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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。 b.;W|$.  
插入排序: #v-!GK_<  
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package org.rut.util.algorithm.support; .bGeZwvf:G  
(Q+3aEUE  
import org.rut.util.algorithm.SortUtil; 9h{G1XL  
/** _JH6bvbQ  
* @author treeroot }0G Ab2  
* @since 2006-2-2 _?ZT[t<  
* @version 1.0 e+[J9;g  
*/ 7Go!W(8  
public class InsertSort implements SortUtil.Sort{ =F4}  
1F|+4  
/* (non-Javadoc) UsTPNQj  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /rW{rf^  
*/ 9D,& )6  
public void sort(int[] data) { Up&q#vqIj  
int temp; /v[- KjTj7  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); :w+Rs+R  
} _c2#  
} x3Uv&  
} :-)[B^0  
EIRf6jL  
} V_* ^2c)  
OBZj-`fqJ  
冒泡排序: X#yl8k_  
@!$NUY8,A#  
package org.rut.util.algorithm.support; rxARJ so  
2wd(0K}b  
import org.rut.util.algorithm.SortUtil; 0CROq}  
; F=_ozWV*  
/** @4i D N  
* @author treeroot i ?>"}h  
* @since 2006-2-2 ?HY0@XILI  
* @version 1.0 dQ[lXV[}v  
*/ *u }):8=&R  
public class BubbleSort implements SortUtil.Sort{ ^4"_I   
mI# BQE`p6  
/* (non-Javadoc) EB#z\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yl}Hr*  
*/ 7@FB^[H:y  
public void sort(int[] data) { Ogb_WO;)  
int temp; ( nh!tC  
for(int i=0;i for(int j=data.length-1;j>i;j--){ A SSoKrFL  
if(data[j] SortUtil.swap(data,j,j-1); C N"c  
} G\Me%{b#  
} S%@$J~\rx  
} IQDWH/ c  
} |Xag:hof  
Ut+mm\7  
} bA)Xjq)Rr  
I9 E@2[=!  
选择排序: 0`W~2ai  
OjN]mp-q  
package org.rut.util.algorithm.support; !4E:IM63  
<7GK *I  
import org.rut.util.algorithm.SortUtil; f As:[  
gJ])A7O  
/** MPt7 /  
* @author treeroot p,Z6/e[SI  
* @since 2006-2-2 bY>Ug{O;  
* @version 1.0 S;])Nt'X'  
*/ !o@-kl  
public class SelectionSort implements SortUtil.Sort { t]x HM  
UZ1 lI>  
/* Z9U*SS5s,  
* (non-Javadoc) h@J`:KO  
* )d(cXN-T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (]1 %s?ud*  
*/ Ur`v*LT}~  
public void sort(int[] data) { =9c24j  
int temp; (:\hor%  
for (int i = 0; i < data.length; i++) { 6-3l6q  
int lowIndex = i; \; 3r  
for (int j = data.length - 1; j > i; j--) { c|7Pnx%gT  
if (data[j] < data[lowIndex]) { BWs\'B  
lowIndex = j; qb_V ,b9  
} d>%_<pw  
} vl#/8]0!  
SortUtil.swap(data,i,lowIndex); %VMazlM15  
} rdb%/@.-  
} |3i~?] A  
R9W(MLe58  
} 7@sWT<P  
DbcKKgPn(9  
Shell排序: qSQjAo4t@  
.JiQq]  
package org.rut.util.algorithm.support; O/k4W#  
! >:O3*/  
import org.rut.util.algorithm.SortUtil; ~_raI7,  
/eI38>v  
/** eN$~@'w  
* @author treeroot WFkXz*7B  
* @since 2006-2-2 =y':VIVJC  
* @version 1.0 68y.yX[  
*/ eE&F1|8  
public class ShellSort implements SortUtil.Sort{ {?C7BClB  
&(0iSS  
/* (non-Javadoc) `<K#bDU;a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;02lmpBj  
*/ DgdW.Kj|IL  
public void sort(int[] data) { Kz%wMyZ:g  
for(int i=data.length/2;i>2;i/=2){ F kWJB>  
for(int j=0;j insertSort(data,j,i); u7/M>YJ`T  
} {[$p}#7Y  
} !B\\:k]aO^  
insertSort(data,0,1); EU+sTe>  
} dI>oHMC  
k @ Hu0x  
/** .VUZ4e  
* @param data #C+0m`  
* @param j %pMW5]H  
* @param i $]Q_x?  
*/ zYep V  
private void insertSort(int[] data, int start, int inc) { TqlUe@E  
int temp; +@!9&5S A  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); X)yTx8v4  
} lu>>~vy6  
} ]\jhtC=2  
} J@Li*Ypo  
7DI8r|~  
}  E5o0^^  
P`"dj@1'  
快速排序: _ pJU~8  
qYpHH!!C=  
package org.rut.util.algorithm.support; C }!$'C|  
ZK13[_@9  
import org.rut.util.algorithm.SortUtil; Z?GC+hG`  
 hP7nt  
/** <q!{<(:  
* @author treeroot `Q{kiy  
* @since 2006-2-2 7mu%|!  
* @version 1.0 {_ #   
*/ N+r~\[N\9  
public class QuickSort implements SortUtil.Sort{ 9oaq%Sf  
P$!Ht  
/* (non-Javadoc) Tv(s?T6f  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @p!["v&  
*/ }x%"Oq|2]x  
public void sort(int[] data) { r2Q"NVw  
quickSort(data,0,data.length-1); -<|E bh d3  
} eQ*gnV}rE%  
private void quickSort(int[] data,int i,int j){ /aK },+  
int pivotIndex=(i+j)/2; 7Fq|Zc`P  
file://swap i}q6^;uTF  
SortUtil.swap(data,pivotIndex,j); _gc2h@x1O  
] 03!K E  
int k=partition(data,i-1,j,data[j]); >_5D`^  
SortUtil.swap(data,k,j); _ p?q/-[4  
if((k-i)>1) quickSort(data,i,k-1); { }>"f]3  
if((j-k)>1) quickSort(data,k+1,j); rp _G.C  
X=DJOepH'  
} L\b$1U!i  
/** UP,(zKTA  
* @param data 7ed*dXY*  
* @param i }$b/g  
* @param j 'dx4L }d  
* @return H\O|Y@uVr  
*/ au GN~"n^  
private int partition(int[] data, int l, int r,int pivot) { !1!uB }  
do{ VB[R!S=  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); *{C)o0D  
SortUtil.swap(data,l,r); Q,s,EooIx  
} <H$CCo  
while(l SortUtil.swap(data,l,r); ']qC,;2  
return l; 2)U3/TNe  
} jL 2f74?1  
A?_2@6Y^  
} ~>C!l k  
cW MZw|t  
改进后的快速排序: )>=`[$D1t  
hwexv 9""  
package org.rut.util.algorithm.support; ^tpy8TQ  
[7$<sN<'  
import org.rut.util.algorithm.SortUtil;  s cn!,  
^6Xio6W  
/** `RjcJ?r  
* @author treeroot H-I*;  
* @since 2006-2-2 N'^ 0:zK:  
* @version 1.0 [V1gj9t=,  
*/ YrB-;R 1+  
public class ImprovedQuickSort implements SortUtil.Sort { >(\[$  
ZkqC1u3  
private static int MAX_STACK_SIZE=4096; ka]n+"~==\  
private static int THRESHOLD=10; 0w OgQ n  
/* (non-Javadoc) dso\+s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zO!`sPP  
*/ A]R"C:o  
public void sort(int[] data) { BL]^+KnP  
int[] stack=new int[MAX_STACK_SIZE]; #'"h+[XY  
|Q7Ch]G  
int top=-1; (s}9N   
int pivot;  *A_  
int pivotIndex,l,r; A@`C<O ^  
@GGyiK@  
stack[++top]=0; ~r!jVK>^  
stack[++top]=data.length-1; $-o39A#  
G"J6X e  
while(top>0){ I2zSoQ1P  
int j=stack[top--]; :CH'Bt4<  
int i=stack[top--]; {Q4=GrS  
J,IOp-  
pivotIndex=(i+j)/2; ^up*KQ3u\  
pivot=data[pivotIndex]; N["(ZSS   
^\x PF5  
SortUtil.swap(data,pivotIndex,j); C8(sH@  
V @8X .R>  
file://partition lMP|$C  
l=i-1; \f._I+gJ  
r=j; iPHMyxT+S  
do{ J_`.w  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); EQ7cK63  
SortUtil.swap(data,l,r); 4,)=r3;&!  
} 654PW9{(  
while(l SortUtil.swap(data,l,r); Z3[,Xw  
SortUtil.swap(data,l,j); D@\97t+  
o6{XT.z5qx  
if((l-i)>THRESHOLD){ c5Offnq'1  
stack[++top]=i; {\ .2h  
stack[++top]=l-1; 2b!b-  
} ZW,PZ<  
if((j-l)>THRESHOLD){ z?V> ST  
stack[++top]=l+1; )L_jR%2j  
stack[++top]=j; Rov0  
} +!w?g/dV  
#Xsby  
} dU+1@_  
file://new InsertSort().sort(data); ,(lD5iN  
insertSort(data); Q}I. UG_  
} ;M}bQ88  
/** 2Q<_l*kk(  
* @param data /x`H6'3?  
*/ `L:wx5?  
private void insertSort(int[] data) { f!1K GP  
int temp; S$V'_  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); a3p|>M6E  
} `.><$F  
} k ^+h>B-;  
} .]8 Jeb  
5*ABw6'6  
} P^&+ehp  
)Q9J,  
归并排序: D b(a;o   
8whjPn0  
package org.rut.util.algorithm.support; 7_A(1Lx/l7  
t6LTGWs/_o  
import org.rut.util.algorithm.SortUtil; v3`J~,V<  
"zm.jNn  
/** .llAiv  
* @author treeroot s;$ eq);  
* @since 2006-2-2 !a1jc_  
* @version 1.0 ]%NCKOM  
*/ $z` jR*  
public class MergeSort implements SortUtil.Sort{ t+66kBN  
JlG yGr^MD  
/* (non-Javadoc) egKYlfe"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pQW^lqwZ:6  
*/ hu6)GOZbv  
public void sort(int[] data) { |[xi"E\  
int[] temp=new int[data.length]; _Z9I')  
mergeSort(data,temp,0,data.length-1); 8f#YUK sW=  
} EMJ}tvL0Tp  
nEs l  
private void mergeSort(int[] data,int[] temp,int l,int r){ Vd|/]Zj  
int mid=(l+r)/2; SkN^ytKE  
if(l==r) return ; E6BW&Xp  
mergeSort(data,temp,l,mid); vUj7rDT|  
mergeSort(data,temp,mid+1,r); 'O2{0  
for(int i=l;i<=r;i++){ ];oED?I  
temp=data; w/Ia` Tx$  
} <sd Qvlx$-  
int i1=l; XMuZ 'I  
int i2=mid+1; im*XS@Uj  
for(int cur=l;cur<=r;cur++){ 9/^4W.  
if(i1==mid+1) Ip?Ueaei  
data[cur]=temp[i2++]; <o p !dS  
else if(i2>r) o1YhYA  
data[cur]=temp[i1++]; E-n!3RQ(w  
else if(temp[i1] data[cur]=temp[i1++]; l1!i3m'x  
else 7dxY07 yu  
data[cur]=temp[i2++]; Br-bUoua  
} J]$%1Y  
} hLO nX<%a  
]_5C5m  
} jj.)$|&#`  
m|e!1_ :H  
改进后的归并排序: D*_ F@}=  
E&]S No<  
package org.rut.util.algorithm.support; :90DS_4  
$g 5pKk  
import org.rut.util.algorithm.SortUtil; *:)#'cenI  
gl00$}C  
/** `5h$@  
* @author treeroot `s@1'IG;R_  
* @since 2006-2-2 qC IZW  
* @version 1.0 OB5(4TY  
*/ LvE|K&R|  
public class ImprovedMergeSort implements SortUtil.Sort { )]rGGNF*  
R%}OZJ_  
private static final int THRESHOLD = 10; -08Ys c  
h&[!CtPm  
/* ]uj H7T  
* (non-Javadoc) 4AUY8Pxp  
* 0p&:9|'z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ])0&el3-  
*/ @4hxGk=  
public void sort(int[] data) { *$uKg zv3  
int[] temp=new int[data.length]; ^8E/I]-  
mergeSort(data,temp,0,data.length-1); P0UMMn\-#  
} awo=%vJ&  
vPpbm  
private void mergeSort(int[] data, int[] temp, int l, int r) { IRXpk 6|  
int i, j, k; (z+[4l7  
int mid = (l + r) / 2; , lT8gQ|u  
if (l == r) :9]23'Md  
return; NIQa{R/H  
if ((mid - l) >= THRESHOLD) "'s`?  
mergeSort(data, temp, l, mid); Mm|HA@W^  
else rcNM,!dZ  
insertSort(data, l, mid - l + 1); #S_LKc  
if ((r - mid) > THRESHOLD) aRj3TtFh  
mergeSort(data, temp, mid + 1, r); r=8]Ub[  
else +qjW;]yxP  
insertSort(data, mid + 1, r - mid); nM\W a  
Q8T4_p [-o  
for (i = l; i <= mid; i++) { \-`L}$  
temp = data; S ^2'O7uj  
} ]';!r20  
for (j = 1; j <= r - mid; j++) { o y}(  
temp[r - j + 1] = data[j + mid]; 7{/qQGL  
} Z A7u66  
int a = temp[l]; 2.?:[1g!  
int b = temp[r]; UV@<55)K  
for (i = l, j = r, k = l; k <= r; k++) { ?RrJYj1  
if (a < b) { ?9 2+(s  
data[k] = temp[i++]; Y~gpiL3u  
a = temp; K\=bpc"Fy  
} else { bbS'ZkB\  
data[k] = temp[j--]; eBtkTWx5[/  
b = temp[j]; u[fQvdl  
} W=PDOzB>K  
} 2 R1S>X  
} j&[63XSe  
4hZ-^AL"(  
/** :IbrV@gN{@  
* @param data tE<L4;t  
* @param l _/ P"ulNb  
* @param i ^J\)cw  
*/ xLq+n jH E  
private void insertSort(int[] data, int start, int len) { {Yv |C)O  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); <P$b$fh/  
} "yL&?B"9@  
} (|h<{ -L  
} CA[k$Sw*  
} q{n~s=  
hTH"jAC+  
堆排序: ?AYI   
k:`^KtBMl  
package org.rut.util.algorithm.support; /8J2,8vZ  
SJIJV6}H  
import org.rut.util.algorithm.SortUtil; 9S.R%2xw`  
kZSe#'R's  
/** .oAg (@^6  
* @author treeroot &=@ R,  
* @since 2006-2-2 (#\3XBG  
* @version 1.0 5j,)}AYO  
*/ .J&~u0g  
public class HeapSort implements SortUtil.Sort{ efZdtrKgy  
JI@~FD&  
/* (non-Javadoc) tj{rSg7{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sfa T`q  
*/ ~O |j*T  
public void sort(int[] data) { tJ2l_M^  
MaxHeap h=new MaxHeap(); qt/"$6]%  
h.init(data); <$,i Yx   
for(int i=0;i h.remove(); 8t9sdqM/C  
System.arraycopy(h.queue,1,data,0,data.length); \`|,wLgH  
} r(%#@?&  
e>sr)M  
private static class MaxHeap{ 9Ni$nZN  
Ho\K %#u  
void init(int[] data){ e[>(L%QV+  
this.queue=new int[data.length+1]; 3)__b:7J  
for(int i=0;i queue[++size]=data; 3l5q?"$  
fixUp(size); 2Xe2 %{  
} d=N5cCqq  
} _S@s  
dpGaI  
private int size=0; Hagj^8  
?8YHz  
private int[] queue; c\]h YKA  
89+m?H]K  
public int get() { 9FH=Jp  
return queue[1]; 93[`1_q7\  
} ]+d.X]   
/DZKz"N  
public void remove() { kf&id/|  
SortUtil.swap(queue,1,size--); ctH`71Y  
fixDown(1); pZ OVD%  
} {lx^57v  
file://fixdown 4'G<qJoc  
private void fixDown(int k) { $].< /  
int j; Gd:fWz(  
while ((j = k << 1) <= size) { ;y4 "wBX  
if (j < size %26amp;%26amp; queue[j] j++; oA_AnD?G+  
if (queue[k]>queue[j]) file://不用交换 |F9/7 z\5+  
break; k<8:  
SortUtil.swap(queue,j,k); w}oH]jVKL6  
k = j; l&;#`\s!V  
} z}u  
} c>=[|F{{e  
private void fixUp(int k) { > *vI:MG8  
while (k > 1) { j31 Sc3vG  
int j = k >> 1; yd`.Rb&V  
if (queue[j]>queue[k]) k NK)mE  
break; -`f JhQ|  
SortUtil.swap(queue,j,k); l.>QO ;  
k = j; j~Rh_\>Q  
} )]X_')K  
} }w"laZ*  
is#?O5:2  
} |]\qI  
0#XZ_(@%  
} n8R{LjJ2@  
?}B_'NZ%  
SortUtil: :+!hR4Z~\;  
CO 5?UgA  
package org.rut.util.algorithm; \T<?=A  
0Oe@0L%^3"  
import org.rut.util.algorithm.support.BubbleSort; !oM 1  
import org.rut.util.algorithm.support.HeapSort; u_zp?Nc  
import org.rut.util.algorithm.support.ImprovedMergeSort; IjJ3CJ<  
import org.rut.util.algorithm.support.ImprovedQuickSort; A3M)yWq  
import org.rut.util.algorithm.support.InsertSort; 0m51nw~B  
import org.rut.util.algorithm.support.MergeSort; YujhpJ<  
import org.rut.util.algorithm.support.QuickSort; UO>p-M  
import org.rut.util.algorithm.support.SelectionSort; AGPZd9  
import org.rut.util.algorithm.support.ShellSort; k\zNh<^  
>E[cl\5$E  
/** 6M259*ME  
* @author treeroot %hcY [F<  
* @since 2006-2-2 v3.JG]zLpP  
* @version 1.0 eUx|_*`  
*/ Y~fds#y0  
public class SortUtil { S(9fGh  
public final static int INSERT = 1; ]e)<CE2   
public final static int BUBBLE = 2; ]7c715@  
public final static int SELECTION = 3; IuB0C!'  
public final static int SHELL = 4; C!~&c7  
public final static int QUICK = 5; Y/)>\  
public final static int IMPROVED_QUICK = 6; /d8PDc"  
public final static int MERGE = 7; MP0gLi  
public final static int IMPROVED_MERGE = 8; Yl>@(tu)|  
public final static int HEAP = 9; $+:_>n^#/  
FW=oP>f]w  
public static void sort(int[] data) { AqE . TK  
sort(data, IMPROVED_QUICK); .P-@ !Q5*  
} b s:E`Q  
private static String[] name={ "aAzG+NM  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" CbI[K|  
}; gnx!_H\h<  
vY }/CBmg  
private static Sort[] impl=new Sort[]{ uK3,V0 yz  
new InsertSort(), =#n|t[h-  
new BubbleSort(), A2* z  
new SelectionSort(), G#3 O^,m  
new ShellSort(), #pE : !D  
new QuickSort(), v34XcA  
new ImprovedQuickSort(), v7xc01x  
new MergeSort(), N\<M4 fn  
new ImprovedMergeSort(), a:v&pj+|<  
new HeapSort() %k5^n0|*  
}; Fag%#jxI  
/_aFQ>.4n  
public static String toString(int algorithm){ K`PF|=z  
return name[algorithm-1]; nwHi3ojD:  
} Xxp<qIEm  
l*b3Mg  
public static void sort(int[] data, int algorithm) { k+&LOb7  
impl[algorithm-1].sort(data); r5tv9#4]  
} fh}\#WE"  
WPpl9)Qc  
public static interface Sort { v#nYH?+~mJ  
public void sort(int[] data); EcBSi995dj  
} I tp7X  
Lc0^I<Y  
public static void swap(int[] data, int i, int j) { "P"~/<:)  
int temp = data; ?_}[@x  
data = data[j]; bC)d iC  
data[j] = temp; "*XR'9~7  
} L%U-MOS=  
} "4oY F:h  
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