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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。 \Lg4Cx  
插入排序: mIPDF1= )  
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package org.rut.util.algorithm.support; RKM5FXX  
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import org.rut.util.algorithm.SortUtil; JT=ax/%Mo  
/** =-&h@mB;G  
* @author treeroot l|iOdKr h  
* @since 2006-2-2 >_G'o  
* @version 1.0 2E`mbT,v&  
*/ =''b`T$  
public class InsertSort implements SortUtil.Sort{ {oR@'^N  
`M(st%@n  
/* (non-Javadoc) !w@i,zqu  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h%NM%;"H/  
*/ "@|rU4Y  
public void sort(int[] data) { t;-F]  
int temp; X[f)0w%  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); c-!3wvt)  
} B(5>H2  
} ^SW9J^9  
} K4+|K:e  
k*!iUz{]  
} +@H{H2J4  
M{jq6c  
冒泡排序: `%EcQ}Nr  
GV28&!4sS  
package org.rut.util.algorithm.support; p )]x,F  
mdo$d-d&  
import org.rut.util.algorithm.SortUtil; 4sW~7:vU  
cMoJHC,!  
/** -t>"s'kv  
* @author treeroot ]0[ot$Da6  
* @since 2006-2-2 @A<~bod  
* @version 1.0  ls7P$qq  
*/ SU6Aq?`@  
public class BubbleSort implements SortUtil.Sort{ ^HtB!Xc  
Pl-9FLJ  
/* (non-Javadoc) "WO0 rh`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?STO#<a  
*/ MZB}O" r  
public void sort(int[] data) { {`T^&b k  
int temp; ,nGQVb   
for(int i=0;i for(int j=data.length-1;j>i;j--){ TtKKU4yp  
if(data[j] SortUtil.swap(data,j,j-1); ez)Ks`  
} 5tzO=gO[  
} <`NsX 6t  
} 5h Dy62PRr  
} [N}QCy  
<"xqt7f  
} GCX?W`  
!IB}&m  
选择排序: +Z86Qz_  
b`,Sd.2=('  
package org.rut.util.algorithm.support; ' I!/I  
t 7sEY  
import org.rut.util.algorithm.SortUtil; e=eip?p  
K{V.N</  
/** 9?~6{!m_9  
* @author treeroot rLA-q||  
* @since 2006-2-2 a2kAZCQ  
* @version 1.0 c&{= aIe w  
*/ Yx,7e(AI`  
public class SelectionSort implements SortUtil.Sort { G007[|  
<h}x7y?  
/* xU}J6 Tv  
* (non-Javadoc) /L@6Ae  
* yF%e)6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q<ia  
*/ E*fa&G~s )  
public void sort(int[] data) { Kp1 F"!  
int temp; j]]5&u/l  
for (int i = 0; i < data.length; i++) { qDhZC*"9#D  
int lowIndex = i; X8?@Y@  
for (int j = data.length - 1; j > i; j--) { IiE^HgM  
if (data[j] < data[lowIndex]) { @$ lX%p>  
lowIndex = j; g jzWW0C  
} Dhfor+Epy  
}  6pfkv2.}  
SortUtil.swap(data,i,lowIndex); &GvSgdttv  
} ~l{Qz0&  
} W}}ZP];  
{fX~%%c"  
} nZc6 *jiz  
m_BpY9c]5  
Shell排序: 7Kb&BF|Q  
C8)Paop$  
package org.rut.util.algorithm.support; Aayd3Ph0%  
1$6 u  
import org.rut.util.algorithm.SortUtil; {;zHkmx  
o@]n<ZYo  
/** _x#y   
* @author treeroot bAuiMw7!  
* @since 2006-2-2 V[kn'QkWv  
* @version 1.0 0uPcEpIA  
*/ jG)66E*"  
public class ShellSort implements SortUtil.Sort{ Y9vVi]4  
*yo'Nqu  
/* (non-Javadoc) -yg;,nCg  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  yOvV"x]  
*/ DIWyv-  
public void sort(int[] data) { ,j\uvi(Y  
for(int i=data.length/2;i>2;i/=2){ v0tFU!Q%  
for(int j=0;j insertSort(data,j,i); dLwP7#r  
} 4mEJu  
} Gm=&[?}  
insertSort(data,0,1); l @@pXg3  
} ^P/OHuDL  
 w}t}Sh  
/** (x.qyYEoI  
* @param data Fi\) ka\u  
* @param j |ITb1O`_P  
* @param i @~N"MsF3  
*/ gTB|IcOs  
private void insertSort(int[] data, int start, int inc) { ;X0uA?  
int temp; ;:ZD<'+N  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); qQO*:_ezzk  
} \F\7*=xk  
} $=  2[Q  
} hE'7M;  
Eb63O  
} X}C8!LA  
.*>C[^  
快速排序: X.,R%>O}`P  
a|3+AWL%  
package org.rut.util.algorithm.support; >9#) obw  
3pL4 Zhf  
import org.rut.util.algorithm.SortUtil; px+]/P <dX  
,@ f|t&  
/** W$J.B!O  
* @author treeroot _FS #~z'j  
* @since 2006-2-2 nU\.`.39 +  
* @version 1.0 T2)CiR-b  
*/ Us pv^O9_  
public class QuickSort implements SortUtil.Sort{ P c5C*{C  
|E||e10wR  
/* (non-Javadoc) uGW#z_{(n  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B> \q!dX3  
*/ 0oBAJP  
public void sort(int[] data) { 0]]OE+9<c  
quickSort(data,0,data.length-1); ba ,n/yH  
} o_kZ  
private void quickSort(int[] data,int i,int j){ |Zp') JiS  
int pivotIndex=(i+j)/2; |UQ [pas  
file://swap US-f<Wq  
SortUtil.swap(data,pivotIndex,j); EGFPv'De  
x;~@T9.  
int k=partition(data,i-1,j,data[j]); @KLX,1K  
SortUtil.swap(data,k,j); ncOl}\Q9  
if((k-i)>1) quickSort(data,i,k-1); ;:J"- p  
if((j-k)>1) quickSort(data,k+1,j); /7,@q?v  
`_ZbA#R,  
} 48G^$T{  
/** BC1smSlJ  
* @param data ;4/ n~  
* @param i pm i[M)D  
* @param j /~fu,2=7  
* @return erTly2-SJ  
*/ 5xNOIOpDB  
private int partition(int[] data, int l, int r,int pivot) { a[sdYZ  
do{ -O/[c  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); V2@( BliP  
SortUtil.swap(data,l,r); ~ Hj c?*  
} ,kYX|8SO  
while(l SortUtil.swap(data,l,r); bu \(KR$s  
return l; EqIs&){  
} O~ x{p,s U  
;<E?NBV^  
} i??+5o@uTF  
ymqn1ja1  
改进后的快速排序: O<Ay`p5  
! /|B4Yv  
package org.rut.util.algorithm.support; Ag2Q!cq  
H/8u?OC  
import org.rut.util.algorithm.SortUtil; (R RRG;*n#  
6!*zgA5M'  
/**  z{V#_(  
* @author treeroot Iq6EoDoq  
* @since 2006-2-2 Dsv2p~  
* @version 1.0 z\K %  
*/ P#8lO%;  
public class ImprovedQuickSort implements SortUtil.Sort { 8+(wAbp  
Tgi7RAY  
private static int MAX_STACK_SIZE=4096; 78?{;iNv  
private static int THRESHOLD=10; L6!Hv{ijn  
/* (non-Javadoc) F4Cq85#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }20tdD ~  
*/ 2@HmZ!|Q  
public void sort(int[] data) { O]F(vHK\   
int[] stack=new int[MAX_STACK_SIZE]; +x4*T  
4ISIg\:c*  
int top=-1; pXh`o20I  
int pivot; I!K-* AB  
int pivotIndex,l,r; G'nSnw  
0XyPG  
stack[++top]=0; [E2".F3  
stack[++top]=data.length-1; UalwK  
"EWq{l_I5$  
while(top>0){ ;9J6)zg !n  
int j=stack[top--]; 61HJ%  
int i=stack[top--]; 5,|{|/  
JZ-64OT  
pivotIndex=(i+j)/2; G[OJ <px  
pivot=data[pivotIndex]; qk0cf~ gz  
c@4$)68  
SortUtil.swap(data,pivotIndex,j); 2t{Tz}g*  
XZ8]se"C  
file://partition 6KN6SN$  
l=i-1; iP$>/[I  
r=j; &Fk|"f+  
do{ X .K*</(g  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); :inVwc  
SortUtil.swap(data,l,r); |^F$Ta  
} j*1MnP3/8Y  
while(l SortUtil.swap(data,l,r); ^ ~Tn[w W_  
SortUtil.swap(data,l,j); X~\O]  
n4H'FZ  
if((l-i)>THRESHOLD){ =~)rT8+)  
stack[++top]=i; -G=.3 bux  
stack[++top]=l-1; Y2g%{keo  
} QNXS.!\P  
if((j-l)>THRESHOLD){ W3%RB[s-  
stack[++top]=l+1; 0}9jl  
stack[++top]=j; k@[[vj|W  
} p2+K-/}ApP  
i.-2 w6  
} CWd &  
file://new InsertSort().sort(data); Z  6][9o  
insertSort(data); n \&H~0X  
} /WX&UAG  
/** Ru);wzky  
* @param data @bnw$U`+  
*/ &{q'$oF  
private void insertSort(int[] data) { }XCh>LvX  
int temp;  8#1o  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); /Vx EqIK  
} Sm|TDH  
} Upg8t'%{op  
} nmuU*o L  
AOTtAV_e  
} y4&x`|tv  
m-cw5lW  
归并排序: moMNd(p  
9p4SxMMO  
package org.rut.util.algorithm.support; :)+)L@By  
M}=fdH  
import org.rut.util.algorithm.SortUtil; uY3#,  
Uqly|FS &n  
/** Ms+SJ5Lg  
* @author treeroot !rG-[7K  
* @since 2006-2-2 6eNBldP!  
* @version 1.0 3 rLc\rK  
*/ N5xI;UV9'  
public class MergeSort implements SortUtil.Sort{ '68#7Hs.  
B.gEV*@  
/* (non-Javadoc) CT<z1)#@^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) " #U-*Z7  
*/ 'P%&*%  
public void sort(int[] data) { wx2 z9Q  
int[] temp=new int[data.length]; byZj7q5&Q  
mergeSort(data,temp,0,data.length-1); X|R"8cJ  
} m YhDi  
%UV"@I+  
private void mergeSort(int[] data,int[] temp,int l,int r){ FEV Ya#S  
int mid=(l+r)/2; G('UF1F  
if(l==r) return ; Q7mikg=1-  
mergeSort(data,temp,l,mid); PevT`\>  
mergeSort(data,temp,mid+1,r); CXi:?6OG  
for(int i=l;i<=r;i++){ eX0 [C0#  
temp=data; )2:U]d%pk  
} Qv8 =CnuOT  
int i1=l; R+Ug;r-[  
int i2=mid+1; ^Q!A4 qOQ  
for(int cur=l;cur<=r;cur++){ &u (pBr8B  
if(i1==mid+1) 8Qkwg]X  
data[cur]=temp[i2++]; )R"UX:Q>  
else if(i2>r) "VMb1Zhf  
data[cur]=temp[i1++]; b.)jJLWv@  
else if(temp[i1] data[cur]=temp[i1++]; :n?rk/F  
else b~TTz`HZ  
data[cur]=temp[i2++]; A[:(#iR5-E  
} fvA167\  
} pE.TG4  
r8o^8.  
} <anU#bEuQ  
^r{N^  
改进后的归并排序: Nfmr5MU_  
h +9~^<oFl  
package org.rut.util.algorithm.support; }rWg ']  
DMKtTt[}  
import org.rut.util.algorithm.SortUtil; [Z!oVSCZD%  
+9# qNkP  
/** "`* >co6r  
* @author treeroot %e+*&Z',  
* @since 2006-2-2 F$O$Y[  
* @version 1.0 &NI\<C7_Gw  
*/ }CrWmJu0  
public class ImprovedMergeSort implements SortUtil.Sort { i=V2 /W}  
jk%H+<FU`  
private static final int THRESHOLD = 10; k<rJm P{  
6O*lZNN  
/* >.hDt9@4  
* (non-Javadoc) M{YN^ Kk  
* (/!zHq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !d95gq<=>  
*/ \|Y_,fi  
public void sort(int[] data) { 5wv7]F<  
int[] temp=new int[data.length]; !'Hd:oD<  
mergeSort(data,temp,0,data.length-1); =RofC9,  
} m RC   
6E_YUk?KW  
private void mergeSort(int[] data, int[] temp, int l, int r) { qGP}  
int i, j, k; I(Vg  
int mid = (l + r) / 2; j%8 1q  
if (l == r) 9N6 \Ou~  
return; 9)4_@rf%  
if ((mid - l) >= THRESHOLD) -<(RYMk*)  
mergeSort(data, temp, l, mid); h)z2#qfc  
else s&\krW &  
insertSort(data, l, mid - l + 1); | vxmgX)  
if ((r - mid) > THRESHOLD) nB4+*=$E+-  
mergeSort(data, temp, mid + 1, r); #jPn7  
else 5>~D3?IAd  
insertSort(data, mid + 1, r - mid); ? Q"1zcX  
?0lz!Nq'S  
for (i = l; i <= mid; i++) { 9H+Q/Q*-a  
temp = data; }|Bs|$q  
} :b;`.`@KL_  
for (j = 1; j <= r - mid; j++) { zqp>Xw  
temp[r - j + 1] = data[j + mid]; 9d!mGnl  
} }R_Rw:W  
int a = temp[l]; "h8fTB\7S\  
int b = temp[r]; !mUO/6Q hq  
for (i = l, j = r, k = l; k <= r; k++) { A!R'/m'VG  
if (a < b) { Xc L%0%`  
data[k] = temp[i++]; aF>&X-2  
a = temp; o3h>)4  
} else { Q2* ~9QkU  
data[k] = temp[j--]; SEH[6W3  
b = temp[j]; goJ'z|))  
} g~76c.u-  
} j@{dsS: 6  
} .-Dc%ap]  
al7D3J  
/** >qd=lm <,  
* @param data Q&/WVRD  
* @param l rU 1Ri  
* @param i #G=AD/z  
*/ K \.tR  
private void insertSort(int[] data, int start, int len) { 5gb:,+  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); L<6nM ;d  
} F&    
} aP B4!3W  
} {xh5s<uOj  
} )mjGHq 2  
h67{qY[J[  
堆排序: t=fP^bJ  
iU(B#ohW"  
package org.rut.util.algorithm.support; @ 'U`a4  
6Xbf3So  
import org.rut.util.algorithm.SortUtil; ]ZNFrpq  
F@zTz54t  
/** "{zqXM}:C  
* @author treeroot U\M9sTqo  
* @since 2006-2-2 oe!4ng[  
* @version 1.0 d]N_<@tx9  
*/ }c>vk  
public class HeapSort implements SortUtil.Sort{ >P//]nn  
jB l$r{L  
/* (non-Javadoc) `7[!bCl  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $9:  @M.  
*/ ew]G@66  
public void sort(int[] data) { 7nP{a"4_  
MaxHeap h=new MaxHeap(); /vu]ch  
h.init(data); q+cD  
for(int i=0;i h.remove(); (!YJ:,!so  
System.arraycopy(h.queue,1,data,0,data.length); ef/43+F^x  
} &>QxL d#  
}>V=J aG  
private static class MaxHeap{ O,S>6o)?  
v5U'ky :  
void init(int[] data){ Oqq' r"S  
this.queue=new int[data.length+1]; ze21Uj1x*  
for(int i=0;i queue[++size]=data; hMUUnr"8;i  
fixUp(size); -= izu]Fb,  
} $1Zr.ERL|(  
} =%s6QFR  
}w-M .  
private int size=0; R~fk/T?  
YHMJ5IM@.  
private int[] queue; q03+FLEfC  
# s7e/GdKb  
public int get() { %~,Fe7#p  
return queue[1]; )d2:r 07a  
} 0Ng?U+6  
&0fV;%N  
public void remove() { yrl7  
SortUtil.swap(queue,1,size--); e,lLHg  
fixDown(1); dDD5OnWmJ  
} A}&YK,$5ED  
file://fixdown 4=;j.=>0X  
private void fixDown(int k) { ~t ZB1+%)  
int j; oN%zpz;OR  
while ((j = k << 1) <= size) { .yFO] r1aL  
if (j < size %26amp;%26amp; queue[j] j++; E> $_ $'  
if (queue[k]>queue[j]) file://不用交换 l-S0Gn/'X  
break;  |=![J?  
SortUtil.swap(queue,j,k); sLXM$SMBh  
k = j; USHQwn)%  
} \sfc!5G  
} '>n&3`r5  
private void fixUp(int k) { hw*u.46  
while (k > 1) { [Q J  
int j = k >> 1; zufsmY4P  
if (queue[j]>queue[k]) h.KgHMV`  
break; y,6kL2DM  
SortUtil.swap(queue,j,k); *[*q#b$j  
k = j; }xi?vAaTl  
} K<`W>2"  
} _Hfpizm  
5`gVziS!S  
} ^u1Nbo  
m^3j|'mG  
} noEl+5uY  
" a,4E{7  
SortUtil: )N607 Fa-  
` aF8|tc_  
package org.rut.util.algorithm; |@yYM-;6  
 ;Q4,I[?%  
import org.rut.util.algorithm.support.BubbleSort; aDxNAfP  
import org.rut.util.algorithm.support.HeapSort; AXSip  
import org.rut.util.algorithm.support.ImprovedMergeSort; YRr,{[e  
import org.rut.util.algorithm.support.ImprovedQuickSort; 'mTY56Yq  
import org.rut.util.algorithm.support.InsertSort; o?Cc  
import org.rut.util.algorithm.support.MergeSort; 2N]8@a  
import org.rut.util.algorithm.support.QuickSort; .Dl ?a>I  
import org.rut.util.algorithm.support.SelectionSort; p]/[ji  
import org.rut.util.algorithm.support.ShellSort; kWy@wPqms  
4z26a  
/** Y4swMN8Bq  
* @author treeroot $`ptSR  
* @since 2006-2-2 3S2Alx!6  
* @version 1.0 #7}M\\$M  
*/ y'I m/{9U  
public class SortUtil { (_CvN=A  
public final static int INSERT = 1; ^FBu|e AkE  
public final static int BUBBLE = 2; Kg2Du'WQ^  
public final static int SELECTION = 3; c00rq ~<K  
public final static int SHELL = 4; =T&<z_L  
public final static int QUICK = 5; _~ei1 G.R  
public final static int IMPROVED_QUICK = 6; @G=7A;-pv0  
public final static int MERGE = 7; sP eTW*HeR  
public final static int IMPROVED_MERGE = 8; ?A_+G 5  
public final static int HEAP = 9; y 5=r r3%v  
@xa$two  
public static void sort(int[] data) { T]tu#h{ a  
sort(data, IMPROVED_QUICK); VwZ~ntk  
} ;in-)`UC!  
private static String[] name={ :yJ([  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" cfa1"u""e  
}; B@0#*I Rm  
~>lqEa  
private static Sort[] impl=new Sort[]{ "VSx?74q  
new InsertSort(), Ak('4j!*}^  
new BubbleSort(), [u2t1^#Ol  
new SelectionSort(), {=mGXd`x?l  
new ShellSort(), /2c(6h  
new QuickSort(), C4.GtY8,d  
new ImprovedQuickSort(), -WF((s;<#  
new MergeSort(), l"nS +z  
new ImprovedMergeSort(), a|oh Ad  
new HeapSort() <!UnH6J.b  
}; ]H}2|~c  
4 l-Urn Z  
public static String toString(int algorithm){ r hucBm  
return name[algorithm-1]; { AYW C6Y  
} U4K ZPk  
z |~+0  
public static void sort(int[] data, int algorithm) { 0;">ETh=  
impl[algorithm-1].sort(data); #G F.M,O/h  
} FjtS  
a EIz,^3  
public static interface Sort { 42"nbJ  
public void sort(int[] data); a~_JTH4=t  
} *PL&CDu=)  
Y)pop :y t  
public static void swap(int[] data, int i, int j) { ln=fq:  
int temp = data; 1v`|mU}i,  
data = data[j]; 5  >0\=  
data[j] = temp; nYZ6'Iwi'  
} Xnjl {`  
} W&|?8%"l]  
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