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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。 hoD[wAC  
插入排序: [F>n!`8  
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package org.rut.util.algorithm.support; FUTyx"   
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import org.rut.util.algorithm.SortUtil; ?[>BssW  
/** :#!F 7u  
* @author treeroot $gD(MKR)~  
* @since 2006-2-2 t;a}p_>  
* @version 1.0 s7)# NT2  
*/ EpoQV^ Ey  
public class InsertSort implements SortUtil.Sort{ $lG--s  
AdN= y8T  
/* (non-Javadoc) @ :   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C` 1\$U~%  
*/ DkMC!Q\  
public void sort(int[] data) { @SVEhk#  
int temp; Rx"VscB6z  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); fS$Yl~-m?  
} $;`2^L  
} U-^S<H  
} G?/8&%8  
1.OXkgh  
} Y<$"]@w  
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冒泡排序: zm^p7&ak$  
c.me1fGn  
package org.rut.util.algorithm.support; 6`$z*C2{  
U>M>FZ  
import org.rut.util.algorithm.SortUtil; -3XnK5  
Z_ *ZUN?B  
/** w7ABnX  
* @author treeroot K/LaA4  
* @since 2006-2-2 =VI`CBQ/Um  
* @version 1.0 -){^ Q:u  
*/ oIR%{`3"I  
public class BubbleSort implements SortUtil.Sort{ 58gt*yVu  
1XKIK(l  
/* (non-Javadoc) Z.Y8z#[xg  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $HnD|_*  
*/ lV*&^Q8.  
public void sort(int[] data) { _f2iz4  
int temp; Fe>#}-`  
for(int i=0;i for(int j=data.length-1;j>i;j--){ O!cO/]<  
if(data[j] SortUtil.swap(data,j,j-1); "lj:bxM2C  
} AE@Rn(1.  
} T=KrT7  
} NZ? =pfK\s  
} RoXOGVo  
;0}"2aGY  
} Z"8cGN'  
9*Mg<P"  
选择排序: :95_W/l  
-8J@r2\  
package org.rut.util.algorithm.support; mp$II?hZ*  
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import org.rut.util.algorithm.SortUtil; #+Gs{iXr  
o+23?A~+  
/** YO4ppL~xe  
* @author treeroot  [ ^ \)  
* @since 2006-2-2 nQ*oOxe|X  
* @version 1.0 FQ&VM6_  
*/ SxQDqoA~  
public class SelectionSort implements SortUtil.Sort { H ;}ue  
C2%3+  
/* *m Tc4&*  
* (non-Javadoc) Xpz-@fqKdf  
* .TU15AAc  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8pKPbi;(2  
*/ !LSWg:Ev+  
public void sort(int[] data) { |&*rSp2iH  
int temp; _5 -"<  
for (int i = 0; i < data.length; i++) { T{2//$T?  
int lowIndex = i; jtCob'n8  
for (int j = data.length - 1; j > i; j--) { <^$b1<@  
if (data[j] < data[lowIndex]) { GdwHm  
lowIndex = j; gM]/Y6 *$b  
} \FX3=WW  
} ^g"6p#S=n  
SortUtil.swap(data,i,lowIndex); ]o[HH_`s@  
} NY w(hAPv  
} ~$9"|  
$w}aX0dK&  
} % ieAY-<"  
m`6`a|Twp$  
Shell排序: 5w%9b  
V^H47O;VC  
package org.rut.util.algorithm.support; 9GOyVKUv  
3Jit2W4  
import org.rut.util.algorithm.SortUtil; Xq$0% WjG  
C/#/F#C  
/** 4h@of'  
* @author treeroot BU .G~0  
* @since 2006-2-2 qoq<dCt3  
* @version 1.0 1Ee>pbd  
*/ C8SNSeg  
public class ShellSort implements SortUtil.Sort{ dNmX<WXG  
hIHO a  
/* (non-Javadoc) _$x *CP0(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C_&tOt  
*/ 0a;zT O/"v  
public void sort(int[] data) { 4ov~y1Da)  
for(int i=data.length/2;i>2;i/=2){ RLr-xg$K-t  
for(int j=0;j insertSort(data,j,i); dz DssAHy  
} )7TTRL  
} r+obm)Qtp  
insertSort(data,0,1); v<4X;4p^  
} jtJU 5Q  
O~1p]j  
/** UzRF'<TWf  
* @param data S!c@6&XJm?  
* @param j Lg53 Ms%  
* @param i <0MUn#7'  
*/ x@x@0k`A2  
private void insertSort(int[] data, int start, int inc) { :\cJ vm  
int temp; [r~l O@  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 4iPg_+  
} UY^f|f&  
} CF4y$aC#  
} 7m$/.\5  
e1a%Rj~  
} U%olH >1K  
[C#pMLp,~  
快速排序: =1uI >[aN  
n*|-"'j  
package org.rut.util.algorithm.support; Fs~-exY1  
"R]K!GUU  
import org.rut.util.algorithm.SortUtil; `hhG^ O_  
u-<s@^YG  
/** L~zet-3UNf  
* @author treeroot J)+eEmrU  
* @since 2006-2-2 +d15a%^`  
* @version 1.0 ~-zC8._w3r  
*/ (\_d'Js(;  
public class QuickSort implements SortUtil.Sort{ a+Nd%hoe  
3s Nq3I  
/* (non-Javadoc) "*WXr$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hWJc A.A  
*/ N:zSJW`1  
public void sort(int[] data) { 1 ErYob.p  
quickSort(data,0,data.length-1); y->iv%  
} h Nwb.[  
private void quickSort(int[] data,int i,int j){ %dQX d ]  
int pivotIndex=(i+j)/2; w,$17+]3  
file://swap z AIC5fvu  
SortUtil.swap(data,pivotIndex,j); S^.=j oI  
:zoX Xo  
int k=partition(data,i-1,j,data[j]); 'LI)6;Yc  
SortUtil.swap(data,k,j); Plv+mb  
if((k-i)>1) quickSort(data,i,k-1); w9BH>56/"  
if((j-k)>1) quickSort(data,k+1,j); 2y,wN"qH*  
e76)z; '  
} vUA,`  
/** }2{#=Elh  
* @param data XUHY.M  
* @param i 19DW~kvYk  
* @param j .j.=|5nVo4  
* @return |F`'m":$m  
*/ V-|}.kOH2  
private int partition(int[] data, int l, int r,int pivot) { '` "&RuB  
do{  0]HI c  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Wov_jVdN\  
SortUtil.swap(data,l,r); ZG|T-r;~  
} c9'b `#'  
while(l SortUtil.swap(data,l,r); Ws@s(5r  
return l; x@)u:0  
} HmKE>C/  
b/`' ?| C  
} j|9 2 g  
3WHH3co[  
改进后的快速排序:  w4mL/j  
04TV. /uA  
package org.rut.util.algorithm.support; 9|,AhyhO  
C09@2M'  
import org.rut.util.algorithm.SortUtil; 5=\b+<pE  
YVi]f2F%  
/** NgKNT}JDv  
* @author treeroot #e[5O| V~  
* @since 2006-2-2 i\b2P2 `B  
* @version 1.0 MaM7u:kD#  
*/ a6C ~!{'nW  
public class ImprovedQuickSort implements SortUtil.Sort { n_j[hA  
wim}}^H  
private static int MAX_STACK_SIZE=4096; .u&g2Y  
private static int THRESHOLD=10; jC=_>\<|X*  
/* (non-Javadoc) N 2\,6<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1^mO"nX  
*/ ijfT!W  
public void sort(int[] data) { mvxvX!t  
int[] stack=new int[MAX_STACK_SIZE]; Hl51R"8o  
 R !HL+  
int top=-1; j~0hAKHG  
int pivot; z#b6 aP  
int pivotIndex,l,r; d!cx%[  
li?Gb1  
stack[++top]=0; GzX@Av$  
stack[++top]=data.length-1; S6uBk"V!  
O #"O.GX<  
while(top>0){ $oz ZFvJF  
int j=stack[top--]; (msJ:SG  
int i=stack[top--]; &%<G2x$  
ZZUCwczI  
pivotIndex=(i+j)/2; uWSG+  
pivot=data[pivotIndex]; "cZ.86gG`:  
AiuF3`Xa  
SortUtil.swap(data,pivotIndex,j); 3-0Y<++W3>  
vnE,}(M  
file://partition 3mWN?fC  
l=i-1; *hba>LZ  
r=j; H4U;~)i  
do{ rHznXME$wZ  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); /C"E*a  
SortUtil.swap(data,l,r); %O-wMl  
} G7u7x?E:B`  
while(l SortUtil.swap(data,l,r); Y (Q8P{@(  
SortUtil.swap(data,l,j); YAD9'h]d\  
3JwmLGj}  
if((l-i)>THRESHOLD){ m T;z `*  
stack[++top]=i; ufmFeeg  
stack[++top]=l-1; lxbZM9A2  
} l\H9Io3  
if((j-l)>THRESHOLD){ Z=ho7i  
stack[++top]=l+1; TAP/gN'  
stack[++top]=j; Rh39x-`Z  
} "dIoIW  
a,X3=+_K  
} `y4+OXZ^  
file://new InsertSort().sort(data); C M(g4fh  
insertSort(data); iIg_S13  
} Z"A:^jZ<s  
/** {"s8X(#_sC  
* @param data 1cPi>?R:  
*/ i^yQ; 2 -  
private void insertSort(int[] data) { w] VvH"?  
int temp; T ^uBMDYe  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); *<KY^;  
} Li}yK[\]  
} a83o (9  
} <=p"c k@  
FYzl-7!Y  
} A\:M}D-(  
w1.~N`g$  
归并排序: ~&g:7f|X  
*fl1 =Rfr  
package org.rut.util.algorithm.support; b8O:@j2  
JAYom%A"  
import org.rut.util.algorithm.SortUtil; wI)W:mUZZ  
]RV6( |U4_  
/** 3=` UX  
* @author treeroot K}6}Opr,Tt  
* @since 2006-2-2 _uDtRoI8  
* @version 1.0 @qeI4io-n  
*/ kj>XKZL10  
public class MergeSort implements SortUtil.Sort{ ?P}7AF A(W  
p< XjiRq  
/* (non-Javadoc) OA[w|Tt  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .iw+ #  
*/ zdtzR<X   
public void sort(int[] data) { {R(q7ALR  
int[] temp=new int[data.length]; @D%VV=N~[  
mergeSort(data,temp,0,data.length-1); 6x_8m^+m  
} dP )YPy_`  
[mX\Q`)QP  
private void mergeSort(int[] data,int[] temp,int l,int r){ 07n=H~yU  
int mid=(l+r)/2; W Qe>1   
if(l==r) return ; 5'@}8W3b  
mergeSort(data,temp,l,mid); yVSJn>l!  
mergeSort(data,temp,mid+1,r); W;2y.2*  
for(int i=l;i<=r;i++){ (ue;O~  
temp=data; /6g*WX2P1  
} 5<9}{X+@o  
int i1=l; o d!TwGX  
int i2=mid+1; 7&2xUcsz)  
for(int cur=l;cur<=r;cur++){ Dzb@H$BQ7  
if(i1==mid+1) ="MG>4j3.F  
data[cur]=temp[i2++]; zvE]4}VL?  
else if(i2>r) n{|~x":9V  
data[cur]=temp[i1++]; " @.hz@>  
else if(temp[i1] data[cur]=temp[i1++]; Yf|+p65g  
else Xq9%{'9  
data[cur]=temp[i2++]; fy7]I?vm@  
} od$Cm5  
} I/t2c=f  
~|riFp=J  
} 0&zp9(G5  
PE-Vx RN)  
改进后的归并排序: -GQ`n01  
 $33wK  
package org.rut.util.algorithm.support; wTqgH@rGtR  
Ymx/N+Jl  
import org.rut.util.algorithm.SortUtil; *&!&Y*Jzg  
MK,#"Ty}zK  
/** FK>8(M/  
* @author treeroot TtlZum\  
* @since 2006-2-2 uPt({H  
* @version 1.0 tK1P7pbC8r  
*/ j%0D:jOY]  
public class ImprovedMergeSort implements SortUtil.Sort { PU[] Nw  
3 (jI  
private static final int THRESHOLD = 10; [/\}:#MLe  
bvi Y.G3  
/* EQ\/I( =l  
* (non-Javadoc) =56O-l7T*w  
* ELPzqBI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5!-'~W  
*/ ZE#A?5lb  
public void sort(int[] data) { /a Nlr>^  
int[] temp=new int[data.length]; sZA7)Z`7  
mergeSort(data,temp,0,data.length-1); L~=h?C<  
} c#Y/?F2p  
F{v>   
private void mergeSort(int[] data, int[] temp, int l, int r) { J.35Ad1hM  
int i, j, k; ]9F$/M#  
int mid = (l + r) / 2; xbsp[0I,  
if (l == r) 9n%vz@X  
return; Gg8F>y<[R  
if ((mid - l) >= THRESHOLD) l*^c?lp)  
mergeSort(data, temp, l, mid); .liVlo@  
else  YH@p\#Y  
insertSort(data, l, mid - l + 1); <BEM`2B  
if ((r - mid) > THRESHOLD) /{|JQ'gqX  
mergeSort(data, temp, mid + 1, r); ,'Zs")Ydp  
else V\vt!wBcB  
insertSort(data, mid + 1, r - mid); IZn|1X?}\s  
IN~Q(A]Z%  
for (i = l; i <= mid; i++) { 7a\at)q/y  
temp = data; [2ez"4e  
} Ia %> c  
for (j = 1; j <= r - mid; j++) { ,=jwQG4wq  
temp[r - j + 1] = data[j + mid]; i_Ol vuy~  
} ~U}0=lRVS  
int a = temp[l]; a'r8J~:jy  
int b = temp[r]; usc"m huQ  
for (i = l, j = r, k = l; k <= r; k++) { n|q $=jE  
if (a < b) { %=e^MN1  
data[k] = temp[i++]; Z4KYVHD,  
a = temp; =^3 Z L  
} else { OiI29  
data[k] = temp[j--]; %m)vQ\Vtx  
b = temp[j]; *sz:c3{_  
} | $  
} V(wm?Cc]  
} Z}$wvd  
~T">)Y~+xI  
/** (J} tCqP  
* @param data E?v:7p<  
* @param l /3#)  
* @param i K-<<s  
*/ #:[^T,YD0  
private void insertSort(int[] data, int start, int len) { q|h#J}\  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); x`n7D  
} +@G#Z3;l!  
} (}*1,N!#  
} M$,4B  
} AO[/-Uij  
djmd @{Djt  
堆排序: (_IPz)F  
Z@(m.&ZRx  
package org.rut.util.algorithm.support; ((Uw[8#2 `  
7fE U5@  
import org.rut.util.algorithm.SortUtil; {?X:?M_  
y8%QS*  
/** tK7v&[cI  
* @author treeroot wjy<{I  
* @since 2006-2-2 ]Ub"NLYV  
* @version 1.0 0H!J  
*/ -RI&uFqOI  
public class HeapSort implements SortUtil.Sort{ :yxP3e%rp  
b,hRk1  
/* (non-Javadoc) xlIVLv6dO  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dj-/%MU  
*/ *jCHv  
public void sort(int[] data) { &a8%j+j  
MaxHeap h=new MaxHeap(); zt!)7HBo  
h.init(data); =W[M=_0u  
for(int i=0;i h.remove(); JIatRc?g  
System.arraycopy(h.queue,1,data,0,data.length); !(A<  
} gk hmQd  
,76Q*p  
private static class MaxHeap{ ?uh%WN6nU]  
=[do([A  
void init(int[] data){ aE(DNeG-H  
this.queue=new int[data.length+1]; %_ (Xn  
for(int i=0;i queue[++size]=data; ;.+C  
fixUp(size); ,Jrm85 oG  
} {iXQUj  
} )6b`1o!7  
0g'MF  S  
private int size=0; 6qR5A+|;  
I+eKuWB  
private int[] queue; pN=>q <]L  
bt=z6*C>A  
public int get() { yRy^'E~  
return queue[1]; Uc<BLu;  
} \ v2-}jU(  
^^z_[Ih  
public void remove() { `|p8zV  
SortUtil.swap(queue,1,size--); j6GR-WQ]t  
fixDown(1); p}]K0F!  
} 0u}+n+\g  
file://fixdown sq_ yu(  
private void fixDown(int k) { eNDc220b  
int j; "N3!!3  
while ((j = k << 1) <= size) { TUN6`/"  
if (j < size %26amp;%26amp; queue[j] j++; O[+\` 63F=  
if (queue[k]>queue[j]) file://不用交换 vyBx|TR  
break; eWOZC(I*z  
SortUtil.swap(queue,j,k); v8U&{pD,  
k = j; d1}cXSQ1T  
} >)t-Zh:n  
} |U`A So  
private void fixUp(int k) { ST1;i5   
while (k > 1) { >@tJ7m M  
int j = k >> 1; &SMM<^P.  
if (queue[j]>queue[k]) $Zn>W@\  
break; :Qu.CvYF  
SortUtil.swap(queue,j,k); . efbORp  
k = j; ~,m5dP#[bV  
} ?$@E}t8g\  
} 8;i'dF:)  
Dc9Fb^]QOG  
} =AP0{  
[{PmU~RMYf  
} Iu ve~ugO  
3Vk<hBw2  
SortUtil: xzw2~(lo  
0zpA<"S  
package org.rut.util.algorithm; b"(bT6XO!  
$Yj4&Two<  
import org.rut.util.algorithm.support.BubbleSort; *5mJA -[B+  
import org.rut.util.algorithm.support.HeapSort; T5eJIc3a"  
import org.rut.util.algorithm.support.ImprovedMergeSort; H,(4a2zx  
import org.rut.util.algorithm.support.ImprovedQuickSort; LHMA-0$?)  
import org.rut.util.algorithm.support.InsertSort; u}-)ywX  
import org.rut.util.algorithm.support.MergeSort; v*&WqVg  
import org.rut.util.algorithm.support.QuickSort; Va$JfWef  
import org.rut.util.algorithm.support.SelectionSort; s+9b.  
import org.rut.util.algorithm.support.ShellSort; 0Wb3M"#9<  
YK V"bI  
/** yK>s]65&  
* @author treeroot >mMmc!u>G  
* @since 2006-2-2 V 9;O1  
* @version 1.0 ;F:Qz^=.a  
*/ ejpSbVJ  
public class SortUtil { Bgs,6:  
public final static int INSERT = 1; ~}Z'/ zCZf  
public final static int BUBBLE = 2; r12e26_Ab  
public final static int SELECTION = 3; 2{01i)2y  
public final static int SHELL = 4; oz'^.+uvE  
public final static int QUICK = 5; m }\L i]  
public final static int IMPROVED_QUICK = 6; MC_i"P6a  
public final static int MERGE = 7; ]GiDfYs7%  
public final static int IMPROVED_MERGE = 8; K 5AArI  
public final static int HEAP = 9; Ym wb2]M  
=k2"1f~e  
public static void sort(int[] data) {  s x)x7  
sort(data, IMPROVED_QUICK); tC&jzN"  
} |DUOyQ  
private static String[] name={ nm`}Z'&)  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap"  WYW@%t  
}; 9R N ge;*  
KV|ywcGhT  
private static Sort[] impl=new Sort[]{ d[&Ah~,  
new InsertSort(), kOV6O?h  
new BubbleSort(), ;'oi7b  
new SelectionSort(), $ItPUYi";  
new ShellSort(), oN[# C>#(  
new QuickSort(), y*j8OA.S  
new ImprovedQuickSort(), 78O5$?b;#  
new MergeSort(), * oru;=D@8  
new ImprovedMergeSort(), H8$";T(I  
new HeapSort() |"Fm<  
}; QD^"cPC)mM  
t_iZ\_8  
public static String toString(int algorithm){ ~p$ncIr2Q  
return name[algorithm-1]; W4S]2P>T  
} 9|2LuHQu+  
~c'R7E&Bfa  
public static void sort(int[] data, int algorithm) { eQsoZQA1  
impl[algorithm-1].sort(data); ixJwv\6Y  
} m@y_Wt  
4(p,@e31  
public static interface Sort { :snn-e0l  
public void sort(int[] data); }>m3V2>[  
} *Vp$#Rb  
D}K/5iU]a  
public static void swap(int[] data, int i, int j) { lPn&,\9@~  
int temp = data; V5]:^=  
data = data[j]; ^j g{MTa  
data[j] = temp; dMoN19F  
} *Bx' g| u  
} o88Dz}a  
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10+5=?,请输入中文答案:十五