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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。 {` ByZB  
插入排序: }Y!v"DO#Q*  
*_sSM+S  
package org.rut.util.algorithm.support; dlRTxb^Y>u  
n/ZX$?tKAK  
import org.rut.util.algorithm.SortUtil; -A^o5s  
/** jRN>^Ur;g  
* @author treeroot f=IF_|@^S  
* @since 2006-2-2 ):]5WHYg  
* @version 1.0 vyvb-oz;u  
*/ pCC3r t(  
public class InsertSort implements SortUtil.Sort{ adWH';Q:  
A=+1PgL66  
/* (non-Javadoc) iyv5\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6&;h+;h  
*/ D!V~g72j  
public void sort(int[] data) { `4-N@h  
int temp; RpwDOG  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); eX$RD9 H  
} T,9pd;k  
} AD~_n ^  
} ~~3*o  
:(YFIW`59  
} 4YgO1}%G  
~wQ M ?h  
冒泡排序: 'Ll'8 ps  
S.; ahce  
package org.rut.util.algorithm.support; wlFK#iK  
&N*l?7(  
import org.rut.util.algorithm.SortUtil; c"diNbm[  
! NJGW  
/** TDX~?> P  
* @author treeroot +45.fo  
* @since 2006-2-2 '?Xf(6o1  
* @version 1.0 ^fj30gw7\5  
*/ ct@3]  
public class BubbleSort implements SortUtil.Sort{ XzBlT( `w  
#sE: xIR  
/* (non-Javadoc) #y f  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &ZL4/e  
*/ G2&,R{L6w  
public void sort(int[] data) { }yaM.+8.  
int temp; N, ,[V  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 30YH}b#B  
if(data[j] SortUtil.swap(data,j,j-1); Ln8r~[tVE<  
} ]sI\.a  
} \c1>15  
} xYY^tZIV  
} '=(D7F;  
8Oa+,?<0x  
} @<yYMo7  
.I]EP-  
选择排序: %<|cWYM="z  
s_3a#I  
package org.rut.util.algorithm.support; !p Q*m`Xo  
9&zQ 5L>  
import org.rut.util.algorithm.SortUtil; sJMpF8   
Wf~PP;  
/** VAp 1{  
* @author treeroot j_.tg7X  
* @since 2006-2-2 aTkMg  
* @version 1.0 CIVV"p`}  
*/ oA8A @,-L  
public class SelectionSort implements SortUtil.Sort { h!`KX2~  
P?@o?  
/* p) ?6~\F:  
* (non-Javadoc) Js(MzL  
* )"]( ?V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a1EQ.u  
*/ w~3z) ;  
public void sort(int[] data) { iO"ZtkeNr  
int temp; @O|`r(le  
for (int i = 0; i < data.length; i++) { [ OS& eK 8  
int lowIndex = i; T%A"E,#  
for (int j = data.length - 1; j > i; j--) { ==S^IBG  
if (data[j] < data[lowIndex]) { 8gG;A8  
lowIndex = j; 0./Rdf=-1j  
} iI;np+uYk  
} hW`o-'  
SortUtil.swap(data,i,lowIndex); ,hZ?]P&  
} y(O~=S+<  
} wScr:o+K>L  
wEw;],ur  
} yH9&HFDp  
e-nwR  
Shell排序: $RYOj{1  
@k\,XV`T~t  
package org.rut.util.algorithm.support; wRZS+^hx  
'wWuR@e#&  
import org.rut.util.algorithm.SortUtil; hxt;sQAo{  
q3`~uTzk  
/** 8T8]gM  
* @author treeroot PAH#yM2Ic  
* @since 2006-2-2  yyGn <  
* @version 1.0 Gz4LjMQ &  
*/ &_-3>8gU  
public class ShellSort implements SortUtil.Sort{ Sbeq%Iwm.  
CdMV(  
/* (non-Javadoc) x`I"%pG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FD[4?\W]#  
*/ 8U n0<+b  
public void sort(int[] data) { _UY=y^ c0>  
for(int i=data.length/2;i>2;i/=2){ 4O:HT m  
for(int j=0;j insertSort(data,j,i); ,t!I%r  
} 1kD1$5  
} pktnX-Slt  
insertSort(data,0,1); \Y`psSf+  
} Ua4P@#cU  
6R*eJICN  
/** $LG.rJ/*  
* @param data ENI|e,'[  
* @param j .HRd6O;  
* @param i -J0OtrZ  
*/ B5+$ VQ  
private void insertSort(int[] data, int start, int inc) { Io t c>!  
int temp; D&pp <  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); sXtt$HID=  
} kh8 M=  
} ff=RKKnN  
} k5 *Z@a  
x3F94+<n{  
} 7%G&=8tq  
u$X =2u:P  
快速排序: I}m>t}QRI_  
u68ic1  
package org.rut.util.algorithm.support; c~}FYO$  
k=G c#SD5_  
import org.rut.util.algorithm.SortUtil; nU0##  
f0YBy<a  
/** 7K+eI!m.s  
* @author treeroot m>?|*a,  
* @since 2006-2-2 Kjpsz];  
* @version 1.0 l TVz'ys  
*/ g4{0  
public class QuickSort implements SortUtil.Sort{ F~~9/#  
T!Lv%i*|Y  
/* (non-Javadoc) %Aa_Bumf*:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4q(,uk&R[  
*/ @Y<fj^]k  
public void sort(int[] data) { .-[]po  
quickSort(data,0,data.length-1); 1#8~@CQ ::  
} ,b?G]WQrHs  
private void quickSort(int[] data,int i,int j){ 0DN&HMI#  
int pivotIndex=(i+j)/2; AS0mM HJk  
file://swap q^7=/d8  
SortUtil.swap(data,pivotIndex,j); 9$}> O]  
:XTxrYt28  
int k=partition(data,i-1,j,data[j]); ;F"Tu  
SortUtil.swap(data,k,j); Ga V OMT  
if((k-i)>1) quickSort(data,i,k-1); ~}SQLYy7Z  
if((j-k)>1) quickSort(data,k+1,j); >GzH_]  
T'9M  
} qD /h/  
/** r"p"UW9og  
* @param data _X@ Q`d  
* @param i 88 ca  
* @param j BqdGU-Q  
* @return y)TBg8Q  
*/ Bo1 t}#7  
private int partition(int[] data, int l, int r,int pivot) { }WF6w+  
do{ bjN"H`Q  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); vV*/"'>  
SortUtil.swap(data,l,r); B B^81{A  
} SRU#Y8Xv|  
while(l SortUtil.swap(data,l,r); 7|Iq4@IT  
return l; E.-2 /'i  
} ]BTISaL-R  
u'gsIuRJ  
} Q5IN1 ^=HF  
QUF1_Sa  
改进后的快速排序: &4)PW\ioY  
0UGAc]!/RZ  
package org.rut.util.algorithm.support; dEor+5}  
zm4e+v-  
import org.rut.util.algorithm.SortUtil; 5bsv05=e  
i98PlAq)B  
/** +eop4 |Z  
* @author treeroot y+ izC+  
* @since 2006-2-2 A2Iqn5  
* @version 1.0 T(k:\z/  
*/ L Z3=K`gj  
public class ImprovedQuickSort implements SortUtil.Sort { q^~w:$^ U  
o[S Mt  
private static int MAX_STACK_SIZE=4096; z5sKV7&\[n  
private static int THRESHOLD=10; -qLNs_ _k  
/* (non-Javadoc) Jq+@%#G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @[n%q.|VB  
*/ =,08D^xY  
public void sort(int[] data) { Tc|+:Usy  
int[] stack=new int[MAX_STACK_SIZE]; ~dLe9-_9  
?3i<^@?  
int top=-1; 5"+;}E|q  
int pivot; W;U<,g '  
int pivotIndex,l,r; N'|9rB2e  
ZJ[p7XP  
stack[++top]=0; 0 4oMgH>Vd  
stack[++top]=data.length-1; 5p/.( |b,  
L rV|Y~  
while(top>0){ "\M3||.!  
int j=stack[top--]; .tK]-f2  
int i=stack[top--]; SK_N|X].  
q\~D:z$+CO  
pivotIndex=(i+j)/2; 'o7V6KG  
pivot=data[pivotIndex]; n.o_._mu2  
9$%S<v  
SortUtil.swap(data,pivotIndex,j); cO-^#di  
0_t9;;y :  
file://partition aDE}'d1qo  
l=i-1; *P`k|-  
r=j; SW HiiF@  
do{ *O-m:M!eA  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); yzXS{#\  
SortUtil.swap(data,l,r); ff aMF~+  
} j'UW gwB  
while(l SortUtil.swap(data,l,r); 7qdB   
SortUtil.swap(data,l,j); }c#W"y5l_  
"2T* w~V&y  
if((l-i)>THRESHOLD){ pz.fZV  
stack[++top]=i; _G%kEt_4  
stack[++top]=l-1; jLEO-<)-)  
} c2d1'l]n  
if((j-l)>THRESHOLD){ vQ{mEaH  
stack[++top]=l+1; )xTu|V   
stack[++top]=j; R5<:3tk=X  
} |lVi* 4za%  
vnX~OVz2  
} gNh4c{Al9  
file://new InsertSort().sort(data); yQC8Gt8  
insertSort(data); $- GwNG  
} mf2Qu  
/** ]YB,K)WQ  
* @param data ~sCdvBA  
*/ :} o{<U  
private void insertSort(int[] data) { zZ8:>2Ps(  
int temp; X u>]$+u#  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 2JHV*/Q  
} !'=< uU-  
} D5!I{hp"  
} |(9l_e|  
Q*/jQC  
} 5"Y:^_8  
`QT9W-0e^  
归并排序: o7yvXrpG(U  
"}< baz  
package org.rut.util.algorithm.support; P_M!h~  
.?r} 3Ch  
import org.rut.util.algorithm.SortUtil; N$cAX^~  
D]K?ntS[*  
/** vGp`P  
* @author treeroot PxJvE*6^H  
* @since 2006-2-2 1c$c e+n~  
* @version 1.0 >W'"xK|:  
*/ 7#9fcfL  
public class MergeSort implements SortUtil.Sort{ fc%C!^7  
d ewN\  
/* (non-Javadoc) -nB. .q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gq+#=!(2  
*/ <{.pYrn  
public void sort(int[] data) { H`T}k+e2-N  
int[] temp=new int[data.length]; JiiYl&#  
mergeSort(data,temp,0,data.length-1); /tqe:*  
} $XrX(l5  
Y,X0x-  
private void mergeSort(int[] data,int[] temp,int l,int r){  e:6mz\J  
int mid=(l+r)/2; lq)[  
if(l==r) return ; Kp/l2?J"  
mergeSort(data,temp,l,mid); {JW_ZJx  
mergeSort(data,temp,mid+1,r); ,^qHl+'  
for(int i=l;i<=r;i++){ N\ zUQ J  
temp=data; sQT<I]e  
} t},71Ry  
int i1=l; <J^94-[CF  
int i2=mid+1; DXfQy6k'  
for(int cur=l;cur<=r;cur++){ wPpern05  
if(i1==mid+1) N!13QI H  
data[cur]=temp[i2++]; `W4Is~VVv  
else if(i2>r) 6yMaW eT  
data[cur]=temp[i1++]; K)9f\1\  
else if(temp[i1] data[cur]=temp[i1++]; V_T~5%9Fy  
else qWI8 >my11  
data[cur]=temp[i2++]; *BQy$dfE  
} Aj@t*3  
} Qf|c^B  
IHe?/oUL"b  
} *GM.2``e  
;vgaFc]  
改进后的归并排序: \B8[UZA.&  
2!}rH w  
package org.rut.util.algorithm.support; nsi&r  
f_ > lz  
import org.rut.util.algorithm.SortUtil; eo4v[V&  
p 4lB#  
/** `AhTER  
* @author treeroot 4J2C# Cs  
* @since 2006-2-2 O4,? C)  
* @version 1.0 uq@_DPA7  
*/ HQrx9CXE  
public class ImprovedMergeSort implements SortUtil.Sort { 7]8apei|  
Qx77%L4  
private static final int THRESHOLD = 10; vi0nJ -Xg  
qLm g18  
/* wmFS+F4`2  
* (non-Javadoc) FJ O- p  
* @5TJ]=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2Xp?O+b#"O  
*/ A)D1 #,0  
public void sort(int[] data) { ;d||u  
int[] temp=new int[data.length]; -@`!p  
mergeSort(data,temp,0,data.length-1); f_tC:T4a  
} ~a.ei^r  
O@,9a~Ghd  
private void mergeSort(int[] data, int[] temp, int l, int r) { :-1 i1d  
int i, j, k; mbO.Kyfen  
int mid = (l + r) / 2; CrEC@5 j  
if (l == r) K=;oZYNd  
return; 9AZpvQ  
if ((mid - l) >= THRESHOLD) oF(|NS^  
mergeSort(data, temp, l, mid); UN`O*(k[  
else rs:a^W5t  
insertSort(data, l, mid - l + 1); SR { KL#NC  
if ((r - mid) > THRESHOLD) LW+^m6O  
mergeSort(data, temp, mid + 1, r); hN.{H:skL)  
else lNqF@eCT9  
insertSort(data, mid + 1, r - mid); CWM_J9f  
7bx!A+, t  
for (i = l; i <= mid; i++) { %x|0<@b7-  
temp = data; UoKXo*W2  
} Wj31mV  
for (j = 1; j <= r - mid; j++) { Z66q0wR7  
temp[r - j + 1] = data[j + mid]; nSh}1Arp/  
} +:m'  
int a = temp[l]; ?h'd\.j{  
int b = temp[r]; FFID<L f/2  
for (i = l, j = r, k = l; k <= r; k++) { ?-9It|R  
if (a < b) { 0o-KjX?kP  
data[k] = temp[i++]; qX!P:M  
a = temp; .06[*S  
} else { |1^ !rHg  
data[k] = temp[j--]; kY`L[1G$  
b = temp[j]; ]"4\]_?r  
} _tpqo>  
} m}?(c)ST  
} +`Ypc  
"A,-/~cBV  
/** F<A[S "  
* @param data c~iAjq+c  
* @param l +umVl  
* @param i by0M(h  
*/ [f\TnXq24  
private void insertSort(int[] data, int start, int len) { =9#cf-?  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); R(N5K4J  
} X2hyxTOp  
} uvj`r5ei  
} \Dr?}D  
} ".T&nS[z  
YCEdt>5PA  
堆排序: <GRrw  
MLn\ b0  
package org.rut.util.algorithm.support; Y+UM>  
SFx|9$hXm  
import org.rut.util.algorithm.SortUtil; UBve a(z-#  
C.oC@P  
/** u.L{3gkT  
* @author treeroot zQ~8(E]Rf  
* @since 2006-2-2 uP veAK}h  
* @version 1.0 q3-V_~5^/z  
*/ H8'_.2vwX  
public class HeapSort implements SortUtil.Sort{ QAmb_:^"d  
)Y@mL/_  
/* (non-Javadoc) l|p \8=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?:XbZ"25pJ  
*/ ZF6?N?t}h8  
public void sort(int[] data) { HCTjFW>C  
MaxHeap h=new MaxHeap(); o&b1-=MC2  
h.init(data); cq \()uF'c  
for(int i=0;i h.remove(); p8a \> {  
System.arraycopy(h.queue,1,data,0,data.length); @ 80Z@Pj  
} P n|*(sTl  
i?1g{JW  
private static class MaxHeap{ }qOj^pkJ  
rkz_h  
void init(int[] data){ V[T`I a\  
this.queue=new int[data.length+1]; Auz.wes  
for(int i=0;i queue[++size]=data; p?,:  
fixUp(size); r^|AiYI)  
} ?go+oS^  
} yDW$v/j.|  
^+20e3 ~Y  
private int size=0; {(MC]]'?  
_.y0 QkwV  
private int[] queue;  ^q=D!g  
_@Le MNv  
public int get() { llP 5  
return queue[1]; JD}"_,-  
} l.Qv9Ll|b  
%d/Pc4gfc  
public void remove() { w0i v\yIRQ  
SortUtil.swap(queue,1,size--); HKZD*E((  
fixDown(1); 7$&3(#!N  
} }^ np  
file://fixdown UBy< vwnU  
private void fixDown(int k) { PtT=HvP!k  
int j; g1s\6%g  
while ((j = k << 1) <= size) { N-4k 9l1  
if (j < size %26amp;%26amp; queue[j] j++; * vMNv  
if (queue[k]>queue[j]) file://不用交换 6(uK5eD(!n  
break; UfUboxT  
SortUtil.swap(queue,j,k); $<(FZb=  
k = j; Zw`vPvb!  
} ;>d uY\$<  
} !$i*u-%4  
private void fixUp(int k) { &58+-jzW  
while (k > 1) { z]Dbca1a`  
int j = k >> 1; tuF hPqe {  
if (queue[j]>queue[k]) %@jL? u  
break; *>a+`|[1*  
SortUtil.swap(queue,j,k); <cn{S`  
k = j; b=Y:`&o=[  
} ~ :\QC  
} #gL$~.1  
|/R)FT#i  
} W%xg;uzp  
MWxv\o   
} Mr3;B+S  
,#FK3;U  
SortUtil: }bxW@(bs  
8 ;C_@  
package org.rut.util.algorithm; x!08FL)  
lnk`D(>W  
import org.rut.util.algorithm.support.BubbleSort; Gz9w1[t  
import org.rut.util.algorithm.support.HeapSort; [o0Z; }fU  
import org.rut.util.algorithm.support.ImprovedMergeSort; CAhkv0?8  
import org.rut.util.algorithm.support.ImprovedQuickSort; Gw5j6  
import org.rut.util.algorithm.support.InsertSort; _*SA_.0  
import org.rut.util.algorithm.support.MergeSort; Gw/imXL  
import org.rut.util.algorithm.support.QuickSort; !6UtwCVR  
import org.rut.util.algorithm.support.SelectionSort; o`8dqP  
import org.rut.util.algorithm.support.ShellSort; K2u$1OKv  
e /4{pe+,  
/** !u0qF!/W  
* @author treeroot lo%:$2*'p  
* @since 2006-2-2 nK" XyZ&  
* @version 1.0 u&!QP4$"z  
*/ 2$MIA?A"Y  
public class SortUtil { vIi#M0@N  
public final static int INSERT = 1; 5ZRO{rf  
public final static int BUBBLE = 2; MifPZQ  
public final static int SELECTION = 3; \[Dxg`;4  
public final static int SHELL = 4; IU8/B+hM~  
public final static int QUICK = 5; $H9+>Z0(  
public final static int IMPROVED_QUICK = 6; b`=\<u8  
public final static int MERGE = 7; %ifq4'?Z   
public final static int IMPROVED_MERGE = 8; vy t$  
public final static int HEAP = 9; *P#okwp  
wap@q6fz<  
public static void sort(int[] data) { f<`is+"  
sort(data, IMPROVED_QUICK); $ {iV]Xt  
}  4|9c+^%^  
private static String[] name={ .%D9leiRe  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" /~49.}yt  
}; q^e4  
9D2}heTN  
private static Sort[] impl=new Sort[]{ Tq r]5  
new InsertSort(), gRk%ObJGqm  
new BubbleSort(), |-W7n'n  
new SelectionSort(), OKo39 A\fu  
new ShellSort(), xMAfa>]{n  
new QuickSort(), Iq@:n_~  
new ImprovedQuickSort(), >>**n9\q  
new MergeSort(), f#s /Ycp+  
new ImprovedMergeSort(), fI5]ed eS  
new HeapSort() ]ZQ3|ZJ?<  
}; |]d A`e&y  
x2|YrkGv  
public static String toString(int algorithm){ :3z`+5Y*  
return name[algorithm-1]; ~JJuM  
} GvL)SVv?  
E,F'k2yU  
public static void sort(int[] data, int algorithm) { 1 h.=c  
impl[algorithm-1].sort(data); )}-,4Iu%  
} &B</^:  
Hqel1J  
public static interface Sort { ;^q@w  
public void sort(int[] data); *nv%~t   
} L"w% ew  
: "|M  
public static void swap(int[] data, int i, int j) { V'XmMn)!  
int temp = data; I.f)rMl+h  
data = data[j]; +J^-B}v  
data[j] = temp; z$VA]tI(  
} yEnurq%J  
} 5Iv3B|u  
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