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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。 zdT->%  
插入排序: HcDyD0;L.  
U !.~XT=  
package org.rut.util.algorithm.support; 0~:e SWz=  
b3P9Yoj-  
import org.rut.util.algorithm.SortUtil; kkHTbn=!  
/** t{[gKV-b  
* @author treeroot 7s$6XO!  
* @since 2006-2-2 QQSH +  
* @version 1.0 &s2#1  
*/ SAQs {M  
public class InsertSort implements SortUtil.Sort{ n8 GF8a  
L;nZ0)@@l  
/* (non-Javadoc) K]%N-F>r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \kfcv  
*/ $]Rl__;  
public void sort(int[] data) { %zRiLcAT  
int temp; '?z9,oW{  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); nP5d?  
} ?L8&(&1@VD  
} zL6 \p)y  
} !k%l+I3J[  
Gmqs`{tc  
} zuU Q."#i  
A-X  
冒泡排序: Ny]'RS-  
JO}#f+w}  
package org.rut.util.algorithm.support; f<) Ro$   
(0X,Qwx  
import org.rut.util.algorithm.SortUtil; _+}-H'7=  
b1eK(F  
/** ^! $} BY  
* @author treeroot ,^n-L&  
* @since 2006-2-2 3j]UEA^  
* @version 1.0 Kp$_0  
*/ Dl>*L  
public class BubbleSort implements SortUtil.Sort{ :h^O{"au^  
[vZfH!vLP  
/* (non-Javadoc) YG-Z.{d5Z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9"[!EKW  
*/ wxH (&CB-{  
public void sort(int[] data) { Bm65 W  
int temp; `WraOsoY  
for(int i=0;i for(int j=data.length-1;j>i;j--){ rSM$E  
if(data[j] SortUtil.swap(data,j,j-1); kQqBHA  
} 2Px$0&VN  
} XhQw+j~1.  
} gcQ.  YP9  
} *(@L+D0N  
M@',3  
} .vCY%0oE  
aW52.X z%8  
选择排序: j|3g(_v4W  
o+]Y=r2  
package org.rut.util.algorithm.support; M"k3zK,  
D{Hh#x8Y  
import org.rut.util.algorithm.SortUtil; # q0Ub-  
7}2sIf[I  
/** vgUhN_rK  
* @author treeroot (#!(Q) ]  
* @since 2006-2-2 TBoM{s=.  
* @version 1.0 <`oCz Q1  
*/ +Q@/F~1@6@  
public class SelectionSort implements SortUtil.Sort { j;ff } b  
,\\%EZ%a  
/* 2rPcNh9  
* (non-Javadoc) ]+^;vc 1r  
* s_S<gR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v_?s1+w  
*/ owfp^hla  
public void sort(int[] data) { NB|RZf9M  
int temp; 0A) Vtj$  
for (int i = 0; i < data.length; i++) { Yio>ft&g]  
int lowIndex = i; v>x {jZkFL  
for (int j = data.length - 1; j > i; j--) { m;;0 Cl  
if (data[j] < data[lowIndex]) { 4jC4X*  
lowIndex = j; FYx `o\  
} ~zXG<}n  
} UFzM#  
SortUtil.swap(data,i,lowIndex); o(Ua",|  
} 2<46jJYL'  
} >!HfH(is\  
0U>t>&,"  
} *` @XKK  
C8bGae(  
Shell排序: 0%GqCg  
Sleu#]-  
package org.rut.util.algorithm.support; *G2)@0 {  
(>!]A6^L~  
import org.rut.util.algorithm.SortUtil; kT Z?+hx  
@2GhN&=  
/** )vEHLp.  
* @author treeroot a>&;K@  
* @since 2006-2-2 uQ)JC 7b\  
* @version 1.0 % K9; qJ5  
*/ \-$b o=s.  
public class ShellSort implements SortUtil.Sort{ :_{{PY0PK  
6b#:H~ <  
/* (non-Javadoc) z*NC?\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3<e(@W}n-M  
*/ p]1yd;Jt  
public void sort(int[] data) { w (vE2Y ?  
for(int i=data.length/2;i>2;i/=2){ ,w9#%=xE  
for(int j=0;j insertSort(data,j,i); YJ$Vn >6Z  
} +WU|sAK"  
} IF36K^K  
insertSort(data,0,1); `uM0,Z  
} 6)uPM"cO  
!i~x"1  
/** g~ppPAH  
* @param data #x4h_K Y  
* @param j ?[hy|r6$  
* @param i /P?|4D}<  
*/ oPBg+Bh*  
private void insertSort(int[] data, int start, int inc) { &.+n L  
int temp; s{1Deek=  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Th& Wq  
} DJD]aI  
} ?'ez.a}  
} 5 CY_Ay\  
EL 8N[]RF  
} [G'!`^V,  
nyl8=F:V  
快速排序: 3gPD(r1g  
&z xBi"  
package org.rut.util.algorithm.support; U'Ja\Ek/f  
w$(0V$l_  
import org.rut.util.algorithm.SortUtil; YvxMA#  
1a=9z'8V  
/** 3gV&`>@  
* @author treeroot ATMogxh  
* @since 2006-2-2 Tjeo*n^  
* @version 1.0 |;U}'|6  
*/ IQk#  
public class QuickSort implements SortUtil.Sort{ @sg T[P*ut  
*1o+o$hY2  
/* (non-Javadoc) 4B3irHs\Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >^a"Z[s[  
*/ bD-/ZZz  
public void sort(int[] data) { UgD'Bi  
quickSort(data,0,data.length-1); ['}^;Y?*o  
} qUoMg%Z%l  
private void quickSort(int[] data,int i,int j){ \AtwO  
int pivotIndex=(i+j)/2; Kl46CZs#8  
file://swap <<W.x)#:  
SortUtil.swap(data,pivotIndex,j); MWn L#!  
mSk :7ozZ  
int k=partition(data,i-1,j,data[j]); }{kTh%^  
SortUtil.swap(data,k,j); aG8D%i0  
if((k-i)>1) quickSort(data,i,k-1); q563,s  
if((j-k)>1) quickSort(data,k+1,j); &JXHDpd$a^  
U>plv  
}  Z$#ZYD  
/** g+KzlS[6  
* @param data Rbj+P;t&  
* @param i 5|~r{w)9  
* @param j CyK$XDHa  
* @return @7HOL-i  
*/ +/b4@B7  
private int partition(int[] data, int l, int r,int pivot) { A9qO2kq7_  
do{ \9|]  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); {Hp}F!X$  
SortUtil.swap(data,l,r); $*v20  
} !6tC[W`  
while(l SortUtil.swap(data,l,r); ?CT^Zegmr  
return l; PkCeV]`w  
} ssr)f8R#,#  
CI~;B  
} 5%Fn^u:  
SX?$H~A  
改进后的快速排序: "{ QHWZ  
Nh\8+v*+{  
package org.rut.util.algorithm.support; N>}K+M>  
{OhkuON  
import org.rut.util.algorithm.SortUtil; H-cBXp5z  
YqY6\ mo  
/** >NOYa3  
* @author treeroot hRy }G'0  
* @since 2006-2-2 ]6VUqFO)  
* @version 1.0 t0V_ c'm  
*/ kO3k| 6f=  
public class ImprovedQuickSort implements SortUtil.Sort { v20I<!5w  
M%5$-;6~_  
private static int MAX_STACK_SIZE=4096; !^w\$cw&  
private static int THRESHOLD=10; d Xo'#.  
/* (non-Javadoc) \2<yZCn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mN'9|`>V>  
*/ n8OdRv  
public void sort(int[] data) { w)m0Z4*  
int[] stack=new int[MAX_STACK_SIZE]; k>0cTBY&  
55\X\> 0C7  
int top=-1; uQ%HLL-W/  
int pivot; P7x?!71?L  
int pivotIndex,l,r; V\M!]Nnxr  
'y M:W cN  
stack[++top]=0; vs0H^L  
stack[++top]=data.length-1; ma-Y'  
pTX'5   
while(top>0){ ='bmjXu  
int j=stack[top--]; k+R?JWC:  
int i=stack[top--]; x"wM_hl5L  
\lbiz4^>  
pivotIndex=(i+j)/2;  wpdEI(  
pivot=data[pivotIndex]; (z1%lZ}(  
sBXk$  
SortUtil.swap(data,pivotIndex,j); ]qza*ba  
=ci5&B?  
file://partition qQ DFg`  
l=i-1; 2#:]%y;\  
r=j; uF3p1by  
do{ K<L%@[gi  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ^$Io;*N4  
SortUtil.swap(data,l,r); 645C]l  
} y0&HXX#\  
while(l SortUtil.swap(data,l,r); (Nlm4*{h  
SortUtil.swap(data,l,j); !zkEh9G  
_TN$c  
if((l-i)>THRESHOLD){ &|{,4V0%A  
stack[++top]=i; c+)|o!d  
stack[++top]=l-1; ]ifHA# z`~  
} D_ZBx+/_?  
if((j-l)>THRESHOLD){ S,tVOxs^  
stack[++top]=l+1; OI}HvgV^!  
stack[++top]=j; MW[ 4^  
} qCkg\)Ks5I  
DF[b?  
} H6JMN1#t$  
file://new InsertSort().sort(data); Jx9%8Ek  
insertSort(data); vzm4  
} P_lcX;O  
/** >T*g'954xF  
* @param data n`KXJ?t  
*/ k`~br249  
private void insertSort(int[] data) { boOw K?  
int temp; Q fyERa\rb  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); c3!|h1h/v  
} 'sQO0611S  
} pH:|G  
} &?`&X=Q  
qf=[*ZY  
} pVa|o&,  
+\Mm (Nd  
归并排序: fh)`kZDk  
n03SX aU~V  
package org.rut.util.algorithm.support; Mh.eAM8_  
#DRt Mrfat  
import org.rut.util.algorithm.SortUtil; 2P=~3g*  
bfI -!,  
/** u R%R]X  
* @author treeroot Jo(}#_y?  
* @since 2006-2-2 l(#Y8  
* @version 1.0 %y\7  
*/ kGqf@ I+  
public class MergeSort implements SortUtil.Sort{ ,L:)ZZgN  
[k=9 +0p  
/* (non-Javadoc) }Z? [Ut  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Tc(v\|F,  
*/ r= | |sZs  
public void sort(int[] data) { rtF6Lg  
int[] temp=new int[data.length]; :::f,aCAu  
mergeSort(data,temp,0,data.length-1); o4f9EJY   
} molowPI  
hJ*E"{xs  
private void mergeSort(int[] data,int[] temp,int l,int r){ ~S>ba']  
int mid=(l+r)/2; ![!b^:f  
if(l==r) return ; #R PB;#{  
mergeSort(data,temp,l,mid); L0VR(  
mergeSort(data,temp,mid+1,r); wP':B AQ4U  
for(int i=l;i<=r;i++){ 2^ZPO4|  
temp=data; "#k(V=y  
} E=*Q\3G~  
int i1=l; wEc5{ b5M  
int i2=mid+1; 3M*[a~  
for(int cur=l;cur<=r;cur++){ [f(^vlK  
if(i1==mid+1) ~wg^>!E  
data[cur]=temp[i2++]; g):jZU]b  
else if(i2>r) (a!,)  
data[cur]=temp[i1++]; D"f(nVEr  
else if(temp[i1] data[cur]=temp[i1++]; "wC5hj]  
else E d/O\v@  
data[cur]=temp[i2++]; _NnO mwK7  
} H 7F~+ Q-}  
} lFV|GJ  
g uWqHVSs  
} 0_pwY=P  
ZxPAu%Y  
改进后的归并排序: ~ A|*]0,  
q;Pz B4#  
package org.rut.util.algorithm.support; 3D dG$@  
kj=2+)!E7  
import org.rut.util.algorithm.SortUtil; :|Nbk58  
>t }D5ah  
/** 2U+p@}cQUA  
* @author treeroot Ol[IC  
* @since 2006-2-2 <!(n5y_  
* @version 1.0 #}yFHM?i  
*/ 7 ~8Fs@  
public class ImprovedMergeSort implements SortUtil.Sort { %9Fg1LH42r  
X*"O'XCA  
private static final int THRESHOLD = 10; 0U*"OSpF  
PQ1NQy8  
/* bK1`a{  
* (non-Javadoc) @BhAFv,7  
* V=MZOj6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9cj-v}5j  
*/ \^LR5S&  
public void sort(int[] data) { {/!Gh\i  
int[] temp=new int[data.length]; HZ=yfJs nc  
mergeSort(data,temp,0,data.length-1); g|_*(=Q  
} ?R:Hj=.  
~At.V+  
private void mergeSort(int[] data, int[] temp, int l, int r) { '+zsj0!A  
int i, j, k; ahv=HWX k  
int mid = (l + r) / 2; tp2 _OQAQ  
if (l == r) KptLeb:Om  
return; .. TjEBp  
if ((mid - l) >= THRESHOLD) YDD]n*&  
mergeSort(data, temp, l, mid); ADz|Y~V!  
else s7} )4.vO  
insertSort(data, l, mid - l + 1); -- FtFo  
if ((r - mid) > THRESHOLD) ,peE'   
mergeSort(data, temp, mid + 1, r); C$gLi8|m  
else GTNTx5H  
insertSort(data, mid + 1, r - mid); OR8o%AxL7  
M?u)H&kEl  
for (i = l; i <= mid; i++) { Sxu v}y\  
temp = data; S]g)^f'a65  
} 4O^1gw  
for (j = 1; j <= r - mid; j++) { r=aQ S5  
temp[r - j + 1] = data[j + mid]; q~_jF$9SX  
} dtl<  
int a = temp[l]; ,jcp"-5#j  
int b = temp[r]; ttVSgKAsm  
for (i = l, j = r, k = l; k <= r; k++) { BIyG[y?qO  
if (a < b) { o2jB~}VMl  
data[k] = temp[i++]; '=* 5C{  
a = temp; =oDrN7`,B  
} else { K_3ZJ  
data[k] = temp[j--]; 4]KceE  
b = temp[j]; H4Ek,m|c  
} >E=a~ O  
} O8o18m8UH  
} &W!@3O{~.  
a<.@+sj{  
/** iNSJOS  
* @param data .r'.5RI A  
* @param l \0*LfVr;P  
* @param i a $:N9&P  
*/ c'R|Wyf  
private void insertSort(int[] data, int start, int len) { v4aGL<SO  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); M6!brj\[|  
} 7^=jv~>wP  
} =^vUb  
} @7'gr>_E  
} B=|sLs`I  
'WCTjTob/  
堆排序: {!h[@f4  
>,vuC4v-  
package org.rut.util.algorithm.support; {p iS3xBi  
Z4' v  
import org.rut.util.algorithm.SortUtil; g\'84:*J\  
h+(s/o?\  
/** 7RJW  
* @author treeroot < *OF  
* @since 2006-2-2 LL+rd xJO^  
* @version 1.0 6suc:rp";  
*/ JH#+E04#  
public class HeapSort implements SortUtil.Sort{ k<H&4Z)d9  
bxq`E!]  
/* (non-Javadoc) cgOoQP/#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K? k`U,  
*/ FG\?_G  
public void sort(int[] data) { %xz02$k  
MaxHeap h=new MaxHeap(); sNVD"M,  
h.init(data); h+@t8Q;gGw  
for(int i=0;i h.remove(); \gpKQt0  
System.arraycopy(h.queue,1,data,0,data.length); |\t_I~de  
} 0=&]!WRT  
l/LUwDI{  
private static class MaxHeap{ H#E0S>Jw|  
Nl _Jp:8s  
void init(int[] data){ H'.eqZM  
this.queue=new int[data.length+1]; w"|c;E1;_  
for(int i=0;i queue[++size]=data; >0oc=9H8  
fixUp(size); [^f`D%8o  
} 'C<=bUM  
} qcF{Kex"  
r_m&Jl@4  
private int size=0; [:qX3"B  
jo~vOu  
private int[] queue; U"]i.J1  
[-ecKPx  
public int get() { ]\lw^.%  
return queue[1]; E?uv&evPK7  
} CjGI}t  
A )cb  
public void remove() { HZ3<}`P_W  
SortUtil.swap(queue,1,size--); i1C'  
fixDown(1); <0m;|Ai'W  
} R?Qou!*]  
file://fixdown J:a^''  
private void fixDown(int k) { QR)eJ5<  
int j; -(EqBr@_  
while ((j = k << 1) <= size) { :JYOC+#q7  
if (j < size %26amp;%26amp; queue[j] j++; , +^db)  
if (queue[k]>queue[j]) file://不用交换 x!+ a,+G  
break; -j,o:ng0  
SortUtil.swap(queue,j,k); }1wuH  
k = j; I_rVeMw=  
} Fz% n!d  
} XEI]T~  
private void fixUp(int k) { ( 9l|^w["  
while (k > 1) { K]l) z* I  
int j = k >> 1; plq\D.C  
if (queue[j]>queue[k]) 14R))Dz"  
break; W+E2({  
SortUtil.swap(queue,j,k); &AVi4zV  
k = j; qz&)|~,\C  
} 3^Y-P8.zdB  
} $B2@mC([S  
RZZB?vx  
} P}jr 8Z  
|Th{*IJ <,  
} ~nQb;Bdh%  
ra1hdf0"  
SortUtil: W=*\4B]  
^BZdR<;  
package org.rut.util.algorithm; sMx\WTyz  
"`k[ 4C  
import org.rut.util.algorithm.support.BubbleSort; YS*t7  
import org.rut.util.algorithm.support.HeapSort; oS4ag  
import org.rut.util.algorithm.support.ImprovedMergeSort; va0 a4s1O  
import org.rut.util.algorithm.support.ImprovedQuickSort; y~fy0P:T  
import org.rut.util.algorithm.support.InsertSort; `t -3(>P  
import org.rut.util.algorithm.support.MergeSort; 7o<RvM  
import org.rut.util.algorithm.support.QuickSort; ;/.ZYTD  
import org.rut.util.algorithm.support.SelectionSort; ~U|te_l  
import org.rut.util.algorithm.support.ShellSort; @WmB0cc_  
JpDkf$kM  
/** ! [X<>  
* @author treeroot X {$gdz8S9  
* @since 2006-2-2 cQny)2k*x  
* @version 1.0 I zT%Kq  
*/ k8TMdWW  
public class SortUtil { >&R|t_ypw  
public final static int INSERT = 1; yWuq/J:  
public final static int BUBBLE = 2; s5.2gu|"%  
public final static int SELECTION = 3; v:chr$>j5  
public final static int SHELL = 4; \0$?r4A  
public final static int QUICK = 5; -l",!sV  
public final static int IMPROVED_QUICK = 6; ])`F$S  
public final static int MERGE = 7; H4N==o  
public final static int IMPROVED_MERGE = 8; = U5)m  
public final static int HEAP = 9; 8Y9mB #X  
SO)??kQ{U  
public static void sort(int[] data) { h5JXKR.1]c  
sort(data, IMPROVED_QUICK); ll#PCgIm  
} S(Pal/-"  
private static String[] name={ ;8@A7`^  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ,oC r6 ]  
}; i< ih :  
_ |; bh  
private static Sort[] impl=new Sort[]{ nT>?}/S  
new InsertSort(), 6Z$T& Ul{  
new BubbleSort(), W +S>/`N  
new SelectionSort(), k`-L5#`  
new ShellSort(), w*+rBp,f  
new QuickSort(), >QyMeH  
new ImprovedQuickSort(), u1uY*p  
new MergeSort(), K"pfp !Y  
new ImprovedMergeSort(), 1#'wR3[+  
new HeapSort() Xf0pQ]8\  
}; r~sGot+sQA  
L{42?d  
public static String toString(int algorithm){ 6V)#Yf  
return name[algorithm-1]; l$FHL2?Cp  
} it.l;L_nW  
mp#5V c  
public static void sort(int[] data, int algorithm) { . &e,8  
impl[algorithm-1].sort(data); Y/ `fPgE  
} G/y< bPQ  
GXAcy OV  
public static interface Sort { Uz0mSfBp  
public void sort(int[] data); G -;Yua2\  
} ]?kf;A@  
':Te#S  
public static void swap(int[] data, int i, int j) { Cc^t&Eg  
int temp = data; Po2YDj`  
data = data[j]; !} 1p:@  
data[j] = temp; qRU8uu   
} = *sP, 6  
} a7+BAma<  
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