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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。 ls 5iE  
插入排序: E?XaU~cpc  
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package org.rut.util.algorithm.support; %vJHr!x  
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import org.rut.util.algorithm.SortUtil; Sr aZxuPg>  
/** OT])t<TF6  
* @author treeroot +{I_%SsG  
* @since 2006-2-2 `uMEK>b  
* @version 1.0 Y7}>yC/GY  
*/ :G1ddb&0+  
public class InsertSort implements SortUtil.Sort{ x"12$7 9=  
:]-oo*xP  
/* (non-Javadoc) V^2_]VFj  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =#G 2}8mQD  
*/ N*-tBz  
public void sort(int[] data) { Q*smH-Sw  
int temp; m;OvOc,  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); c1'@_Is  
} X,|8Wpi=  
} FXof9fa_B  
} N6y9'LGG`  
|RiJ>/ MK\  
} ii)# (b:V  
K|7"YNohfG  
冒泡排序: Ht Fr(g\"$  
uDDa >Ka#+  
package org.rut.util.algorithm.support; Ap dXsL  
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import org.rut.util.algorithm.SortUtil; l$;"yVdks  
{[o NUzcd  
/** ff#7}9_mh  
* @author treeroot \3 SY2g8+  
* @since 2006-2-2 ?gE=hh  
* @version 1.0 dDaV2:4E  
*/ ~`OX}h/Z  
public class BubbleSort implements SortUtil.Sort{ D|LO!,=b  
y7,fFUKl  
/* (non-Javadoc) Js,!G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p27Dc wov  
*/ )O1]|r7v  
public void sort(int[] data) { i1 E|lp)  
int temp; *'/,  
for(int i=0;i for(int j=data.length-1;j>i;j--){ P>7Xbm,VP  
if(data[j] SortUtil.swap(data,j,j-1); x>#{C,Fi  
} B@,r8)D  
} .q@?sdGD  
} Ww]$zd-bo  
} ;'"'|} xn  
$p0nq&4c  
} A WR :~{  
5p0~AN)  
选择排序: tDK@?PfKz  
|`T(:ZKXZ2  
package org.rut.util.algorithm.support; CY1WT  
+ Iyyk02V  
import org.rut.util.algorithm.SortUtil; &`D$w?beg  
U zy@\  
/** Mg2+H+C~:  
* @author treeroot ]&*POri&  
* @since 2006-2-2 9p{ 4-]  
* @version 1.0  =z.j{%  
*/ G]K1X"W?  
public class SelectionSort implements SortUtil.Sort { )pWgt5:7~  
oB:7R^a  
/* \`n(JV  
* (non-Javadoc) l;; 2\mL?  
* FOTe, F.8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  >G]JwO  
*/ Ebnb-Lze,  
public void sort(int[] data) { wNf:_^|}  
int temp; UUt"8]@[  
for (int i = 0; i < data.length; i++) { \((iR>^|  
int lowIndex = i; dfDjOZSL  
for (int j = data.length - 1; j > i; j--) { m%HT)`>bg  
if (data[j] < data[lowIndex]) { p*g Fr hm  
lowIndex = j; Xoe|]@U`  
} S,&LH-ps   
} VE |:k:};  
SortUtil.swap(data,i,lowIndex); ^h[6{F~J  
} _{*} )&!M  
} ZbFD|~[ V  
b fxE}>  
} 5nG\J g7  
/JD}b[J$  
Shell排序: wLV,E,gM  
ng1E'c]0@  
package org.rut.util.algorithm.support; F @PPhzZ  
iQG!-.aX  
import org.rut.util.algorithm.SortUtil; tr0b#4  
W5|{A])N  
/** %BI8m|6  
* @author treeroot ;d?BVe?  
* @since 2006-2-2 Xb _ V\b0  
* @version 1.0 S:xXD^n#H  
*/ Hg#t SE  
public class ShellSort implements SortUtil.Sort{ c1H.v^Y5  
V+gZjuN$  
/* (non-Javadoc) {]CZgqE{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LO`0^r  
*/ 46?z*~*G  
public void sort(int[] data) { W{,fpm  
for(int i=data.length/2;i>2;i/=2){ 529; _|  
for(int j=0;j insertSort(data,j,i); K; #FU  
} #VQZ"7nI@  
} VfnL-bDGV  
insertSort(data,0,1); W|PAI [N  
} r_7%|T8  
vXJs.)D7  
/** P;5)Net1X  
* @param data OM EwGr(  
* @param j NLsF6BX/-  
* @param i wT@Z|.)  
*/ iq;\},  
private void insertSort(int[] data, int start, int inc) { g\aO::  
int temp; +ai3   
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); N.|F8b]v  
} {v"f){   
} mR0`wrt  
} !?,, ZD  
7K"3[.  
} 1g;2e##)  
Kw fd S(  
快速排序: }&v}S6T  
L$ T2 bul  
package org.rut.util.algorithm.support; "aGmv9\  
rZUTBLZ`j  
import org.rut.util.algorithm.SortUtil; (kL"*y/"p  
4 ]oe`yx  
/** w-).HPe  
* @author treeroot jFQy[k-B  
* @since 2006-2-2 OTy!Q,0$.  
* @version 1.0 Q& [!+s:2J  
*/ H I9/  
public class QuickSort implements SortUtil.Sort{ 2CC"Z  
c)EYX o  
/* (non-Javadoc) z%}"=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |!oC7!+0^  
*/ l+;S$evY  
public void sort(int[] data) { Au2^ T1F  
quickSort(data,0,data.length-1); +w0Wg.4V  
} D0J{pAJ  
private void quickSort(int[] data,int i,int j){ %|jS`kj  
int pivotIndex=(i+j)/2; ` nX, x-UM  
file://swap )!(gS,  
SortUtil.swap(data,pivotIndex,j); <$A,|m  
b:(+d"S  
int k=partition(data,i-1,j,data[j]); H{cOkuy  
SortUtil.swap(data,k,j); FK BRJ5O  
if((k-i)>1) quickSort(data,i,k-1); p\zqZ=s  
if((j-k)>1) quickSort(data,k+1,j); FBE|pG7  
+Xg:*b9So  
} 7FwtBO  
/** ".jO2GO^  
* @param data Sct  
* @param i WsTIdr36x  
* @param j F=F84 _+K  
* @return ww|fqx?  
*/ 'D W|a  
private int partition(int[] data, int l, int r,int pivot) { g}~s"Sz  
do{ bK "I9T #  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); zlLZ8b+  
SortUtil.swap(data,l,r); 3Ei^WDJ  
} W[jg+|  
while(l SortUtil.swap(data,l,r); C6ql,hR^h`  
return l; Gs#9'3_U5  
} \J:+Wl.9A  
k4#j l<R  
} yz [pF  
aG1Fj[,  
改进后的快速排序: - ~z@W3\  
T4x%3-4 ;  
package org.rut.util.algorithm.support; x& _Y( bHA  
wPU5L*/*i  
import org.rut.util.algorithm.SortUtil; Y6wr}U  
!>(uhuTBF  
/** :V(C+bm *  
* @author treeroot fBX@ MedC  
* @since 2006-2-2 %:C6\4  
* @version 1.0 gLMb,buqC  
*/ WX Fm'5Vr  
public class ImprovedQuickSort implements SortUtil.Sort { G)0 4'|W  
/[c_,G" "  
private static int MAX_STACK_SIZE=4096; @<DRFP  
private static int THRESHOLD=10; :%sG'_d  
/* (non-Javadoc) 9>{ml&$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @+;.W>^h  
*/ #~Xj=M%  
public void sort(int[] data) { ;)ay uS sQ  
int[] stack=new int[MAX_STACK_SIZE]; H[w';u[%  
G=qlE?j`j  
int top=-1; FqyxvL.  
int pivot; '&Ur(axs  
int pivotIndex,l,r; (bm> )U=  
`U0XvWPr[  
stack[++top]=0; /'oo;e  
stack[++top]=data.length-1; 9ad`q+kY  
C32*RNG?U  
while(top>0){ f)vnm*&-  
int j=stack[top--]; ~v&Q\>'  
int i=stack[top--]; B\D)21Ik}%  
}^I36$\  
pivotIndex=(i+j)/2; i:Y5aZc/Ds  
pivot=data[pivotIndex]; t7-r YY(  
~_BjcY  
SortUtil.swap(data,pivotIndex,j); [vI ;A !  
9@qkj 4w  
file://partition p` ~=v4;b  
l=i-1; *X3wf`C?  
r=j; tF[) Y#  
do{ m +A4aQ9  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 5XT^K)'  
SortUtil.swap(data,l,r); z81dm  
} Y4YZM  
while(l SortUtil.swap(data,l,r); $,Q] GIC  
SortUtil.swap(data,l,j); x7B;\D#`i/  
JCxQENsVqB  
if((l-i)>THRESHOLD){ WBKf)A^S  
stack[++top]=i; S9DXd]6q_  
stack[++top]=l-1; ;/NC[:'$D  
} 7 cV G?Wr  
if((j-l)>THRESHOLD){ /nv*OKS|  
stack[++top]=l+1; )Q9Qo)D T  
stack[++top]=j; UNSXr`9  
} Z|KDi `S  
nh7_ jEX  
} UvMkL  
file://new InsertSort().sort(data); _zbIS&4  
insertSort(data); /IcGJ&;  
} Q~.t8g/  
/** {zd[8TJ~xa  
* @param data +DQUL|\  
*/ 7oZPb  
private void insertSort(int[] data) { z\FBN=54z  
int temp; 4'3;{k$z  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 0"j:-1  
} %4` U' j  
} O\uIIuy  
} tvn o3"  
3AENY@*  
} P cbhylKd  
+*W lj8  
归并排序: jD<xpD  
6 o   
package org.rut.util.algorithm.support; 5{W Aw !  
erv94acq  
import org.rut.util.algorithm.SortUtil; hrJ(][8  
Yt=)=n  
/** t<c7%i#Od  
* @author treeroot ObZhQ.&  
* @since 2006-2-2 RFsUb:%V7-  
* @version 1.0 q'trd};xR  
*/ L!Tvz(_7f6  
public class MergeSort implements SortUtil.Sort{ 8wO4;  
vr"Pr4z4i  
/* (non-Javadoc) &kvmLOI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vx7=I\1  
*/ AJ}m2EH  
public void sort(int[] data) { Uufig)6  
int[] temp=new int[data.length]; ?zP 2   
mergeSort(data,temp,0,data.length-1); t+d7{&B  
} [&P @0F n  
va QsG6q[  
private void mergeSort(int[] data,int[] temp,int l,int r){ rF}Q(<Y86  
int mid=(l+r)/2; #c' B2Jn  
if(l==r) return ; }; 7I   
mergeSort(data,temp,l,mid); mc`Z;D/mt  
mergeSort(data,temp,mid+1,r); jLn#%Ia}  
for(int i=l;i<=r;i++){ |<3x`l-`  
temp=data; sWse (_2  
}  mVS^HQ:  
int i1=l; Hr=|xw8.  
int i2=mid+1; P9:5kiP H  
for(int cur=l;cur<=r;cur++){ THy?Y  
if(i1==mid+1) nT01B1/<]  
data[cur]=temp[i2++]; %R?WkG  
else if(i2>r) &=S:I!9;;  
data[cur]=temp[i1++]; `, ]ui*  
else if(temp[i1] data[cur]=temp[i1++]; 1D)0\#><  
else hMz)l\0  
data[cur]=temp[i2++]; `z q+Xl  
} z{ M2tLNb  
} ' A+L #  
>h:'Z*9  
} <7)sS<I  
]Ue aXwaU  
改进后的归并排序: IDf\! QGx  
}'}n~cA.{  
package org.rut.util.algorithm.support; %${$P+a`D  
c zT2f  
import org.rut.util.algorithm.SortUtil; o+8H:7,o'  
o,?G(  
/** =rZ'!Pa  
* @author treeroot ]zAwKuIK  
* @since 2006-2-2 u{HO6 s\S  
* @version 1.0 p<\!{5:   
*/ &N=vs  
public class ImprovedMergeSort implements SortUtil.Sort { kf<c[su  
CvZ\Z472.j  
private static final int THRESHOLD = 10; A4rMJ+!5  
%A3m%&(m&%  
/* w2s06`g  
* (non-Javadoc) x8C\&ivn  
* 0#=xUk#LP`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dg~lz80  
*/ ~a4Y8r  
public void sort(int[] data) { rqp]{?33  
int[] temp=new int[data.length]; p-\->_9)y`  
mergeSort(data,temp,0,data.length-1); 6&;GC<].(y  
} KX;JX*)J  
?Bq^#i |m  
private void mergeSort(int[] data, int[] temp, int l, int r) { 3O-vO=D  
int i, j, k; C+M]"{Y+  
int mid = (l + r) / 2; j[R.UB3J  
if (l == r) S[7^#O.)  
return; v,*C>u\3s  
if ((mid - l) >= THRESHOLD) g5pFr=NV  
mergeSort(data, temp, l, mid); :JX2GRL4  
else 5_](N$$  
insertSort(data, l, mid - l + 1); Iw.!*0$  
if ((r - mid) > THRESHOLD) |cnps$fk~  
mergeSort(data, temp, mid + 1, r); 9.xRDk  
else #C.  
insertSort(data, mid + 1, r - mid); #Ff8_xhP2  
}wp/,\_ >  
for (i = l; i <= mid; i++) { xk/-TXB 0  
temp = data; ;a>u7rw  
} W,H8B%e  
for (j = 1; j <= r - mid; j++) { KIv_ AMr  
temp[r - j + 1] = data[j + mid]; QnP3U  
} %x{kd8>u!  
int a = temp[l]; / yBrlf  
int b = temp[r]; /W*Z.  
for (i = l, j = r, k = l; k <= r; k++) { ]&P\|b1*g  
if (a < b) { {K"hlu[  
data[k] = temp[i++]; O9>$(`@I  
a = temp; VJTO:}Q  
} else { uY>M3h#qx  
data[k] = temp[j--]; $+n6V2^K)7  
b = temp[j]; `) cH(Rj  
} iSoQ1#MP)2  
} XKws_  
} u;t~ z  
Z|x|8 !D  
/** ,m]5j_< }  
* @param data Bf #cBI  
* @param l }Md;=_TP  
* @param i -@_v@]:  
*/ Q 318a0  
private void insertSort(int[] data, int start, int len) { e Bxm  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); E X'PRNB,  
} a9p:k ]{  
} bFajK;  
} ILAn2W  
} )kI**mI}  
7p]Izx8][  
堆排序: Ic_NQ<8  
>l AtfN='  
package org.rut.util.algorithm.support; w$9LcN  
<,GVrVH=t"  
import org.rut.util.algorithm.SortUtil;  &qdhxc4  
A&Aj!#  
/** 0mUVa=)D  
* @author treeroot g;p} -=  
* @since 2006-2-2 ARf{hiV6Wt  
* @version 1.0 Kw?3joy  
*/ -j]k^  
public class HeapSort implements SortUtil.Sort{ ;9h;oB@  
7`A]X,:  
/* (non-Javadoc) D@68_sn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O8bxd6xb  
*/ Kf BT'6t  
public void sort(int[] data) { J=$\-  
MaxHeap h=new MaxHeap(); TE+>|}]R  
h.init(data); J@$~q}iG  
for(int i=0;i h.remove(); !*"fWahv  
System.arraycopy(h.queue,1,data,0,data.length); aif;h! ?y  
} /A-WI x  
: (X3?%  
private static class MaxHeap{ u)<s*jk  
-c0ypz  
void init(int[] data){ 7>j~;p{  
this.queue=new int[data.length+1]; 5a_8`csu  
for(int i=0;i queue[++size]=data; CKK}Z;~:  
fixUp(size); ]r|oNGD)G  
} :[_ms d  
} $+7uB-KsU  
'-RacNY  
private int size=0; }}tbOD)t  
< z2wt  
private int[] queue; nDC0^&  
Su2{nNC>  
public int get() { -%yrs6  
return queue[1]; 9|}Pf_5]%[  
} }/ vW"&h-  
Yjjh}R#  
public void remove() { <R@,wzK  
SortUtil.swap(queue,1,size--); ed q,:  
fixDown(1); eyyME c!  
} bqAW  
file://fixdown [#q>Aq$11  
private void fixDown(int k) { V9v20iX  
int j; XhM!pSl\  
while ((j = k << 1) <= size) { pzz* >Y  
if (j < size %26amp;%26amp; queue[j] j++; I!S Eb  
if (queue[k]>queue[j]) file://不用交换 !>`Fg>uy  
break; JaRsm'SIk~  
SortUtil.swap(queue,j,k); _&#{cCo:  
k = j; R03 Te gwA  
} G7nhUg  
} [ncK+rGAc  
private void fixUp(int k) { !&rd#ZBn  
while (k > 1) { ~pQN#C)CO>  
int j = k >> 1; MWh Y&I+  
if (queue[j]>queue[k]) 'V]&X.=zC  
break; "GK9Y  
SortUtil.swap(queue,j,k); ^E.L8  
k = j; !o /=,ZIx  
} 1Hr}n6s  
} 22CET9iCe  
+ GI906K  
} 6UeYZ g  
R{H[< s+n  
} e(? w h   
O1z]d3x  
SortUtil: 'f-r 6'_ZX  
06S R74  
package org.rut.util.algorithm; ~Ba=nn8Cq  
:D)(3U5  
import org.rut.util.algorithm.support.BubbleSort; gQ>kDl^$Ls  
import org.rut.util.algorithm.support.HeapSort; HYfGu1j?X  
import org.rut.util.algorithm.support.ImprovedMergeSort; fgdR:@]-  
import org.rut.util.algorithm.support.ImprovedQuickSort; wu)+n\mt'  
import org.rut.util.algorithm.support.InsertSort; EsMX #1>/m  
import org.rut.util.algorithm.support.MergeSort; lhGJ/By- -  
import org.rut.util.algorithm.support.QuickSort; Kgu8E:nL  
import org.rut.util.algorithm.support.SelectionSort; I x%>aee  
import org.rut.util.algorithm.support.ShellSort; kUf i  
Cd}^&z  
/** e|\xF V=4  
* @author treeroot gA!@oiq@  
* @since 2006-2-2 i7Up AHd/  
* @version 1.0 }uZs)UQ|$  
*/ y QW7ng7D0  
public class SortUtil { S<"Fp1#"l  
public final static int INSERT = 1; f82%nT  
public final static int BUBBLE = 2; [k6I#v<&  
public final static int SELECTION = 3; SeD}H=,@  
public final static int SHELL = 4; -&5YRfr!  
public final static int QUICK = 5; aTuu",f  
public final static int IMPROVED_QUICK = 6; -fq  
public final static int MERGE = 7; K($l>PB,y@  
public final static int IMPROVED_MERGE = 8; cq4~(PXT g  
public final static int HEAP = 9; W,<q!<z\t  
!!y]pMjJa@  
public static void sort(int[] data) { t}YcB`q)  
sort(data, IMPROVED_QUICK); ?*fY$93O  
} vk92j?  
private static String[] name={ b6N[t _,  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" S(zp_  
}; ;Bs~E  
C`[<6>&y  
private static Sort[] impl=new Sort[]{ 8:,($a/KF  
new InsertSort(), kFn/dQ4|  
new BubbleSort(), m4mE7Wn.3  
new SelectionSort(), O[Vet/^)  
new ShellSort(), Muo E~K2  
new QuickSort(), <\^0!v  
new ImprovedQuickSort(), QqA=QTZ}  
new MergeSort(), rAH!%~  
new ImprovedMergeSort(), bhqSqU}6~  
new HeapSort() h_%q`y,  
}; .^Sgl o  
heVk CM :  
public static String toString(int algorithm){ "v8p<JfB`  
return name[algorithm-1]; V?uT5.B2  
} @+gr/Pul^  
7~Y\qJ4b  
public static void sort(int[] data, int algorithm) { MCKN.f%lP  
impl[algorithm-1].sort(data); g#J` 7n  
} PI9,*rOy  
{&=+lr_h?  
public static interface Sort { YB38K(  
public void sort(int[] data); TN(Vzs%  
} $UR:j8C{p$  
&93{>caf+  
public static void swap(int[] data, int i, int j) { o,6t: ?Z  
int temp = data; 0k]ApW  
data = data[j]; ?jmP] MM  
data[j] = temp; DrK]U}3fh"  
} xXe3E&  
} @ ^{`!>Vt  
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