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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。 ijeas<  
插入排序: fO{'$?K  
s*tzU.E (  
package org.rut.util.algorithm.support; fq(3uE]nC  
g0 k{b  
import org.rut.util.algorithm.SortUtil; rd ]dD G  
/** 2#_ i_j  
* @author treeroot  q^Ui2  
* @since 2006-2-2 g{e@I;F  
* @version 1.0 HV[*=Qi  
*/ >>.4@  
public class InsertSort implements SortUtil.Sort{ 9xRor<  
1#V&'A  
/* (non-Javadoc) a=r^?q'/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]]6  
*/ \~#$o34V  
public void sort(int[] data) { t-Zk)*d/0  
int temp; Clmz}F  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ?{(Jy*  
} 5 8n(fdE  
} nC@UK{tVa  
} xG8z4Yu   
(i@B+c  
} ?UBhM,;XK  
&d6  
冒泡排序: V_P,~!  
/_ RrNzqy  
package org.rut.util.algorithm.support; t }>"nr0  
en8l:INX  
import org.rut.util.algorithm.SortUtil; AkX8v66:  
l.%[s6  
/** 3h4'DQ.g  
* @author treeroot >mp" =Y  
* @since 2006-2-2 ]cP$aixd  
* @version 1.0 G]E-2 _t7  
*/ MB"<^ZX  
public class BubbleSort implements SortUtil.Sort{ /rzZU}3[  
@YI- @  
/* (non-Javadoc) +<7a$/L?4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lQt* LWd[  
*/ (R^Ca7F  
public void sort(int[] data) { A08{]E#v>  
int temp; m ol|E={si  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 9D H}6fO  
if(data[j] SortUtil.swap(data,j,j-1); #TD0)C/  
} Pi'[d7o  
} *6QmYq6c<  
} c n^z=?  
}  cE7IHQ  
o0FVVSl  
} I7HP~v~  
:eL ja*  
选择排序: +*Pj,+;W  
5tcJT z  
package org.rut.util.algorithm.support; &)F# cVB  
.WpvDDUK3  
import org.rut.util.algorithm.SortUtil; 11BfJvs:  
4qg] oiT  
/** ds<q"S {p  
* @author treeroot hC2_Yr>N%  
* @since 2006-2-2 O_|p{65  
* @version 1.0 @WO>F G3  
*/ [ |dQZ  
public class SelectionSort implements SortUtil.Sort {  rhO 8v  
;`}b .S =n  
/* g/jlG%kI}  
* (non-Javadoc) Jsw%.<  
* BV512+M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {+x;J4  
*/ ;eiqzdP  
public void sort(int[] data) { &J}w_BFww  
int temp; <"}WpT  
for (int i = 0; i < data.length; i++) { )d"s6i  
int lowIndex = i; 8~eYN- #W&  
for (int j = data.length - 1; j > i; j--) { 1`l10fqU  
if (data[j] < data[lowIndex]) { YMIX|bj6Y  
lowIndex = j; $+Zj)V(  
} *pKj6x  
} [;qZu`n>  
SortUtil.swap(data,i,lowIndex); 1,(uRS#bk  
} _do(   
} <s(<ax30  
k5TPzm=y{  
} qFg"!w  
P4.snRQ  
Shell排序: ey! {  
) \|Bghui  
package org.rut.util.algorithm.support; `6 `oLu\l  
.m \y6  
import org.rut.util.algorithm.SortUtil; ,?ci+M)  
o7WK"E!pF'  
/** A3c&VT6Q  
* @author treeroot t}2$no?  
* @since 2006-2-2 0F|DD8tHR  
* @version 1.0 ?~s23%E  
*/ 4> $weu^  
public class ShellSort implements SortUtil.Sort{ v|K<3@J  
U2)y fhI  
/* (non-Javadoc) u=9)A9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sCw X|  
*/ SwVdo|%.?  
public void sort(int[] data) { ~Y /55uC  
for(int i=data.length/2;i>2;i/=2){ k| Ye[GM*  
for(int j=0;j insertSort(data,j,i); F^)SQ%xx  
} 1X$hwkof  
} s0bWg$  
insertSort(data,0,1); -L)b;0%  
} QwL'5ws{q  
t:<dirw,o  
/** #pm0T1+jW  
* @param data 56Gc[<nR  
* @param j j,BiWgj$8  
* @param i f}U@e0Lsb  
*/ PK7 kpC  
private void insertSort(int[] data, int start, int inc) { nax(V  
int temp; 4:S?m(ah/  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); g<"k\qs7  
} AyUiX2=w1  
} Hjtn*^fo^  
} j/+e5.EX/  
c5e  wG  
} %Yi^{ZrM  
:?.RZKXQF  
快速排序: )^'g2gVK+p  
hR1n@/nh  
package org.rut.util.algorithm.support; 4`Z8EV  
TUaW'  
import org.rut.util.algorithm.SortUtil; `[*nUdG  
Q1yj+)_  
/** c7fQ{"f 3B  
* @author treeroot a~nErB  
* @since 2006-2-2 ILQB%0!  
* @version 1.0 ]J%p&y+6  
*/ jQc.@^#+x  
public class QuickSort implements SortUtil.Sort{ &bO5+[  
8A3pYW-  
/* (non-Javadoc) n2#Yw}7^,o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z#!}4@_i3  
*/ W$X@DXT=o  
public void sort(int[] data) { FNyr0!t,  
quickSort(data,0,data.length-1); +"Ui @^  
} q0l=S+0  
private void quickSort(int[] data,int i,int j){ 'l| e}eti>  
int pivotIndex=(i+j)/2; Zoi\r  
file://swap ie f~*:5  
SortUtil.swap(data,pivotIndex,j); ]U8VU  
U0Y;*_>4  
int k=partition(data,i-1,j,data[j]); JXBTd=r_oM  
SortUtil.swap(data,k,j); =Bq3O58+  
if((k-i)>1) quickSort(data,i,k-1); RrPo89o  
if((j-k)>1) quickSort(data,k+1,j); +TQMA >@g<  
B?G!~lQ)o  
} nbGB84  
/** @@O=a  
* @param data {B_pjs  
* @param i fuQb h  
* @param j _ `RCY^t  
* @return 4R~f   
*/ HZH zjrx  
private int partition(int[] data, int l, int r,int pivot) { n4YedjHSN  
do{ F{g^4  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); l-Q.@hG  
SortUtil.swap(data,l,r); ;hsem,C h7  
} DD4fV`:kG  
while(l SortUtil.swap(data,l,r); [= GVK  
return l; b& l/)DU  
} &%ZiI@O-  
TC=djC4$/  
} o?Wp[{K  
Imi#$bF6  
改进后的快速排序: @vC7j>*4B  
45u\v2,C3  
package org.rut.util.algorithm.support; k[6xuyY]  
*r&q;ER  
import org.rut.util.algorithm.SortUtil; },d`<^~  
XU3v#Du  
/** c~1X/,biA  
* @author treeroot krw_1Mm  
* @since 2006-2-2 c:R`]4o  
* @version 1.0 !2R<T/9~  
*/ n8!qz:z/  
public class ImprovedQuickSort implements SortUtil.Sort { QX'EMyK$  
$p)7k   
private static int MAX_STACK_SIZE=4096; huu v`$~y  
private static int THRESHOLD=10;  ;m;a"j5  
/* (non-Javadoc) Oh\ +cvbG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :a 5#yh  
*/ Kc>C$}/}$  
public void sort(int[] data) { x1$:u6YD22  
int[] stack=new int[MAX_STACK_SIZE]; mv,<#<-W  
"K"]/3`k-  
int top=-1; AV%?8-  
int pivot; cNX0.7Ls  
int pivotIndex,l,r; [^cflmV  
d=TZaVL$$  
stack[++top]=0; Gl1Qbd0  
stack[++top]=data.length-1; 7.r}98V  
Aj9Onz,Lg  
while(top>0){ cPemrNxydN  
int j=stack[top--]; ;}tEU'&  
int i=stack[top--]; *6-fvqCv  
Zewx*Y|  
pivotIndex=(i+j)/2; g `)5g5  
pivot=data[pivotIndex]; lE8M.ho\  
Vu%XoI)<KY  
SortUtil.swap(data,pivotIndex,j); vBM uVpzO  
$ylQ \Y'  
file://partition \G3 P[E[  
l=i-1; j=%^CRum  
r=j; HywT  
do{ n>_EE w2/  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); <*g!R!  
SortUtil.swap(data,l,r); b;N[_2  
} k k&8:;Vj  
while(l SortUtil.swap(data,l,r); g=*`6@_=  
SortUtil.swap(data,l,j); _:: q S!  
=?*6lS}gy  
if((l-i)>THRESHOLD){ fjE  
stack[++top]=i; tA?cHDp4E  
stack[++top]=l-1; `Jvy~T  
} W;Rx(o>  
if((j-l)>THRESHOLD){ =5UT'3p>  
stack[++top]=l+1; )wmG&"qsP  
stack[++top]=j; Lv`*+;1 K  
} B]`!L/  
n>)'!   
} 0g-bApxz*&  
file://new InsertSort().sort(data); X"hoDg  
insertSort(data); sG/mmZHYzr  
} 9(9+h]h+3  
/** .%.kEJh`  
* @param data JJ50(h)U  
*/ $a.!X8sHB.  
private void insertSort(int[] data) { GwOn&EpY!  
int temp; BEQ$p) h  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); hnQDm$k  
} i/&?e+i  
} >|)ia5#  
} P%#EH2J  
+h64idM{U  
} 6,ZfC<)  
AhZ`hj   
归并排序: h6*&1r  
$`2rtF  
package org.rut.util.algorithm.support; fZ9EE3  
yqy5i{Y  
import org.rut.util.algorithm.SortUtil; )yV|vn  
N2?o6)  
/** Vvth,  
* @author treeroot 3'd(=hJ45$  
* @since 2006-2-2 ){AtV&{$  
* @version 1.0 V~Zi #o  
*/ ]x8_f6;D  
public class MergeSort implements SortUtil.Sort{ 0 !D,74r  
L[]*vj   
/* (non-Javadoc) fn%Gu s~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u|!On  
*/ 0ssKZ9Lc  
public void sort(int[] data) { &C~R*  
int[] temp=new int[data.length]; N1lhlw6  
mergeSort(data,temp,0,data.length-1); 9`"o,wGX3  
} I)xB I~x  
e}x}Fj</(  
private void mergeSort(int[] data,int[] temp,int l,int r){ Xq3n7d.  
int mid=(l+r)/2; LvWl*:z  
if(l==r) return ; thoAEG80  
mergeSort(data,temp,l,mid); ")/TbT Vu  
mergeSort(data,temp,mid+1,r); TZ`@pDi  
for(int i=l;i<=r;i++){ egBjr?  
temp=data; Qz T>h  
} $Hx00 ho  
int i1=l; Q?f%]uGFQ  
int i2=mid+1; }(g`l)OX  
for(int cur=l;cur<=r;cur++){ }Yi)r*LI3  
if(i1==mid+1) dmq<vVxC  
data[cur]=temp[i2++]; tSST.o3  
else if(i2>r) C~do*rnM^  
data[cur]=temp[i1++]; G}o?lo\#h  
else if(temp[i1] data[cur]=temp[i1++]; L<kIzB !  
else Cm~h\+"  
data[cur]=temp[i2++]; \9U4V>p  
} b#**`Y  
} =h?Q.vad  
.Z,3:3,]  
} 5yvaY "B  
jpL' y1@Ut  
改进后的归并排序: $jt  UQ1  
,BK6a'1J  
package org.rut.util.algorithm.support; k,EI+lCX  
{U$qxC]M  
import org.rut.util.algorithm.SortUtil; p*11aaIbp~  
-mSiZ  
/** l!n<.tQW  
* @author treeroot 81\$X  
* @since 2006-2-2 J{GtH[  
* @version 1.0 L{v^:  
*/ w#?@ulr]d  
public class ImprovedMergeSort implements SortUtil.Sort { 8q)wT0A~  
0-)D`s%  
private static final int THRESHOLD = 10; $ae*3L>5M  
9n$0OH /q  
/* A),nkw0X  
* (non-Javadoc) so* lV  
* Mo+ mO&B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NDG3mCl  
*/ tMN^"sjf*  
public void sort(int[] data) { 5e!YYt>  
int[] temp=new int[data.length]; o8 A]vaa  
mergeSort(data,temp,0,data.length-1); / 38b:,  
} mhp&; Q9  
aR }|^ex  
private void mergeSort(int[] data, int[] temp, int l, int r) { 2gn*B$a  
int i, j, k; ryz [A:^G  
int mid = (l + r) / 2; #z|\AmZ\  
if (l == r) G;:D6\  
return; ^y@ RfM=A  
if ((mid - l) >= THRESHOLD) ~<M/<%o2*  
mergeSort(data, temp, l, mid); ]!>ThBMa  
else ~|j:xM(i  
insertSort(data, l, mid - l + 1); 9N H"Ik*  
if ((r - mid) > THRESHOLD) 6E9y[ %+  
mergeSort(data, temp, mid + 1, r); )P6n,\  
else >".,=u'  
insertSort(data, mid + 1, r - mid); ]J^ 9iDTTA  
.s4hFB^n  
for (i = l; i <= mid; i++) { U] 2fV|Hn  
temp = data; Jjb(lW  
} 9aLS%-x!+  
for (j = 1; j <= r - mid; j++) { &G5=?ub  
temp[r - j + 1] = data[j + mid]; Evz;eobW/  
} JHY0 J &4s  
int a = temp[l]; a:C'N4K  
int b = temp[r]; >*xa\ve  
for (i = l, j = r, k = l; k <= r; k++) { }*!7 Vrep  
if (a < b) { Tct[0B  
data[k] = temp[i++]; b8V]/  
a = temp; >Z#=<  
} else { ` [ EzU+  
data[k] = temp[j--]; 9N9dQ}[:g  
b = temp[j]; ]w _,0q  
} s52c`+  
} stnyJ9  
} lO/<xSjNd  
By=/DVm)=  
/** qyP|`Pm4  
* @param data zy(i]6  
* @param l 2 }QD>  
* @param i 0y$aGAUm  
*/ sPCp20x:y8  
private void insertSort(int[] data, int start, int len) { 9`J!]WQ1[  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1);  \Vis  
} BX[92~Bq  
} _VU/j9<+  
} ,}M@Am0~  
} ETP}mo  
d*26;5~\  
堆排序: "7R"(.~>  
5YJn<XEc  
package org.rut.util.algorithm.support; 1y5]+GU'`  
iSTr;>A  
import org.rut.util.algorithm.SortUtil; <BIj a  
Vp $]  
/** *|n::9  
* @author treeroot { 7y.0_Y  
* @since 2006-2-2 P5;LM9W  
* @version 1.0 t<O5_}R%d  
*/ w=I' CMRt  
public class HeapSort implements SortUtil.Sort{ ;!4Bw"Gg  
p*10u@,  
/* (non-Javadoc) qC9$xIWq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^/ K\a ,  
*/ Xtqjx@ye  
public void sort(int[] data) { T ,, Ao36  
MaxHeap h=new MaxHeap(); DPvM|n`TW  
h.init(data); Bcx-t)[  
for(int i=0;i h.remove(); n{F$,a  
System.arraycopy(h.queue,1,data,0,data.length); D_GIj$%N[  
} yD iL  
q<>  
private static class MaxHeap{ W G2 E3y  
0N3 cC4!  
void init(int[] data){ SWr?>dl  
this.queue=new int[data.length+1]; DpIv <m]  
for(int i=0;i queue[++size]=data; OL]^4m  
fixUp(size); 4[z a|t  
} ;dl>  
} r}OK3J  
3Oy-\09  
private int size=0; 8tWOVLquJ  
yp=Hxf  
private int[] queue; LTu cs }  
03*` T  
public int get() { >_QC_UX>4i  
return queue[1]; qu[ ~#  
} Gx ?p,Fj  
q/xMM `{  
public void remove() { D%v4B`4ua'  
SortUtil.swap(queue,1,size--); !dB {E  
fixDown(1); :8}QKp  
} !RLg[_'  
file://fixdown 6#XB'PR2p  
private void fixDown(int k) { ODK$G [-  
int j; &?^S`V8R*  
while ((j = k << 1) <= size) { E 3b`GRay  
if (j < size %26amp;%26amp; queue[j] j++; Y) Y`9u<?  
if (queue[k]>queue[j]) file://不用交换 !oeu  
break; <Vyv)#32o3  
SortUtil.swap(queue,j,k); orn9;|8q  
k = j; oxE'u<  
} ;crQ7}k  
} $x5P5^Y  
private void fixUp(int k) { n(.y_NEgV!  
while (k > 1) { E"5 z T1d  
int j = k >> 1; d3h2$EDD  
if (queue[j]>queue[k]) U'S}7gya  
break; e&f9/rfx  
SortUtil.swap(queue,j,k); gB@Xi*  
k = j; "bAkS}(hB(  
} 43pQFDWa  
} m xtLcG4G  
&P&LjHFK  
} V6"<lK8"  
jC1mui|Y^  
} h+Km|  
}}XYV eI  
SortUtil: cZKK\hf<  
!=@Lyt)_b  
package org.rut.util.algorithm; W R@=[G#TJ  
Q[^IX  
import org.rut.util.algorithm.support.BubbleSort; zCKZv|j6  
import org.rut.util.algorithm.support.HeapSort; {J q[N}  
import org.rut.util.algorithm.support.ImprovedMergeSort; T;jp2 #  
import org.rut.util.algorithm.support.ImprovedQuickSort; pv&:N,p  
import org.rut.util.algorithm.support.InsertSort;  6\ /x  
import org.rut.util.algorithm.support.MergeSort; @cdd~9w  
import org.rut.util.algorithm.support.QuickSort; yiGq?WA7  
import org.rut.util.algorithm.support.SelectionSort; naCPSsei  
import org.rut.util.algorithm.support.ShellSort; ^,')1r,  
24"Trg\WK[  
/** tLe!_p)  
* @author treeroot Q=J"#EFs  
* @since 2006-2-2 !7!xJ&/V  
* @version 1.0 8;;!2>N  
*/ v!?bEM3D  
public class SortUtil { H];|<G  
public final static int INSERT = 1; R*IO%9O  
public final static int BUBBLE = 2; A_1cM#4  
public final static int SELECTION = 3; d_=@1 JM>  
public final static int SHELL = 4; ?-0k3  
public final static int QUICK = 5; %)T>Wn%b]v  
public final static int IMPROVED_QUICK = 6; ;4tVFqR  
public final static int MERGE = 7; +[*VU2f t  
public final static int IMPROVED_MERGE = 8; %o9@[o .]  
public final static int HEAP = 9; `E>HpRcxD  
aO('X3?  
public static void sort(int[] data) { ZB GLwe  
sort(data, IMPROVED_QUICK); Pcut#8?  
} zQ9"i  
private static String[] name={ Zpg/T K  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" -_Pd d[M  
}; wEENN_w  
gO%#'Eb2  
private static Sort[] impl=new Sort[]{ A,i.1U"w8  
new InsertSort(), e>~g!S}G  
new BubbleSort(), b{<qt})  
new SelectionSort(), $,q~q^0  
new ShellSort(), Htn=h~U`z  
new QuickSort(), ?>5[~rMn  
new ImprovedQuickSort(), GqumH/;  
new MergeSort(), i`/_^Fndyu  
new ImprovedMergeSort(), <uUQ-]QOIh  
new HeapSort() yjUZ 40Dq  
}; 90> (`pI=  
`rsPIOu  
public static String toString(int algorithm){ K[0.4+  
return name[algorithm-1]; 5G=<2;  
} jZeY^T)f"  
tGnBx)J|  
public static void sort(int[] data, int algorithm) { N&7= hni  
impl[algorithm-1].sort(data); bqp6cg\p  
} zvV<0 Z  
CI"7* z_  
public static interface Sort { )orVI5ti  
public void sort(int[] data); lP& 7U  
} ,dn9tY3  
Vy0s%k  
public static void swap(int[] data, int i, int j) { O,R5csMh  
int temp = data; GZ0? C2\  
data = data[j]; C( 8i0(1  
data[j] = temp; bVmHUcR0  
} 5vs~8|aRo  
} nf& P Dv1  
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