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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。 dR>$vbjh1Z  
插入排序: %< ;u JP K  
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package org.rut.util.algorithm.support; A? jaS9 &)  
 xi<}n#  
import org.rut.util.algorithm.SortUtil; >D##94PZ  
/** afaQb  
* @author treeroot {#@[ttw$U  
* @since 2006-2-2 dci,[TEGu  
* @version 1.0 K'Wv$[~Dc  
*/ S+eu3nMq  
public class InsertSort implements SortUtil.Sort{ dF! B5(  
p}I\H ^"8+  
/* (non-Javadoc) Q>\DM'{:4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FW3E UC)P  
*/ 6_rgRo&  
public void sort(int[] data) { e8_EB/)_Z  
int temp; I3Z\]BI  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); i-WP#\s  
} y fuH  
} v3n T@r a'  
}  fOsvOC  
+g1+,?cU  
} lFA-T I&  
I+^iOa  
冒泡排序: ]H`pM9rC  
+uNMyVH  
package org.rut.util.algorithm.support; z~2;u 5S&  
>wYmx4W>  
import org.rut.util.algorithm.SortUtil; By*YBZ  
{SZv#MrK  
/** K-c>J uv&,  
* @author treeroot z^/9YzA!6  
* @since 2006-2-2 gCL}Ba  
* @version 1.0 U: <  
*/ .UN?Ak*R  
public class BubbleSort implements SortUtil.Sort{ ofYZ! -V  
RA+M.  
/* (non-Javadoc) gHXvmR"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BOdlz#&s  
*/ Hy'EbQ  
public void sort(int[] data) { cs:?Wq ^  
int temp; Az?^4 1r8  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ^H&`e"|R9  
if(data[j] SortUtil.swap(data,j,j-1); CqX*.j{  
} ;kG"m7-/  
} k0b6X5  
} GJ?J6@|  
} 'w/ S6j  
B1Z;  
} olHmRJ  
-Vmp6XY3q  
选择排序: a=B $L6*4  
mgq4g  
package org.rut.util.algorithm.support; 0uGTc[^^M  
3^)c5kcI  
import org.rut.util.algorithm.SortUtil; uE%2kB*]  
|@'K]$vZ*  
/** I34 1s0  
* @author treeroot ),%@X  
* @since 2006-2-2 ! bwy/A  
* @version 1.0 XZTH[#MqeI  
*/ \2Q#'  
public class SelectionSort implements SortUtil.Sort { \z@ :OR,  
J'I1NeK  
/* :pvVm>  
* (non-Javadoc) W:}t%agis  
* x.I?)x!C'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lm{4x~y$h  
*/ |$GPJaNqa  
public void sort(int[] data) { &EC8{.7  
int temp; =""5 c  
for (int i = 0; i < data.length; i++) { O^3XhTW^\~  
int lowIndex = i; -_Z  
for (int j = data.length - 1; j > i; j--) { A=D G+z''  
if (data[j] < data[lowIndex]) { *~UK5Brf1  
lowIndex = j; |uM=pm;H  
} m&MZn2u[4i  
} 6>'>BamX  
SortUtil.swap(data,i,lowIndex); *oh,Va  
} &TN.6Hm3  
} ?'tFTh  
g/i.b&  
} cA90FqUH  
`0u)/s$  
Shell排序: iqWkhJphv  
uy|]@|J  
package org.rut.util.algorithm.support; BG1hk!  
0OtUb:8LX  
import org.rut.util.algorithm.SortUtil; Izfq`zS+\s  
#zb67mg~  
/** 1 a%1C`d  
* @author treeroot  ftV~!r  
* @since 2006-2-2 oRmA\R*  
* @version 1.0 1_@vxi~aW_  
*/ ,GtN6?  
public class ShellSort implements SortUtil.Sort{ &o`LT|*m  
9SU/ 86|N  
/* (non-Javadoc) FaaxfcIfkw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E6?0/"  
*/ BMn`t@!x  
public void sort(int[] data) { raR=k!3i  
for(int i=data.length/2;i>2;i/=2){ 0p*Oxsy  
for(int j=0;j insertSort(data,j,i); AbX#wpp!  
} wZj`V_3  
} r;"Qu  
insertSort(data,0,1); Rf{YASPIw&  
} iW[%|ddk  
fz+dOIU3\L  
/** ?:7$c  
* @param data  Q 6r  
* @param j :;&3"-  
* @param i uJ3*AO  
*/ D@ BP<   
private void insertSort(int[] data, int start, int inc) { \.=,}sV2Z  
int temp; ?{OU%usQwE  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 8`|Z9umW*  
} Rvj[Csgi  
} {@t6[g++  
} #0Z%4WQ  
V$ " ]f6  
} MX|@x~9W  
"OrF81  
快速排序: 5RKs 2 eV  
#*"I?B/fd8  
package org.rut.util.algorithm.support; r <2&_$|  
V~QOl=`K:  
import org.rut.util.algorithm.SortUtil; o"qG'\x  
2=n,{rkmj%  
/** ?|GwuG8g  
* @author treeroot I%mGb$ Q  
* @since 2006-2-2 o4YF,c+>q  
* @version 1.0 [qxDCuxq  
*/ LiJ./  
public class QuickSort implements SortUtil.Sort{ 3nx*M=  
~W_ T3@  
/* (non-Javadoc) xv_Z$&9e>l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EV R>R  
*/ ;4*mUD6  
public void sort(int[] data) { KN.WTaO  
quickSort(data,0,data.length-1); m3`J9f,c/  
} @-O%u* %J  
private void quickSort(int[] data,int i,int j){ +GNXV-S  
int pivotIndex=(i+j)/2; 9lqD~H.  
file://swap 7C~g?1  
SortUtil.swap(data,pivotIndex,j); 3o_@3-Y%  
*>jJ<8!  
int k=partition(data,i-1,j,data[j]); JiX-t\V~  
SortUtil.swap(data,k,j); oox;8d4}y  
if((k-i)>1) quickSort(data,i,k-1); =qww|B92  
if((j-k)>1) quickSort(data,k+1,j); lkQ(?7  
E>YE3-]  
} 9gETWz(3I  
/** &C6*"JZ4  
* @param data a=*JyZ.2  
* @param i _Hv@bIL'  
* @param j @[O|n)7  
* @return S\6.vw!'  
*/ .s3y^1C  
private int partition(int[] data, int l, int r,int pivot) { W;.L N<bx  
do{ X>eFGCz}I  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); g`41d  
SortUtil.swap(data,l,r); ,veI'WHMB  
} eMUt%zvb  
while(l SortUtil.swap(data,l,r); f|{&Y2h(R  
return l; 28lor&Cc  
} ^dKtUH/78G  
_[y<u})  
} IGI$,C  
,BlNj^5f  
改进后的快速排序: 1j!{?t ?  
&xS] ;Fr  
package org.rut.util.algorithm.support; !InC8+be  
rf =Wq_  
import org.rut.util.algorithm.SortUtil; t0 )XdIl8  
4l_~-Peh  
/** TL: 6Pe  
* @author treeroot G]gc*\4  
* @since 2006-2-2 N[sJ5oF  
* @version 1.0 l  !JTM  
*/ jR^_1bu  
public class ImprovedQuickSort implements SortUtil.Sort { KH9D},  
DP!~WkU~  
private static int MAX_STACK_SIZE=4096; Z':w X  
private static int THRESHOLD=10; {A{sRT=%  
/* (non-Javadoc) 8 g3?@i  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Di &XDW/  
*/ u X+ YH  
public void sort(int[] data) { 1raq;^e9  
int[] stack=new int[MAX_STACK_SIZE]; 70N Lv  
B[ r04YGh  
int top=-1; '~AR|8q?  
int pivot; /(DnMHn\  
int pivotIndex,l,r; :+meaxbu  
ed$w5dv  
stack[++top]=0; x\K,@  
stack[++top]=data.length-1; ^NFL3v8  
jL:GP}I=  
while(top>0){ M[7$F&&n  
int j=stack[top--]; *+j r? |  
int i=stack[top--]; uS5ADh  
N$<R6DU]K  
pivotIndex=(i+j)/2; lZ?YyRsa6&  
pivot=data[pivotIndex]; o}y(T07n  
GyQvodqD  
SortUtil.swap(data,pivotIndex,j); HD>UTX`&mc  
1 abQoe  
file://partition @8 lT*O2j  
l=i-1; Uh3N#O  
r=j; gh.+}8="  
do{ y`J8hawp  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 1n~^@f#`  
SortUtil.swap(data,l,r); sv+ 6#  
} FR6 PY  
while(l SortUtil.swap(data,l,r); O@`KG ZEPY  
SortUtil.swap(data,l,j); WUGFo$ xA  
yMJ(Sf  
if((l-i)>THRESHOLD){ F?b"Rv  
stack[++top]=i; YGOhUT |  
stack[++top]=l-1; Z~ u3{  
} >lF@M-  
if((j-l)>THRESHOLD){ E*d UJ.>  
stack[++top]=l+1; Y {|is2M9'  
stack[++top]=j; n {..Q,z  
} t/h,-x  
lec3rv0)  
} )&93YrHgC  
file://new InsertSort().sort(data); ;1q|SmF  
insertSort(data); '8;'V%[+  
} pg{cZ1/  
/** KxQMPtHstz  
* @param data % \Mc6  
*/ F[]6U/g n  
private void insertSort(int[] data) { $Ao'mT  
int temp; 1Hs'YzvY  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 4X5KrecNr  
} m[s$)-T  
} VUZeC,FfO  
} 06[HE7  
I !O5+Er  
} OOnhT  
OuyO_DSI  
归并排序: Hd_,`W@  
'ji|'x T  
package org.rut.util.algorithm.support; 3(_:"?xA  
z[0tM&pv  
import org.rut.util.algorithm.SortUtil; {2U3   
{TaYkuWS  
/** ogJ *  
* @author treeroot &!B4v<#,U  
* @since 2006-2-2 ; KT/;I  
* @version 1.0 \6%`)p  
*/ I/go$@E"  
public class MergeSort implements SortUtil.Sort{ ym'!f|9AA  
XC4wm#R  
/* (non-Javadoc) g9j&\+h^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m |Sf'5fK  
*/ z-h?Q4;  
public void sort(int[] data) { /ACau<U]t  
int[] temp=new int[data.length]; ] U,m 1  
mergeSort(data,temp,0,data.length-1); x|)pZa  
} Ugme>60`'k  
C]Q}HI#G  
private void mergeSort(int[] data,int[] temp,int l,int r){ DC0O N`  
int mid=(l+r)/2; SNSHX2  
if(l==r) return ; 9*VL|  
mergeSort(data,temp,l,mid); v1=N?8Hz1  
mergeSort(data,temp,mid+1,r); <7`U1DR=  
for(int i=l;i<=r;i++){ aI 1tG  
temp=data; 0rxGb} b*  
} {+V ]@sz  
int i1=l; d=dHY(ms]  
int i2=mid+1; :"cKxd  
for(int cur=l;cur<=r;cur++){ Y~@(  
if(i1==mid+1) $.4N@=s,?c  
data[cur]=temp[i2++]; S_38U  
else if(i2>r) f6 s .xQ  
data[cur]=temp[i1++]; GU]kgwSf i  
else if(temp[i1] data[cur]=temp[i1++]; _}.WRFIJ@L  
else C9*[/|T  
data[cur]=temp[i2++]; #44}Snz  
} $@84nR{>  
} 4K*st8+bl-  
(S2E'L L{  
} `cPZsL  
Q=Liy@/+!  
改进后的归并排序:  /#zs  
Y$s4 *)%  
package org.rut.util.algorithm.support; uZ'(fnZ$  
&joP-!"  
import org.rut.util.algorithm.SortUtil; ?} lqu7S  
p-H}NQ\  
/** 9+ |W;  
* @author treeroot = BbG2k  
* @since 2006-2-2 `uC^"R(m  
* @version 1.0 ^fmuBe}d{  
*/ N?O^"  
public class ImprovedMergeSort implements SortUtil.Sort { 4vV\vXT*  
wj5,_d)  
private static final int THRESHOLD = 10; M>xT\  
IkO [R1K  
/* rPt   
* (non-Javadoc) F<Xtp8  
* [~c_Aa+6N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $-]I?cWlQ  
*/ N%%trlDXD  
public void sort(int[] data) { E6M*o+Y  
int[] temp=new int[data.length]; q *kLi~ Oe  
mergeSort(data,temp,0,data.length-1); .o]9 HbIk5  
} x+b.9f4xJ  
#qv!1$}2  
private void mergeSort(int[] data, int[] temp, int l, int r) { (LJ7xoJ^  
int i, j, k; ?Ezy0>j  
int mid = (l + r) / 2; 8U}+9  
if (l == r) m#4h5_N  
return; i)$ySlEh  
if ((mid - l) >= THRESHOLD) HE>V\+ AL  
mergeSort(data, temp, l, mid); _9q byhS7  
else #^(Yw|/K  
insertSort(data, l, mid - l + 1); >pe!T aBN  
if ((r - mid) > THRESHOLD) W }v ,6Oe  
mergeSort(data, temp, mid + 1, r); {rn^  
else :#cJZ\YH  
insertSort(data, mid + 1, r - mid); g:@4/+TSt  
:jC$$oC].  
for (i = l; i <= mid; i++) { .zTkOk L  
temp = data; lCTXl5J5  
} sL ;;'S&  
for (j = 1; j <= r - mid; j++) { zKp R:F  
temp[r - j + 1] = data[j + mid]; ?cn`N|   
} bZ^'_OOn  
int a = temp[l]; _>;{+XRX[  
int b = temp[r]; 'K01"`#  
for (i = l, j = r, k = l; k <= r; k++) { <PM.4B@  
if (a < b) { <j/wK]d*/  
data[k] = temp[i++]; e)m6xiZ  
a = temp; p<?lF   
} else { B I=57  
data[k] = temp[j--]; fRq+pUx U  
b = temp[j]; MWK)Bn  
} rhZ p  
} 2 /*z5  
} %LD(S*>7  
9c[bhGD?  
/** Z  
* @param data lCBH3-0^  
* @param l e+:X%a4\  
* @param i |WSpWsr,  
*/ ,X;$-.  
private void insertSort(int[] data, int start, int len) { _18Z]XtX  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); rY8(`a  
} |o*qZ}6  
} lY2~{Y|4s  
} R%q:].  
}  dvz6  
06Q9X!xD  
堆排序: UZmo?&y  
eW8{ ],B  
package org.rut.util.algorithm.support; \(;u[  
` N R,8F  
import org.rut.util.algorithm.SortUtil; BPm" )DMo  
+XW1,ly~  
/** (`4&Y-  
* @author treeroot gm =C0Sp?  
* @since 2006-2-2 yeBfzKI{b  
* @version 1.0 ZS=;)  
*/ 94|ZY}8|f  
public class HeapSort implements SortUtil.Sort{ d$xvM  
Bjj =UtI  
/* (non-Javadoc) vK+!m~kDu  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }2:q#}"  
*/ 7FD,TJs  
public void sort(int[] data) { 0c1=M|2  
MaxHeap h=new MaxHeap(); SuNc&e#(  
h.init(data); :eT\XtxM~{  
for(int i=0;i h.remove(); /q,=!&f2  
System.arraycopy(h.queue,1,data,0,data.length); ;b. m X  
} )s4: &!  
9_.pLLx  
private static class MaxHeap{ Xw jm T  
G2 V$8lh  
void init(int[] data){ EwgNd Gcj  
this.queue=new int[data.length+1]; P}(c0/  
for(int i=0;i queue[++size]=data; Gpcordt/  
fixUp(size); qn{4AWmJ  
} Ciz,1IV  
} VS_\bIC  
]YfG`0eK<  
private int size=0; _qpIdQBo  
3)9e-@  
private int[] queue; vu}U2 0@  
Aq7`A^1t$  
public int get() { mwN "Cu4t  
return queue[1]; L{l}G,j<  
} Ktvs*.?  
,\#j6R,{I  
public void remove() { UV av^<_  
SortUtil.swap(queue,1,size--); Ag*?>I  
fixDown(1); `ZO5-E  
} DMs8B&Y=  
file://fixdown [;4ak)!  
private void fixDown(int k) { c&aqN\'4"  
int j; rc7c$3#X  
while ((j = k << 1) <= size) { mA_EvzXk\  
if (j < size %26amp;%26amp; queue[j] j++; < <Y]P+uU  
if (queue[k]>queue[j]) file://不用交换 1vCp<D9<  
break; fA0wQz]u  
SortUtil.swap(queue,j,k); H 8 6 6,]  
k = j; 3RxR'M1  
} t6kLZ  
} |u$*'EsP  
private void fixUp(int k) { 2 n2,MB  
while (k > 1) { ZCb@!V}=  
int j = k >> 1; r2PN[cLu|  
if (queue[j]>queue[k]) H@ty'z?  
break; RdL5VAD  
SortUtil.swap(queue,j,k); &e#pL`N  
k = j; +ut%C.1  
} g2*}XS 3  
} ,zH\P+*  
]W%rhppC  
} QwF.c28[  
-em3 #V  
} b j<T`M!  
=,i?8Fuz  
SortUtil: PJe \PGh  
iEy2z+/"^  
package org.rut.util.algorithm; #)#'^MZX  
IM[=]j.?  
import org.rut.util.algorithm.support.BubbleSort; D62'bFB^  
import org.rut.util.algorithm.support.HeapSort; a8%T*mk(  
import org.rut.util.algorithm.support.ImprovedMergeSort; K@!hrye  
import org.rut.util.algorithm.support.ImprovedQuickSort; 5GPAt  
import org.rut.util.algorithm.support.InsertSort; |Xd& aQ  
import org.rut.util.algorithm.support.MergeSort; ;eO Ye3;c  
import org.rut.util.algorithm.support.QuickSort; Q&%gpa ).W  
import org.rut.util.algorithm.support.SelectionSort; RC8-6s& ln  
import org.rut.util.algorithm.support.ShellSort; %?qzP '  
*tkf)[(  
/** 99]s/KD2yb  
* @author treeroot  #.Ly  
* @since 2006-2-2 ANj%q9e!Yi  
* @version 1.0 (5[#?_~  
*/  x}d5 Y  
public class SortUtil { 73tjDO7d  
public final static int INSERT = 1; @cm[]]f'l  
public final static int BUBBLE = 2; !VrBoU4<d  
public final static int SELECTION = 3; c\tw#;\9  
public final static int SHELL = 4; ?6I`$ &OA  
public final static int QUICK = 5; rfZg  
public final static int IMPROVED_QUICK = 6; ?9 `T_,  
public final static int MERGE = 7; |Q?$n3-f"  
public final static int IMPROVED_MERGE = 8; mt e3k=17  
public final static int HEAP = 9; 8 -b~p  
cRf;7G  
public static void sort(int[] data) { xcJvXp  
sort(data, IMPROVED_QUICK); WFS6N.Ap  
} 2elj@EB,M  
private static String[] name={ `<Hc,D; p  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" }:0HM8B7!  
}; OU mZ|  
fKuaom9  
private static Sort[] impl=new Sort[]{ (ueH@A"9;  
new InsertSort(), L9whgXD  
new BubbleSort(), DAEWa Kui  
new SelectionSort(), Xa&:Hg<  
new ShellSort(), +ZBj_Vw*|  
new QuickSort(), v57Kr ,  
new ImprovedQuickSort(), l?;ReK.r  
new MergeSort(), :n x;~f  
new ImprovedMergeSort(), *S Z]xrs  
new HeapSort() U?(,Z$:N  
}; y>RqA *J  
r&L1jT.  
public static String toString(int algorithm){ ~i}/  
return name[algorithm-1]; xrJ0  
} ?C6`  
#KtV4)(  
public static void sort(int[] data, int algorithm) { ;{n*F=%uC  
impl[algorithm-1].sort(data); a<V Mh79*  
} '_g*I  
i{J[;rV9  
public static interface Sort { v\kd78,  
public void sort(int[] data); wo^1%:@/2  
} W*4!A\K  
<)@^TRS  
public static void swap(int[] data, int i, int j) { uQWd`7  
int temp = data; O}7aX '  
data = data[j]; <R#:K7> O  
data[j] = temp; &0-Pl.M  
} e9B$"_ &2  
} :!,.c $M  
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