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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。 $&C(oh$:  
插入排序: ob] lCX)  
X]yERaJ,i  
package org.rut.util.algorithm.support; ILi5WuOYX  
4v|/+J6G  
import org.rut.util.algorithm.SortUtil; Ke ?uE  
/** AIm$in`P  
* @author treeroot @"I#b99  
* @since 2006-2-2 gr 5]5u  
* @version 1.0 2*citB{  
*/ mU=6"A0 U  
public class InsertSort implements SortUtil.Sort{ @1F'V'  
S(J\<)b  
/* (non-Javadoc) x}.d`=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^2r}_ AX  
*/ IMGqJc,7  
public void sort(int[] data) { >'6GcnEb4.  
int temp; z9ShP&^4[  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 4*vas]  
} ,0Zn hS)kq  
} -WUYE  
} n r>{ uTa  
tHtV[We.:  
} y<`?@(0$  
q.MVF]  
冒泡排序: r.W,-%=bL  
rh`.$/^  
package org.rut.util.algorithm.support; ?4ILl>*  
B#aH\$_U  
import org.rut.util.algorithm.SortUtil; h_~|O [5|)  
Z va  
/** &^IcL!t[  
* @author treeroot EB>B,#  
* @since 2006-2-2 _?s %MNaX  
* @version 1.0 bw<w u}ED  
*/ 9*KMbd ^T  
public class BubbleSort implements SortUtil.Sort{ ~u0xXfv#  
Iz )hz9k  
/* (non-Javadoc) 5$oewjLO  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .H^P2tp  
*/ hoR=%pC*  
public void sort(int[] data) { 5ttMua <G?  
int temp; v (ka,Dk3  
for(int i=0;i for(int j=data.length-1;j>i;j--){ umjhG6  
if(data[j] SortUtil.swap(data,j,j-1); sc8DY!|OYN  
} y-#  
} k\pDJ7wF^  
} `\jTpDV_W  
} )_8}53C  
=dM.7$6) R  
} NQC3!=pQ}Y  
5#0e={X  
选择排序: "#twY|wW  
r!$'!lCR  
package org.rut.util.algorithm.support; sz/*w7  
l RDxIuTK  
import org.rut.util.algorithm.SortUtil; S= -M3fP~  
W7L+8LU;  
/** fpvvV(  
* @author treeroot a jQqj.  
* @since 2006-2-2 uxO J3  
* @version 1.0 X0WNpt&h  
*/ st?gA"5w  
public class SelectionSort implements SortUtil.Sort { 7]|zkjgI  
lc[XFc  
/* jJ a V  
* (non-Javadoc) ?j/kOD0  
* )nwZ/&@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y{Da+  
*/ rH_Jh}Y  
public void sort(int[] data) { U:]MgZWn  
int temp; o]Wz6 L  
for (int i = 0; i < data.length; i++) { )O3jQ_q=  
int lowIndex = i; M8';%  =@  
for (int j = data.length - 1; j > i; j--) { |gnAqkW0  
if (data[j] < data[lowIndex]) { V+lRi"m?|  
lowIndex = j; r6`\d k  
} x;]x_f z  
} <EMkD1e  
SortUtil.swap(data,i,lowIndex); =<{h^-j;a  
} n]+.  
} L[9OVD  
&1wpGJqm  
} Xv0F:1  
McjS)4j&.  
Shell排序: |;P^clS3  
p8=|5.  
package org.rut.util.algorithm.support; %[w Tz$S"  
! k,<|8(0  
import org.rut.util.algorithm.SortUtil; R"*R99  
:zlpfm2  
/** 6lsL^]7  
* @author treeroot u_.HPA  
* @since 2006-2-2 ASW4,%cl  
* @version 1.0 +Hj/0pp  
*/ XA1f' Kk  
public class ShellSort implements SortUtil.Sort{ HA!t$[_Ve  
WSLy}@`Vx  
/* (non-Javadoc) ^agj4$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _gW{gLYyJ  
*/ ?Ko|dmX  
public void sort(int[] data) { R:/ha(+  
for(int i=data.length/2;i>2;i/=2){ ?*H9-2W@  
for(int j=0;j insertSort(data,j,i); %cX"#+e  
} T C8`JU=wV  
} L/?]^!.  
insertSort(data,0,1); V^n0GJNo  
} =&Xdm(  
tz4 ]hF  
/** FLZSK:3B]  
* @param data Mra35  
* @param j :CaTP%GW  
* @param i A59gIp*>  
*/ ES}. xZ#~  
private void insertSort(int[] data, int start, int inc) { "MnSJ 2  
int temp; :.uk$jx  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); q8xd*--#  
} ]^ K;goQv  
} #`ls)-`7  
} M2@;RZ(|  
LA4<#KP  
} .Evy_o\^  
}`o? /!X   
快速排序: nt ,7u(  
*1^$.Q&  
package org.rut.util.algorithm.support; -M4p\6)Ge  
``|AgIg  
import org.rut.util.algorithm.SortUtil; 6/tI8H3E  
SfB8!V|;  
/** m"d/b~q  
* @author treeroot i ]o"_=C  
* @since 2006-2-2 W7=V{}b+  
* @version 1.0 2Y OKM #N]  
*/ s_ bR]G  
public class QuickSort implements SortUtil.Sort{ dqc1 q:k?$  
gR Nv-^  
/* (non-Javadoc) 8SC%O\,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4(cJ^]wb^  
*/ Z4hLdHo_  
public void sort(int[] data) { vl:J40Kfn  
quickSort(data,0,data.length-1); WE6\dhJ<  
} OP! R[27>  
private void quickSort(int[] data,int i,int j){ -rSIBc:$8  
int pivotIndex=(i+j)/2; {f DTSr?/  
file://swap +(?>-3_z  
SortUtil.swap(data,pivotIndex,j); U \oy8FZ  
kV&9`c+  
int k=partition(data,i-1,j,data[j]); bw4oLu?  
SortUtil.swap(data,k,j); %Mn.e a  
if((k-i)>1) quickSort(data,i,k-1); u\1>gDI)|  
if((j-k)>1) quickSort(data,k+1,j); 'g)n1 {  
\9{F5S z  
} iwF9[wAft  
/** @;Opx."  
* @param data @jy41eIo  
* @param i )9v`f9X){  
* @param j ..W-76{  
* @return p(JlvJjo  
*/ -db75=  
private int partition(int[] data, int l, int r,int pivot) { kkCZNQ~I  
do{ Y&.UIosWb  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); #{J,kcxS  
SortUtil.swap(data,l,r); )?aaBaN$  
} aelO3'UN  
while(l SortUtil.swap(data,l,r); ?> D tw#}  
return l; 0?DC00O  
} {zLhiUH a0  
O9M{  ).  
} OE`X<h4r  
/+]s.V.  
改进后的快速排序: G$M9=@Ug  
'lz "2@4{  
package org.rut.util.algorithm.support; kOL'|GgK  
RFaSwf,5n  
import org.rut.util.algorithm.SortUtil; Cby;?F6w  
Z|lU8`'5  
/** s1N?/>lmB  
* @author treeroot t= #&fSR  
* @since 2006-2-2 0&+k.Vg  
* @version 1.0 9xI GV!  
*/ zYER  
public class ImprovedQuickSort implements SortUtil.Sort { hqvE!Of  
_fk#<  
private static int MAX_STACK_SIZE=4096; &53]sFZ  
private static int THRESHOLD=10; }_'IE1bA  
/* (non-Javadoc) / ~ %KVe  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <UP m=Hb  
*/ xw5d|20b  
public void sort(int[] data) { [Nm4sI11  
int[] stack=new int[MAX_STACK_SIZE]; n/d`qS  
"/Pjjb:2  
int top=-1; 2B0W~x2=  
int pivot; /phX'xp  
int pivotIndex,l,r; -fI`3#  
7cDU2l  
stack[++top]=0; {7hLsK[])  
stack[++top]=data.length-1; 9pn>-1NJ  
BaI $S>/Q  
while(top>0){ $ ,Ck70_  
int j=stack[top--];  mEG6  
int i=stack[top--]; z;tI D~Y  
LkruL_E>  
pivotIndex=(i+j)/2; HSUI${<  
pivot=data[pivotIndex]; 0oZsb\  
g#]" hn  
SortUtil.swap(data,pivotIndex,j); Jzji&A~  
f"[J "j8  
file://partition *D}0 [|O  
l=i-1; 7cP@jj  
r=j; <*ZJaBwWU~  
do{ 4rT*tW"U  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); `3H4Ajzcc  
SortUtil.swap(data,l,r); !^#jwRpeN  
} C@ZK~Y_g  
while(l SortUtil.swap(data,l,r); 7w :ef0S  
SortUtil.swap(data,l,j);  .~A*=  
$,=6[T!z+e  
if((l-i)>THRESHOLD){ SvM6iZ]  
stack[++top]=i; S_ MyoXV  
stack[++top]=l-1; jd]s<C3o  
} "xI"  
if((j-l)>THRESHOLD){ aimarU  
stack[++top]=l+1; 6k{2 +P  
stack[++top]=j; ,_aM`%q?Fj  
} {'sY|lou  
N[]Hc  
} j`'`)3f  
file://new InsertSort().sort(data); T3UMCqc=  
insertSort(data); zLs|tJOVp  
} : JzI>/  
/** -C-?`R  
* @param data n9w9JXp;!  
*/ EF7+ *Q9  
private void insertSort(int[] data) { S1 Z2_V  
int temp; kE>0M9EdH  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); =!O*/6rz  
} /tV/85r  
} 'FlJpA}  
} 6=4wp?  
[yl sz?  
} nkxzk$  
Q?ahr~qo  
归并排序:  B[=(#W  
4a0:2 kIKa  
package org.rut.util.algorithm.support; [${ QzO  
!-2R;yo12  
import org.rut.util.algorithm.SortUtil; 'j^xbikr  
d2oh/j6`TA  
/** WARb"8Kg  
* @author treeroot }I|u'#n_  
* @since 2006-2-2 3 &u_A?;  
* @version 1.0 8`4<R6]LKB  
*/ M` q?Fk  
public class MergeSort implements SortUtil.Sort{ PWh^[Rd)  
1c3TN#|)W  
/* (non-Javadoc) HX'FYt/?t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9I1tN  
*/ 8h3=b[  
public void sort(int[] data) { 3G.5724,  
int[] temp=new int[data.length]; ] h-,o R?e  
mergeSort(data,temp,0,data.length-1); S6}@I ,Q  
} u p.Q>28r  
l Z#o+d2Y  
private void mergeSort(int[] data,int[] temp,int l,int r){ /V3=KY`_J  
int mid=(l+r)/2; F:*W5xX  
if(l==r) return ; sK{l 9  
mergeSort(data,temp,l,mid); 8^Hn"v  
mergeSort(data,temp,mid+1,r); V fv@7@q  
for(int i=l;i<=r;i++){ 56^ +;^f^`  
temp=data; M02uO`Y9  
} 4S~o-`&W  
int i1=l; h\plQ[T  
int i2=mid+1; 8N:owK  
for(int cur=l;cur<=r;cur++){ jV.g}F+1m  
if(i1==mid+1) +!QJTn"3  
data[cur]=temp[i2++]; j1_ @qns{  
else if(i2>r) <%xS{!'}  
data[cur]=temp[i1++]; kb[P\cRa  
else if(temp[i1] data[cur]=temp[i1++]; [: xiZ  
else ~m|Mg9-  
data[cur]=temp[i2++]; KIR'$ 6pn~  
} M?=;JJ:  
} [V4{c@  
* ),8PoT  
} OB[o2G<0  
*x)Ozfe  
改进后的归并排序: 'V8N  
e]jH+IR:>  
package org.rut.util.algorithm.support; Bo<>e~6P  
z4 &iK)x  
import org.rut.util.algorithm.SortUtil; u:aW 8  
TCT57P#b  
/** I^oE4o  
* @author treeroot jV(6>BAI_  
* @since 2006-2-2 C3G)'\yL  
* @version 1.0 {R/C0-Q^^  
*/ ix#epuN  
public class ImprovedMergeSort implements SortUtil.Sort { nXjP x@  
gN)c  
private static final int THRESHOLD = 10;  ;raN  
B||;'  
/* -P&6L\V  
* (non-Javadoc) Lm@vXgMD  
* "V&+7"Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `"qP  
*/ 0 IQ'3_  
public void sort(int[] data) { {.yStB. T  
int[] temp=new int[data.length];  ]xguBh]  
mergeSort(data,temp,0,data.length-1); E*#]**  
} ?$e9<lsQq)  
iCHt1VV]  
private void mergeSort(int[] data, int[] temp, int l, int r) { Bi@&nAhn@  
int i, j, k; vD 5vbl  
int mid = (l + r) / 2; )sho*;_o  
if (l == r) :ss,Hl  
return; XUuu-wm:}  
if ((mid - l) >= THRESHOLD) 97K[(KE  
mergeSort(data, temp, l, mid); ljK rj  
else a>mm+L 8y  
insertSort(data, l, mid - l + 1); C&++VRnm  
if ((r - mid) > THRESHOLD) ~rjTF!  
mergeSort(data, temp, mid + 1, r); 5OoN!TEM  
else }du XC[6  
insertSort(data, mid + 1, r - mid); :VF<9@t  
"B_K XL  
for (i = l; i <= mid; i++) { cUDoN`fSl,  
temp = data; V/LQ<Yke  
} RT>{*E<I  
for (j = 1; j <= r - mid; j++) { U%h);!<  
temp[r - j + 1] = data[j + mid]; xQw7 :18wQ  
} V7TVt,-3  
int a = temp[l]; u*qV[y5Bl  
int b = temp[r]; rp5(pV 7*  
for (i = l, j = r, k = l; k <= r; k++) { _z[#}d;k  
if (a < b) { P ~PIMkt  
data[k] = temp[i++]; o[H{(f 1%  
a = temp; -{`@=U  
} else { |Yq$s U  
data[k] = temp[j--]; c{[q>@y pK  
b = temp[j]; A>{p2?`+!  
} o !4!"O'E  
} _gD pKEaY  
} *Z_C4Tj  
"bDs2E+W  
/** 0(_l|PScF  
* @param data 0@2mXO9f"  
* @param l !~Q2|r  
* @param i %%cHoprDa  
*/ ={hX}"*D  
private void insertSort(int[] data, int start, int len) { JoSJH35=:  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); OLI$1d_  
} eHDef  
} ^Q&u0;OJ  
} [b:e:P 2  
} :8A!HI}m{  
=}PdH`S  
堆排序: BcD&sQ2F  
#$3yz'"QF  
package org.rut.util.algorithm.support; G<M:Ak+~  
s&GJW@ |  
import org.rut.util.algorithm.SortUtil; i|1^+;  
=!m}xdTP  
/** '_b.\_s-d  
* @author treeroot /*|oL# hK  
* @since 2006-2-2 P]z[v)}  
* @version 1.0 U\rh[0  
*/ TNJG#8n%Y  
public class HeapSort implements SortUtil.Sort{ N?X~w <  
|pa$*/!NT  
/* (non-Javadoc) uytE^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Et_V,s<|  
*/ 0|; .6\  
public void sort(int[] data) { UU8pz{/  
MaxHeap h=new MaxHeap(); HK+/:'P u  
h.init(data); jSc#+_y  
for(int i=0;i h.remove(); (@WA1oNG  
System.arraycopy(h.queue,1,data,0,data.length); 0EJ(.8hwm  
} 5JhdV nT_  
:NJ(r(QG>  
private static class MaxHeap{ V34hFa  
hQNe;R5  
void init(int[] data){ ;l}- Z@! /  
this.queue=new int[data.length+1]; 1n\ t+F  
for(int i=0;i queue[++size]=data; _e9:me5d"$  
fixUp(size); ?JxbSK#  
} ]\ngX;h8G  
} (LHp%LaZ\;  
e$Y[Z{T5  
private int size=0; GA`PY-Vs)  
W[+|}  
private int[] queue; V(Yxh+KU  
%7g:}O$  
public int get() { -l}IZY  
return queue[1]; >&!RWH9*q  
} vy,&N^P  
~SvC[+t+U  
public void remove() { 5Zw1y@k(  
SortUtil.swap(queue,1,size--); Y wkyq>Rv  
fixDown(1); p\{-t84n  
} bqQq=SO  
file://fixdown [yj).*0  
private void fixDown(int k) { BnRN;bu  
int j; %& _V0R\k  
while ((j = k << 1) <= size) { +y 87~]]  
if (j < size %26amp;%26amp; queue[j] j++; <5=JE*s$NS  
if (queue[k]>queue[j]) file://不用交换 <)*2LBF@]  
break; *-s,. F+c  
SortUtil.swap(queue,j,k); OiDhJ  
k = j; 8>/Q1(q0  
} #P#-xz  
} 1 y}2+Kk  
private void fixUp(int k) { ! Q<>3 xZ  
while (k > 1) { "7>>I D  
int j = k >> 1; f&D]anf33  
if (queue[j]>queue[k]) 8}w6z7e|{  
break; q.2(OP>(  
SortUtil.swap(queue,j,k); kF7V.m/~o  
k = j; mJB2)^33a  
}  fI\9\x  
} i@NqC;~;  
4 g. bR  
} 1009ES7*  
a(]`F(L  
} L !4t[hhe=  
Q!,<@b)  
SortUtil: ob_I]~^I?|  
fIF<g@s  
package org.rut.util.algorithm; r}yG0c,  
%r)avI  
import org.rut.util.algorithm.support.BubbleSort; fFjH "2WD  
import org.rut.util.algorithm.support.HeapSort; Il.Ed-&62  
import org.rut.util.algorithm.support.ImprovedMergeSort; /m _kn  
import org.rut.util.algorithm.support.ImprovedQuickSort; V#ev-\k}@  
import org.rut.util.algorithm.support.InsertSort; 7m#[!%D  
import org.rut.util.algorithm.support.MergeSort; 7j7e61 Ax  
import org.rut.util.algorithm.support.QuickSort; | nJZie8m  
import org.rut.util.algorithm.support.SelectionSort; qNyzU@  
import org.rut.util.algorithm.support.ShellSort; /WPv\L  
;O  0+,  
/** 4lKVY<  
* @author treeroot Nx#4W1B[`H  
* @since 2006-2-2 YC]L)eafo`  
* @version 1.0 LflFe@2  
*/ 9x+<I k  
public class SortUtil { 6a}"6d/sTL  
public final static int INSERT = 1; fx8EB8A7K7  
public final static int BUBBLE = 2; 9{j66  
public final static int SELECTION = 3; '2zL.:~  
public final static int SHELL = 4; NvjJ b-u  
public final static int QUICK = 5; Ff^@~X+W<  
public final static int IMPROVED_QUICK = 6; .ut{,(5  
public final static int MERGE = 7; dMx4ykrR  
public final static int IMPROVED_MERGE = 8; 1p`+  
public final static int HEAP = 9; M9!AIHq4  
a:YI"*S  
public static void sort(int[] data) { !2:3MbtR  
sort(data, IMPROVED_QUICK); iAMtejw  
} 6{d6s#|%  
private static String[] name={ U-wLt(Y<  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ~#\i!I;RY}  
}; B@Nt`ky0*  
h?\2 _s  
private static Sort[] impl=new Sort[]{ S~$'WA  
new InsertSort(), ea=83 Zj  
new BubbleSort(), Wi n8LOC  
new SelectionSort(), 0%s|Zbo!>  
new ShellSort(), nRhrWS  
new QuickSort(), q ^rl)  
new ImprovedQuickSort(), *5$&`&,  
new MergeSort(), AgF5-tz6x  
new ImprovedMergeSort(), +)nT|w45  
new HeapSort() iV.p5FD  
}; ~`Qko-a&  
M^rM-{?<  
public static String toString(int algorithm){ >95TvJ  
return name[algorithm-1]; Hg}I]!B  
} {mE! Vf  
V's:>;  
public static void sort(int[] data, int algorithm) { XC15K@K  
impl[algorithm-1].sort(data); FDFH,J`_  
} RaSz>-3d  
e2$]g>  
public static interface Sort { .V6-(d  
public void sort(int[] data); gM;}#>6  
} XM Vq-8B0  
[AEBF2OIv  
public static void swap(int[] data, int i, int j) { TY;U2.Ud  
int temp = data; NCA {H^CL  
data = data[j]; @D`zKYwX1  
data[j] = temp; i`%.  
} ;)DzC c/  
} !Q-wdzsp?  
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