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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。 I 1VEm?CQ  
插入排序: "M5ro$qZ}  
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package org.rut.util.algorithm.support; YjIED,eRv  
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import org.rut.util.algorithm.SortUtil; ==e#CSJq  
/** X,JWLS J  
* @author treeroot 0,L$x*Nj5  
* @since 2006-2-2 g qJEJ~  
* @version 1.0 Cr V2 V)|G  
*/ x>8}|ou  
public class InsertSort implements SortUtil.Sort{ :)+@qxTy  
)kY _"= d  
/* (non-Javadoc) 23u1nU[0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BhE~k?$9  
*/ 4MF}FS2)  
public void sort(int[] data) { b/n8UxA  
int temp; ` HE:D2b  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); o,''f_tRQ|  
} $jm>tW&;  
} ^b|Nw:  
} =Zb"T5E  
3qxG?G N  
} jFPE>F7-M  
}JpslY*aS  
冒泡排序: h2/1S{/n]  
(-Ct!aW|  
package org.rut.util.algorithm.support; L9unhx  
9^ *ZH1  
import org.rut.util.algorithm.SortUtil; K^cWj_a"  
EfrkB"  
/** hO<w]jV,  
* @author treeroot meM.?kk(  
* @since 2006-2-2 |>/&EElD  
* @version 1.0 He71h(BHm  
*/ s ?Qb{  
public class BubbleSort implements SortUtil.Sort{ c[d'1=Qiy  
-RqAT1  
/* (non-Javadoc) nGJIjo_I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O3w_vm'  
*/ ZTPOD.:#  
public void sort(int[] data) { }Cq9{0by?a  
int temp; :'=~/GR  
for(int i=0;i for(int j=data.length-1;j>i;j--){ @<w9fzi  
if(data[j] SortUtil.swap(data,j,j-1); vA7jZw  
} XpAq=p0;  
} e=F( Zf+1^  
} \,cKt_{ u  
} j@?[vi  
M@2Qn-I  
} _]~ht H  
84oW  
选择排序: +q_lYGTiO  
A@  
package org.rut.util.algorithm.support; |<Dx  
<}Wy;!L  
import org.rut.util.algorithm.SortUtil; lTOM/^L  
4-nr_ WCm4  
/** 18w^7!F?~u  
* @author treeroot eze(>0\f  
* @since 2006-2-2 8,H5G`  
* @version 1.0 t ]I(98pY  
*/ ^q N1~v=hS  
public class SelectionSort implements SortUtil.Sort { pv?17(w(\  
+_XbHjhN/  
/* V8U`%/`N  
* (non-Javadoc) u+tb83 ~[=  
* uSQ>oi]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :mtw}H 'F8  
*/ w KMk|y>  
public void sort(int[] data) { Y/ac}q  
int temp; 7pI \`*7b  
for (int i = 0; i < data.length; i++) { LX?r=_\  
int lowIndex = i; (#l_YI -  
for (int j = data.length - 1; j > i; j--) { T# _n-b>  
if (data[j] < data[lowIndex]) { DGfQo5#  
lowIndex = j; 6RT0\^X*:  
} zQj%ds:  
} {7~ $$AR(  
SortUtil.swap(data,i,lowIndex); 5iI3u 7Mn1  
} IOSoc 7+"  
} $}nUK~$GSv  
=5=Vm[  
} _Il9s#NA%  
*I1W+W`G  
Shell排序: 3w:Z4]J  
0|>  
package org.rut.util.algorithm.support; |e[0Qo@  
1 GHgwT  
import org.rut.util.algorithm.SortUtil; 0S5C7df  
M^JZ]W(  
/** $\@ V4  
* @author treeroot ,t&-`U]AX  
* @since 2006-2-2 tD0>(41K  
* @version 1.0 Am?Hkh2  
*/ 8OtUY}R  
public class ShellSort implements SortUtil.Sort{ WT!\X["FI$  
a*8.^SdzR  
/* (non-Javadoc) Qu>zO!x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rn5g+%jX*  
*/ n]fbV/ x  
public void sort(int[] data) { ]GR q  
for(int i=data.length/2;i>2;i/=2){ &@iF!D\u  
for(int j=0;j insertSort(data,j,i); DMxS-hl  
} +G[HZ,FL  
} Y&!]I84]  
insertSort(data,0,1); 898wZ{9  
} lgqL)^8A  
j}.J$RtW1f  
/** `8.32@rUB.  
* @param data 4Hpu EV8Q  
* @param j utl=O  
* @param i GGL4<P7  
*/ = hX-jP  
private void insertSort(int[] data, int start, int inc) { U+r#Y E.  
int temp; v9`B.(Ru  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ~)8i5p;P/k  
} |Ge/|;.v`  
} ,p`b Wm  
} R}6la.mQ  
Tocdh.H|  
} n_&)VF#n(  
%s :  
快速排序: H_=[~mJ  
NEou2y+}  
package org.rut.util.algorithm.support; qVe6RpS  
vMdhNOU  
import org.rut.util.algorithm.SortUtil; Lz{T8yvZ  
fX$4TPy(h  
/** P:-/3  
* @author treeroot fQ_8{=<-&X  
* @since 2006-2-2 lnSE+YJ>  
* @version 1.0 '*;eFnmvs:  
*/ aq\TO?  
public class QuickSort implements SortUtil.Sort{ @wgGnb)  
mL5f_Fb+  
/* (non-Javadoc) wR+`("2{r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UVmyOC[Y{  
*/ d?y\~<  
public void sort(int[] data) { d#:J\2V"R  
quickSort(data,0,data.length-1); B:#0B[  
} 2|>wY%  
private void quickSort(int[] data,int i,int j){ yx;R#8;b.  
int pivotIndex=(i+j)/2; @%G"i:HZ&  
file://swap ]JPPL4wAT  
SortUtil.swap(data,pivotIndex,j); uWtS83i  
2pNJWYW"  
int k=partition(data,i-1,j,data[j]); )bU")  
SortUtil.swap(data,k,j); fvMhq:Bu  
if((k-i)>1) quickSort(data,i,k-1); ',s7h"  
if((j-k)>1) quickSort(data,k+1,j); |A/_Qe|s2  
5N+(Gv[`"  
} s^R2jueR  
/** E^W*'D  
* @param data RW[<e   
* @param i \0T*msYQ  
* @param j H08YM P>dc  
* @return iSLf:  
*/ 6U9Fa=%>}  
private int partition(int[] data, int l, int r,int pivot) { -?`l<y(  
do{ N_[ Q.HD"  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); w/W?/1P>q  
SortUtil.swap(data,l,r); l"y9XO|  
} [ \n.[4gq"  
while(l SortUtil.swap(data,l,r); `3P62M<  
return l; C\@YH]  
} XXmu|h  
u N0fWj]  
} 3^yWpSC  
Mf13@XEo  
改进后的快速排序: 2MzFSmhc"  
Ki;5 =)  
package org.rut.util.algorithm.support; <KPx0g?=b  
?ML<o>OKg  
import org.rut.util.algorithm.SortUtil; /M `y LI  
,5uDEXpt{  
/** i1@gHk  
* @author treeroot ibUPd."W  
* @since 2006-2-2 ?Cfp=85ea!  
* @version 1.0 U zHhU*nW  
*/ R*eM 1  
public class ImprovedQuickSort implements SortUtil.Sort { 2#}IGZ`Yp/  
qA/ 3uA!z  
private static int MAX_STACK_SIZE=4096; QnLg P7Ft  
private static int THRESHOLD=10; Z*"t]L  
/* (non-Javadoc) TiEJyd`P  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jAHn`Bxz  
*/ _?LI0iIFx  
public void sort(int[] data) { <!XnUCtV  
int[] stack=new int[MAX_STACK_SIZE]; luog_;{h+  
bO3KaOC8N  
int top=-1;  HcS^3^Y  
int pivot; F4(U~n<  
int pivotIndex,l,r; D|'Z c &  
jt?%03iuk  
stack[++top]=0; _'dy$.g  
stack[++top]=data.length-1; a3IB, dr5P  
^@"f%3  
while(top>0){ GhA~PjZS  
int j=stack[top--]; O'U,|A  
int i=stack[top--]; o;I86dI6C  
iGNKf|8{  
pivotIndex=(i+j)/2; g]JI}O*5  
pivot=data[pivotIndex]; 4<Y[L'UaA@  
?|yJ #j1=  
SortUtil.swap(data,pivotIndex,j); #wuE30d  
lfd{O7L0b  
file://partition Z i&X ,K~  
l=i-1; Q_Sq  uuk  
r=j; UpBYL?+L  
do{ 0Hf-~6  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 481u1  
SortUtil.swap(data,l,r); N Z9,9  
} $& gidz/w  
while(l SortUtil.swap(data,l,r); w`f~Ht{wYR  
SortUtil.swap(data,l,j); !`E2O*g  
'-TFrNO;h  
if((l-i)>THRESHOLD){ o|E(_ Y4d  
stack[++top]=i; fltc dA  
stack[++top]=l-1; u)>*U'bM  
} c{ (%+  
if((j-l)>THRESHOLD){ rn*VL(Yd(  
stack[++top]=l+1; IWnW(>V  
stack[++top]=j; D"5~-9<  
} MRu+:Y=K  
1nG"\I5N}  
} rVmO/Y#Hx$  
file://new InsertSort().sort(data); y%Ah"UY  
insertSort(data); aKcV39brr  
} Q-CVq_\3I  
/** Gl1$W=pR:  
* @param data Ia" Mi+{  
*/ #2,L)E\G8e  
private void insertSort(int[] data) { ;yrcH+I$_  
int temp;  ]^%3Y  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); NPabM(<`  
} X~!?t }  
} -W vAmi  
} |8ZAE%/d  
` XY[ HK  
} THZ3%o=X  
>.>5%  
归并排序: 3E:<  
[-a /]  
package org.rut.util.algorithm.support; "E#%x{d  
!OemS 7{  
import org.rut.util.algorithm.SortUtil; ]z NL+]1_  
xSZw,  
/** kp"cHJNx  
* @author treeroot -7Wmq[L /  
* @since 2006-2-2 '.yr8  
* @version 1.0 VlvDodV  
*/ ypVr"fWB  
public class MergeSort implements SortUtil.Sort{ _~"3 LB  
?Kf@/jv  
/* (non-Javadoc) JOk`emle  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "5bk82."  
*/ Gu=bPQOj  
public void sort(int[] data) { ),|bP`V  
int[] temp=new int[data.length]; IC~D?c0H:  
mergeSort(data,temp,0,data.length-1); #k, kpL<a  
} L.[2l Q  
VtFh1FDI\  
private void mergeSort(int[] data,int[] temp,int l,int r){ r?*?iw2g  
int mid=(l+r)/2; d~%Rnic6*  
if(l==r) return ; bN)?szh&Y  
mergeSort(data,temp,l,mid); g`8|jg0]`I  
mergeSort(data,temp,mid+1,r); SNFz#*  
for(int i=l;i<=r;i++){ $!lxVZ>  
temp=data; &*~ WK  
} "zc!QHpSd  
int i1=l; Rwk|cqr  
int i2=mid+1; v-qS 'N 4  
for(int cur=l;cur<=r;cur++){ 7ac3N  
if(i1==mid+1) /8R1$7  
data[cur]=temp[i2++]; 9G9lSj5>  
else if(i2>r) '@bA_F(  
data[cur]=temp[i1++]; zvWQ&?&o2  
else if(temp[i1] data[cur]=temp[i1++]; 38^_(N  
else SQK6BEjE8  
data[cur]=temp[i2++]; [g_@<?zg  
} ] 2'~e,"O  
} TB\CSXb  
hJ :+*46  
} m? hX=  
ap!<8N  
改进后的归并排序: 5+J/Qm8{bb  
A`Nb"N$H13  
package org.rut.util.algorithm.support; IA'AA|v  
up?8Pq*  
import org.rut.util.algorithm.SortUtil;  'M{_S  
wVTo7o%U  
/** 7Ll(,i<,C  
* @author treeroot ?a}~yz#B(  
* @since 2006-2-2 :OM>z4mQ  
* @version 1.0 \I=:,cz*,  
*/ +tF,E^  
public class ImprovedMergeSort implements SortUtil.Sort { .^,vK7  
_{aVm&^kA  
private static final int THRESHOLD = 10; M 5h U.3.L  
}sZ]SE  
/* /k,p]/e  
* (non-Javadoc) l=yO]a\QZ  
* ADDpm-]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) as8<c4:v  
*/ mB\|<2  
public void sort(int[] data) { U?>cm`DBP  
int[] temp=new int[data.length]; qeYr=%)c  
mergeSort(data,temp,0,data.length-1); *`W82V  
} ZmDr$iU~  
&nYmVwi?"Q  
private void mergeSort(int[] data, int[] temp, int l, int r) { LO229`ARr|  
int i, j, k; n3w2&  
int mid = (l + r) / 2; ;L7<mU  
if (l == r) D~Su82 2  
return; |(fWT}tg  
if ((mid - l) >= THRESHOLD) >=bO@)[  
mergeSort(data, temp, l, mid); li[g =A,  
else d=pq+  
insertSort(data, l, mid - l + 1); sC j3h  
if ((r - mid) > THRESHOLD) T&%>/7I>  
mergeSort(data, temp, mid + 1, r); -T>`PJpJuL  
else Z.<B>MD8^  
insertSort(data, mid + 1, r - mid); MX34qJ9k  
H>B:jJf  
for (i = l; i <= mid; i++) { sXUM,h8$!+  
temp = data; f &H` h  
} G7yxCU(I\  
for (j = 1; j <= r - mid; j++) { Yr!3mU-Uvt  
temp[r - j + 1] = data[j + mid]; >9DgsA`'  
} AjpQb ~\  
int a = temp[l]; 1g@kHq  
int b = temp[r]; lUrchLoDt  
for (i = l, j = r, k = l; k <= r; k++) { rRMC< .=  
if (a < b) { vDemY"wz  
data[k] = temp[i++]; YG%Zw  
a = temp; 0y(d|;':  
} else { O/-xkzR*  
data[k] = temp[j--]; Y#G '[N>  
b = temp[j]; Vj_ $%0  
} ,70|I{,Km  
} .R1)i-^  
} uZNR]+Yu@  
5VI'hxU4Qg  
/** +VJl#sc/;  
* @param data k3Y>QN|q8  
* @param l -Fb/GZt|  
* @param i y ^YrGz.  
*/ S7V;sR"V2  
private void insertSort(int[] data, int start, int len) { tY7u\Y;^  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); %n( s;/_  
} jE{z4en  
} q>Y_I<;'g  
} ve$P=ZuM  
} OS3J,f}<=  
OIN]u{S  
堆排序: (GZm+?  
u3q!te  
package org.rut.util.algorithm.support; 7 >.^GD  
+ }^  
import org.rut.util.algorithm.SortUtil; TGg*(6'z  
=U:iR  
/** #xO`k1W.  
* @author treeroot 1{A 4_/R  
* @since 2006-2-2 X:DHz0S  
* @version 1.0 HLS^Ga,(  
*/ I(2ID +  
public class HeapSort implements SortUtil.Sort{ j*P@]&e7d  
sh0O~%]g  
/* (non-Javadoc) 1vobfZ-w9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y }0-&  
*/ /%.K`BMN  
public void sort(int[] data) { Y.-i;Mmu  
MaxHeap h=new MaxHeap(); NY_Oo!)3  
h.init(data); {r Gx*<e  
for(int i=0;i h.remove(); xH92=t-w  
System.arraycopy(h.queue,1,data,0,data.length); @x)z" )>  
} :`_wy-}V  
<)M?qkjb  
private static class MaxHeap{ '0[l'Dt'  
7n#0eska,  
void init(int[] data){ tJ 6:$dh  
this.queue=new int[data.length+1]; fd(>[RP?  
for(int i=0;i queue[++size]=data; *? c~7ru  
fixUp(size); I qma vnM#  
} {|a' =I#2  
} h.DQ6!?;s  
ieObo foD  
private int size=0; )xi|BqQz  
BV<LIrAS  
private int[] queue; B64%| S  
Y*4\K%e(  
public int get() { ~ejHA~QC  
return queue[1]; Bs^W0K$uBO  
} nHA2p`T  
:qI myaGQ  
public void remove() { 9!o:)99U  
SortUtil.swap(queue,1,size--); iK)w3S}k1y  
fixDown(1); )]v vp{  
} i^ 1P6B  
file://fixdown 8R)*8bb  
private void fixDown(int k) { :kgwKuhL  
int j; |gT$M _}  
while ((j = k << 1) <= size) { D|OX]3~  
if (j < size %26amp;%26amp; queue[j] j++; J)*y1   
if (queue[k]>queue[j]) file://不用交换 4H{L>e  
break; i<-#yL5  
SortUtil.swap(queue,j,k); @T1-0!TM')  
k = j; MYLq2g\  
} u'}DG#@-  
} Ff|?<\x0}A  
private void fixUp(int k) { iHTxD1 D+H  
while (k > 1) { eqXW|,zUm  
int j = k >> 1; a "8/y4Y  
if (queue[j]>queue[k]) W/fM0=!  
break; GAQVeL1  
SortUtil.swap(queue,j,k); t:W`=^  
k = j; ([s2F%S`@  
} |rsu+0Mtz  
} ='>k|s:  
+i{&"o4}  
} O(CUwk  
VYvHpsI  
} *S*;rLH9c  
%]d^B |  
SortUtil:  8DyE  
0YW<>Y`6  
package org.rut.util.algorithm; .{~ygHQ`f  
/SSl$  
import org.rut.util.algorithm.support.BubbleSort; 7(ZI]<  
import org.rut.util.algorithm.support.HeapSort; N9_9{M{  
import org.rut.util.algorithm.support.ImprovedMergeSort; ]l`?"X|^  
import org.rut.util.algorithm.support.ImprovedQuickSort; /Eu[7  
import org.rut.util.algorithm.support.InsertSort; `}s)0 /}6  
import org.rut.util.algorithm.support.MergeSort; u6|P)8?`  
import org.rut.util.algorithm.support.QuickSort; mR?OSeeB  
import org.rut.util.algorithm.support.SelectionSort; R$wo{{KX  
import org.rut.util.algorithm.support.ShellSort; s!uewS.  
Au@U;a4UU  
/** !%sj-RMvG  
* @author treeroot X`[or:cB  
* @since 2006-2-2 k'EP->r  
* @version 1.0 Z-Zox-I1}-  
*/ ,253'53W)  
public class SortUtil { 9qW^@5 m  
public final static int INSERT = 1; ^\J/l\n  
public final static int BUBBLE = 2; E2 #XXc  
public final static int SELECTION = 3; XP~4jOL]  
public final static int SHELL = 4; s:,BcVLx^  
public final static int QUICK = 5; Y[@$1{YS  
public final static int IMPROVED_QUICK = 6; m8#+w0p)  
public final static int MERGE = 7; nQb{/ TqC'  
public final static int IMPROVED_MERGE = 8; p e |k}{  
public final static int HEAP = 9; rWAJL9M  
,"5Fw4G6*  
public static void sort(int[] data) { O~Pb u[C  
sort(data, IMPROVED_QUICK); ?tg(X[h{S  
} 7l%O:M(\  
private static String[] name={ Qgf\gTF$r+  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" K%Jy?7 U  
}; L-",.U*;  
D'c, z[  
private static Sort[] impl=new Sort[]{ szGp<xv_p  
new InsertSort(), Tgc)'8A;BN  
new BubbleSort(), cT-XF  
new SelectionSort(), c2-NXSjsW  
new ShellSort(), gVEW*8  
new QuickSort(), Gd%KBb  
new ImprovedQuickSort(), 9!}&&]Q`  
new MergeSort(), 0Evq</  
new ImprovedMergeSort(), fMP$o3;  
new HeapSort() ="JLUq*]s  
}; !*'uPw:l2  
Sc`W'q^X  
public static String toString(int algorithm){ Si.3Je[q  
return name[algorithm-1]; &FW|O(]  
} *C}vy`X  
1-Sc@WXd  
public static void sort(int[] data, int algorithm) { q!t_qX7u  
impl[algorithm-1].sort(data); XSkx<"U*  
} t,)` Zu$  
,=.&  
public static interface Sort { R*VJe+5w  
public void sort(int[] data); E0o=  
} z%<Z#5_N  
&J,MJ{w6"  
public static void swap(int[] data, int i, int j) { 2 <y!3OeN  
int temp = data; ]KBzuz%  
data = data[j]; gR )xw)!  
data[j] = temp; ~kj1L@gy   
} W4Tuc:X5  
} ]SA]{id+  
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3+5=?,请输入中文答案:八 正确答案:八