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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。 e|r0zw S  
插入排序: 2n`Lg4=  
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package org.rut.util.algorithm.support; ,A5)<}  
]> Y/r-!  
import org.rut.util.algorithm.SortUtil; L{ymI) Y^  
/** XO F1c3'H  
* @author treeroot u.|~$yP.!  
* @since 2006-2-2 EC?Efc+O  
* @version 1.0 5H:@ 8,B  
*/ Q:|w%L*E  
public class InsertSort implements SortUtil.Sort{ "MiD8wX-  
p&K\]l}  
/* (non-Javadoc) /M OnNnV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !1uzX Kb  
*/ [[)_BmS5r  
public void sort(int[] data) { <Jp1A# %p  
int temp; fj'j NE  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); NgB 7?]vu  
} y$tX-9U  
} ;S/7 h6  
} BvSIM%>h  
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} qU[O1bN  
}o9Aa0$*$  
冒泡排序: ]9S`[c$  
\`,xgC9K  
package org.rut.util.algorithm.support; Ca$c;  
RwTzz] M  
import org.rut.util.algorithm.SortUtil; X^@[G8v%  
BZ F,=v  
/** ^i:\@VA:  
* @author treeroot ]R_G{%  
* @since 2006-2-2 cQFR]i  
* @version 1.0 twk&-:'  
*/ H*W):j}8  
public class BubbleSort implements SortUtil.Sort{ |Zq\GA  
xNN@1P[*  
/* (non-Javadoc) hWcTI{v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i.rU&yT%  
*/ z4} %TT@^  
public void sort(int[] data) { hPufzhT  
int temp; D(r:}pyU  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 27#8dV?  
if(data[j] SortUtil.swap(data,j,j-1); h#3m4<w(9  
} |j_`z@7(  
} hE!7RM+Y  
} ]X" / yAn  
} LBX%HGH  
E:VGji7s  
} <uF [,  
_qTpy)+  
选择排序: pX<a2F P  
S>ugRasZ$  
package org.rut.util.algorithm.support; Vf{2dZZ{1  
sS,#0Qt.  
import org.rut.util.algorithm.SortUtil; R.7#zhC`4  
a%~yol0wO7  
/** \OHv|8!EI@  
* @author treeroot $+:(f{Va*  
* @since 2006-2-2 ` X+j2TmS  
* @version 1.0 A'"-m)1P  
*/ L=7rDW)aa  
public class SelectionSort implements SortUtil.Sort { }#aKFcvg  
> x'bZ]gm  
/* =[(1my7  
* (non-Javadoc) mTEVFm  
* =&0U`P$`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _@ i>s,  
*/ AQci,j"  
public void sort(int[] data) { $ly0h W  
int temp; }~*rx7p  
for (int i = 0; i < data.length; i++) { ~+m,im8}  
int lowIndex = i; 9)Yw :  
for (int j = data.length - 1; j > i; j--) { 6D9o08  
if (data[j] < data[lowIndex]) { E8tD)=1  
lowIndex = j; y-cw~kNPP3  
} /{G/|a  
} YhgUCF#  
SortUtil.swap(data,i,lowIndex); d1NE%hg3  
} OKQLv+q5K)  
} KF{a$d  
BQ#jwu0e  
} 98<zCSe\]  
C.E[6$oVc  
Shell排序: oO:LG%q  
31 ] 7z  
package org.rut.util.algorithm.support; 4Vx+[8W  
9U10d&M(  
import org.rut.util.algorithm.SortUtil; YY!!<2_  
9N}W(>  
/** =QiT)9q)  
* @author treeroot l @A"U)A(  
* @since 2006-2-2 nO@+s F  
* @version 1.0 kukaim>K  
*/ d8.ajeN]o  
public class ShellSort implements SortUtil.Sort{ +{xG<Wkltz  
FT_k^CC  
/* (non-Javadoc) b]dxlj} <  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _5h0@^m7y  
*/ EVSK8T,  
public void sort(int[] data) { |!5@xs*T  
for(int i=data.length/2;i>2;i/=2){ 4qBY% 1  
for(int j=0;j insertSort(data,j,i); AijUs*n 2  
} :bw6k  
} 3"B+xbe=  
insertSort(data,0,1); ' C6:e?R  
} U$$3'n  
8D T@h8tA  
/** ?zE<  
* @param data 4[H,3}p9H  
* @param j -wIM0YJ  
* @param i R`7n^,  
*/ c'lIWuL)  
private void insertSort(int[] data, int start, int inc) { B'/Icg.T  
int temp; X)NWX9^;'  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); t>@yv#  
} D'?]yyrf  
} G4"lZM  
} 0nT%Slbih  
ct.Bg)E  
} b.(XS?4o  
T]X{ @_  
快速排序: f<=^ 4a  
s KCGuw(mh  
package org.rut.util.algorithm.support; $Q,n+ /  
n% U9iwJ.  
import org.rut.util.algorithm.SortUtil; UNY@w=]<  
k7b(QADqUU  
/** *p"O*zj  
* @author treeroot _6J<YQK  
* @since 2006-2-2 9H8=eJd  
* @version 1.0 DoTs9w|5  
*/ (>r|j4$  
public class QuickSort implements SortUtil.Sort{ bN4d:0Y  
T/5nu?v  
/* (non-Javadoc) *<CxFy;|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Obg@YIwn  
*/ %g5jY%dg.r  
public void sort(int[] data) { @6[x%j/!bt  
quickSort(data,0,data.length-1); l^BEFk;  
} \)s3b/oap  
private void quickSort(int[] data,int i,int j){ 9OhR4 1B  
int pivotIndex=(i+j)/2; r"1A`89  
file://swap ;HT0w_,  
SortUtil.swap(data,pivotIndex,j); F94V5_[  
L<"k 7)k  
int k=partition(data,i-1,j,data[j]); M;> ha,x  
SortUtil.swap(data,k,j); cnC_#kp  
if((k-i)>1) quickSort(data,i,k-1); {!g?d<*  
if((j-k)>1) quickSort(data,k+1,j); Xv]*;Bq:SK  
hX %s]"  
} +%x^RV}  
/** 4KZSL: A  
* @param data >5df@_'  
* @param i )e#fj+>x)  
* @param j TLX^~W[gOm  
* @return 7:ckq(89  
*/ v7g [Lk  
private int partition(int[] data, int l, int r,int pivot) { h FDze  
do{ dkf}),Z F  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); @<VG8{  
SortUtil.swap(data,l,r); ltP   
} DwTi_8m;  
while(l SortUtil.swap(data,l,r); \v.HG] /u  
return l; _82<| NN:  
} D@2Ya/c  
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} ?TRW"%  
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改进后的快速排序: MyK^i2eD  
-Zttj/K  
package org.rut.util.algorithm.support; G|<]Ma9x  
-fhAtxkg  
import org.rut.util.algorithm.SortUtil; jDFp31_X  
J,6!7a  
/** Bfu/9ad  
* @author treeroot ![qRoYpbg8  
* @since 2006-2-2 fdg[{T4:  
* @version 1.0 XlE$.  
*/ osI- o~#>  
public class ImprovedQuickSort implements SortUtil.Sort { J: L-15  
5X0_+DdeL  
private static int MAX_STACK_SIZE=4096; u2f `|+1^y  
private static int THRESHOLD=10; 4p*?7g_WVH  
/* (non-Javadoc) 32TP Mk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zkuv\kY/Z  
*/ BW+qp3k\  
public void sort(int[] data) { p.qrf7N$  
int[] stack=new int[MAX_STACK_SIZE]; 9 J$Y,Z  
&f$a1#O}dx  
int top=-1; lF)0aDk'h  
int pivot; ojiM2QT}m  
int pivotIndex,l,r; YNuewD  
1VRqz5  
stack[++top]=0; [B.W1 GL!  
stack[++top]=data.length-1; @2QJm  
y-D>xV)n  
while(top>0){ L; @a E[#z  
int j=stack[top--]; F%w\D9+P  
int i=stack[top--]; E `?S!*jm  
&;'w8_K"^  
pivotIndex=(i+j)/2; W,0KBkkp  
pivot=data[pivotIndex]; 8/Lu'rI  
ajf_)G5X P  
SortUtil.swap(data,pivotIndex,j); [^cs~ n4  
hnH)Jy;>  
file://partition Ky =(urAd  
l=i-1;  pb,{$A  
r=j; 4Sd+"3M  
do{ 1Kp?bwh"u  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 0V{>)w!Fo  
SortUtil.swap(data,l,r); $%lHj+(  
} >\N$>"~a  
while(l SortUtil.swap(data,l,r); wY."Lw> 6  
SortUtil.swap(data,l,j); Ubn   
@G^j8Nl+J}  
if((l-i)>THRESHOLD){ :YkDn~@  
stack[++top]=i; M'pY-/.  
stack[++top]=l-1; 7{?lEQ&UE  
} 5%vP~vy_}  
if((j-l)>THRESHOLD){ sE(X:[Am  
stack[++top]=l+1; .D>A'r8U  
stack[++top]=j; \ x>NB  
} }xpe  
g)2m$#T&s  
} Fj[ dO&  
file://new InsertSort().sort(data); 3JwSgcb  
insertSort(data); t[L2'J.5  
} UMnR=~.  
/** iPRJA{$b_  
* @param data ]9!Gg  
*/ G <}7vF  
private void insertSort(int[] data) { XRX7qo(0g  
int temp; /v<e$0~s<  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); h8Dtq5t4  
} ?h>(&H jWV  
} Gl3 `e&7  
} ee__3>H"/  
rd f85%%7  
} s.k`];wo  
_rWTw+ L  
归并排序: (7 ]\p  
{Tjtj@-  
package org.rut.util.algorithm.support; *X"F:7  
2n"*)3Qj  
import org.rut.util.algorithm.SortUtil; X.r!q1_c  
Qe' PAN=B  
/** 5d!z<{`  
* @author treeroot fb;hf:B:  
* @since 2006-2-2 U O{xpY  
* @version 1.0 d1C/u@8^  
*/ )%-\hl]  
public class MergeSort implements SortUtil.Sort{ 4cv|ok8P  
]lG_rGw  
/* (non-Javadoc)  xLGTnMYd  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RMs1{64:  
*/ A `H]q5d  
public void sort(int[] data) { T`0`]z!~  
int[] temp=new int[data.length]; Mz% d_  
mergeSort(data,temp,0,data.length-1); ]xVL11p  
} SO8|]Fk  
*o2_EqXL*  
private void mergeSort(int[] data,int[] temp,int l,int r){ GtGyY0  
int mid=(l+r)/2; J}93u(T5  
if(l==r) return ; "1pZzad  
mergeSort(data,temp,l,mid); b W`)CWd  
mergeSort(data,temp,mid+1,r); `s|\" @2  
for(int i=l;i<=r;i++){ k -t,y|N  
temp=data; f(zuRM^5  
} >ZOZv  
int i1=l; ;9- 4J  
int i2=mid+1; 's%ct}y\J  
for(int cur=l;cur<=r;cur++){ ir1RAmt%  
if(i1==mid+1) Jq=>H@il  
data[cur]=temp[i2++]; Qcy+ {j]  
else if(i2>r) ;_;H(%uY  
data[cur]=temp[i1++]; NEjB jLJZ  
else if(temp[i1] data[cur]=temp[i1++]; QRn:=J%W W  
else ^{:[^$f:l  
data[cur]=temp[i2++]; s^x , S  
} *jqPKK/  
} '!2  
'j =PbA  
} 4'u|L&ow  
.x9nWa  
改进后的归并排序: |7 W6I$Xl  
>O[^\H!\  
package org.rut.util.algorithm.support; >goAf`sqo  
V0wC@?  
import org.rut.util.algorithm.SortUtil; .(.G`aKnF  
g^|_X1{  
/** DNTRLIKa  
* @author treeroot vzT6G/  
* @since 2006-2-2 '@1Qx~*]e  
* @version 1.0 q'U-{~q%  
*/ 'e8d["N  
public class ImprovedMergeSort implements SortUtil.Sort { @a{v>)  
S@rsQ@PA  
private static final int THRESHOLD = 10; FPM}:c4  
l.LFlwt  
/* !&:.Uh  
* (non-Javadoc) +[go7A$5  
* j^R~ Lt4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W(3~F2  
*/ )SO1P6  
public void sort(int[] data) { V3Rnr8  
int[] temp=new int[data.length];   ]q\=  
mergeSort(data,temp,0,data.length-1); X/C54%T ~  
} 1pBsr(  
PT5ni6  
private void mergeSort(int[] data, int[] temp, int l, int r) { fn"jYSy  
int i, j, k; ~O3uje_  
int mid = (l + r) / 2; A_$Mt~qKi^  
if (l == r) d4rJ ?qw  
return; _}%# Yz  
if ((mid - l) >= THRESHOLD) */@bNT9BgO  
mergeSort(data, temp, l, mid); ^IegR>  
else [!|d[  
insertSort(data, l, mid - l + 1); !t [%'!v  
if ((r - mid) > THRESHOLD) BsG[#4KM:  
mergeSort(data, temp, mid + 1, r); KARQKFp!C>  
else LZ<( :S  
insertSort(data, mid + 1, r - mid); ur_"m+  
/Gu2@m[r  
for (i = l; i <= mid; i++) { )6S}O* 1  
temp = data; N4JL.(m){I  
} (VF4]  
for (j = 1; j <= r - mid; j++) { jjlCi<9CQ^  
temp[r - j + 1] = data[j + mid]; ;`Ch2b1+  
} $/sZYsN~T  
int a = temp[l]; Q\th8/ /  
int b = temp[r]; zAdVJ58H  
for (i = l, j = r, k = l; k <= r; k++) { ? Gu_UW  
if (a < b) { _ O71r}4  
data[k] = temp[i++]; 2ZFK jj  
a = temp; T<~[vjA  
} else { iZqFVr&JF  
data[k] = temp[j--]; LFry?HO,D  
b = temp[j]; Rhxm)5+  
} loVvr"&g  
} XzwQ,+IAr  
} BN> $LL  
AG!a=ufc0  
/** \7?MUa.4  
* @param data AZ@Zo'  
* @param l YedipYG9;  
* @param i q|_ 5@Ly  
*/ !ES#::;z?  
private void insertSort(int[] data, int start, int len) { LR?#H)$  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); wEn&zZjx  
} 9w<_XXQ  
} ]d;/6R+Vs  
} I&@@v\$*  
} \:^n-D*fX  
FbT&w4Um=  
堆排序: ].+G-<.:  
F n Rxc  
package org.rut.util.algorithm.support; _ r)hr7  
,,-3p#P bw  
import org.rut.util.algorithm.SortUtil; p{QKj3ov  
u>Kvub  
/** "k@/Z7=  
* @author treeroot J A2}  
* @since 2006-2-2 ^bw~$*"j#  
* @version 1.0 vX)Y%I  
*/ -5*;J&.  
public class HeapSort implements SortUtil.Sort{ ^x#RUv  
KTREOOu .t  
/* (non-Javadoc) S~9kp?kR$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w3hL.Z,kV  
*/ |?Uc:VFF  
public void sort(int[] data) { B_G7F[/K  
MaxHeap h=new MaxHeap(); ZuV  
h.init(data); \) ONy9  
for(int i=0;i h.remove(); ?UZ yu 4O%  
System.arraycopy(h.queue,1,data,0,data.length); GM92yi!8  
} D#AxgF_He  
3W WxpTU  
private static class MaxHeap{ 1j-i nj`  
h$h`XBVZe;  
void init(int[] data){ /]>{"sS(  
this.queue=new int[data.length+1]; I>zn$d*0  
for(int i=0;i queue[++size]=data; E8 )*HOT_T  
fixUp(size); 30-w TcG  
} fxa^SV   
} / 1GZN *I  
a{6|[a R  
private int size=0; AFA*_9Ut  
aM1JG$+7G  
private int[] queue; U7'oI;C$e  
wB GxJ\+M  
public int get() { u _^=]K;  
return queue[1]; N%i<DsK.u6  
} 9~ af\G  
{u][q &n  
public void remove() { id9T[^h  
SortUtil.swap(queue,1,size--); Q)dns)_x  
fixDown(1); f%l#g]]  
} : s3Vl  
file://fixdown 9e6{(  
private void fixDown(int k) { mw%_ yDZ{  
int j; >U.uRq  
while ((j = k << 1) <= size) { 8#AXK{  
if (j < size %26amp;%26amp; queue[j] j++; PUo&>  
if (queue[k]>queue[j]) file://不用交换 . 2Q/D?a  
break; q+Q)IVaU81  
SortUtil.swap(queue,j,k); ,g.=vQm:?  
k = j; h2snGN/{Hb  
} k9?+9bExXA  
} 40ZB;j$l  
private void fixUp(int k) { c *noH[  
while (k > 1) { arrcHf 4O  
int j = k >> 1; o%7yhCY  
if (queue[j]>queue[k]) D/>5\da+y  
break; a-=apD1RvG  
SortUtil.swap(queue,j,k); w+D5a VJ  
k = j; $cCB%}  
} q>Y[.c-  
} ddxv.kIj.  
6U]7V  
} 6<6_W#  
iDN,}:<V  
} Grv|Wuli  
m#p^'}]!;  
SortUtil: D.f=!rT7E7  
b@Cvs4  
package org.rut.util.algorithm; i>}z$'X  
85]UrwlA4  
import org.rut.util.algorithm.support.BubbleSort; p:))ne:7  
import org.rut.util.algorithm.support.HeapSort; g#*N@83C  
import org.rut.util.algorithm.support.ImprovedMergeSort; !9NAm?Fw  
import org.rut.util.algorithm.support.ImprovedQuickSort; WDR!e2G  
import org.rut.util.algorithm.support.InsertSort; nrS_t y  
import org.rut.util.algorithm.support.MergeSort; G}*B`m  
import org.rut.util.algorithm.support.QuickSort; :4d7%q  
import org.rut.util.algorithm.support.SelectionSort; 8&bj7w,K  
import org.rut.util.algorithm.support.ShellSort; ,j<"~"] =  
1C{n\_hR  
/** b*i+uV?  
* @author treeroot &kBs'P8>  
* @since 2006-2-2 !8].Z"5J  
* @version 1.0  =%`"  
*/ bHM .&4G  
public class SortUtil { yuB BO:\.  
public final static int INSERT = 1; 6iC:l%|u  
public final static int BUBBLE = 2; h'+ swPh  
public final static int SELECTION = 3; i :72FVo  
public final static int SHELL = 4; 8!fw Xm  
public final static int QUICK = 5; ,5 ,4Qf7  
public final static int IMPROVED_QUICK = 6; Tc :`TE=2  
public final static int MERGE = 7; AJ mzg  
public final static int IMPROVED_MERGE = 8; :W"ITY(  
public final static int HEAP = 9; 2)YLs5>W%  
5**xU+&  
public static void sort(int[] data) { xl$ Qw'  
sort(data, IMPROVED_QUICK); u1l#k60  
} 3-5lO#&#  
private static String[] name={ Heu@{t.[!D  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" xh$[E&2u  
}; b;vO`  
YzqhFFaj.  
private static Sort[] impl=new Sort[]{  V Euv  
new InsertSort(), D6pk !mS  
new BubbleSort(), Z)~ 2{)  
new SelectionSort(), _JS'~ JO3{  
new ShellSort(), &V$R@~x  
new QuickSort(), $}@l l^  
new ImprovedQuickSort(), Yc}b&  
new MergeSort(), \T?O.  
new ImprovedMergeSort(), ;Xns9  
new HeapSort() tti.-  
}; $6N. ykJ  
v)06`G  
public static String toString(int algorithm){ l3,|r QD  
return name[algorithm-1]; 3 0Z;}<)9  
} vEkz 5$  
rcOmpgew  
public static void sort(int[] data, int algorithm) { ~ p.23G]x  
impl[algorithm-1].sort(data); R\^tr  
} [(XKqiSV  
Ue7~rPdlR  
public static interface Sort { '4iu0ie>D  
public void sort(int[] data); Jx]`!dP3  
} 'E9jv4E$n  
i \~4W$4I  
public static void swap(int[] data, int i, int j) { o9CB ,c7]  
int temp = data; (DU{o\=  
data = data[j]; _ i8}ld-  
data[j] = temp; 9Z=Bs)-y.  
} Y`wi=(  
} WG,{:|!E  
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