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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。 ^*?mb)  
插入排序: Z$*m=]2  
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package org.rut.util.algorithm.support; B1^9mV'O  
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import org.rut.util.algorithm.SortUtil; d.e_\]o<@  
/** o|7ztpr  
* @author treeroot gh9Gc1tKt  
* @since 2006-2-2 D9yAq'k$  
* @version 1.0 idzc4jR6BT  
*/ <@.!\  
public class InsertSort implements SortUtil.Sort{ E+Eug{+  
+HDfEo T  
/* (non-Javadoc) .@KI,_X6,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kR0/jEz C  
*/ 7&`Yl[G  
public void sort(int[] data) { 62.)fCQ^  
int temp; O'rz  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); [_-[S  
} AOM@~qyc   
} PTH'-G  
} m\f}?t  
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} VXO.S)v2J  
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冒泡排序: si1Szmx,  
FO:k >F  
package org.rut.util.algorithm.support; bScW<DZJ-  
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import org.rut.util.algorithm.SortUtil; glomwny  
Z#zXary5s  
/** i#I7ncX  
* @author treeroot ~j yl  
* @since 2006-2-2 *6wt+twH  
* @version 1.0 M.K%;j`  
*/ r*g<A2g%  
public class BubbleSort implements SortUtil.Sort{ | $D`*  
(/jZ &4T  
/* (non-Javadoc) <"Yx}5n.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }K|40oO5  
*/ +:&|]$8<  
public void sort(int[] data) { 'RpX&g  
int temp; \<%?=C'w~  
for(int i=0;i for(int j=data.length-1;j>i;j--){ y Dw#V`Y^M  
if(data[j] SortUtil.swap(data,j,j-1); Lnc>O'<5P9  
} J0 UF(  
} >{eGSSG0  
} }3=^Ik;x  
} ]5+<Rqdbg  
k3UKGP1  
} 4||dc}I"E  
M,g$  
选择排序: )|B3TjH C  
cIg+^Tl  
package org.rut.util.algorithm.support; ZDr&Alp)o  
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import org.rut.util.algorithm.SortUtil; Y(R .e7]  
7;SI=  
/** /^':5"=o  
* @author treeroot >?(}F':  
* @since 2006-2-2 ]L_h3Xz\X  
* @version 1.0 %<h+_(\h  
*/ ?dY|,_O  
public class SelectionSort implements SortUtil.Sort { li&&[=6A  
;mSJZYnT  
/* h`pXUnEZ  
* (non-Javadoc) }o7"2h ht  
* ,rWej;CzN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Yl"l|2 :  
*/ TSUT3'&~p  
public void sort(int[] data) { Mcqym8,q|3  
int temp; n0opb [?  
for (int i = 0; i < data.length; i++) { !1xX)XD4y  
int lowIndex = i; ,o s M|!,  
for (int j = data.length - 1; j > i; j--) { W6jdS;3  
if (data[j] < data[lowIndex]) { |WsB0R  
lowIndex = j; >.r> aH  
} M`tNYs]V  
} >_SqM!^v  
SortUtil.swap(data,i,lowIndex); x?RYt4S  
} Mc<O ~  
} iDV. C@   
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} UBM :.*wN  
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Shell排序: L(DDyA{bA  
MT{ovDA].  
package org.rut.util.algorithm.support; i]}`e>fF  
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import org.rut.util.algorithm.SortUtil; ;CLOZ{  
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/** Q[MWzsx  
* @author treeroot l 1eF&wNC  
* @since 2006-2-2 @y(<4kLz  
* @version 1.0 Mh8s@g  
*/ "RLv{D<)J,  
public class ShellSort implements SortUtil.Sort{ WFG`-8_e[I  
Qgxpq{y  
/* (non-Javadoc) vY2^*3\<D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ")D5ulb\  
*/ tWaM+W  
public void sort(int[] data) { FS7@6I2Ts  
for(int i=data.length/2;i>2;i/=2){ @k3xk1*  
for(int j=0;j insertSort(data,j,i); Zce/&  
} +AYB0`X)  
} T1i}D"H %  
insertSort(data,0,1); .^V9XN{'a  
} zy'cf5k2  
CJe~>4BT  
/** m*~Iu<5L  
* @param data \`Ow)t:  
* @param j '?uwUBi  
* @param i SYwB #|  
*/ PDkg@#&y,k  
private void insertSort(int[] data, int start, int inc) { ,dXJCX8so  
int temp; s5J?,xu  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 36UUt!}p  
} si#1sdR  
} kV:T2}]|H  
} U o[\1)  
*u]aWx  
} D+"+m%^>C  
|OBh:d_B]  
快速排序: /Jf}~}JP  
J=6( 4>  
package org.rut.util.algorithm.support; qyL!>kZr@  
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import org.rut.util.algorithm.SortUtil; Q/`W[Et  
|vtj0 ,[  
/** `rb}"V+  
* @author treeroot *9tRh Rc  
* @since 2006-2-2 ~_a$5Y  
* @version 1.0 `Ha<t.v(  
*/ ne 8rF.D  
public class QuickSort implements SortUtil.Sort{ "Pa  y2  
).IK[5Q`  
/* (non-Javadoc) dy3fZ(=q^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J~|:Q.Rt`  
*/ -lS(W^r4  
public void sort(int[] data) { P (aN6)D  
quickSort(data,0,data.length-1); Z $Fm73  
} }///k]_Sh  
private void quickSort(int[] data,int i,int j){ S|r,RBeZ  
int pivotIndex=(i+j)/2; RC!9@H5S#  
file://swap 5Kl;(0B9  
SortUtil.swap(data,pivotIndex,j); ''H;/&nDX  
D[dI_|59a  
int k=partition(data,i-1,j,data[j]); ?g4S51zpp  
SortUtil.swap(data,k,j); 4 }NCdGD  
if((k-i)>1) quickSort(data,i,k-1); w^MiyX  
if((j-k)>1) quickSort(data,k+1,j); !md1~g$rN  
sp6A* mwl  
} 5DL(#9F8b9  
/** )yUSuK(Vu  
* @param data v)JS4KS  
* @param i +NTC!/  
* @param j xwojjiV  
* @return Bdm05}c@u  
*/ a xz-H`oq4  
private int partition(int[] data, int l, int r,int pivot) { 7{p6&xXx  
do{ \G2PK&)F  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); y.gjs <y  
SortUtil.swap(data,l,r); !+ (H(,gI  
} S]?I7_  
while(l SortUtil.swap(data,l,r); R|[gEavFl  
return l; {R?VB!dR  
} AbIYdFXB  
465?,EpS  
} j%i6H1#.Z  
pYh\l.@qf  
改进后的快速排序: Bi7&yS5V  
H@'u$qr$:  
package org.rut.util.algorithm.support; >cH}sNHy  
{bNVNG^  
import org.rut.util.algorithm.SortUtil; {J-Ojw|Y b  
>dnDN3x  
/** x#fv<Cj4  
* @author treeroot \f'=  
* @since 2006-2-2 ,6aF~p;wI|  
* @version 1.0 ~0rvrDDg  
*/ cUTG! P\R  
public class ImprovedQuickSort implements SortUtil.Sort { dst!VO: M  
bJ]blnH  
private static int MAX_STACK_SIZE=4096; (};/,t1#$  
private static int THRESHOLD=10; hfpis==  
/* (non-Javadoc) ; jrmr`l=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !:a^f2^=  
*/ xn anca  
public void sort(int[] data) { ])?[9c  
int[] stack=new int[MAX_STACK_SIZE]; xXCsJ9]  
uG(XbDZZ1W  
int top=-1; P?+ VR=t  
int pivot; .:=5|0m  
int pivotIndex,l,r; Wm/0Pi  
w{ P l  
stack[++top]=0; [X ]XH  
stack[++top]=data.length-1; <(l`zLf4p  
g#o9[su  
while(top>0){ IGo+O*dMw  
int j=stack[top--]; 1V-sibE  
int i=stack[top--]; Dlz1"|SF  
czH# ~  
pivotIndex=(i+j)/2; Y)7\h:LIg  
pivot=data[pivotIndex]; ?L6wky{  
oG c9 6B%  
SortUtil.swap(data,pivotIndex,j); p tlag&Z  
pW_mS|  
file://partition G)&!f)6  
l=i-1; b{;LbHq+G  
r=j; L$ZsNs+  
do{ 7{38g  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); p,14'HS%@  
SortUtil.swap(data,l,r); DuIgFp  
} 1^2]~R9,9  
while(l SortUtil.swap(data,l,r); `t+;[G>ZE  
SortUtil.swap(data,l,j); VP*B<u  
>J{e_C2ZS  
if((l-i)>THRESHOLD){ qyjVB/ko  
stack[++top]=i; tv5N wM  
stack[++top]=l-1; ,r;E[k@  
} ]PB95%  
if((j-l)>THRESHOLD){ r|y\FL  
stack[++top]=l+1; q><wzCnRu~  
stack[++top]=j; L;fz7?_j  
} P>Ru  
YD#L@:&gv  
} 6\? 2=dNX  
file://new InsertSort().sort(data); \W|ymV_Ki  
insertSort(data); sn+ kFvk}S  
} o1H6E1$=  
/** IiV]lxiE]  
* @param data Nx!7sE*b$1  
*/ -i]2 b  
private void insertSort(int[] data) { MR zY<MD  
int temp; [K1z/ea)V  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 5kCXy$"%  
} TJ|do`fw>  
} >RrG&Wv59  
} eWXR #g!%>  
O7p=|F"  
} @*WrHoa2N  
L }R-|  
归并排序: #-l+c u{  
tUGF8?& G  
package org.rut.util.algorithm.support; bL|$\'S  
mqDI'~T9 u  
import org.rut.util.algorithm.SortUtil; 0Y8Cz/$  
H-eHX3c7  
/** me90|GOx+  
* @author treeroot H%{k.#O  
* @since 2006-2-2 b]*OGp4]5  
* @version 1.0 gI/(hp3ob  
*/ f67t.6Vw2+  
public class MergeSort implements SortUtil.Sort{ >|mZu)HIY;  
f,Am;:\ |  
/* (non-Javadoc) xdMY2u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <:!:7  
*/ ED>P>Gg  
public void sort(int[] data) { [{zfI`6  
int[] temp=new int[data.length]; h r6?9RJY  
mergeSort(data,temp,0,data.length-1); 3il$V78|  
} V14+?L  
@0%[4  
private void mergeSort(int[] data,int[] temp,int l,int r){ Nl^u A  
int mid=(l+r)/2;  hRqr  
if(l==r) return ; 7@&kPh}PG  
mergeSort(data,temp,l,mid); 7v}(R:*  
mergeSort(data,temp,mid+1,r); cGlpJ)'-{  
for(int i=l;i<=r;i++){ N(P2Lo{JF  
temp=data; HE0m#  
} D$VRE^k  
int i1=l; 5>hXqNjP2  
int i2=mid+1; JD9=gBN\?  
for(int cur=l;cur<=r;cur++){ D58RHgY[  
if(i1==mid+1) CtZOIx.;|  
data[cur]=temp[i2++]; NHe[,nIV  
else if(i2>r) %eGI]!vf  
data[cur]=temp[i1++]; w8zr0z  
else if(temp[i1] data[cur]=temp[i1++]; R: [#OH.c  
else Zh_3ydMD1  
data[cur]=temp[i2++]; y[GqV_~?Y  
} j.c{%UYj  
} QY*F(S,\  
3E}j*lo  
} <@c@`K  
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改进后的归并排序: "*:?m{w5  
 j}w  
package org.rut.util.algorithm.support; 5Ha(i [d  
KL"_h`UW  
import org.rut.util.algorithm.SortUtil; uUe#+[bD  
^2i$AM1t  
/** M|R\[ Zf  
* @author treeroot +wZ|g6vMct  
* @since 2006-2-2 L1&` 3a?pL  
* @version 1.0 V(Cxd.u   
*/ 'r1X6?d J  
public class ImprovedMergeSort implements SortUtil.Sort { gLlA'`!  
s.a@uR^  
private static final int THRESHOLD = 10; ]C{N4Ni^Z  
!E,|EdIr  
/* # wyjb:Ql  
* (non-Javadoc) SZ:R~4 A  
* VBW][f  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L @J$kqWY  
*/ 4L r,}t A  
public void sort(int[] data) { uWi pjxS  
int[] temp=new int[data.length]; }%<cF i &  
mergeSort(data,temp,0,data.length-1); ry+|gCZ  
} c?6(mU\x  
O%<+&Q7  
private void mergeSort(int[] data, int[] temp, int l, int r) { bNHs jx@  
int i, j, k; @6-3D/=  
int mid = (l + r) / 2; M7#CMLy  
if (l == r) G]dHYxG  
return; 21] K7  
if ((mid - l) >= THRESHOLD) C;ME"4,(  
mergeSort(data, temp, l, mid); ?.ofs}  
else n.,ZgLx["  
insertSort(data, l, mid - l + 1); 4$4Tx9C  
if ((r - mid) > THRESHOLD) N9vNSmm  
mergeSort(data, temp, mid + 1, r); B5_QH8kt7  
else g^U-^ f  
insertSort(data, mid + 1, r - mid); }IQ![T5  
k8cR`5 @PK  
for (i = l; i <= mid; i++) { "V,dH%&j  
temp = data; ^5+7D1>W%  
} @f-rS{  
for (j = 1; j <= r - mid; j++) { k"cKxzB  
temp[r - j + 1] = data[j + mid]; xX~m Fz0C  
} NkQain9  
int a = temp[l]; >f;oY9 {m  
int b = temp[r]; $GVf;M2*  
for (i = l, j = r, k = l; k <= r; k++) { Z7Nhb{  
if (a < b) { 1Sv$!xX`n  
data[k] = temp[i++]; @Q:?,  
a = temp; e)i-$0L"  
} else { dhuIVBp!!e  
data[k] = temp[j--]; }@53*h i(  
b = temp[j]; ke'OT>8  
} clr]gib  
} ^(:na6C  
} T n,Ifo3  
l_fERp#y  
/** RC!T1o~L  
* @param data L)Da1<O  
* @param l s ZokiFJ  
* @param i 0JhUncx  
*/ 1z3I^gI*i  
private void insertSort(int[] data, int start, int len) { 5zt5]zl'  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ?!bWUVC)_  
} Z3iX^  
} ,UD5>Ai  
} *Oy%($'  
} JZ-M<rcC  
a0  w  
堆排序: `UkPXCC\1  
>JN[5aus  
package org.rut.util.algorithm.support; jF5oc   
~ o5h}OU"  
import org.rut.util.algorithm.SortUtil;  TJb&f<  
|U="B4  
/** >Wj8[9zf  
* @author treeroot }5"19 Go?  
* @since 2006-2-2 }iR!uhi#  
* @version 1.0 m RtE~~p  
*/ 8V:yOq10  
public class HeapSort implements SortUtil.Sort{ %W$?*Tm  
55`cNZ  
/* (non-Javadoc) pB,@<\l %  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &E!-~'|z  
*/ N_E :?Jo  
public void sort(int[] data) { i)d'l<RA  
MaxHeap h=new MaxHeap(); p2Fi(BW*q  
h.init(data); 1 BVpv7@  
for(int i=0;i h.remove(); T<ekDhlr  
System.arraycopy(h.queue,1,data,0,data.length); rW9ULS2 d  
} ]F,v#6qi  
FDRpK 5cw  
private static class MaxHeap{ $e![^I]`  
<' b%  
void init(int[] data){ )TgjaR9G  
this.queue=new int[data.length+1]; g ??@~\Ov  
for(int i=0;i queue[++size]=data; wB0ONH[  
fixUp(size); Q,xKi|$r  
} tPho4,x$  
} |Ok1E  
}^B=f_Ag  
private int size=0; 8I=migaxP  
.e%B'  
private int[] queue; D|!^8jHj  
_p=O*$b.  
public int get() { $+a2CZs!  
return queue[1]; d[I}+%{[  
} rgg3{bU/  
1PJ8O|Z t8  
public void remove() { b 7bbrR8  
SortUtil.swap(queue,1,size--); 20H$9M=}  
fixDown(1); bi[gyl#  
} &/A?*2  
file://fixdown d.uJ}=|  
private void fixDown(int k) { /8w _jjW  
int j; skP2IMa75  
while ((j = k << 1) <= size) { ?yt"  
if (j < size %26amp;%26amp; queue[j] j++; #~^Y2-C#  
if (queue[k]>queue[j]) file://不用交换 p<3^= 8Y$  
break; u9"1%  
SortUtil.swap(queue,j,k); O)!MWmr  
k = j; &Q"Ox{~W  
} n.$wW =  
} !&D&Gs  
private void fixUp(int k) { 3M{/9rR[  
while (k > 1) { +kKfx!  
int j = k >> 1; xI7; (o"  
if (queue[j]>queue[k]) v='h  
break; !fcr3x|Y~M  
SortUtil.swap(queue,j,k); :jq   
k = j; 2*K _RMr~  
} +;Jb)8  
}  w|>O!]K]  
fK|F`F2V  
} $z~sN  
I2=?H <  
} Q1Sf7)  
JYB<};,  
SortUtil: \$Nx`d aFi  
F? kW{,*  
package org.rut.util.algorithm; `\:9 2+  
 `Up Zk?k  
import org.rut.util.algorithm.support.BubbleSort; n^;:V8k  
import org.rut.util.algorithm.support.HeapSort; (!U5B Hnd  
import org.rut.util.algorithm.support.ImprovedMergeSort; S/|'ggC  
import org.rut.util.algorithm.support.ImprovedQuickSort; =M'y& iz-  
import org.rut.util.algorithm.support.InsertSort; }Z ws e%;  
import org.rut.util.algorithm.support.MergeSort; ruLi "d  
import org.rut.util.algorithm.support.QuickSort; 0FF x  
import org.rut.util.algorithm.support.SelectionSort; fRe$}KX  
import org.rut.util.algorithm.support.ShellSort; I"^ `!8<q  
yD+)!q"  
/** \KmjA )(  
* @author treeroot $g55wGF  
* @since 2006-2-2 A`4j=OF\  
* @version 1.0 aUN!Sd2,  
*/ 2 fX-J  
public class SortUtil { P"%i 4-S  
public final static int INSERT = 1; xoD5z<<  
public final static int BUBBLE = 2; )A a98Eu?2  
public final static int SELECTION = 3; /YWoDHL  
public final static int SHELL = 4; B1oy,'  
public final static int QUICK = 5; xr) Rx{)3h  
public final static int IMPROVED_QUICK = 6; DT_HG|  
public final static int MERGE = 7; 'Lft\.C  
public final static int IMPROVED_MERGE = 8; kEtYuf^  
public final static int HEAP = 9; ?]081l7cd  
!Jw   
public static void sort(int[] data) { AAkdwo  
sort(data, IMPROVED_QUICK); +.Kmpw4  
} _^'fp  
private static String[] name={ Dcq\1V.e`W  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" <D4.kM  
}; nn"!x|c  
MPMJkL$F^  
private static Sort[] impl=new Sort[]{ /_?E0 r  
new InsertSort(), rp.S4;=Q9  
new BubbleSort(), z]> 0A  
new SelectionSort(), y@J]busU  
new ShellSort(), 1sZwW P  
new QuickSort(), K3&v6 #]  
new ImprovedQuickSort(), e =Vu;  
new MergeSort(), dWE[*a\g  
new ImprovedMergeSort(), ho2o/>Ef3  
new HeapSort() HH3WZ^0>  
}; !'Xk=+  
o|Obl@CSBD  
public static String toString(int algorithm){ 0 ]U ;5  
return name[algorithm-1]; AZxx%6  
} |HJdpY>Uu  
|Sy |E  
public static void sort(int[] data, int algorithm) { HFBGM\R02  
impl[algorithm-1].sort(data); gk~.u  
} y@'8vOh`  
Ob?>zsx  
public static interface Sort { a<FzHCw  
public void sort(int[] data); f3s0.G#l  
} x&tad+T  
4aGV1u+4  
public static void swap(int[] data, int i, int j) { *'vX:n&t  
int temp = data; (F]f{8  
data = data[j]; ZebXcT ,41  
data[j] = temp; BD[XP`[{  
} ~d ~$fR  
} XQ--8G  
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