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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。 0PD=/fh[  
插入排序: U!i1~)s  
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package org.rut.util.algorithm.support; e|}B;<  
aY-7K._</  
import org.rut.util.algorithm.SortUtil; %E2b{Y;  
/** +3F%soum95  
* @author treeroot b.j$Gna>Q  
* @since 2006-2-2 Tx>V$+al  
* @version 1.0 |/;;uK,y  
*/ PH$C."Vv  
public class InsertSort implements SortUtil.Sort{ ;-AC}jG  
Vbv)C3ezD  
/* (non-Javadoc) ryNe=9p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `gAW5 i-z5  
*/ %uw7sGz\  
public void sort(int[] data) { v\o m  
int temp; hVIv->  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); N*+L'bO  
} #y-R*4G  
} kvG.?^ v  
} ]P/i}R:  
(q@%eor&}  
} Ae\:{[c_D  
2<9&OL  
冒泡排序: 5PsjGvm.%  
q|V|Jl  
package org.rut.util.algorithm.support; ,T*\9' Q  
~BiLzT1,  
import org.rut.util.algorithm.SortUtil; vmg[/#  
M`n0 q y  
/** D#P]tt.Z   
* @author treeroot 5"y)<VLJX  
* @since 2006-2-2 0avtfQ +f  
* @version 1.0 +%H=+fJ2}  
*/ U1`pY:P  
public class BubbleSort implements SortUtil.Sort{ P?^%i  
$xCJ5M4  
/* (non-Javadoc) 6LrI,d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \l%##7DRp]  
*/ WcQkeh3n  
public void sort(int[] data) { BiDyr  
int temp; A'$>~Ev  
for(int i=0;i for(int j=data.length-1;j>i;j--){ >;lrH&  
if(data[j] SortUtil.swap(data,j,j-1); k!bG![Ie|  
} |qVM`,%L  
} u{7->[=  
} -oTdi0P  
} * =*\w\ te  
L1WvX6  
} *pDS%,$xe  
p( )LQT!  
选择排序: !L( )3=  
k{O bm g  
package org.rut.util.algorithm.support; kZhd^H.  
IwBO#HR~)  
import org.rut.util.algorithm.SortUtil; D<:zw/IRE  
cY Qm8TR<  
/** (>,b5g  
* @author treeroot rp^:{6O  
* @since 2006-2-2 @REMl~"D5  
* @version 1.0 4 L 5$=V  
*/ bN6i*) }  
public class SelectionSort implements SortUtil.Sort { HYG1BfEaW  
`4?|yp.|L  
/* unNN&m#@  
* (non-Javadoc) : sw@1  
* $d,/(*Y#-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pFV~1W:  
*/ ?o`:V|<v  
public void sort(int[] data) { }#2(WHf =<  
int temp; +=d=  
for (int i = 0; i < data.length; i++) { ]826kpq_  
int lowIndex = i; q: X^V$`  
for (int j = data.length - 1; j > i; j--) { ?*[35XUd  
if (data[j] < data[lowIndex]) { ;JMmr-@  
lowIndex = j; Jl6lZd(Np  
} ~]`U)Aw  
} ;)SWwhQ  
SortUtil.swap(data,i,lowIndex); |qwx3 hQ?  
} FUZuS!sJ  
} ZD7qw*3+  
=(Y0wZP|  
} W`P>vK@=  
g_! xD;0  
Shell排序: GctV  
]rNxvFN*j  
package org.rut.util.algorithm.support; 0P!Fci/t  
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import org.rut.util.algorithm.SortUtil; G'';VoW=   
9Zmq7a E  
/** 1~},}S]id  
* @author treeroot 3lEP:Jp  
* @since 2006-2-2 3xKgj5M  
* @version 1.0 F~hH>BH9  
*/ [ wnaF|h  
public class ShellSort implements SortUtil.Sort{ ,rF!o_7  
g[ uf e<  
/* (non-Javadoc) yq<W+b/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `B:hXeI  
*/ IS`ADDU[S  
public void sort(int[] data) { (d* | |"  
for(int i=data.length/2;i>2;i/=2){ O3%#Q3c>3  
for(int j=0;j insertSort(data,j,i); _^ic@h3'X~  
} \PFjw9s  
} ${}9/(x/^  
insertSort(data,0,1); t<$J 3h/"  
} hN\sC9a1  
Q`Q"p  
/** %$Xt1ub6(  
* @param data T|j=,2_  
* @param j R9D2cu,{  
* @param i QFoCi&  
*/ ?YDMl  
private void insertSort(int[] data, int start, int inc) { l Ft&cy2  
int temp; }odjaM}5Nc  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); I3izLi  
} \" m&WFm  
} Lxv_{~I*  
} {ot6ssT=D  
>IA1 \?(  
} .|TF /b]  
yX%> %#$  
快速排序: qK~]au:C  
C@-cLk  
package org.rut.util.algorithm.support; St> E\tXp  
=4U$9jo!;  
import org.rut.util.algorithm.SortUtil; 'YYT1H)  
N=~DSsw  
/** `Hv"^o  
* @author treeroot E @Rb+8},"  
* @since 2006-2-2 5lM 3In@  
* @version 1.0 7 n^1H[q  
*/ p6)6Gcx  
public class QuickSort implements SortUtil.Sort{ Bsd~_y}8  
wAzaxeV=  
/* (non-Javadoc) dldS7Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xgM\6e  
*/ 9;`hJ!r  
public void sort(int[] data) { }g|9P SbJ  
quickSort(data,0,data.length-1); Sco'] ^#(  
} Gc5mR9pV   
private void quickSort(int[] data,int i,int j){ g0s4ZI+T  
int pivotIndex=(i+j)/2; i~M-V=Zg  
file://swap {~(XO@;b  
SortUtil.swap(data,pivotIndex,j); w_LkS/  
$YJi]:3&  
int k=partition(data,i-1,j,data[j]); WU.eeiX  
SortUtil.swap(data,k,j); YdB/s1|G  
if((k-i)>1) quickSort(data,i,k-1); KF!d?  
if((j-k)>1) quickSort(data,k+1,j); l2wu>Ar7.  
AP4s_X+=  
} #!_ViG )2^  
/** )oM% N  
* @param data <$#^)]Ts  
* @param i 9\kEyb$F=  
* @param j 2n#H%&^?a  
* @return _6YfPk+  
*/ 2uF'\y  
private int partition(int[] data, int l, int r,int pivot) { ec*Ni|`Z'  
do{ N f}ZG  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); fl4'dv  
SortUtil.swap(data,l,r); i~5'bSq c  
} A,7* 52U  
while(l SortUtil.swap(data,l,r); ?/~Q9My  
return l; ;rnhv:Iw  
} B&EUvY '  
SK*<H~2  
} 5B3sRF}  
6\y?+H1  
改进后的快速排序: KmWd$Qy,  
'mF&`BN}b  
package org.rut.util.algorithm.support; 64^3ve3/a=  
8zjJshE/  
import org.rut.util.algorithm.SortUtil; *fLVzYpo  
>yLdrf  
/** wawJZ+V  
* @author treeroot 9w1`_r[J  
* @since 2006-2-2 tU>7 jo[-p  
* @version 1.0 [3x*47o"z  
*/ RS2uk 7MB  
public class ImprovedQuickSort implements SortUtil.Sort { tvUCd}  
0^F!-b^z  
private static int MAX_STACK_SIZE=4096; w(*},  
private static int THRESHOLD=10; (SA^> r  
/* (non-Javadoc) Ac}5,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q*e\I8R}  
*/ 3aJYl3:0B  
public void sort(int[] data) { vSCJ xSt#e  
int[] stack=new int[MAX_STACK_SIZE]; m;U_oxb  
Nkn2\ w  
int top=-1; @R`Ao9n9V  
int pivot; _Y)Wi[  
int pivotIndex,l,r; CWb*bw0  
xE*. ,:,&  
stack[++top]=0; :edy(vC<  
stack[++top]=data.length-1; D&DbxTi  
NuXII-  
while(top>0){ ( yB]$  
int j=stack[top--]; *0_Q0SeE,o  
int i=stack[top--]; Fnd_\`9{  
ku#WQL  
pivotIndex=(i+j)/2; cXb&Rm' L  
pivot=data[pivotIndex]; N).'>  
%Vk77(  
SortUtil.swap(data,pivotIndex,j); lnK#q .]  
N%)q.'M  
file://partition E9' 2_e  
l=i-1; v z&88jt  
r=j; .d?LRf  
do{ b&9~F6aM  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); a.a ,_  
SortUtil.swap(data,l,r); xrv0%  
} VL|Z+3L  
while(l SortUtil.swap(data,l,r); WS%yV|e  
SortUtil.swap(data,l,j); *n6L3"cO  
N686~  
if((l-i)>THRESHOLD){ thE9fr/  
stack[++top]=i; xl@~K^c]  
stack[++top]=l-1; beNy5~M$  
} BKYyc6iE  
if((j-l)>THRESHOLD){ D&qJ@PR  
stack[++top]=l+1; `A-  
stack[++top]=j; &q#. >  
} jsP+,brO  
5kojh _\  
} ,wngS=  
file://new InsertSort().sort(data); 2UxmKp[  
insertSort(data); ]zn3nhBI  
} .Ad9(s  
/** 69`*u<{PC  
* @param data Mh {>#Gs  
*/ #7KR`H  
private void insertSort(int[] data) { ;s-@m<  
int temp; 45OAJ?N  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); T1'\!6_5  
} ,sT5TS q  
} 1MmEP  
} +k[w)7Q  
c0;rvw7  
} ~wO-Hgd  
Xg;;< /Z  
归并排序: ?Cx=!k.  
3[8p,wx  
package org.rut.util.algorithm.support; X#zp,7j?  
9'@G7*Yn  
import org.rut.util.algorithm.SortUtil; 2\;/mQI2A  
lS#^v#uS  
/** i1'G_bo4F7  
* @author treeroot J~50#vHY  
* @since 2006-2-2 12;YxW>[  
* @version 1.0 ~Yc!~Rz  
*/ h4+*ssnYV  
public class MergeSort implements SortUtil.Sort{ 6Nt/>[  
TKgN31`  
/* (non-Javadoc) s+z5"3'n  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?[P>2oz  
*/ NEvNj  
public void sort(int[] data) { +L@\/=;G  
int[] temp=new int[data.length]; `r-3"or/$  
mergeSort(data,temp,0,data.length-1); ,eWLig  
} PB!XApTb  
E0yx @Vx  
private void mergeSort(int[] data,int[] temp,int l,int r){ pMAP/..+2  
int mid=(l+r)/2; >Bu9D  
if(l==r) return ; U3` ?Z`i(  
mergeSort(data,temp,l,mid); 3s67)n  
mergeSort(data,temp,mid+1,r); FFN Sn  
for(int i=l;i<=r;i++){ <XtE|LG  
temp=data; z(EpJK=`_  
} /Ov1eQBNG  
int i1=l; : @eHV=|+>  
int i2=mid+1; =Y5m% ,Bq  
for(int cur=l;cur<=r;cur++){ y7%SHYC p[  
if(i1==mid+1) t\TxK7i  
data[cur]=temp[i2++]; &flRrJ  
else if(i2>r) |\/\FK]?]  
data[cur]=temp[i1++]; YDj5+'y  
else if(temp[i1] data[cur]=temp[i1++]; 29VX-45  
else os&FrtDg  
data[cur]=temp[i2++]; +|7N89l  
} >d *`K  
} /y6f~F  
]61HQ  
} !pkIaCxs  
dv+ZxP%g  
改进后的归并排序: jzGK(%sw"  
G%AO%II  
package org.rut.util.algorithm.support; k_ywwkG9lU  
6-0sBB9=u  
import org.rut.util.algorithm.SortUtil; EtaKo}!A}  
V*5v JF0j  
/** W$()W)   
* @author treeroot kS=nH9  
* @since 2006-2-2 G6}&k[d5%  
* @version 1.0 iyd$_CJz  
*/ Uzc p  
public class ImprovedMergeSort implements SortUtil.Sort { 'GX x|.  
VJT /9O)Z|  
private static final int THRESHOLD = 10; sQ,xTWdj  
R! On  
/* \AH5 zdK  
* (non-Javadoc) 0t}v@-abU  
* c$^v~lQS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B RskxyL&,  
*/ l|E4 7@#  
public void sort(int[] data) { (GC5r#AnS  
int[] temp=new int[data.length]; H9_iTGBQ  
mergeSort(data,temp,0,data.length-1); \w>Rmf'|  
} nqo1+OR  
S50}]5K  
private void mergeSort(int[] data, int[] temp, int l, int r) { a$Y{ut0t(  
int i, j, k; ~:o$}`mW  
int mid = (l + r) / 2; kWVk^ ,  
if (l == r) OFyy!r@?  
return; C;K+ITlJ  
if ((mid - l) >= THRESHOLD) vmrs(k "d#  
mergeSort(data, temp, l, mid); SA&(%f1d  
else <FBBR2  
insertSort(data, l, mid - l + 1); =b>TFB=*N  
if ((r - mid) > THRESHOLD) f\_PNZCc  
mergeSort(data, temp, mid + 1, r); Sw,*#98  
else l~f3J$OkJ  
insertSort(data, mid + 1, r - mid); D&2NO/ R  
gh\u@#$8  
for (i = l; i <= mid; i++) { :Dw_$  
temp = data; n8=D zv0  
} 1Q!^*D  
for (j = 1; j <= r - mid; j++) { :q*w_*w  
temp[r - j + 1] = data[j + mid]; uax0%~O\  
} 5X+`aB  
int a = temp[l]; 2|& S2uq  
int b = temp[r]; +h+ 7Q'k  
for (i = l, j = r, k = l; k <= r; k++) { ~mXzQ be p  
if (a < b) { h ~yTkN]  
data[k] = temp[i++]; 7x>^ip"7  
a = temp; z EtsMU  
} else { '@hUmrl  
data[k] = temp[j--]; La9}JvQoX  
b = temp[j]; d 94k  
} E z}1Xse  
} nb=mY&q}~  
} ox&? `DO  
IauLT;!X  
/** .\ fpjQW  
* @param data *nJ,|T  
* @param l 0Atha>w^o~  
* @param i z{\tn.67  
*/ |e2s\?nB0S  
private void insertSort(int[] data, int start, int len) { ud5}jyJ  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); L{&2 P  
} =LV-n  
} jIe /X]  
} Q\kWQOB_  
} Q;y5E`G  
6JZ>&HA  
堆排序: e( @< /W  
WVpx  
package org.rut.util.algorithm.support; '%ilF1#  
]goJ- &  
import org.rut.util.algorithm.SortUtil; 7AT8QC`u  
aHuMm&  
/** }RadbJ{q=  
* @author treeroot P8By~f32_  
* @since 2006-2-2  EG`AkWy  
* @version 1.0 DoQ^caa@  
*/ I]W7FZ=o  
public class HeapSort implements SortUtil.Sort{ u3O@ccJ;  
EniV-Uj\D  
/* (non-Javadoc) ?.< Qgd  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )SJM:E  
*/ i'H]N8,A  
public void sort(int[] data) { Sxc)~y  
MaxHeap h=new MaxHeap(); TCRTC0_}k  
h.init(data); |\uj(|  
for(int i=0;i h.remove(); P8X9bW~GQ  
System.arraycopy(h.queue,1,data,0,data.length); uXFI7vV6P  
} K |=o-  
H%Vf$1/TF  
private static class MaxHeap{ z;oia!9z  
T~/>U&k}J  
void init(int[] data){ hGV_K"~I0  
this.queue=new int[data.length+1]; PZqp;!:xz  
for(int i=0;i queue[++size]=data; .tG3g:  
fixUp(size); uoE+:,P  
} @H#Fzoo.  
} 1T|")D  
d)!'5Zr M  
private int size=0; q:)PfP+  
}FS_"0  
private int[] queue; U"8Hw@  
80lhhqRC  
public int get() { #N`G2}1J  
return queue[1]; lq_UCCnv5  
} 2c[HA  
0M;El2 P$  
public void remove() { %/e'6g<  
SortUtil.swap(queue,1,size--); <t(H+ykh  
fixDown(1); 9FSa=<0wE  
} +8Q @R)3  
file://fixdown "t^RZ45  
private void fixDown(int k) { sz270k%[  
int j; eC<RM Q4  
while ((j = k << 1) <= size) { |g}r  
if (j < size %26amp;%26amp; queue[j] j++; };rp25i  
if (queue[k]>queue[j]) file://不用交换 x1g-@{8]j  
break; k%~;mu"4}  
SortUtil.swap(queue,j,k); J#Y0R"fo  
k = j; dF51_Kk  
} {'+{ASpO!  
} >>J$`0kM*  
private void fixUp(int k) {  q%d'pF  
while (k > 1) { ~{{S<S v  
int j = k >> 1; TC<Rg?&yb  
if (queue[j]>queue[k]) Ng;?hTw  
break; s'N<  
SortUtil.swap(queue,j,k); 3S_H&>K  
k = j; ~tfd9,t  
} LYYz=oZOE!  
} FY Flh^}  
\8ZVI98  
} hx@@[sKF7  
X(E`cH |  
} o9| OL  
YBj*c$.D0  
SortUtil: Xa>'DO2  
mgH~GKf^  
package org.rut.util.algorithm; @0EY5{&  
1mtYap4  
import org.rut.util.algorithm.support.BubbleSort; UZFs ]z!,k  
import org.rut.util.algorithm.support.HeapSort; }XUI1H]jk  
import org.rut.util.algorithm.support.ImprovedMergeSort; i^:#*Q-co  
import org.rut.util.algorithm.support.ImprovedQuickSort; k*2khh-  
import org.rut.util.algorithm.support.InsertSort; I:DAn!N-A*  
import org.rut.util.algorithm.support.MergeSort; Zbr e5&aU  
import org.rut.util.algorithm.support.QuickSort; %k?/pRv$>  
import org.rut.util.algorithm.support.SelectionSort; y,rdyt  
import org.rut.util.algorithm.support.ShellSort; LFi{Q{E)  
_oa*E2VN  
/** Yg5o!A  
* @author treeroot Lbrn8,G\  
* @since 2006-2-2 `Mg3P_}=  
* @version 1.0 56kqG}mg&  
*/ _\IA[-C+O  
public class SortUtil { hunlKIg  
public final static int INSERT = 1; !.#g   
public final static int BUBBLE = 2; : i.5 < f  
public final static int SELECTION = 3; sF :pwI5^  
public final static int SHELL = 4; ;,]4A{|  
public final static int QUICK = 5; ]Q.S Is  
public final static int IMPROVED_QUICK = 6; POl-S<QV  
public final static int MERGE = 7; 1jKj' 7/K  
public final static int IMPROVED_MERGE = 8; {I0!q"sF  
public final static int HEAP = 9; .EWjeVq  
G2n. NW#d4  
public static void sort(int[] data) { :8bq0iqsV  
sort(data, IMPROVED_QUICK); v0\M$@N[  
} a 01s'9Be  
private static String[] name={ o@ ^^;30  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ?r)>SB3(e  
}; 6IK>v*<  
5IzCQqOPgX  
private static Sort[] impl=new Sort[]{ @Jd eOL;  
new InsertSort(), mV"F<G; H  
new BubbleSort(), [-W~o.`  
new SelectionSort(), s H'FqV,)  
new ShellSort(), IAb.Z+ig  
new QuickSort(), ]o'dr r  
new ImprovedQuickSort(), *h?}~!AjY  
new MergeSort(), =kq<J-:#R  
new ImprovedMergeSort(), }YC=q  
new HeapSort() %( %EEt  
}; \(^]R,~*!b  
{9P(U\]e]k  
public static String toString(int algorithm){ &,Rye Q  
return name[algorithm-1]; LoJEchRK  
} 7r(c@4yPI  
eUu<q/FUMj  
public static void sort(int[] data, int algorithm) { F!I9)PSj  
impl[algorithm-1].sort(data); ) .V,zmI  
} +Swl$ab  
Om7 '_}  
public static interface Sort { 4},Y0QXw  
public void sort(int[] data); meap;p  
} BdvpG  
A2PeI"y  
public static void swap(int[] data, int i, int j) { ei]Q<vT6  
int temp = data; +-V4:@  
data = data[j]; i(# Fjp  
data[j] = temp; E.*wNah"U  
} *r~6R  
} WwKpZ67$R  
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