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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。 6*q1%rs:w  
插入排序: K)7T]z`  
Mh.1KI[t  
package org.rut.util.algorithm.support; 10Ik_L='  
25$_tZP AI  
import org.rut.util.algorithm.SortUtil; G?1GkR  
/** 5@w6pda  
* @author treeroot &*=!B9OBI  
* @since 2006-2-2 h|CZ ~  
* @version 1.0 oAQQ OtpZN  
*/ hul,Yd) Z  
public class InsertSort implements SortUtil.Sort{ / \w4k  
f^ui Zb  
/* (non-Javadoc) $^ee~v;m4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tDX& ~1s  
*/ pj$JA  
public void sort(int[] data) { dFy$w=  
int temp; s5nw<V9$]  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); -3{Q`@F  
} )!2@v@SQ  
} lFnls6dp  
} EAGvP&~P  
hv|a8=U!R  
} ny5 P*yWEh  
[iub}e0  
冒泡排序: 9|1msg4  
$r/$aq=K  
package org.rut.util.algorithm.support; im2mA8OH  
#'_#t/u  
import org.rut.util.algorithm.SortUtil; .| 4P :r  
4v\HaOk  
/** "?NDN4l*  
* @author treeroot /iU<\+ H  
* @since 2006-2-2 TTz=*t+D  
* @version 1.0 ]y_ :+SHc  
*/ @7twe;07r  
public class BubbleSort implements SortUtil.Sort{ -tj#BEC[H(  
k$3pmy*  
/* (non-Javadoc) Z7a@$n3h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WNGX`V,d  
*/ WHdMP  
public void sort(int[] data) { !9;m~T7.  
int temp; ~)U50. CH  
for(int i=0;i for(int j=data.length-1;j>i;j--){ &Hb%Q! ^Kb  
if(data[j] SortUtil.swap(data,j,j-1); Z<nNk.G  
} lYG`)#T  
} 7g\v (P  
} o$*(N  
} <=M5)#  
3 7BSJ   
} E(~7NRRm  
4&mY-N7A  
选择排序: 3Z XAAV  
LZV-E=`  
package org.rut.util.algorithm.support; r1L@p[>  
lL)f-8DX  
import org.rut.util.algorithm.SortUtil; \sNgs#{7E7  
r mX*s} B  
/** Hd~g\  
* @author treeroot }dkXRce*  
* @since 2006-2-2 Y) sB]!hx  
* @version 1.0 ):$KM{X  
*/ OcT Wq  
public class SelectionSort implements SortUtil.Sort { >v+1 v  
[bhKL5l  
/* "iSY;y o  
* (non-Javadoc) =X R~I  
* hVz yvpw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @_ %RQO_X  
*/ nwFBuP<LR  
public void sort(int[] data) { MQoA\  
int temp; }~ D WB"  
for (int i = 0; i < data.length; i++) { qp})4XTv  
int lowIndex = i; &-=~8  
for (int j = data.length - 1; j > i; j--) { JwSF}kNs}  
if (data[j] < data[lowIndex]) { hxoajexU  
lowIndex = j; pP| @Z{7d`  
} oco,sxT  
} z!g$#hmL>  
SortUtil.swap(data,i,lowIndex); mw"FQ?bJ  
} pJHdY)Cz  
} eFiG:LS7  
X:i?gRy"  
} cW%)C.M  
wH~A> 4*(  
Shell排序: <m-(B"F X  
7Eyi~jes  
package org.rut.util.algorithm.support; 2I B{FO/  
)> ZT{eF  
import org.rut.util.algorithm.SortUtil; n41#  
d5'Q 1"{  
/** syX?O'xJ  
* @author treeroot DTezG':  
* @since 2006-2-2 ~+\=X`y  
* @version 1.0 H$I~Vz[\yb  
*/ r2RJb6  
public class ShellSort implements SortUtil.Sort{ +f/ I>9G  
b}qfOgd5  
/* (non-Javadoc) IBa0O|*6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MLd; UHU  
*/ \IL)~5d  
public void sort(int[] data) { |S8$NI2  
for(int i=data.length/2;i>2;i/=2){ :!aLa}`@  
for(int j=0;j insertSort(data,j,i); fI`Ez!w0  
} IWv(G Qx  
} !aT:0m$:9c  
insertSort(data,0,1); nah?V" ?Y  
} ,WyEwc]  
p/Ul[7A4e  
/** KU8,8:yY  
* @param data SJiQg-+<Uf  
* @param j p"0#G&-  
* @param i 1 uU$V =  
*/ }b2YX+/e$f  
private void insertSort(int[] data, int start, int inc) { |+Wn5iT  
int temp; [c B^6v  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); `3\aX|4@  
} 2K:A4)jZ  
} AS;Sz/YP  
} N@|<3R!N*e  
[<XYU,{R  
} r?DCR\Jq  
'l'3&.{Yfk  
快速排序: xNIrmqm5]  
A+l(ew5Lw$  
package org.rut.util.algorithm.support; T,!EL +o4  
FJ0I&FyWs  
import org.rut.util.algorithm.SortUtil; Jr5S8 c|"  
EDnNS  
/** z6`0Uv~  
* @author treeroot &2W"4SE]6  
* @since 2006-2-2 V?EX`2S  
* @version 1.0 DdR0u0JH0  
*/ UwUHB~<oE  
public class QuickSort implements SortUtil.Sort{ Zn9u&!T&  
Wc@ ,#v  
/* (non-Javadoc) h7Uj "qH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?s2-iuMPd  
*/ T<*)Cdid  
public void sort(int[] data) { 94B%_  
quickSort(data,0,data.length-1); KS*,'hvY  
} 5t%8y!s  
private void quickSort(int[] data,int i,int j){ Fip 5vrD  
int pivotIndex=(i+j)/2; l,o'J%<%  
file://swap 1m5l((d  
SortUtil.swap(data,pivotIndex,j); Ey7zb#/<!  
WWp MuB_G  
int k=partition(data,i-1,j,data[j]); qt L]x -O  
SortUtil.swap(data,k,j); y[b 8rv  
if((k-i)>1) quickSort(data,i,k-1); Q"I(3 tp9[  
if((j-k)>1) quickSort(data,k+1,j); n3p@duC4  
=w3A{h"^  
} 5 tKgm/  
/** O|t>.<T?  
* @param data IR${a)  
* @param i aL:|Dr3SX  
* @param j $I9&cNPv  
* @return Cf(WO-F^  
*/ # `^nmC/F  
private int partition(int[] data, int l, int r,int pivot) { cAN!5?D\  
do{ :E-$:\V0}k  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); H4ie$/[$8  
SortUtil.swap(data,l,r); d92Z;FWb  
} eKOEOm+  
while(l SortUtil.swap(data,l,r); uF<34  
return l; [)V~U?  
} l 73% y  
H~yHSm 3  
} /xUF@%rT  
Q\4tzb]  
改进后的快速排序: {}s/p9F4  
A l?%[-u  
package org.rut.util.algorithm.support; AE:(:U\  
iZG-ca  
import org.rut.util.algorithm.SortUtil; g-K;J4 K%  
_. 9 5>`  
/** dU3A:uS^  
* @author treeroot T^4 dHG-(  
* @since 2006-2-2 ?7fqWlB  
* @version 1.0 4~Qnhv7  
*/ CcUF)$kz  
public class ImprovedQuickSort implements SortUtil.Sort { ;i[JCNiS\  
2-@)'6"n  
private static int MAX_STACK_SIZE=4096; z%E(o%l8  
private static int THRESHOLD=10; Tw';;euw  
/* (non-Javadoc) ZbC$Fk,,I&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^N^G?{EV/#  
*/ sUlf4<_zW  
public void sort(int[] data) { (m'-1wX.  
int[] stack=new int[MAX_STACK_SIZE]; #HV5M1mb  
)n)AmNpq   
int top=-1; X{x(p  
int pivot; ;h1hz^Wq  
int pivotIndex,l,r; ou-#+Sdd  
,marNG  
stack[++top]=0; ZP~H!  
stack[++top]=data.length-1; ZV--d'YiEm  
sgO au\E  
while(top>0){ XMS:F]HN  
int j=stack[top--]; no8\Oees  
int i=stack[top--]; d0B`5#4  
bit|L7*14  
pivotIndex=(i+j)/2; /Pe xtj<  
pivot=data[pivotIndex]; ueJ^Q,-t  
Ug+ K:YUq  
SortUtil.swap(data,pivotIndex,j); ]){ZL  
w4P;Z-Cd  
file://partition I8! .n  
l=i-1; GZi`jp  
r=j; ?lkB{-%rQ  
do{ @2T8H  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); EPJ>@A>;D  
SortUtil.swap(data,l,r); `V9bd}M%~;  
} H<|}p Z  
while(l SortUtil.swap(data,l,r); S"*k#ao  
SortUtil.swap(data,l,j); j1`<+YT<#  
`^Ll@Cx"  
if((l-i)>THRESHOLD){ %l8!p'a  
stack[++top]=i; LBq2({="  
stack[++top]=l-1; ftpPrtaP  
} z00X ?F  
if((j-l)>THRESHOLD){ ~IYR&GEaUG  
stack[++top]=l+1; VHPqEaR  
stack[++top]=j; eGT&&Y  
} kBqgz| jE%  
^1~lnD~0  
} b_`h2dUq  
file://new InsertSort().sort(data); kcUn GiP  
insertSort(data); k.b=EX|  
} %~:\f#6  
/** LCSvw  
* @param data WyOav6/*K^  
*/ 1n<4yfJ  
private void insertSort(int[] data) { 8o+:|V~X  
int temp; hdWVvN  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 8?8V;   
} <lR:^M[v5<  
} {J)%6eL?  
} 2OpA1$n6  
CKH mJ]=  
} x"sbm  
D7nK"]HG;l  
归并排序: /fUdb=!Z  
3|!3R'g/ >  
package org.rut.util.algorithm.support; EC5 = 2w<  
Iu P~Vt{m  
import org.rut.util.algorithm.SortUtil; ?{aC-3VAT  
uDND o  
/** mKu,7nMvF  
* @author treeroot -BP10-V  
* @since 2006-2-2 Ms+ekY)  
* @version 1.0 $1B?@~&  
*/ 0R? @JC  
public class MergeSort implements SortUtil.Sort{ x*:VE57,z  
EUs9BJFP  
/* (non-Javadoc) :l"B NT[/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KDb j C'3  
*/ "Y^j=?1k  
public void sort(int[] data) { i7- i!`<  
int[] temp=new int[data.length]; eCR^$z=c  
mergeSort(data,temp,0,data.length-1); r+m.! +  
} {St-  
U2?R&c;b  
private void mergeSort(int[] data,int[] temp,int l,int r){ [-[59 H[6)  
int mid=(l+r)/2; [K,P)V>K  
if(l==r) return ; }F0<8L6%  
mergeSort(data,temp,l,mid); m8PS84."]M  
mergeSort(data,temp,mid+1,r); lTu& 9)  
for(int i=l;i<=r;i++){ ?\8  
temp=data; =PY{Elf  
} T16gq-h'  
int i1=l; ;_SSR8uHv  
int i2=mid+1; ]e),#_M  
for(int cur=l;cur<=r;cur++){ "p3<-06  
if(i1==mid+1) %y9sC1T  
data[cur]=temp[i2++]; g_{N^wS  
else if(i2>r) 6)0.q|Q  
data[cur]=temp[i1++]; '*L6@e#U  
else if(temp[i1] data[cur]=temp[i1++]; M.,DXEZT  
else l'q%bi=f  
data[cur]=temp[i2++]; sgP{A}4 W  
} hDTC~~J/  
} .]h/M,xg  
W/\VpD) ?;  
} Z8Ig,  
-5  
改进后的归并排序: @@^iN~uf  
_f";zd  
package org.rut.util.algorithm.support; pTi7Xy!Cw  
T0dD:sN  
import org.rut.util.algorithm.SortUtil; ~n@rX=Y)]0  
z H-a%$5  
/** 'WhJ}Uo\  
* @author treeroot O'IU1sU  
* @since 2006-2-2 Q<u?BA/  
* @version 1.0 :8eI_X  
*/ sM MtU@<x  
public class ImprovedMergeSort implements SortUtil.Sort { x5MS#c!7  
zMA;1Na  
private static final int THRESHOLD = 10; e`b#,=  
E"VF BKB  
/* J;Z2<x/H  
* (non-Javadoc) O<Q8%Az  
* &kzysv-_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M1WD^?tKQ.  
*/ z]rr Q=dAA  
public void sort(int[] data) { .B<Bqr@?8  
int[] temp=new int[data.length]; +@^);b6  
mergeSort(data,temp,0,data.length-1); l 3p :}A  
} ~Z/,o)  
Q;VuoHj!  
private void mergeSort(int[] data, int[] temp, int l, int r) { o/7u7BQl2  
int i, j, k; +'c+X^_  
int mid = (l + r) / 2; >Y8\f:KQ  
if (l == r) uarfH]T{  
return; xE@/8h  
if ((mid - l) >= THRESHOLD) So!=uYX  
mergeSort(data, temp, l, mid); gZ^Qt.6Z  
else QPB,B>Z  
insertSort(data, l, mid - l + 1); u#EcR}=]  
if ((r - mid) > THRESHOLD) XEA5A.uc  
mergeSort(data, temp, mid + 1, r); cQhr{W,Un  
else B%uY/Mwz$  
insertSort(data, mid + 1, r - mid); k*)sz  
YhV<.2^k  
for (i = l; i <= mid; i++) { "g5{NjimY  
temp = data; F<b'{qf"  
} ':;k<(<-  
for (j = 1; j <= r - mid; j++) { tgG*k$8z  
temp[r - j + 1] = data[j + mid]; m=l'9j"D  
} K [DpH&  
int a = temp[l]; $4xSI"+M%  
int b = temp[r]; aA#79LS  
for (i = l, j = r, k = l; k <= r; k++) { {,sqUq (  
if (a < b) { AcuF0KWw/  
data[k] = temp[i++]; tjFX(;^[  
a = temp; V>T?'GbS  
} else { ~ C%I'z'  
data[k] = temp[j--]; nI]EfHU  
b = temp[j]; <7Pp98si,u  
} \fTQNF  
} !\4B.  
} ?nW>' z  
T#-;>@a}  
/** la+Cra&xL  
* @param data h97#(_wV>  
* @param l 6qZ\^ U  
* @param i A811VL^  
*/ ErNYiYLi]  
private void insertSort(int[] data, int start, int len) { Tp;W4]'a*:  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); A_9^S!  
} ]S&ki}i&  
} Su,:f_If,  
} !-7n69:G  
} i WD|F-  
Z,#H\1v3lB  
堆排序: 0i_:J  
klJ21j0Bb2  
package org.rut.util.algorithm.support; rT[qh+KWe  
2.z-&lFBZ  
import org.rut.util.algorithm.SortUtil; qMJJBl  
 viAAb  
/** yV8J-YdsG  
* @author treeroot vO1; ;  
* @since 2006-2-2 6`CRT TJ7  
* @version 1.0 EWD^=VITL  
*/ _F%`7j  
public class HeapSort implements SortUtil.Sort{ 4c< s"2F  
#3qeRl  
/* (non-Javadoc) nFn!6,>E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z;S-Q,  
*/ 3>1^$0iq  
public void sort(int[] data) { Y/.C+wW2  
MaxHeap h=new MaxHeap(); p?Azn>qBa  
h.init(data); lNL=Yu2p_  
for(int i=0;i h.remove(); AVpg  
System.arraycopy(h.queue,1,data,0,data.length); \Vf:/9^  
} g&FTX>wX  
g.Xk6"kO  
private static class MaxHeap{ %)r ~GCd  
r+FEgSDa]  
void init(int[] data){ Gc|)4c  
this.queue=new int[data.length+1]; mtv8Bm=<  
for(int i=0;i queue[++size]=data; @[3c1B6K  
fixUp(size); tNT Sy =  
} YGyv)\  
} ps 3 )d  
k|)fl l  
private int size=0; ?A3L8^tR  
%rptI$^*X  
private int[] queue; _f[Q\gK  
XH!#_jy  
public int get() { KR aL+A  
return queue[1]; .ImaM  
} cFL~< [>_  
ZkbE&7Z  
public void remove() { 8v;^jo>ug  
SortUtil.swap(queue,1,size--); |Ghk8 WA  
fixDown(1); Q6Gw!!Z5EA  
} zi-_l  
file://fixdown `} PYltW  
private void fixDown(int k) { 7s(tAbPdB  
int j; /WTEz\k  
while ((j = k << 1) <= size) { O]u'7nO{{  
if (j < size %26amp;%26amp; queue[j] j++; "Q.*  
if (queue[k]>queue[j]) file://不用交换 O_:l;D#i  
break; X .t4;  
SortUtil.swap(queue,j,k); q?(] Y*  
k = j; Yb+A{`  
} OT{"C"%5t  
} *1dDs^D#|  
private void fixUp(int k) { ~sk p}g]  
while (k > 1) { v=N?(6T  
int j = k >> 1; GDxv2^4  
if (queue[j]>queue[k]) A8Ju+  
break; glMHT,  
SortUtil.swap(queue,j,k); Ha@; Sz<R  
k = j; T`EV uRJ  
} iQ/~?'PB  
} I'uwJy_I\  
Z4] n<~o  
} 5}#wp4U  
,S-h~x  
} \Rny*px  
(&:gD4.  
SortUtil: dVQ[@u1,  
X06Lr!-%  
package org.rut.util.algorithm; I_J&>}V'  
[*',pG  
import org.rut.util.algorithm.support.BubbleSort; BR2Gb~#T  
import org.rut.util.algorithm.support.HeapSort; po*G`b;v  
import org.rut.util.algorithm.support.ImprovedMergeSort; I^ ?tF'E  
import org.rut.util.algorithm.support.ImprovedQuickSort; kU<t~+  
import org.rut.util.algorithm.support.InsertSort; l[}4 X/  
import org.rut.util.algorithm.support.MergeSort; c2npma]DZ  
import org.rut.util.algorithm.support.QuickSort; tq3_az ~1  
import org.rut.util.algorithm.support.SelectionSort; ;m(iKwDt  
import org.rut.util.algorithm.support.ShellSort; sl]< A[jR  
E#k{<LYI  
/** MYAt4cHc2  
* @author treeroot w_(3{P[Iz  
* @since 2006-2-2 wX,V:QE  
* @version 1.0 YFO{i-*q  
*/ YT\@fgBt  
public class SortUtil { g$nS6w|5H  
public final static int INSERT = 1; ?E([Nc0T  
public final static int BUBBLE = 2; P\jGyS j  
public final static int SELECTION = 3; JVE\{ e)  
public final static int SHELL = 4; & LE5' .s  
public final static int QUICK = 5; &R94xh%@(  
public final static int IMPROVED_QUICK = 6; &|hK79D  
public final static int MERGE = 7; :?t~|7O:  
public final static int IMPROVED_MERGE = 8; 2c9?,Le/;  
public final static int HEAP = 9; ]b4WfIu  
*M.xVUPr  
public static void sort(int[] data) { 4%(Ji  
sort(data, IMPROVED_QUICK); fj_23{,/"g  
} {7NGfzwp;6  
private static String[] name={ wcGK *sWG-  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" S#/%#k103  
}; *pKTJP  
P49\A^5S!  
private static Sort[] impl=new Sort[]{ @+u>rS|IB  
new InsertSort(), d ]P~  
new BubbleSort(), &k }f"TX2  
new SelectionSort(), "s+4!,k  
new ShellSort(), r"7n2   
new QuickSort(), 4DA34m(  
new ImprovedQuickSort(), b9.M'P\  
new MergeSort(), 5~*)3z^V  
new ImprovedMergeSort(), pCIzpEsRs  
new HeapSort() %$!3Pbu i  
}; COrk (V  
Rr )+M3'  
public static String toString(int algorithm){ Jz@~$L  
return name[algorithm-1]; ?8b19DMK6  
} !|cg=  
GtA`0B  
public static void sort(int[] data, int algorithm) { P?54"$b  
impl[algorithm-1].sort(data); +EETo):  
} FcDS*ZEk!  
8t-GsjHb  
public static interface Sort { ',+yD9 @  
public void sort(int[] data); BrV{X&>[i  
} Z~5) )5Ye;  
xUo6~9s7  
public static void swap(int[] data, int i, int j) { m~=~DMj  
int temp = data; $<}c[Nm  
data = data[j]; #~u0R>=  
data[j] = temp; LFp "Waiv  
} ks '>?Dw  
} (Fv tL*  
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