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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。 3&M0@/  
插入排序: jHatUez4O  
b{-|q6  
package org.rut.util.algorithm.support; \21Gg%W5AE  
LqJV  
import org.rut.util.algorithm.SortUtil; NhF"%  
/** f61vE  
* @author treeroot =c&.I}^1L  
* @since 2006-2-2 FdEUZ[IT`{  
* @version 1.0 %Q]thv:  
*/ XA.1Y)  
public class InsertSort implements SortUtil.Sort{ DXO'MZon3  
\fI05GZ  
/* (non-Javadoc) OQ<;w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ze5#6Vzd&  
*/ wCv9VvF`  
public void sort(int[] data) { u:W/6QS  
int temp; 152s<lu1Z  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); lm&^`Bn)  
} gy|o#&e]%  
} s)-bOZi  
} ".( G,TW  
&><b/,]  
} tr/.pw6  
?GLCd7TP  
冒泡排序: ph!h8@e  
JHZjf7g$k  
package org.rut.util.algorithm.support; ~Ij/vyB_  
J#3[,~  
import org.rut.util.algorithm.SortUtil; MMD=4;X  
\xC#Zs[<  
/** .Xe_Gp"x  
* @author treeroot `0q=Z],  
* @since 2006-2-2 7z/O#Fbs  
* @version 1.0 4:b'VHW.  
*/ RwrRN+&s\  
public class BubbleSort implements SortUtil.Sort{ z?|bs?HKS  
8+Gwv SDU  
/* (non-Javadoc) >T0`( #Lm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #(+V&< K  
*/ s+&0Z3+  
public void sort(int[] data) { sP% b? 6  
int temp; TA:#K  
for(int i=0;i for(int j=data.length-1;j>i;j--){ WI&}94w  
if(data[j] SortUtil.swap(data,j,j-1); .V UnOdI  
} F1M:"-bda  
} }rs>B,=*k  
} RVs=s}|>*  
} a gL@A  
\ZE=WvnhZ  
} D eT$4c*:[  
,TB$D]u8  
选择排序: {/aHZ<I&^h  
Vr %ef:uVV  
package org.rut.util.algorithm.support; 1B~Z1w  
cb{"1z  
import org.rut.util.algorithm.SortUtil; I};*O6D`  
d:_;  
/** d1 kE)R  
* @author treeroot ~>~qA0m"m  
* @since 2006-2-2 f3>DmH#  
* @version 1.0 U. $Th_  
*/ 1O,8=,K2a  
public class SelectionSort implements SortUtil.Sort { S>j.i  
R)isWw4  
/* m] -cRf)9  
* (non-Javadoc) 3r,Kt&2$  
* #Oq.}x?i  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  |*-<G3@  
*/ <viC~=k;  
public void sort(int[] data) { > XM]UdP  
int temp; I-Ut7W  
for (int i = 0; i < data.length; i++) { *_}0vd  
int lowIndex = i; _bgv +/  
for (int j = data.length - 1; j > i; j--) { pW>{7pXn  
if (data[j] < data[lowIndex]) { PQh s^D  
lowIndex = j; !<~cjgdx  
} 0plX"NU  
} F>X<=YO0  
SortUtil.swap(data,i,lowIndex); kh#fUAt  
} fl2XI=[v4  
} ga S}>?qk  
\W= qqE]  
} fWi/mK3c  
N&Ho$,2s  
Shell排序: )t\aB_ =  
K" X" 2c1o  
package org.rut.util.algorithm.support; %9S0!h\  
5)hfI7{d  
import org.rut.util.algorithm.SortUtil; =]"I0G-s!  
"QiLu=Rq  
/** [9NrPm3d  
* @author treeroot x#R6Ez7  
* @since 2006-2-2 ?0+g.,9  
* @version 1.0 G\V*j$}!  
*/ &,{YfAxQ`  
public class ShellSort implements SortUtil.Sort{ Jo~fri([%Q  
0!$y]Gr  
/* (non-Javadoc) yq^Ma  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n%4/@M  
*/ _z 5W*..  
public void sort(int[] data) { +PKsiUJ|  
for(int i=data.length/2;i>2;i/=2){ x)eoz2E1  
for(int j=0;j insertSort(data,j,i); MPw?HpM  
} S3E5^n\\  
} $7i[7S4  
insertSort(data,0,1); 3Z&!zSK^  
} <dr2 bz  
D&~%w!  
/** Vry_X2  
* @param data IvI..#EzG  
* @param j \/V#,O  
* @param i X:g#&e_  
*/ 'V&Uh]>  
private void insertSort(int[] data, int start, int inc) { x',6VTz^  
int temp; F*>#Xr~/  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); "h7Dye  
} K,%CE ].  
} .V3e>8gw3  
} \^RKb-6n  
U F*R1{  
} P~iZae  
jiLJiYMg  
快速排序: "dvo@n|  
hCd? Kti  
package org.rut.util.algorithm.support; VYO1qj  
lCl5#L9  
import org.rut.util.algorithm.SortUtil; .q[}e);)  
V{A`?Jl6{  
/** ecQ,DOX|b  
* @author treeroot 10OkrNQ  
* @since 2006-2-2 uKvdL "  
* @version 1.0 mdEl CC0  
*/ i*@PywT"i3  
public class QuickSort implements SortUtil.Sort{ V'MY+#  
yBIX<P)vE'  
/* (non-Javadoc) yTZ o4c "  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cF8X  
*/ }^p<Y5{b  
public void sort(int[] data) { oM Z94 , 3  
quickSort(data,0,data.length-1); |\G^:V[.  
} ACZK]~Y'N*  
private void quickSort(int[] data,int i,int j){ VY+P c/b  
int pivotIndex=(i+j)/2; yO!M$aOn/  
file://swap J|%bRLX@>  
SortUtil.swap(data,pivotIndex,j); '\xE56v)F  
`.3@Ki~$#  
int k=partition(data,i-1,j,data[j]); /7:+.#Ag`  
SortUtil.swap(data,k,j); fmc\Li  
if((k-i)>1) quickSort(data,i,k-1); 5s`r&2 w  
if((j-k)>1) quickSort(data,k+1,j); )7o? }"I  
h,]VWG  
} .jk A'i@  
/** ;e/F( J  
* @param data 18Z1F  
* @param i kV4Oq.E  
* @param j 3JBXGT0gJ  
* @return e6J^J&`|4  
*/ pi/0~ke4"  
private int partition(int[] data, int l, int r,int pivot) { !jSgpIp  
do{ ()O&O+R|)  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); C1UU v=|  
SortUtil.swap(data,l,r); ugE!EEy[^  
} ubOXEkZ8N  
while(l SortUtil.swap(data,l,r); 2{vAs  
return l; ZILJXX4  
} "*F`,I3  
y1Z>{SDiq  
} [w|Klq5  
_6ck@  
改进后的快速排序: ,$> l[G;Bm  
LCtVM70  
package org.rut.util.algorithm.support; _N^w5EBC]  
&r4|WM/ec  
import org.rut.util.algorithm.SortUtil; s*<T'0&w0S  
)`R}@(r.  
/** Y_!+Y<x7v  
* @author treeroot Y68A+ B.  
* @since 2006-2-2 qIsf!1I?  
* @version 1.0 dpylJ2  
*/ 18QqZ,t  
public class ImprovedQuickSort implements SortUtil.Sort { m|{^T/kIbQ  
#5z0~Mg-X  
private static int MAX_STACK_SIZE=4096; GJr mK  
private static int THRESHOLD=10; :/$WeAg  
/* (non-Javadoc) `?3f76}h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f(~N+2}  
*/ X~D[CwA|`  
public void sort(int[] data) { $8%"bR;Hu  
int[] stack=new int[MAX_STACK_SIZE]; NjOUe?BQ  
R]&Csr#~  
int top=-1; e(|Z<6  
int pivot; -n"wXOx3  
int pivotIndex,l,r; oeZuvPCl  
%N fpEo  
stack[++top]=0; :W1?t*z:[  
stack[++top]=data.length-1; .'<K$:8@|  
H${LF.8  
while(top>0){ % ym};7'&b  
int j=stack[top--]; Q [rZ1z  
int i=stack[top--]; UF#!6"C@  
jga\Ry=nw  
pivotIndex=(i+j)/2; 9,`i[Dzp  
pivot=data[pivotIndex]; 1(IZ,*i  
P@vUQ  
SortUtil.swap(data,pivotIndex,j); v x/YWZ  
/3~L#jS  
file://partition %\T,=9tD\  
l=i-1; ?dCwo;~  
r=j; PRaVe,5a  
do{ n{sk  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); &|#[.ti1  
SortUtil.swap(data,l,r); B#jnM~fJz  
} xwof[BnEZ  
while(l SortUtil.swap(data,l,r); |`#fX(=  
SortUtil.swap(data,l,j); {>msE }L  
; /K6U  
if((l-i)>THRESHOLD){ #YE?&5t  
stack[++top]=i; &TQ~!ZMOR"  
stack[++top]=l-1; i l@>b  
} Z6i~Dy3  
if((j-l)>THRESHOLD){ PD.$a-t  
stack[++top]=l+1; S, AxrQc  
stack[++top]=j; [B)!  
} 5 k3m"*  
/u4RZ|&as  
} In96H`  
file://new InsertSort().sort(data); ;6[6~L%K}  
insertSort(data); 8$\j| mN  
} wPjq B{!Q  
/** ZxwrlaA  
* @param data '!7>*<  
*/ '%[ Y  
private void insertSort(int[] data) { goIv m:?  
int temp;  c2M  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {&IB[Y6  
} ;98b SR/  
} o&E8<e  
} 0HoHu*+FX  
aM;SE9/U  
} Y_:jc{?  
|di(hY|  
归并排序: S=!WFKcJR  
?`Yu~a{  
package org.rut.util.algorithm.support; .k]`z>uv  
(is',4^b  
import org.rut.util.algorithm.SortUtil; lTMY|{9  
s"`~Xnf  
/** m.m6.  
* @author treeroot nXLz<wE  
* @since 2006-2-2 j}ob7O&U'w  
* @version 1.0 0@-4.IHl  
*/ #:gl+  
public class MergeSort implements SortUtil.Sort{ [8sYEh  
KQNQ<OE 4  
/* (non-Javadoc) [q2:d^_FA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OlRXgJ  
*/ 4@{c K|  
public void sort(int[] data) { L?d?O  
int[] temp=new int[data.length]; }h45j84)  
mergeSort(data,temp,0,data.length-1); :C} I6v=  
} lK=Is v+  
j*?8w(!  
private void mergeSort(int[] data,int[] temp,int l,int r){ Jq &Hz$L|  
int mid=(l+r)/2; ,Zn6T"[$  
if(l==r) return ; {kk%_q  
mergeSort(data,temp,l,mid); //2O#Fg{/  
mergeSort(data,temp,mid+1,r); ?pW1}: z  
for(int i=l;i<=r;i++){ uS`}  
temp=data;  O>]i?  
} v}j5G, [-  
int i1=l; mufGv%U2  
int i2=mid+1; o{,I O!q  
for(int cur=l;cur<=r;cur++){ ,XEIg  
if(i1==mid+1) FprdP*/  
data[cur]=temp[i2++]; ]{6/6jl  
else if(i2>r) 6~%><C  
data[cur]=temp[i1++]; ? ;CIS$$r  
else if(temp[i1] data[cur]=temp[i1++]; RQQ' Wg  
else D#&9zR86F  
data[cur]=temp[i2++]; &>Ve4!i q  
} Hh^ "c}  
} =\%ER/  
mBErU6?X,A  
} (`dz3 7@*  
B<SE|~\2  
改进后的归并排序: Ux=~-}<-w  
#("M4}~  
package org.rut.util.algorithm.support; ih0a#PB8  
$UH:r  
import org.rut.util.algorithm.SortUtil; _gqqPny4$  
/Y y)=~t{  
/** p [C 9g  
* @author treeroot 5,gT|4|B\g  
* @since 2006-2-2 $\NqD:fgb  
* @version 1.0 ruGJZAhIA^  
*/ u4~+Bc_GL  
public class ImprovedMergeSort implements SortUtil.Sort { \.mVLLtG  
2]mV9B   
private static final int THRESHOLD = 10; <(jk}wa<  
00 x -  
/* n/5T{NfG  
* (non-Javadoc) jlj ge=#c2  
* 66pjWS {X  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Pjs=n7  
*/ (SRY(q  
public void sort(int[] data) { >;MJm  
int[] temp=new int[data.length]; Q<V(#)*  
mergeSort(data,temp,0,data.length-1); 61H_o7XXk  
} / rc[HbNg.  
k4V3.i!E  
private void mergeSort(int[] data, int[] temp, int l, int r) { oM!&S'M/  
int i, j, k; `Jc/ o=]  
int mid = (l + r) / 2; ?2&= +QaT  
if (l == r) dHIk3j-!  
return; Q)0KYKD+@  
if ((mid - l) >= THRESHOLD) GmR3 a  
mergeSort(data, temp, l, mid); e El)wZ,A  
else $,~Ily7w  
insertSort(data, l, mid - l + 1); ;-VZVp}Y  
if ((r - mid) > THRESHOLD) r"2lcNE  
mergeSort(data, temp, mid + 1, r); X=#us7W}  
else _ACN  
insertSort(data, mid + 1, r - mid); 1jd{AqHl  
VH]}{i"`  
for (i = l; i <= mid; i++) { yIKpyyC9H  
temp = data; _!o8s%9be  
} $!*>5".A  
for (j = 1; j <= r - mid; j++) { /3aW 0/^o  
temp[r - j + 1] = data[j + mid]; o9e8Oj&  
} T9V=#+8#"  
int a = temp[l]; Bn]=T  
int b = temp[r]; E_=F' sP?  
for (i = l, j = r, k = l; k <= r; k++) { $97O7j@  
if (a < b) { /8e}c`  
data[k] = temp[i++]; .1[.f}g$J  
a = temp; '{2]:  
} else { S#M8}+ZD,  
data[k] = temp[j--]; ,)[9RgsE  
b = temp[j]; b$DiDm  
} U&#` <R_0  
} VP A+/5TW  
} 9\.0v{&v  
eI:[o  
/** ? #rXc%F  
* @param data ,7j8+p|},  
* @param l G~5pMyOR  
* @param i |2l-s 1|y  
*/ -0CBMoe  
private void insertSort(int[] data, int start, int len) { INr1bAe$  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); teS>t!d  
} "/6#Z>y  
} ym{@w3"S  
} 5Qq/nUR  
} {C 5:as  
eP]y\S*P  
堆排序: #1haq[Uv7  
/iO"4%v  
package org.rut.util.algorithm.support; o5s6$\"  
vm|u~Yd,s  
import org.rut.util.algorithm.SortUtil; 8S#$'2sT  
X "7CN Td  
/** B`-uZ9k   
* @author treeroot Sn*s@RE\s  
* @since 2006-2-2 "?zWCH  
* @version 1.0 zj r($?  
*/ eV*QUjS~  
public class HeapSort implements SortUtil.Sort{ rQ* w3F?:  
iXm&\.%  
/* (non-Javadoc) &b#d4p6&l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U6/7EOW,  
*/ Jt5V{9:('  
public void sort(int[] data) { <=n;5hv:  
MaxHeap h=new MaxHeap(); bpBn3f`?*  
h.init(data); Z(6.e8fK  
for(int i=0;i h.remove(); tAN!LI+w  
System.arraycopy(h.queue,1,data,0,data.length); oUnb-,8n  
} 9$$  Ijf  
~Yd[&vpQ  
private static class MaxHeap{ ^rJTlh 9  
&pzL}/u  
void init(int[] data){ GPHb-  
this.queue=new int[data.length+1]; Ll=G+cw6P  
for(int i=0;i queue[++size]=data; Fl.?*KBz  
fixUp(size); V| Fo@  
} c)#7T<>*'  
} GG>53} 7{  
^)9/Wz _x  
private int size=0; "~ID.G|<  
SOR\oZ7  
private int[] queue; nqH[ y0  
[UXVL}t k  
public int get() { 2B$dT=G  
return queue[1]; }SWfP5D@  
} 9!jF$  
bQ>wyA+G&E  
public void remove() { %EU_OS(u.{  
SortUtil.swap(queue,1,size--); F8?,}5j  
fixDown(1); f0 g/`j@Up  
} FBl,Mky  
file://fixdown W\Pd:t  
private void fixDown(int k) { IB# ua:  
int j; "m^gCN}c  
while ((j = k << 1) <= size) { OT\D;Z"__I  
if (j < size %26amp;%26amp; queue[j] j++; ynA_Z^j  
if (queue[k]>queue[j]) file://不用交换 75;RAKGi  
break; Xd:{.AXW  
SortUtil.swap(queue,j,k); }T.>p#z  
k = j; 5 b rM..  
} H'3 pHb  
} S=P}Jpq?Y;  
private void fixUp(int k) { z+.G>0M  
while (k > 1) { VL*5  
int j = k >> 1; \9,lMK[b  
if (queue[j]>queue[k]) OulRqbL2  
break; 2T*kmDp  
SortUtil.swap(queue,j,k); "*#f^/LS  
k = j; eWqS]cM#  
} \{<ml n  
} D-@6 hWh~  
#tZ!D^GQHq  
} 6%p6BK6  
^ q ba<#e  
} di_UJ~  
fZf>>mu@r'  
SortUtil: H%m^8yW1  
X$==J St  
package org.rut.util.algorithm; {P?Ge  
8#$HKWUK  
import org.rut.util.algorithm.support.BubbleSort; BD]J/o  
import org.rut.util.algorithm.support.HeapSort; KLM6#6`  
import org.rut.util.algorithm.support.ImprovedMergeSort; z#RwgSPw6  
import org.rut.util.algorithm.support.ImprovedQuickSort; MX~h>v3_R4  
import org.rut.util.algorithm.support.InsertSort; 1^o})9  
import org.rut.util.algorithm.support.MergeSort; 2n>mISy+  
import org.rut.util.algorithm.support.QuickSort; !jl^__ .DR  
import org.rut.util.algorithm.support.SelectionSort; I`B ZZ-  
import org.rut.util.algorithm.support.ShellSort; W= NX$=il  
EUt2 S_2P  
/** z}J~X%}e  
* @author treeroot !Yo2P"  
* @since 2006-2-2 _K?v^oM#  
* @version 1.0 -ioO8D&!  
*/ gAvNm[=wD2  
public class SortUtil { :@ &e~QP(  
public final static int INSERT = 1; 2A  
public final static int BUBBLE = 2; ~L&z? 'V  
public final static int SELECTION = 3; |goBIp[  
public final static int SHELL = 4; Ow?~+) 4  
public final static int QUICK = 5; a?Fz&BE  
public final static int IMPROVED_QUICK = 6; 1y[~xxgE  
public final static int MERGE = 7; R|Bi%q|4P  
public final static int IMPROVED_MERGE = 8; t@lTA>;U@  
public final static int HEAP = 9; " AvEo  
o&q:b9T  
public static void sort(int[] data) { MA tF,  
sort(data, IMPROVED_QUICK); wIRU!lIF9  
} dW/(#KP/+  
private static String[] name={ )%Xp?H_  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" TQt[he$O  
}; d^?e*USh  
|o eg'T  
private static Sort[] impl=new Sort[]{ UBv#z&@[  
new InsertSort(), H '5zl^8I  
new BubbleSort(), -"yma_  
new SelectionSort(), -GL.8" c[  
new ShellSort(), b6e 2a/x  
new QuickSort(), HHyN\  
new ImprovedQuickSort(), <AVWT+,  
new MergeSort(), 'GW~~UhdW  
new ImprovedMergeSort(), #lFsgb  
new HeapSort()  1^hG}#6_  
}; s;<]gaonB_  
rr1,Ijh{D  
public static String toString(int algorithm){ F'<XB~ &o  
return name[algorithm-1]; 7zQGuGo(  
} l66 QgPA  
G| &$/]~  
public static void sort(int[] data, int algorithm) { %j0c|u  
impl[algorithm-1].sort(data); agoMsxI9  
} F$v^S+Ch  
cPL6(&7  
public static interface Sort { l}S96B  
public void sort(int[] data); 3 P\4K  
} J'#o6Ud  
SPT x-b[  
public static void swap(int[] data, int i, int j) { =`}|hI   
int temp = data; <vg|8-,#m  
data = data[j]; Ktuv a3=>N  
data[j] = temp; pTQ7woj}  
} _NuHz  
} 2MXg)GBcU>  
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