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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。 F$d`Umqs;P  
插入排序: Z x3m$.8  
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package org.rut.util.algorithm.support; 9kTU|py  
SFTThM]8M1  
import org.rut.util.algorithm.SortUtil; HuG|BjP  
/** H$Q_K<V  
* @author treeroot KN5.2pp  
* @since 2006-2-2 {eS!cZJ  
* @version 1.0 oveW)~4  
*/ nNf/$h#;O  
public class InsertSort implements SortUtil.Sort{ o: qB#8X  
68d(6?OgW  
/* (non-Javadoc) \!`*F :7]-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |NL$? %I  
*/ XBCz\f  
public void sort(int[] data) { eQA89 :j,  
int temp; xCGvLvFn  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); zcDVvP  
} st~f}w@  
} p,U.5bX  
} H;|^z@RB<  
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} O]`CSTv'_  
fZ$8PMZv  
冒泡排序: F8.Fp[_tM  
Sa6}xe."M,  
package org.rut.util.algorithm.support; jrG@ +" }  
2UA h^i-^  
import org.rut.util.algorithm.SortUtil; flnoK%wi  
n hS=t8H  
/** |K7JU^"OQ  
* @author treeroot <Xv]Ih?@f`  
* @since 2006-2-2 C}%g(YRhb  
* @version 1.0  ^~?VD  
*/ Jv a&"}Cb  
public class BubbleSort implements SortUtil.Sort{ [Cvo^cC  
hK3?m.> "g  
/* (non-Javadoc) .(`#q@73  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [T.kwQf4$  
*/ *o`bBdZ  
public void sort(int[] data) { Jk 0 ;<2j  
int temp; u<:R Sg  
for(int i=0;i for(int j=data.length-1;j>i;j--){ "4zTP!Ow  
if(data[j] SortUtil.swap(data,j,j-1); }"E?#&^  
} _=}Efy7  
} t /1KKEZM  
} ',v -&1R  
} V\Cu|m&HI  
[PdatL2  
} )lE]DG!  
,a_\o&V  
选择排序: z1*8 5?  
L6O* aZ|  
package org.rut.util.algorithm.support; 5f jmr  
Yc&yv  
import org.rut.util.algorithm.SortUtil; 9ssTG4Sa  
Quqts(Q)+  
/** C5$1K'X@  
* @author treeroot \GEFhM4)  
* @since 2006-2-2 "o+< \B~  
* @version 1.0 I5 "Z  
*/ ?l &S:` L  
public class SelectionSort implements SortUtil.Sort { p$0G EYwM  
IR(qjm\V  
/* Lp.,:z7  
* (non-Javadoc)  km|;T!  
* ] K3^0S/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /q0[T{Wz$  
*/ M|w;7P}  
public void sort(int[] data) { P|Dw +lQj  
int temp; (3C::B=  
for (int i = 0; i < data.length; i++) { S=*rWh8)%<  
int lowIndex = i; 7LbBS:@3z_  
for (int j = data.length - 1; j > i; j--) { <-D>^p9  
if (data[j] < data[lowIndex]) { OTY9Q  
lowIndex = j; z1{kZk  
} xrs?"]M[  
} YKlYo~fGN9  
SortUtil.swap(data,i,lowIndex); ]6bh#N;.  
} +mIO*UQi  
} . K s%ar  
L'iENZ I$  
} Gb4k5jl  
@G@,)`p4?  
Shell排序: kj{z;5-dl  
mmE\=i~  
package org.rut.util.algorithm.support; omevF>b;  
-~n^?0  
import org.rut.util.algorithm.SortUtil; &`Oj<UyJY  
|3<tDq@+  
/** gdPv,p19L  
* @author treeroot aAhXHsZ|26  
* @since 2006-2-2 t6(LO9Qc  
* @version 1.0 .jA'BF.  
*/ WhQK3hnm  
public class ShellSort implements SortUtil.Sort{  >\6Tm  
P/6$ T2k_  
/* (non-Javadoc) SVB> 1s9F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I]+xerVd  
*/ Wn6~x2LaV  
public void sort(int[] data) { '#LbIv4  
for(int i=data.length/2;i>2;i/=2){ R/Y9t8kk  
for(int j=0;j insertSort(data,j,i); 094~  s  
} WT;4J<O/  
} .0+=#G>  
insertSort(data,0,1); W5z<+8R  
} / Vy pN,  
awxzP*6  
/** O< [h  
* @param data }tJR Bb  
* @param j n,/eT,48`  
* @param i }-jS0{i  
*/ Xo[j*<=0  
private void insertSort(int[] data, int start, int inc) { DLggR3K_\  
int temp; . 7*k}@k  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); .,[ NJ:l  
} +}1h  
} @`t#Bi9  
} &.^(, pt  
7~&  
} r*_z<^d  
goBl~fqy0  
快速排序: IC"lsNq52  
{x_SnZz&  
package org.rut.util.algorithm.support; #@%DY*w]v  
mW EaUi)Zz  
import org.rut.util.algorithm.SortUtil; a4{~.Mp  
+5~5BZP  
/** J,q6  
* @author treeroot 9bu}@#4*  
* @since 2006-2-2 K ?uH Am  
* @version 1.0 jEU`ko_  
*/ q9+`pj  
public class QuickSort implements SortUtil.Sort{ X% JQ_Z  
zNG]v?JAh  
/* (non-Javadoc) }\ kLh(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )bqSM&SO  
*/ LL% Aw)Q`  
public void sort(int[] data) { 1'Sr0 oEd3  
quickSort(data,0,data.length-1); 5\!t!FL_  
} n1!hfu7@s  
private void quickSort(int[] data,int i,int j){ n92*:Y  
int pivotIndex=(i+j)/2; v\lhbpk  
file://swap .h c-uaL  
SortUtil.swap(data,pivotIndex,j); V Ioqn$  
m{#?fR=9  
int k=partition(data,i-1,j,data[j]); ;|yd}q=p  
SortUtil.swap(data,k,j); J n>3c  
if((k-i)>1) quickSort(data,i,k-1); P'}WmE'B}F  
if((j-k)>1) quickSort(data,k+1,j); >%6a$r~@  
]cQYSN7!SY  
} fGdT2}gd  
/** mv1g2f+  
* @param data ;[nomxu|?  
* @param i  vNWCv  
* @param j M$J{clr  
* @return +>bm~6  
*/ KYw~(+gHv2  
private int partition(int[] data, int l, int r,int pivot) { 0c}pg:XT  
do{ t.\<Q#bN#  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Cj/J&PDQ  
SortUtil.swap(data,l,r); v;6O# ta'  
} 9f=L'{  
while(l SortUtil.swap(data,l,r); x)}.@\&%  
return l; &JUHm_wd&S  
} ce56$L8[  
7l%]O}!d)  
} 1 sJtkge:  
wmV7g7t6  
改进后的快速排序: meF.`fh  
,]Gi942  
package org.rut.util.algorithm.support; yV.E+~y  
Th.Mn}1%L  
import org.rut.util.algorithm.SortUtil; wqnrN6$jf  
 eeMeV>  
/** sh#hDU/</  
* @author treeroot \:mZ)f3K=  
* @since 2006-2-2 wn1` 9  
* @version 1.0 qX9x#92  
*/ ~SzHIVj:6  
public class ImprovedQuickSort implements SortUtil.Sort { Nh^ lC  
iVaCXXf'  
private static int MAX_STACK_SIZE=4096; 7=hISQMsVP  
private static int THRESHOLD=10; gI T3A*x  
/* (non-Javadoc) 0%(.$c>:f  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |7# S0Ca@  
*/  Uf,fd  
public void sort(int[] data) { l@W1b S  
int[] stack=new int[MAX_STACK_SIZE]; rbt/b0ET  
DYf3>xh>xb  
int top=-1; 6lAHB*`  
int pivot; 'G)UIjl  
int pivotIndex,l,r; uD=FTx  
l/i7<q  
stack[++top]=0; D[H #W[  
stack[++top]=data.length-1; eo [eN.  
~fF_]UVq3  
while(top>0){ -prc+G,qyp  
int j=stack[top--]; j+eto'  
int i=stack[top--]; GbB :K2  
;z1\n3,  
pivotIndex=(i+j)/2; kVRh/<s  
pivot=data[pivotIndex]; TC* 78;r  
mVsghDESJ)  
SortUtil.swap(data,pivotIndex,j); ).$q9G  
,&F4|{  
file://partition EP'I  
l=i-1; < $>Jsv  
r=j; zz m[sX}  
do{ x{_3/4  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); <| =^['vi  
SortUtil.swap(data,l,r); Y=5}u&\   
} vT=?UTq  
while(l SortUtil.swap(data,l,r); k.n-JS  
SortUtil.swap(data,l,j); h_y;NB(w  
$ S'~UbmYU  
if((l-i)>THRESHOLD){ =O o4O CF2  
stack[++top]=i; 7[I%UP  
stack[++top]=l-1; P1_ZGeom*  
} S x0QPX  
if((j-l)>THRESHOLD){ 5H^"  
stack[++top]=l+1; *Dhy a g  
stack[++top]=j; al1Nmc #  
} (#K u`  
$8{v_2C){  
} ^q}cy1"j"  
file://new InsertSort().sort(data); zgn~UC6&  
insertSort(data); Oz1S*<]=,~  
} @%b&(x^UD  
/** TbQ5  
* @param data N <e72x  
*/ kSUpEV+/  
private void insertSort(int[] data) { !(i}FFn{:  
int temp; G ~X93J  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _I/uW|>  
} 0-at#r:  
} 2tqj]i  
} ;^DG P  
a,ZmDkzuv  
} ;) XB'  
Hs`j6yuc9  
归并排序: mx=2lL`  
xgq `l#  
package org.rut.util.algorithm.support; Wz+7CRpeP  
x='T`*HD  
import org.rut.util.algorithm.SortUtil; vrX@T ?>  
+i@{h9"6g  
/** I-L:;~.  
* @author treeroot u` L9Pj&v  
* @since 2006-2-2 Iw[7;B5v  
* @version 1.0 6F:< c  
*/ x^V9;V@6  
public class MergeSort implements SortUtil.Sort{ lN~V1(1B  
$'%.w|MJp  
/* (non-Javadoc) htu(R$GSM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $d\>^Q  
*/ J e"~/+  
public void sort(int[] data) { 4N[KmNi<  
int[] temp=new int[data.length]; c`O(||UZT  
mergeSort(data,temp,0,data.length-1); (T|q]29  
} Ba#wW E  
chakp!S=  
private void mergeSort(int[] data,int[] temp,int l,int r){ k];NTALOG  
int mid=(l+r)/2; )cV*cDL1j  
if(l==r) return ; Q4h6K 7  
mergeSort(data,temp,l,mid); @<ILF69b  
mergeSort(data,temp,mid+1,r); k0@*Up3{7  
for(int i=l;i<=r;i++){ BN%;AQV  
temp=data; T=,A pa  
} YmPNaL  
int i1=l; M]7>Ar'zsG  
int i2=mid+1; %U?1Gf e  
for(int cur=l;cur<=r;cur++){ 3R& FzLs  
if(i1==mid+1) 05 o vz   
data[cur]=temp[i2++]; /8Ru O  
else if(i2>r) g>pvcf(  
data[cur]=temp[i1++]; @Yj+u2!  
else if(temp[i1] data[cur]=temp[i1++]; E+z"m|G  
else <44A*ux  
data[cur]=temp[i2++]; kHbH{])  
} 9/#?]LJ  
} Xy]Pmt  
z(eAhK}6?  
} T)o>U &KNP  
]114\JE  
改进后的归并排序: ~A@HW!*Z@  
lPZYd 8  
package org.rut.util.algorithm.support; m <'&`B;  
<`?V:};Q  
import org.rut.util.algorithm.SortUtil; qAW?\*n5N  
Pr'Ij  
/** EECuJ+T  
* @author treeroot p;Nq(=] \  
* @since 2006-2-2 `e4gneQY  
* @version 1.0 9A,ok[J  
*/ F[)5A5+:Y  
public class ImprovedMergeSort implements SortUtil.Sort { 2Y~nU(  
EE5mVC&  
private static final int THRESHOLD = 10; :r4o:@N'  
-]Y@_T.C  
/* v2jpao<K  
* (non-Javadoc) 2(AuhZ>  
* XiO~^=J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *2>kic aH  
*/ W 9!K~g_  
public void sort(int[] data) { } /*U~!t  
int[] temp=new int[data.length]; VRB!u420  
mergeSort(data,temp,0,data.length-1); K_ Odu^  
} g[Q+DT  
.]YTS  
private void mergeSort(int[] data, int[] temp, int l, int r) { 7q(A&  
int i, j, k; I=2b)"t0  
int mid = (l + r) / 2; $pJw p{kN  
if (l == r) #HTq \J!  
return; YY4q99^K  
if ((mid - l) >= THRESHOLD) -dS@ l'$  
mergeSort(data, temp, l, mid); }D[j6+E  
else nArG I}@  
insertSort(data, l, mid - l + 1); s("\]K  
if ((r - mid) > THRESHOLD) ipC <p?PpR  
mergeSort(data, temp, mid + 1, r); vYg>^!Q  
else n7/>+V+  
insertSort(data, mid + 1, r - mid); Hu$y8_Udw  
<DZ$"t  
for (i = l; i <= mid; i++) { kRqe&N e  
temp = data; Ay0.D FL  
} M(?0c}z  
for (j = 1; j <= r - mid; j++) { 4'5|YGQj  
temp[r - j + 1] = data[j + mid]; [H@71+_Q  
} |B {*so]  
int a = temp[l]; *RM 3 _  
int b = temp[r]; L6./5`bs  
for (i = l, j = r, k = l; k <= r; k++) { xF6byTi  
if (a < b) { =2@ V}  
data[k] = temp[i++]; tU0jFBB  
a = temp; .Ta(v3om%  
} else { )&j@={0  
data[k] = temp[j--]; #%g>^i={ky  
b = temp[j]; G%ZP `  
} UM<!bNz`  
} 8j)*T9  
} _< KUa\  
=&F~GC Z>  
/** -B& Nou  
* @param data K\FLA_J  
* @param l 3 sD|R{  
* @param i  ]0XlI;ah  
*/ VWc)AfKe  
private void insertSort(int[] data, int start, int len) { Bo$dIn2_  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); rK\9#[?x  
} :(iBLO<x  
} C55Av%-=  
} xp}M5|   
} 20# V?hX3  
l5#SOo\  
堆排序: =!\Y;rk  
p\R&vof*  
package org.rut.util.algorithm.support; !Df>Q5~g  
.C` YO2,  
import org.rut.util.algorithm.SortUtil; zpjE_|  
]$=#:uf  
/** x4K A8  
* @author treeroot @N ]]Cf>x  
* @since 2006-2-2 Lg~ll$ U  
* @version 1.0 G6dUm_iB  
*/ ]h,iyWSs  
public class HeapSort implements SortUtil.Sort{ ~+C)0Yn  
< 0YoZSNGj  
/* (non-Javadoc) m(D+!I9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pzZ+!d  
*/ pp{ 2[>  
public void sort(int[] data) { 7"F29\  
MaxHeap h=new MaxHeap(); p|?FA@ 3  
h.init(data); mV^~  
for(int i=0;i h.remove(); N=\weuED  
System.arraycopy(h.queue,1,data,0,data.length); c]n"1YNm  
} 74  &q2g{  
FA+"t^q  
private static class MaxHeap{ 5+Ao.3Xn  
}[R-)M  
void init(int[] data){ |Sm/s;&c6  
this.queue=new int[data.length+1]; o{hX?,4i  
for(int i=0;i queue[++size]=data; - AU{Y`j  
fixUp(size); U(LLIyZv  
} }m'n1tm;  
} PQp =bX,  
: _tt9J  
private int size=0; Tw7]   
b;%t*?t  
private int[] queue; lh[?`+A  
Z #T  
public int get() { ,ga6   
return queue[1]; )_1 GPS  
} 2WTOu x*  
s_a jA  
public void remove() { P8Wv&5A  
SortUtil.swap(queue,1,size--); Bhv$   
fixDown(1); XT4Gz|k  
} ]jYFrOMy4S  
file://fixdown SZEi+CRs0  
private void fixDown(int k) { tJybR"NQ  
int j; tbWf m5$  
while ((j = k << 1) <= size) { !-.GfI:q  
if (j < size %26amp;%26amp; queue[j] j++; OQ- Hn -H  
if (queue[k]>queue[j]) file://不用交换 Nke!!A}\|  
break; V$sY3,J7A%  
SortUtil.swap(queue,j,k); 2:_6nWl  
k = j; =#v? }JG  
} mBE&>}G<  
} P#,;)HF  
private void fixUp(int k) { *yaS^k\  
while (k > 1) { R|v'+bv  
int j = k >> 1; H]pI$t3~  
if (queue[j]>queue[k]) FJ-H ;  
break; XbqMWQN*  
SortUtil.swap(queue,j,k); ]8}51y8  
k = j; yu)^s!UY;  
} AYgXqmH~+  
} fCwE1r*^  
DU0/if9.  
} fGO\f;P  
^lAM /  
} 4(|yl^w  
A4'5cR9T!  
SortUtil: 3+15 yEeA  
! 5NuFLOf  
package org.rut.util.algorithm; 8AX_y3$  
:n QlS  
import org.rut.util.algorithm.support.BubbleSort; 0/b  _T  
import org.rut.util.algorithm.support.HeapSort; h%krA<G9  
import org.rut.util.algorithm.support.ImprovedMergeSort; o6d x\  
import org.rut.util.algorithm.support.ImprovedQuickSort; t* =[RS*  
import org.rut.util.algorithm.support.InsertSort; r!+{In+Z  
import org.rut.util.algorithm.support.MergeSort; W*t] d  
import org.rut.util.algorithm.support.QuickSort; Xv|=RNz  
import org.rut.util.algorithm.support.SelectionSort; @phVfP"M  
import org.rut.util.algorithm.support.ShellSort; i=cST8!8N  
KWZhCS?[(  
/** Zym6btc  
* @author treeroot REU,"  
* @since 2006-2-2 sVK?sBs]  
* @version 1.0 IQRuqp KL  
*/ v6s,lC5qR  
public class SortUtil { B*,)@h  
public final static int INSERT = 1; lI 4tW=  
public final static int BUBBLE = 2; $[A\i<#  
public final static int SELECTION = 3; tqZ+2c<W3  
public final static int SHELL = 4; NS~;{d \  
public final static int QUICK = 5; & cSVOsi  
public final static int IMPROVED_QUICK = 6; )63 $,y-;$  
public final static int MERGE = 7; =c'4rJ$+  
public final static int IMPROVED_MERGE = 8; L%T(H<G  
public final static int HEAP = 9; {d'-1z"q  
pA6KiY&  
public static void sort(int[] data) { EUi 70h +  
sort(data, IMPROVED_QUICK); yQE'!m  
} E4L?4>V@\  
private static String[] name={ njF$1? )sq  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Lr:Qc#2  
}; ?: yz/9(  
du66a+@t  
private static Sort[] impl=new Sort[]{ x}yl Rg`[  
new InsertSort(), IHni1  
new BubbleSort(), Gv_~@MN  
new SelectionSort(), wQSye*ec  
new ShellSort(), } #rTUX  
new QuickSort(), Q$c6l[(g  
new ImprovedQuickSort(), T&?g)  
new MergeSort(), -GA F>  
new ImprovedMergeSort(), c]PTU2BB8  
new HeapSort() lPZ(c%P  
}; n^Ca?|} ,  
5 wrRtzf  
public static String toString(int algorithm){ x#J9GP.  
return name[algorithm-1]; gSz<K.CT  
} x9"Cm;H%  
H OR8Jwf:  
public static void sort(int[] data, int algorithm) { 9{*{Ba  
impl[algorithm-1].sort(data); P.'.KZJ:WD  
} ;!MQ@Fi^  
%.Ma_4o Z  
public static interface Sort { rD].=.?1  
public void sort(int[] data); q 84*5-  
} FH+X<  
5To@d|{  
public static void swap(int[] data, int i, int j) {  Y~WdN<g  
int temp = data; v Y0bK-  
data = data[j]; ~5f&<,p!  
data[j] = temp; \8`7E1d  
} QB*,+u4  
} i6WH^IQM  
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