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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。 M=57 d7  
插入排序: }538vFNi  
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package org.rut.util.algorithm.support; "v"w ER?  
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import org.rut.util.algorithm.SortUtil; s4$Z.xwr  
/** Sc<%$ Gd  
* @author treeroot 6%K,3R-d  
* @since 2006-2-2 *o/ Q#  
* @version 1.0 0<{+M`G/  
*/ ]yxRaW9f  
public class InsertSort implements SortUtil.Sort{ a-t}L{~  
:\+;5Se+l  
/* (non-Javadoc) Tn~b#-0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {jOCz1J  
*/ e7j3 0Iy  
public void sort(int[] data) { PTu~PVbp4  
int temp; ;+dB-g[  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); =]pcC  
} Ax=k0%M[&  
} `dH[&=S  
} ;_yp@.,\T  
l3sL!D1u  
} -NG`mfu  
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冒泡排序: =%4vrY `  
; 7`y##  
package org.rut.util.algorithm.support; m)A~1+M$)L  
'NM$<<0  
import org.rut.util.algorithm.SortUtil; +v 9@du  
'g8~uP  
/** I e#LZti  
* @author treeroot W2F %E  
* @since 2006-2-2 :EISms  
* @version 1.0 ?mK`Wleh?  
*/ Ip/_uDi+!Z  
public class BubbleSort implements SortUtil.Sort{ Z/-!-  
pU4 B6KTW  
/* (non-Javadoc) O\64)V 0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YQzs0t ,  
*/ D&0@k'  
public void sort(int[] data) { Y7{9C*>  
int temp; I/ pv0  
for(int i=0;i for(int j=data.length-1;j>i;j--){ K<HF!YU#I2  
if(data[j] SortUtil.swap(data,j,j-1); \X5>HPB  
} 7b,5*]oZ  
} : QK )Ym  
} qwlIz/j  
} 7|A9  
D\~*| J  
} RcUKe,  
E6iUa'  
选择排序: `ySmzp  
o(,u"c/Or  
package org.rut.util.algorithm.support; ncEOz1u  
{L[n\h.4.  
import org.rut.util.algorithm.SortUtil; J?\z{ ;qa  
x[Xj[O  
/** b(lC7Xm  
* @author treeroot |OXufV?I  
* @since 2006-2-2 ?fB}9(6  
* @version 1.0 a'f0Wv0%"  
*/ @za X\  
public class SelectionSort implements SortUtil.Sort { "o +" Jd  
#C+""qm  
/* l65-8  
* (non-Javadoc) TI{W(2O*  
* FFH9 $>A  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2k,!P6fgl  
*/ Mf0XQ3n`H  
public void sort(int[] data) { )q?z "F|  
int temp; c;w%R8z  
for (int i = 0; i < data.length; i++) { :NL.#!>/  
int lowIndex = i; V+/Vk1  
for (int j = data.length - 1; j > i; j--) { ^<0u~u)%T  
if (data[j] < data[lowIndex]) { %,u_ `P  
lowIndex = j; PTfy#  
} |fXwH>'sw  
} WlHw\\ur  
SortUtil.swap(data,i,lowIndex); Sb=cWn P  
} q' };.tv  
} |Uz?i7z  
P 0xInW F  
} \`N%77A  
Gld|w=qr  
Shell排序: 7xAzd# c?=  
zi~_[l-  
package org.rut.util.algorithm.support; "Jw6.q+  
VmLV:"P}^  
import org.rut.util.algorithm.SortUtil; A&#P=m j  
|A_yr/f  
/** OO.. Y  
* @author treeroot wv>uT{g#  
* @since 2006-2-2 Z~}=q  
* @version 1.0 M{S7tMX  
*/ _ukKzY  
public class ShellSort implements SortUtil.Sort{ 5b9v`6Kq  
}-H<wQ&x  
/* (non-Javadoc) $QQv$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bd[zdL#4K  
*/ z= pb<Y@X  
public void sort(int[] data) { IxwOzpr  
for(int i=data.length/2;i>2;i/=2){ &:g5+([<  
for(int j=0;j insertSort(data,j,i); OczVObbS  
} j%R}  
} )--v> *,V  
insertSort(data,0,1); ag*RQ  
} 8fzmCRFH  
>Z k$q~'+  
/** >#z*gCO5,  
* @param data pEIc ?i*  
* @param j rf"%D<bb  
* @param i *S.R#4w  
*/ uX*H2"A  
private void insertSort(int[] data, int start, int inc) { %\?2W8Qv_J  
int temp; KQ<pQkhv  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ,?;q$Xoi  
} )>q.!"B  
} 7_ g}t!b`  
} ;\=W=wL(  
hv 18V>8  
} yyJ4r}TE  
M$L1!o1Xf  
快速排序: ^g`1SU`  
0R~{|RHM  
package org.rut.util.algorithm.support; #z{9:o7[-  
vKppXm1  
import org.rut.util.algorithm.SortUtil; 1_ uq46  
:. B};;N  
/**  ]qCAog  
* @author treeroot U@v=q9'W  
* @since 2006-2-2 y?W8FL  
* @version 1.0 '|n-w\ >Wv  
*/ Hw8`/'M=%5  
public class QuickSort implements SortUtil.Sort{ cF_hU"  
n|F$qV_p\  
/* (non-Javadoc) HqXaT6#/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L_uliBn  
*/ O#Ab1FQn  
public void sort(int[] data) { 1,fjdd8OM;  
quickSort(data,0,data.length-1); afRUBjs  
} #"%=7(  
private void quickSort(int[] data,int i,int j){ _A%} >:q  
int pivotIndex=(i+j)/2; R*I{?+  
file://swap `i0RLGze  
SortUtil.swap(data,pivotIndex,j); '7}s25[{\  
<\c 5  
int k=partition(data,i-1,j,data[j]); Hs<vCL \  
SortUtil.swap(data,k,j); SlvQ)jw%  
if((k-i)>1) quickSort(data,i,k-1); H)1< ;{:  
if((j-k)>1) quickSort(data,k+1,j); xfw)0S  
6bCC6G  
} |S#)[83*3  
/** O G#By6O  
* @param data |Euf:yWY  
* @param i M H }4F  
* @param j GbG!vo  
* @return 'Syq!=,  
*/ O`- JKZc  
private int partition(int[] data, int l, int r,int pivot) { RS@*/.]o  
do{ U]Q2EL\%  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Px:PoOw\  
SortUtil.swap(data,l,r); (</cu$w>H)  
} Dt\F]\6sd  
while(l SortUtil.swap(data,l,r); hH8:7i  
return l; Jla ;^X  
} :i+Tf~k{  
Kr`Cr5v  
} [aX'eM q  
GYYk3\r  
改进后的快速排序: jLc4D'  
Y( n# =  
package org.rut.util.algorithm.support; 5'gV_U  
<T JUKznO  
import org.rut.util.algorithm.SortUtil; \M1-  
0}jB/Z_T  
/** ;,n{6`  
* @author treeroot H `Fe |6I&  
* @since 2006-2-2 1QXv}36#3n  
* @version 1.0 <e|I?zI9-  
*/ hb7H- Z2  
public class ImprovedQuickSort implements SortUtil.Sort { 4)ez0[i$X  
zuR!,-W  
private static int MAX_STACK_SIZE=4096; >lxhXYp  
private static int THRESHOLD=10; HjUs}#</  
/* (non-Javadoc) n\&[^Q#b|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CGvU{n,"  
*/ he;;p="!*  
public void sort(int[] data) { DU#6%8~  
int[] stack=new int[MAX_STACK_SIZE]; S !cc%  
*?%DdVrO@  
int top=-1; #WlIH7J8Tc  
int pivot; I:[^><?E  
int pivotIndex,l,r; )xIk#>)  
jD9 ^DzFx  
stack[++top]=0; + |MHiC  
stack[++top]=data.length-1; ]cLO-A  
6}A1^RB+w  
while(top>0){ 0 3kzS ]g  
int j=stack[top--]; a=\r~Z7E  
int i=stack[top--]; OF*m 9  
GL'zs8AKf  
pivotIndex=(i+j)/2; yhg^1l|t,  
pivot=data[pivotIndex]; 0|n1O)>J  
0dA'f0Uy\X  
SortUtil.swap(data,pivotIndex,j); sI/Jhw)  
zl\mBSBx"  
file://partition E\&~S+:Xp  
l=i-1; }-9  
r=j; smW 7zGE  
do{ V9f$zjpw  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); _v:t$k#sN  
SortUtil.swap(data,l,r); |T0jq  
} ZAVjq;bq  
while(l SortUtil.swap(data,l,r); i E>E*!aBg  
SortUtil.swap(data,l,j); e*.l6H/B  
6VpT*,2d~  
if((l-i)>THRESHOLD){ GV'Y'  
stack[++top]=i; <eK F  
stack[++top]=l-1; F Cg{!h  
} ,cD(s(6+  
if((j-l)>THRESHOLD){ > f,G3Ay  
stack[++top]=l+1; 8V@ /h6-e,  
stack[++top]=j; {H{u[XR[z  
} =B_vQJF2  
)*ocX)AE  
} .^0@^%Wi  
file://new InsertSort().sort(data); 0L1NZY^!  
insertSort(data); oF[l<OY4  
} ?]SSmZpk  
/** B B*]" gT  
* @param data wB~Ag$~  
*/ 4`Qu+&4J  
private void insertSort(int[] data) { $Kn{x!,"(  
int temp; 86$9)UI  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 6tBL?'pG  
} C;#vW FE  
} $lmGMljF  
} Ge=+ 0W)&  
raRb K8CQ  
} Y S )Q#fP  
kKwb)i  
归并排序: zI77#AUM  
8TIc;'bRM  
package org.rut.util.algorithm.support; V uZd  
N 0h* |  
import org.rut.util.algorithm.SortUtil; 'N#,,d/G  
H$Om{r1j  
/** R@Ch3l@  
* @author treeroot X}C }  
* @since 2006-2-2 ^Rriu $\  
* @version 1.0 H7!j5^  
*/ A]^RV{P  
public class MergeSort implements SortUtil.Sort{ R,?7|x  
udYk 6  
/* (non-Javadoc) +Zgh[a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R: 8\z0"L*  
*/ nw|ls2   
public void sort(int[] data) { [O92JT:li  
int[] temp=new int[data.length]; G\4h4% a  
mergeSort(data,temp,0,data.length-1); uBp"YX9rx  
} -)_"7}|u5  
t_cNH@^3<3  
private void mergeSort(int[] data,int[] temp,int l,int r){ !*#2~$:  
int mid=(l+r)/2; _s{on/u  
if(l==r) return ; #1c%3KaZ I  
mergeSort(data,temp,l,mid); e7rD,`NiV  
mergeSort(data,temp,mid+1,r); R >1  
for(int i=l;i<=r;i++){ q))r lMo  
temp=data; ^ 'W<|  
} T;jy2|mLo  
int i1=l; *V}T}nK7  
int i2=mid+1; M{:}.H<a  
for(int cur=l;cur<=r;cur++){ _)AX/%^%  
if(i1==mid+1) {T EF#iF  
data[cur]=temp[i2++]; AP*Z0OFE  
else if(i2>r) %DH2]B? 0  
data[cur]=temp[i1++]; @ov*Fh  
else if(temp[i1] data[cur]=temp[i1++]; p2Yc:9r9+A  
else _?Q0yVH;,  
data[cur]=temp[i2++]; 8{QN$Qkn  
} |/rms`YQ  
} )xKZ)SxV  
}U-h^x'  
} Z_^i2eJYT  
K]5@bm  
改进后的归并排序: i#c1 ZC  
rt-^?2c?  
package org.rut.util.algorithm.support; mOm_a9M L  
Ei@w*.3P<  
import org.rut.util.algorithm.SortUtil; 3 sUTdCnNf  
GZ xG!r -  
/** ;A^Ii>`  
* @author treeroot h+ixl#:  
* @since 2006-2-2 x93t.5E6  
* @version 1.0 6@ B_3y  
*/ 7{0;<@  
public class ImprovedMergeSort implements SortUtil.Sort { ?4p\ujc  
l\+^.ezD  
private static final int THRESHOLD = 10; PtP{_9%Dz  
"'Bx<FA  
/* QnHb*4<  
* (non-Javadoc) 3QNu7oo  
* glk-: #  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9eG{"0)  
*/ s.VtmAH  
public void sort(int[] data) { l-?B1gd,l  
int[] temp=new int[data.length]; :2+,?#W  
mergeSort(data,temp,0,data.length-1); }.+{M.[}  
} %9 kOl  
M1UabqQ  
private void mergeSort(int[] data, int[] temp, int l, int r) { @D$^- S6  
int i, j, k; 9@'^}c#  
int mid = (l + r) / 2; D}.Pk>5  
if (l == r) )w3?o#@  
return; =8`!Ph@(  
if ((mid - l) >= THRESHOLD) _[J @w.l(  
mergeSort(data, temp, l, mid); 'IVNqfC)u  
else u`K)dH,  
insertSort(data, l, mid - l + 1); q.xt%`@aA  
if ((r - mid) > THRESHOLD) ~8fy qE$  
mergeSort(data, temp, mid + 1, r); 7sgK+ ip  
else wlSl ~A/s  
insertSort(data, mid + 1, r - mid); gXrXVv<)yw  
qIXo_H&\C  
for (i = l; i <= mid; i++) { Kyn[4Bu!?  
temp = data; F@4TD]E0^  
} ;!RS q'L1  
for (j = 1; j <= r - mid; j++) { V]4g- CS[  
temp[r - j + 1] = data[j + mid]; yiourR)H<  
} uP;qs8  
int a = temp[l]; R ;XG2  
int b = temp[r]; by*?PhfF  
for (i = l, j = r, k = l; k <= r; k++) { V?_:-!NJ(  
if (a < b) { 3 VNPdXsh  
data[k] = temp[i++]; ]'  ck!eG  
a = temp; S_ELZO#7  
} else { c)L1@qdZ  
data[k] = temp[j--]; aHhr_.>X  
b = temp[j]; kfb*|  
} VR5CRNBJ  
} B4uJT~,7>  
} NFYo@kX> G  
E;I'b:U`  
/** 0-s[S  
* @param data {nr}C4]o  
* @param l [Un~]E.'J  
* @param i roiUVisq*  
*/ whoM$  &  
private void insertSort(int[] data, int start, int len) { ( L{>la!  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); )R~l@QBN  
} 7IEG%FY T  
} A(j9T,!  
} oR``Jiob|  
} _lK+/"-l  
aRt`IcZYz  
堆排序: !Eqp,"ts7  
'3<AzR2  
package org.rut.util.algorithm.support; [m*E[0Hu  
G6*P]<  
import org.rut.util.algorithm.SortUtil; H!H&<71-  
4y: pj7h  
/** L4Nn:9b  
* @author treeroot hN#A3FFo L  
* @since 2006-2-2 ftaGu-d%  
* @version 1.0 6}q8%[l|  
*/ 6ct'O**k*&  
public class HeapSort implements SortUtil.Sort{ 'MWu2L!F  
XWuHH;~*L  
/* (non-Javadoc) f!H~BMA+a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w!GPPW(  
*/ )qbjX{GZ7  
public void sort(int[] data) { -gq,^j5,  
MaxHeap h=new MaxHeap(); L lNd97Z  
h.init(data); Tgf\f%,h  
for(int i=0;i h.remove(); `l%)0)T  
System.arraycopy(h.queue,1,data,0,data.length); F"G]afI9+  
} fV>12ici  
Z?@oe-mz  
private static class MaxHeap{ `]T# uP<u  
2#y-3y<G  
void init(int[] data){ Qp?+G~*  
this.queue=new int[data.length+1]; 9/yE\p .  
for(int i=0;i queue[++size]=data; KscugX*x  
fixUp(size); 3EVAB0/$  
} U8||)  +  
} VGe OoS  
$\9M6k'  
private int size=0; [yyL2=7  
$'I-z.GV  
private int[] queue; Dr_ (u<[  
XCP/e p  
public int get() { <3SO1@?  
return queue[1]; =sIkA)"!=  
} A.8[FkiNmD  
8AGP*"gI  
public void remove() { Y|3n^%I  
SortUtil.swap(queue,1,size--); uOv0ut\\G  
fixDown(1); :(?F(Q^  
}  l,lfkm  
file://fixdown CRh.1-  
private void fixDown(int k) { 'ZiTjv ]  
int j; ab!Cu8~v  
while ((j = k << 1) <= size) { i(9 5=t(  
if (j < size %26amp;%26amp; queue[j] j++; SQS PdR+  
if (queue[k]>queue[j]) file://不用交换 VfFXH,j  
break; flXDGoW  
SortUtil.swap(queue,j,k); @OB7TI_/   
k = j; CI8bHY$  
} >Ohh) $  
} d#W>"Cqxqa  
private void fixUp(int k) { wG-lR,glb  
while (k > 1) { `B%IHr  
int j = k >> 1; a3wk#mH  
if (queue[j]>queue[k]) K|ZB!oq  
break; xIb"8,N  
SortUtil.swap(queue,j,k); ->u}b?aF  
k = j; cH7Gb|,M  
}  yh'uH  
} {gkY:$xnrG  
9sId2py]W  
} 8-_\Q2vG  
r9vO(m~  
} rG t/ /6  
JNL9t0 x  
SortUtil: 4~DW7 (  
; `Vbl_"L  
package org.rut.util.algorithm; B]lM69Hz  
{Y6;/".DM  
import org.rut.util.algorithm.support.BubbleSort; nX>HRdC  
import org.rut.util.algorithm.support.HeapSort; u]$e@Vw.  
import org.rut.util.algorithm.support.ImprovedMergeSort; T4e-QEH  
import org.rut.util.algorithm.support.ImprovedQuickSort; 0)0,&@])7  
import org.rut.util.algorithm.support.InsertSort; I%b}qC"5M  
import org.rut.util.algorithm.support.MergeSort; 6E))4 lW  
import org.rut.util.algorithm.support.QuickSort; P:QSr8K  
import org.rut.util.algorithm.support.SelectionSort; <?E~Qc t  
import org.rut.util.algorithm.support.ShellSort; Oe_*(q&  
`%<^$Ng;  
/** ~6!TMVr  
* @author treeroot 5f- eWW]!  
* @since 2006-2-2 tXg>R _\C  
* @version 1.0 ]7/6u.G7R  
*/ mNDd>4%H_  
public class SortUtil { CYH o~VIK  
public final static int INSERT = 1; g54b}vzm  
public final static int BUBBLE = 2; 1R"?X'w  
public final static int SELECTION = 3; H]<@\g*l@P  
public final static int SHELL = 4; >J['so2Bf  
public final static int QUICK = 5; s+@`Z*B5  
public final static int IMPROVED_QUICK = 6; &~&nJr  
public final static int MERGE = 7; av:9kPKm  
public final static int IMPROVED_MERGE = 8; `;v5o4.`  
public final static int HEAP = 9; T@?uA*J  
_@_w6Rh  
public static void sort(int[] data) { 277Am*2  
sort(data, IMPROVED_QUICK); H"vy[/UcR  
} 6_zyPh  
private static String[] name={ .% {4B,d$  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 0w9[Z  
}; )oCb9K:km  
M\L^ Wf9  
private static Sort[] impl=new Sort[]{ ;UPI%DnE]  
new InsertSort(), gQ;1SY!  
new BubbleSort(), v$]eCj'  
new SelectionSort(), 5LVzT1j|  
new ShellSort(), UgC{  
new QuickSort(), gBPYGci2F  
new ImprovedQuickSort(), (-bLP  
new MergeSort(), ? f>pKe  
new ImprovedMergeSort(), 2J1YrHj3  
new HeapSort() G5hh$Nmpi  
}; 1 [D,Mu%E  
1@6FV x  
public static String toString(int algorithm){ FJH'!P\  
return name[algorithm-1]; 2)^gd  
} F\BD7W  
p`mNy o'  
public static void sort(int[] data, int algorithm) { TChKm- x  
impl[algorithm-1].sort(data); V^D!\)#  
} /5&' U!:+  
SMIr@*R  
public static interface Sort { u0?,CQPL  
public void sort(int[] data); t(Sjo8, b  
} :J~sz)n4  
D)){"Q!b  
public static void swap(int[] data, int i, int j) { uNXKUJ V0  
int temp = data; R\ZyS )~l  
data = data[j]; _I A{I  
data[j] = temp; gzd)7np B2  
} W"&Y7("y  
} ITr@;@}c]  
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3+5=?,请输入中文答案:八 正确答案:八