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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。 \4C)~T:*  
插入排序: AtuZF  
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package org.rut.util.algorithm.support; 8\P JSr  
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import org.rut.util.algorithm.SortUtil; "{mt?  
/** )ZviS.  
* @author treeroot UVnrDhd!0  
* @since 2006-2-2 V~JBZ}`TG<  
* @version 1.0 *(>Jd|C  
*/ Y<de9Z@  
public class InsertSort implements SortUtil.Sort{ }[ 7Nb90v  
[3GKPX:OA/  
/* (non-Javadoc) THb A(SM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [6oq##  
*/ IBzHR[#,^  
public void sort(int[] data) { O5c_\yv=  
int temp; EP/&m|o|G  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 5wy;8a  
} fHW-Je7mG  
} %!>k#F^S  
} fdg[{T4:  
XlE$.  
} osI- o~#>  
jg7d7{{SB  
冒泡排序: `x5ll;"J  
$Gr4sh!cE  
package org.rut.util.algorithm.support; }FuVY><l  
v4X_v!CQ  
import org.rut.util.algorithm.SortUtil; _QD/!~O  
yIM.j;5:~5  
/** [))gn  
* @author treeroot aS3P(s L  
* @since 2006-2-2 >9<_s ^_  
* @version 1.0 6R0D3kW  
*/ }3bQ>whF  
public class BubbleSort implements SortUtil.Sort{ K lPm=  
U$MWsDn   
/* (non-Javadoc) ?< -wHj)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =mDy@%yx!  
*/ IJ+O),'  
public void sort(int[] data) { QxP` fKC8  
int temp; ftDVxKDE?S  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Rs`Vr_?Hk  
if(data[j] SortUtil.swap(data,j,j-1); +>n. T  
} k*A4;Bm  
} ADuZ}]  
} *'kC8 ZR5  
} /W7&U =d9  
rGQ86L<  
} 3 (Gygq#  
`[w}hFl~q  
选择排序: O8!!UA8V  
l#mqV@?A~  
package org.rut.util.algorithm.support; JDIz28Ww  
VGq{y{(  
import org.rut.util.algorithm.SortUtil; pT|./ Fe  
H&"_}  
/** (or =f`  
* @author treeroot kfH9Y%bOy  
* @since 2006-2-2 j 8~Gv=(h  
* @version 1.0 /DgT1^&0  
*/ <FMuWHY  
public class SelectionSort implements SortUtil.Sort { ,C5@ P+A  
eh8<?(eK  
/* 0Og/47dO.2  
* (non-Javadoc) o{s4.LKK  
* W\d0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^XjvJa  
*/ #JX|S'\x  
public void sort(int[] data) { ;,[EJR^CI  
int temp; 1q;I7_{ 2  
for (int i = 0; i < data.length; i++) { ua6*zop  
int lowIndex = i; PW(_yB;  
for (int j = data.length - 1; j > i; j--) { ?S;et2f  
if (data[j] < data[lowIndex]) { h8Dtq5t4  
lowIndex = j; ?h>(&H jWV  
} BxW||O|_N"  
} =|DkD- O  
SortUtil.swap(data,i,lowIndex); $i5G7b  
} LIm$Wl1U  
} S^_JC  
LNsE7t  
} D/ NIn=>j  
arpJiG~JR  
Shell排序: gK]T}  
'Q^G6'(SaK  
package org.rut.util.algorithm.support; \oD=X}UQw(  
[qc6Q:  
import org.rut.util.algorithm.SortUtil; z{<q0.^EFh  
Lx4H/[$6D  
/** :$)aMEq  
* @author treeroot o =jX  
* @since 2006-2-2 2=/-d$  
* @version 1.0 zmrX %!CW  
*/ Y6[]wUJ  
public class ShellSort implements SortUtil.Sort{ HzFt  
m-&a~l  
/* (non-Javadoc) (RI>aDG RH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'PxL^  
*/ }K qw\]`  
public void sort(int[] data) { qrORP3D@  
for(int i=data.length/2;i>2;i/=2){ }VJ hw*s  
for(int j=0;j insertSort(data,j,i); Ezo" f  
} kG~ivB}x  
} "X!_37kQ  
insertSort(data,0,1); -&HoR!af  
} "1pZzad  
ZFd{q)qe   
/** `rRg(fCN!M  
* @param data _YD<Q@  
* @param j +eH=;8  
* @param i [jmAMF<F  
*/ +L<w."WG  
private void insertSort(int[] data, int start, int inc) { 9h)P8B.>M  
int temp; eN7yjd'Y6  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); PT= 2LZ  
} ! Dhfr{  
} Xl '\krz  
} iI/'! 85  
r.W"@vc>  
} 1&x0+~G  
%'p|JS  
快速排序: ,m_&eF  
&Funao>  
package org.rut.util.algorithm.support; Vo58Nz:%  
K;(|v3g6  
import org.rut.util.algorithm.SortUtil; p%i .(A  
wMR[*I/  
/** R?FtncL%D  
* @author treeroot v6, o/3Ex  
* @since 2006-2-2 %%H. &*i,  
* @version 1.0 itvy[b-*  
*/ !IrKou)/_  
public class QuickSort implements SortUtil.Sort{ 5juCeG+Z  
Kk"B501  
/* (non-Javadoc) TQyFF/K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +k"8e?/e.  
*/ w{UKoU  
public void sort(int[] data) { _{@}Fd?o  
quickSort(data,0,data.length-1); 1OJD\wc  
} \H'CFAuF  
private void quickSort(int[] data,int i,int j){ ~wQ WWRk  
int pivotIndex=(i+j)/2; bB[*\  
file://swap }j5@\c48  
SortUtil.swap(data,pivotIndex,j); I(r5\A=   
~(L<uFU V  
int k=partition(data,i-1,j,data[j]); F b`7 aFIf  
SortUtil.swap(data,k,j); :/?R9JVI  
if((k-i)>1) quickSort(data,i,k-1); {  /Q?  
if((j-k)>1) quickSort(data,k+1,j); ob()+p.kK  
*1 eTf  
} '3kL=(  
/** aABE= 9Y  
* @param data ?f%DVK d  
* @param i $f@-3/V6{  
* @param j _J$p <  
* @return 6T aT_29  
*/ fCo2".Tk  
private int partition(int[] data, int l, int r,int pivot) { r  E *u  
do{ X<bj2 w  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ;Z<*.f'^fc  
SortUtil.swap(data,l,r); [8(9.6f  
} 97=YFK~*  
while(l SortUtil.swap(data,l,r); ur_"m+  
return l; /Gu2@m[r  
} Ik2szXh[J  
N4JL.(m){I  
} (VF4]  
jjlCi<9CQ^  
改进后的快速排序: ;`Ch2b1+  
7m)ykq:?  
package org.rut.util.algorithm.support; 7=[O6<+o  
J!gWRw5  
import org.rut.util.algorithm.SortUtil; %)@(T ye -  
7]+'%Uwu)  
/** t~=@r9`S  
* @author treeroot k*+ZLrT  
* @since 2006-2-2 oXOO 10  
* @version 1.0 `x^,k% :4  
*/ 6xQe!d3>s3  
public class ImprovedQuickSort implements SortUtil.Sort { fP4IOlHkE  
t 1'or  
private static int MAX_STACK_SIZE=4096; $@!&ML  
private static int THRESHOLD=10; ?^A:~"~  
/* (non-Javadoc) dg@/HLZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :a<TV9?H0  
*/ %>}7 $Y%  
public void sort(int[] data) { ]m,p3  
int[] stack=new int[MAX_STACK_SIZE]; > ]N0w  
i!-sbwd7  
int top=-1; {xx;zjt%}}  
int pivot; SNV+.xN  
int pivotIndex,l,r; 9'r3L)[  
;DWp>jgy  
stack[++top]=0; z Clm'X/  
stack[++top]=data.length-1; OX`GN#yl  
* =N 6_  
while(top>0){ xRZT  
int j=stack[top--]; tqk6m# @(  
int i=stack[top--]; `v+O5  
]cY'6'}Hz  
pivotIndex=(i+j)/2; wAwH8xLU  
pivot=data[pivotIndex]; p{QKj3ov  
"k@/Z7=  
SortUtil.swap(data,pivotIndex,j); J A2}  
^bw~$*"j#  
file://partition vX)Y%I  
l=i-1; ap_+C~%+  
r=j; ?B4QTx9B  
do{ /9^0YC;Y*  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); N.cRZm%  
SortUtil.swap(data,l,r); WK5bt2x  
} EjCs  
while(l SortUtil.swap(data,l,r); U.9nHo{  
SortUtil.swap(data,l,j); ~a|Q[tiV]  
yKy)fn!  
if((l-i)>THRESHOLD){ {.)~4.LhQM  
stack[++top]=i; D#AxgF_He  
stack[++top]=l-1; `I:,[3_/   
} Ceb i9R[  
if((j-l)>THRESHOLD){ n8ya$bc  
stack[++top]=l+1; Q&\ksM  
stack[++top]=j; /JY i^rZ  
} x1ex}_\  
,;& PKY  
} 90I3_[Ii  
file://new InsertSort().sort(data); yU lQPrNX  
insertSort(data); r>eXw5Pr7  
} XfDQx!gJ  
/** <]`2H}*U'  
* @param data <GR:5pJ%  
*/ r+yLK(<zp  
private void insertSort(int[] data) { spDRQ_qq  
int temp; !ry+ r!"  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); PQ|x?98  
} :G)x+0u  
} 4s2ex{$+MA  
} PQay sdb  
Q)dns)_x  
} 'hWRwP|  
D1/$pA+B  
归并排序: =jHy6)6w  
NP/2gjp  
package org.rut.util.algorithm.support; 51usiOq  
:S2MS{>Mo  
import org.rut.util.algorithm.SortUtil; L zy|<:K+$  
MM7gMAA.mz  
/** o8"xoXK5xf  
* @author treeroot 4x >e7Kf  
* @since 2006-2-2 @~HD<K  
* @version 1.0 #bH[UId[  
*/ a}{! %5  
public class MergeSort implements SortUtil.Sort{ GDntGTE~sk  
Fje%hcV  
/* (non-Javadoc) |e(x< [s5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L0~O6*bk  
*/ s2kynQ#a  
public void sort(int[] data) { MeS$+9jV(  
int[] temp=new int[data.length]; zvg&o)/[  
mergeSort(data,temp,0,data.length-1); {S~$\4vC!  
} r}bKVne  
"+_0idpF  
private void mergeSort(int[] data,int[] temp,int l,int r){ tx-bzLo\  
int mid=(l+r)/2; osI(g'Xb  
if(l==r) return ; )2hoO_l:  
mergeSort(data,temp,l,mid); wkw/AZ{27  
mergeSort(data,temp,mid+1,r); tam/FzVw  
for(int i=l;i<=r;i++){ 7Kjq1zl;  
temp=data; ^5F/=TtE G  
} i>}z$'X  
int i1=l; )I9(WVx!]  
int i2=mid+1; @x4Dt&:"  
for(int cur=l;cur<=r;cur++){ Rl8-a8j$f.  
if(i1==mid+1) ~VKXL,.  
data[cur]=temp[i2++]; $T0[  
else if(i2>r) sP7(1)\  
data[cur]=temp[i1++]; 2e=Hjf )  
else if(temp[i1] data[cur]=temp[i1++]; $4]PN2d&  
else gd*?kXpt  
data[cur]=temp[i2++]; WdnP[x9  
} ozG:f*{T  
} eU0-_3gN_  
[5-5tipvWp  
} yFqC-t-i  
gw^+[}U#  
改进后的归并排序: ~E~J*R Ze  
^DOcw@Z6HC  
package org.rut.util.algorithm.support; FW,D\51pTP  
Y@eUvz  
import org.rut.util.algorithm.SortUtil; L&%iY7sC`  
HVp aVM  
/** 6h%(0=^  
* @author treeroot CTYkjeej  
* @since 2006-2-2 Wi<Fkzj  
* @version 1.0 NM]/OKs'H  
*/ @So"(^  
public class ImprovedMergeSort implements SortUtil.Sort { ~sD'pS  
/j As`"U  
private static final int THRESHOLD = 10; T~Cd=s(T"  
' r/1+.  
/* WDq3K/7\  
* (non-Javadoc) -M}iDBJx>#  
* AH+J:8k  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0Og =H79<  
*/ I6_+3}Hm{  
public void sort(int[] data) { !/SFEL@_B  
int[] temp=new int[data.length]; ;iVyJZI  
mergeSort(data,temp,0,data.length-1); Sz&`=x#  
} cA kw5}P   
;f\0GsA#  
private void mergeSort(int[] data, int[] temp, int l, int r) { Qd&j~cG@  
int i, j, k; so*7LM?ib>  
int mid = (l + r) / 2; '(}BfDP  
if (l == r) VTU-'q  
return; Rx.0P6s  
if ((mid - l) >= THRESHOLD) V'B 6C#jT  
mergeSort(data, temp, l, mid); FgxQ}VvlH  
else 0Qz \"gr  
insertSort(data, l, mid - l + 1); p*Cbe\  
if ((r - mid) > THRESHOLD) U<x3=P  
mergeSort(data, temp, mid + 1, r); RD^o&VXO  
else "rtmDNpL  
insertSort(data, mid + 1, r - mid); 5h&8!!$[  
;A_QI>>  
for (i = l; i <= mid; i++) { z; +x`i.  
temp = data; smggr{-  
} ;_!;D#:  
for (j = 1; j <= r - mid; j++) { $si2H8  
temp[r - j + 1] = data[j + mid]; {<lV=0]  
} Qa=;Elp:[  
int a = temp[l]; })Jp5vv  
int b = temp[r]; _]g6 3q  
for (i = l, j = r, k = l; k <= r; k++) { :n=+$Dq  
if (a < b) { R0>L[1o  
data[k] = temp[i++]; '@FKgy;B)-  
a = temp; sx;1V{|g  
} else { y< 84Gw_  
data[k] = temp[j--]; 5o?bF3  
b = temp[j]; #X+)  
} 6m9Z5:xG  
} B!Y;VdX  
} g?ft;kR6S  
uv$y"1'g  
/** >}iYZ[ V  
* @param data 51A>eU|  
* @param l j<[<qU:  
* @param i d 9|u~3  
*/ PF~&!~S>W  
private void insertSort(int[] data, int start, int len) { 4D8q Gti  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); f`Nu]#i  
} {,m!%FDL  
} L_(|5#IDw  
} .3[YOM7h  
} |b@-1  
KM6r}CDHs  
堆排序: "(5M }5D  
w*?JW  
package org.rut.util.algorithm.support; F 1BPzRo`  
^J327  
import org.rut.util.algorithm.SortUtil; ^U52 *6  
|cH\w"DcXw  
/** T SOt$7-  
* @author treeroot p8Pvctc  
* @since 2006-2-2 F~m tE8B:  
* @version 1.0 z;-2xD0&U[  
*/ P _9O8"W  
public class HeapSort implements SortUtil.Sort{ )vw3Y88  
~o+u:]  
/* (non-Javadoc) j=7]"%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `'~|DG}a  
*/ /)|*Vzu  
public void sort(int[] data) { SpkD  
MaxHeap h=new MaxHeap(); 9%x[z%06  
h.init(data); \ZA%"F){  
for(int i=0;i h.remove(); pJqayzV  
System.arraycopy(h.queue,1,data,0,data.length); Y!KGJ^.mF  
} b[$>HB_Na  
E 0YXgQa  
private static class MaxHeap{  l)?c3  
{w2<;YXj!  
void init(int[] data){ F](kU#3"S  
this.queue=new int[data.length+1]; %FwLFo^v  
for(int i=0;i queue[++size]=data; PffRV7qU0  
fixUp(size); #JVcl $0Y  
} j0Q ;OKu  
} yd2ouCUV  
8g<3J-7Mm  
private int size=0; ^ H'|iju  
$Uzc  
private int[] queue; @r#>-p  
Ih.o;8PpK  
public int get() { Ji=E 1R  
return queue[1]; VBOq~>V6(v  
} Ls9G:>'rR  
do G&qXw  
public void remove() { uvT]MgT  
SortUtil.swap(queue,1,size--); ztf(.~  
fixDown(1); *p VKMmU  
} I` /'\cU9  
file://fixdown ~(}zp<e|  
private void fixDown(int k) { +_+}^Nf]Y3  
int j; R!:1{1  
while ((j = k << 1) <= size) { k+&|*!j  
if (j < size %26amp;%26amp; queue[j] j++; %hY+%^k.  
if (queue[k]>queue[j]) file://不用交换 na<g /&  
break; 8G9V8hS1#B  
SortUtil.swap(queue,j,k); BH=vI<D  
k = j; eI- ~ +.  
} $L?stgU  
} &DgIykqN  
private void fixUp(int k) { U|,VH-#  
while (k > 1) { m~# O ~)  
int j = k >> 1; zp d4uto5  
if (queue[j]>queue[k]) A\WgtM  
break; %6 Bt%H  
SortUtil.swap(queue,j,k); fuQ? @F  
k = j; Ehg5u'cj  
}  Y]P]^3  
} Dk:Zeo]+my  
F`'e/  
} B6,"S5@  
1h|JKu0  
} QGfU:  
'H+pwp"M@  
SortUtil: 8He^j5  
"Y4 tt0I  
package org.rut.util.algorithm; UAa2oY&  
2uz<n}IV  
import org.rut.util.algorithm.support.BubbleSort; yt$V<8a  
import org.rut.util.algorithm.support.HeapSort; UA}k"uM  
import org.rut.util.algorithm.support.ImprovedMergeSort; < jfi"SJu  
import org.rut.util.algorithm.support.ImprovedQuickSort; 2U i)'0  
import org.rut.util.algorithm.support.InsertSort; {4UlJ,Z.n  
import org.rut.util.algorithm.support.MergeSort; x2;92I{5C,  
import org.rut.util.algorithm.support.QuickSort; RoP z?,u  
import org.rut.util.algorithm.support.SelectionSort; 6Vi #O^>  
import org.rut.util.algorithm.support.ShellSort; aiea& aJ  
<vOljo  
/** wOINcEdx  
* @author treeroot haS`V  
* @since 2006-2-2  s(F^P  
* @version 1.0 a(!:a+9WOP  
*/ A:>G:X5t  
public class SortUtil { W&)O i ZN  
public final static int INSERT = 1; t[%9z6t  
public final static int BUBBLE = 2; DqbN=[!X~n  
public final static int SELECTION = 3; [K,&s8N5  
public final static int SHELL = 4; 6dV92:  
public final static int QUICK = 5; ACc.&,!IZ  
public final static int IMPROVED_QUICK = 6; >AV?g8B;  
public final static int MERGE = 7; -49OE*uF  
public final static int IMPROVED_MERGE = 8; _<&IpT{w+  
public final static int HEAP = 9; (V}D PA  
"@DCQ  
public static void sort(int[] data) { W.{#Pg1Da  
sort(data, IMPROVED_QUICK); HX?5O$<<N  
} EPW Iu)A  
private static String[] name={ b>?X8)f2e  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" jO3Z2/#  
}; Q l ql(*  
$GPenQ~},  
private static Sort[] impl=new Sort[]{ -fn["R]  
new InsertSort(), sLPFeibof5  
new BubbleSort(), {^5r5GB=*  
new SelectionSort(), CZt)Q4  
new ShellSort(), | \C{R  
new QuickSort(), -7>vh|3  
new ImprovedQuickSort(),  jmz, 1[  
new MergeSort(), ,@8>=rT  
new ImprovedMergeSort(), 5,k&^CK}  
new HeapSort() Ay/ "2pDZ  
}; %#Fd0L  
Y<I/y  
public static String toString(int algorithm){ t :sKvJ  
return name[algorithm-1]; "EDn;l-Q  
} p~En~?<  
3T%WfS+  
public static void sort(int[] data, int algorithm) { aa8WRf  
impl[algorithm-1].sort(data); ^3F[^#"  
} 0l!@bj  
esWgYAc3{  
public static interface Sort { ySL 31%  
public void sort(int[] data); G/bWn@  
} 5,|^4 ZA  
-aXV}ZY"  
public static void swap(int[] data, int i, int j) { ;q59Cr75  
int temp = data; eZk [6H  
data = data[j]; V.>'\b/#  
data[j] = temp; FD,M.kbg  
} s'J8E+&5  
} `b+f^6SJn  
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