[lowIndex]) { `{#""I^_  
lowIndex = j; AF:_&gF  
} 3o rSk  
} Hcf"u&%  
SortUtil.swap(data,i,lowIndex); z>!./z]p  
} s)\PY  
} 4-bM90&1t  
RPX.?;":  
} k)+{Y v*  
}hn?4ny  
Shell排序: /[/L%;a'p  
`Am|9LOT  
package org.rut.util.algorithm.support; t ]BG)]  
"smU5 s,P  
import org.rut.util.algorithm.SortUtil; L 0Ckw},,  
\4 b^*`d  
/** ~=yU%5 s@  
* @author treeroot }oD^tU IK  
* @since 2006-2-2 61_PSScSY  
* @version 1.0 Ja1`S+  
*/ U%F a.bL~  
public class ShellSort implements SortUtil.Sort{ 2z;nPup,  
pauO_'j_1p  
/* (non-Javadoc) ?<J~SF Tt  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |K. I%B  
*/ @Mya|zb  
public void sort(int[] data) { B}7j20:Z  
for(int i=data.length/2;i>2;i/=2){ Ifp8oL?S;  
for(int j=0;j insertSort(data,j,i); Lum=5zDo  
} 1!zd#TX  
} EwBrOq`C  
insertSort(data,0,1); F*G]Na@6D  
} :"y2u   
h7eb/xEto  
/** RSAGSGp  
* @param data +184|nJ<2  
* @param j /Igz[P^\9  
* @param i LTf)`SN %'  
*/ <mJ8~  
private void insertSort(int[] data, int start, int inc) { vAP1PQX;  
int temp; b|V <Kp  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); &am<_Tn*3  
} fx>QP?Z  
} 1TEKq#t;y  
}  }se3y  
|7 K>`  
} "uplk8iCJ  
?0 cv  
快速排序: ByE@4+9  
# ,H!<X;SS  
package org.rut.util.algorithm.support; ?yG[VW  
a,fcKe&B  
import org.rut.util.algorithm.SortUtil; `j3 OFC{7E  
|a) zuC  
/** # a4OtRiI  
* @author treeroot mdbi@ms@  
* @since 2006-2-2 BJ_"FG  
* @version 1.0 me@`;Q3  
*/ SP<(24zdd  
public class QuickSort implements SortUtil.Sort{ IPTFx )]G  
*|q{(KX  
/* (non-Javadoc) B3yTN6-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jc3Q3Th/zn  
*/ k"=*'  
public void sort(int[] data) { 2asRJ97qES  
quickSort(data,0,data.length-1); tW!*W?  
} $J<WFDn9  
private void quickSort(int[] data,int i,int j){ %$Fe[#1  
int pivotIndex=(i+j)/2; \>9^(N  
file://swap l_;6xkv4  
SortUtil.swap(data,pivotIndex,j); %INkuNa8\  
hKg +A  
int k=partition(data,i-1,j,data[j]); IPn!iv)  
SortUtil.swap(data,k,j); W2%@}IDm  
if((k-i)>1) quickSort(data,i,k-1); J3'q.Pc  
if((j-k)>1) quickSort(data,k+1,j); UFZOu%Y  
HP7~Zn)c  
} 0`V=x+*,  
/** 0i5S=L`j  
* @param data @8w[Zo~  
* @param i EhKG"Lb+  
* @param j #Mk3cp^Yl  
* @return E>/~:  
*/ 5MYdLAjV  
private int partition(int[] data, int l, int r,int pivot) { JPL`/WA 0  
do{ 1.N2!:&G|  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); >Q_ '[!S  
SortUtil.swap(data,l,r); 8*Fn02 p  
} '5Kj "aD%  
while(l SortUtil.swap(data,l,r); +2tFX  
return l; # bjK]+  
} l['p^-I  
M*cF'go  
} Oc,HnyV+  
OVxg9  
改进后的快速排序: 0$b4\.0>~  
UlNiH  
package org.rut.util.algorithm.support; <5Ll<0  
s1sn,?  
import org.rut.util.algorithm.SortUtil; 7}Mnv WP  
;xUo(^t7>  
/** g[O  
* @author treeroot 7K&Uu3m  
* @since 2006-2-2 @@-TW`G7  
* @version 1.0 ]ZP!y  
*/ MSBrI3MqQ  
public class ImprovedQuickSort implements SortUtil.Sort { #Muh|P]%\  
3(t3r::&  
private static int MAX_STACK_SIZE=4096; J"S(GL  
private static int THRESHOLD=10; wKpb%3  
/* (non-Javadoc) KiFTj$w,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) } 7:T? `V:  
*/ AEx VKy  
public void sort(int[] data) { 0Ntvd7"`}  
int[] stack=new int[MAX_STACK_SIZE]; l1`r%9gr  
^7i7yM}6(  
int top=-1; h {zb)'R  
int pivot; $;$vcV9*  
int pivotIndex,l,r; jAcKSx$}y"  
Tb;,t=;u  
stack[++top]=0; 1M_Vhs^  
stack[++top]=data.length-1; yJ ]Va $M  
x![.C,O  
while(top>0){ V )UtU L  
int j=stack[top--]; 3b#L*-  
int i=stack[top--]; ;ThFB  
4Z=`;  
pivotIndex=(i+j)/2; {98e_z w  
pivot=data[pivotIndex]; O0 Uh  
k' Fu&r  
SortUtil.swap(data,pivotIndex,j); bYpeI(zK  
^~vM*.j~j  
file://partition tux0}|[^'  
l=i-1; T%FW|jKw  
r=j; (C uM*-  
do{ XHdhSFpm  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Ahba1\,N$  
SortUtil.swap(data,l,r); Bxw(pACf  
} Y-st2r[,  
while(l SortUtil.swap(data,l,r); zkqn>  
SortUtil.swap(data,l,j); 4W49*Je  
~#P]NWW%.  
if((l-i)>THRESHOLD){ fI<d&5&g  
stack[++top]=i; ^A=tk!C  
stack[++top]=l-1; T>b"Gj/  
}  f}*:wj  
if((j-l)>THRESHOLD){ Ndb7>"W  
stack[++top]=l+1; '3sySsD&O  
stack[++top]=j; $%'3w~h`  
} 9;\mq'v%  
wD$UShnm9-  
} E8R;S}P A  
file://new InsertSort().sort(data); S-3hLw&?  
insertSort(data); RjgJIVm(  
} ":s_ O.  
/** WcM\4q@  
* @param data > KdV]!H  
*/ X's<+hK&  
private void insertSort(int[] data) { #pK" ^O*!  
int temp; u^JsKG+,:  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); YHu]\'Ff  
} goF87^M  
} n{etDO  
} q{B?j%.o  
n|rKo<Y0  
} f{[0;qDJ  
IFS_DW  
归并排序: R?9x!@BV  
hOj+z?  
package org.rut.util.algorithm.support; f^"pZS  
nu~]9~)I  
import org.rut.util.algorithm.SortUtil; $)8,dS  
aH @-"Wi  
/** 5U+4vV/*  
* @author treeroot O1t$]k:  
* @since 2006-2-2 kcg\f@d$  
* @version 1.0 `=,emP&(H&  
*/ M;OMsRCVO  
public class MergeSort implements SortUtil.Sort{ s/C'f4  
LGW_7&0<<  
/* (non-Javadoc) <m1v+cnqo  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -MTYtw(  
*/ K r|.I2?"  
public void sort(int[] data) { ^[Ka+E^Q  
int[] temp=new int[data.length];  O&|<2Qr  
mergeSort(data,temp,0,data.length-1); -<5{wQE;|  
} GQCdB>   
Z(Y:  
private void mergeSort(int[] data,int[] temp,int l,int r){ d(ypFd9z  
int mid=(l+r)/2; T{f$S  
if(l==r) return ; Qe ip h  
mergeSort(data,temp,l,mid); J,u-)9yBA<  
mergeSort(data,temp,mid+1,r); 2u!&Te(!9  
for(int i=l;i<=r;i++){ !d!u{1Y&  
temp=data; yzzJKucVU:  
} qnj'*]ysBC  
int i1=l; |rZMcl/  
int i2=mid+1; LfFXYX^  
for(int cur=l;cur<=r;cur++){ oo7}Hg>  
if(i1==mid+1) xY!ud)  
data[cur]=temp[i2++]; Nf3UVK8LtS  
else if(i2>r) s<k2vbhI  
data[cur]=temp[i1++]; vPz7*w  
else if(temp[i1] data[cur]=temp[i1++]; -rm[.  
else bGgpPV  
data[cur]=temp[i2++]; PRTjXq6)5  
} u Z-ZZE C  
}  <9yh:1"X  
GfEWms8z  
} m}=E$zPbO  
GbL1<P$V  
改进后的归并排序: 9jEH"`qqk  
L*A-&9.p3  
package org.rut.util.algorithm.support; 0*rD'?)K+  
b"N!#&O]  
import org.rut.util.algorithm.SortUtil; ]SRpMZ  
A0k?$ko  
/** ]- `wXi"  
* @author treeroot ^ W?cuJ8  
* @since 2006-2-2 q^EY?;Y  
* @version 1.0 DmLx"%H3  
*/ |3@DCb T  
public class ImprovedMergeSort implements SortUtil.Sort { 9_O4 yTL  
A!x&,<  
private static final int THRESHOLD = 10; a6e{bAuq  
bSX/)')jU  
/* m Jk\$/Kh  
* (non-Javadoc) ja';NIO-  
* B#SVN Lv  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (A6~mi r!  
*/ KbvMp1'9P  
public void sort(int[] data) { Z CPUNtOl  
int[] temp=new int[data.length]; SFDTHvXu#_  
mergeSort(data,temp,0,data.length-1); Q zaD\^OF  
} z"UC$  
!.$L=>:V  
private void mergeSort(int[] data, int[] temp, int l, int r) { /+SLq`'u)  
int i, j, k; rHX^bcYK  
int mid = (l + r) / 2; <L#d <lx  
if (l == r) }>u `8'2v  
return; +W*~=*h|  
if ((mid - l) >= THRESHOLD) y@!o&,,mq  
mergeSort(data, temp, l, mid); g)#{<#*2  
else qclc--fsE  
insertSort(data, l, mid - l + 1); }>0>OqvF  
if ((r - mid) > THRESHOLD) 6xJffl  
mergeSort(data, temp, mid + 1, r); \?^2}K/  
else Z}dK6h5+'  
insertSort(data, mid + 1, r - mid); vb6EO[e% I  
F1L[3D^-  
for (i = l; i <= mid; i++) { !!^z6jpvn  
temp = data; <d H@e  
} Q,xL8i M,  
for (j = 1; j <= r - mid; j++) { l_+@Xpl  
temp[r - j + 1] = data[j + mid]; d)Yl D]I  
} 3 J04 $cD  
int a = temp[l]; }:ZA)  
int b = temp[r]; 7 D#y  
for (i = l, j = r, k = l; k <= r; k++) { Zg(Y$ h\  
if (a < b) { v CaN[  
data[k] = temp[i++]; UGhEaKH~R  
a = temp; ][MtG  
} else { L#UR>Z#9  
data[k] = temp[j--]; +ZOiL[rS  
b = temp[j]; chE!,gik  
} hb5K"9Y  
} ;J5z  
} PWpt\g  
p1Zb&:+  
/** GYaP"3Lu  
* @param data V ;XKvH  
* @param l |0y#} |/  
* @param i U@mznf* J  
*/ RQx8Du<  
private void insertSort(int[] data, int start, int len) { L EgP-s W  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); FRrp@hE  
} yS\&2"o  
} \%=\4%:  
} :-k|jt  
} MCT1ZZpPr  
r<e%;S  
堆排序: RU:Rt'  
}p7iv:P=3  
package org.rut.util.algorithm.support; y~ =H`PAE  
ijF_ KP'  
import org.rut.util.algorithm.SortUtil; ssi7)0  
MePD:;mm^  
/** $>XeC}"x68  
* @author treeroot JF .Lo;  
* @since 2006-2-2 c0@8KW[,  
* @version 1.0 lS.Adl^k  
*/ c[dzO .~  
public class HeapSort implements SortUtil.Sort{ ;hX(/T  
vjGQ!xF  
/* (non-Javadoc) 0Z9DewwP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  Z.6dL  
*/ hi0HEm\  
public void sort(int[] data) { 8vY-bm,e  
MaxHeap h=new MaxHeap(); >d2Fa4u3  
h.init(data); 5~JT*Ny  
for(int i=0;i h.remove(); `Z?wj@H1`  
System.arraycopy(h.queue,1,data,0,data.length); ;<AcW.jx  
} EiW|+@1  
/fr>Fd  
private static class MaxHeap{ u]J@65~'b  
*x"80UXL  
void init(int[] data){ #.bW9j/  
this.queue=new int[data.length+1]; $"^K~5Q  
for(int i=0;i queue[++size]=data; 86r5!@WN  
fixUp(size); KQdIG9O+6  
} L_8zZ8 o  
} $7S"4rou  
k"(]V  
private int size=0; 0M_oFx  
x<NPp&GE  
private int[] queue; C9 n%!()>  
.V?:&_}_I6  
public int get() { W(s4R,j  
return queue[1]; |^pev2g  
} 9E!le=>  
Sjpx G@k  
public void remove() { kXMp()N8`  
SortUtil.swap(queue,1,size--); G'ykcB._  
fixDown(1); }rTH<! j  
} du3f'=q6|  
file://fixdown _IYaMo.n  
private void fixDown(int k) { %BqaVOKJ"f  
int j; k9^Hmhjw  
while ((j = k << 1) <= size) { IHl q27O  
if (j < size %26amp;%26amp; queue[j] j++; ^OR0Vp>L  
if (queue[k]>queue[j]) file://不用交换 N@q}eGe  
break; }SN( ^3N  
SortUtil.swap(queue,j,k); sHP -@  
k = j; J!6FlcsZm  
} RLB3 -=9t  
} *T|B'80  
private void fixUp(int k) { -4a9BE".  
while (k > 1) { #WpkL]g2+%  
int j = k >> 1; {meX2Z4  
if (queue[j]>queue[k]) K}V CFV  
break; j2Zp#E!  
SortUtil.swap(queue,j,k); $B+| &]a  
k = j; *eVq(R9?T  
} tli.g  
} )ZJvx%@i  
&SY!qTxF  
} l]nt@0+  
aV3:{oL  
} vJkc/7  
N%y i4  
SortUtil: XpQOl  
S&op|Z)1  
package org.rut.util.algorithm; U=on}W3V 2  
gV_/t+jI  
import org.rut.util.algorithm.support.BubbleSort; ^u /%zL  
import org.rut.util.algorithm.support.HeapSort; a^|DD#5  
import org.rut.util.algorithm.support.ImprovedMergeSort; dhl[=Y ` Q  
import org.rut.util.algorithm.support.ImprovedQuickSort; g*| j+<:7  
import org.rut.util.algorithm.support.InsertSort; %\As  
import org.rut.util.algorithm.support.MergeSort; \{,TpK.  
import org.rut.util.algorithm.support.QuickSort; W .7rHa  
import org.rut.util.algorithm.support.SelectionSort; {|+Y;V`  
import org.rut.util.algorithm.support.ShellSort; (L_-!=e  
!d* [QD8  
/** IP~!E_e}\  
* @author treeroot ^4y]7 p  
* @since 2006-2-2 ;SR ESW  
* @version 1.0 PxHFH pL  
*/ THA9OXP  
public class SortUtil { ]Z JoC!u  
public final static int INSERT = 1; DHidI\*gT  
public final static int BUBBLE = 2; (JhX:1  
public final static int SELECTION = 3; &K)8  
public final static int SHELL = 4; weitDr6  
public final static int QUICK = 5; wucdXj{%  
public final static int IMPROVED_QUICK = 6; l.[pnLD  
public final static int MERGE = 7; CI|lJ  
public final static int IMPROVED_MERGE = 8; |m19fg3u  
public final static int HEAP = 9; PJnC  
B[vj X"yg  
public static void sort(int[] data) { da{]B5p\  
sort(data, IMPROVED_QUICK); h$>F}n j  
} ! ,J# r  
private static String[] name={ 73WSW/^F  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" H#- 3  
}; I-7LT?r  
.b :!qUE^  
private static Sort[] impl=new Sort[]{ $ |4C]Me (  
new InsertSort(), l?Y^3x}j  
new BubbleSort(), `sxfj)s  
new SelectionSort(), uFd$*`jS  
new ShellSort(), q^@*{H  
new QuickSort(), yoi4w 7:  
new ImprovedQuickSort(), Z5{a7U4z_  
new MergeSort(), &dtk&P{  
new ImprovedMergeSort(), <G"cgN#]  
new HeapSort() bRC243]g*A  
}; #%"q0"  
4 p_C+4  
public static String toString(int algorithm){ &[.5@sv  
return name[algorithm-1]; ."K>h3(&V  
} K,f:X g!:  
qZoDeN-CC  
public static void sort(int[] data, int algorithm) { UNI< r  
impl[algorithm-1].sort(data); I Mgd2qIC  
}  idmU.`  
QbU5FPiN  
public static interface Sort { B( [x8A]  
public void sort(int[] data); eh# 37*-  
} yIw}n67  
^}3^|jF  
public static void swap(int[] data, int i, int j) { <QtZ6-;_f  
int temp = data; fF:57*ys  
data = data[j]; -F[8 ZiZ  
data[j] = temp; ^s,3*cAU  
} yr]ja-Y  
} \}-4(Xdaq  
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