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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。 H1nQ.P]_  
插入排序: m'tk#C  
50&F#v%YB  
package org.rut.util.algorithm.support; +][P*/Ek  
$at|1+bQ  
import org.rut.util.algorithm.SortUtil; udFju&!W  
/** pG @iR*?  
* @author treeroot %?hLo8  
* @since 2006-2-2 6W=:`14  
* @version 1.0 \2pFFVT  
*/ A232"p_  
public class InsertSort implements SortUtil.Sort{ E5 oD|'=WA  
Y2-bU 7mo  
/* (non-Javadoc) >n~p1:$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Aa>gN  
*/ S=p u  
public void sort(int[] data) { l;A_Aii(  
int temp; MuGg z>CV[  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); wF8\  
} j\f$r,4  
} XL^N5  
} 3 \r@f_p  
<y!r~?  
} UwkX[u  
^4pKsO3ul  
冒泡排序: &|}IBu:T  
L_"(A #H:  
package org.rut.util.algorithm.support; T''+zk  
q-%KfZ@(|  
import org.rut.util.algorithm.SortUtil; Ki/5xK=s  
`HG19_Z  
/** 4QAIQQS  
* @author treeroot k!=GNRRZE  
* @since 2006-2-2 _|3TC1N$n  
* @version 1.0 ACO4u<M)  
*/ VtiqAh}4  
public class BubbleSort implements SortUtil.Sort{  IB{ZE/   
1 \*B.  
/* (non-Javadoc) 6 v^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qLi9ym, ]  
*/ 8 QF?W{NK  
public void sort(int[] data) { \.P}`Bpa  
int temp; 1lyOp   
for(int i=0;i for(int j=data.length-1;j>i;j--){ I<./(X[H:#  
if(data[j] SortUtil.swap(data,j,j-1); /}`/i(k  
} w"agn}CK  
} ^:DhHqvK  
} Pmlgh&Z  
} gvqd 1?0w  
v\(m"|4(i  
} |$w={N^4  
FJ~_0E#L  
选择排序: :$i:8lz  
U?fN3  
package org.rut.util.algorithm.support; 5A$az03y$\  
nX\]i~  
import org.rut.util.algorithm.SortUtil; @gSFvb bc  
}u_EXP8M  
/** Pgw%SMEp  
* @author treeroot LQ\ ELJj  
* @since 2006-2-2 VnSj:LUD  
* @version 1.0 4Sstg57x~  
*/ (GEi<\16[  
public class SelectionSort implements SortUtil.Sort { (1AA;)`Kp  
Di<J6xu  
/* `JWYPsWk  
* (non-Javadoc) >Ug?O~-  
* w<~<(5mM5;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }SMJD  
*/ MIlCUk  
public void sort(int[] data) { XDdcq]*|  
int temp; &lPBqw  
for (int i = 0; i < data.length; i++) { @=NVOJy}c  
int lowIndex = i; e*2&s5 #RT  
for (int j = data.length - 1; j > i; j--) { `)=A !x y  
if (data[j] < data[lowIndex]) { f:[d]J|  
lowIndex = j; w}W@M,.^  
} NnLhJPh  
} .aismc`=  
SortUtil.swap(data,i,lowIndex); y|;8:b32  
} ~26s7S}  
} %rDmW?T  
AIl$qPKj&  
} oIvnF:c  
vbA7I<;  
Shell排序: A2|o=mOH  
\gp,Txueb  
package org.rut.util.algorithm.support; AO}i@YJth  
o%+A<Ri  
import org.rut.util.algorithm.SortUtil; A_jB|<bjTP  
sO6gIPU^  
/** 4/2RfDp  
* @author treeroot 5&HT$"H :  
* @since 2006-2-2 d@6:|auO  
* @version 1.0 a(ux?V)E.  
*/ Dl zmAN  
public class ShellSort implements SortUtil.Sort{ Sz|Y$,  
LPapD@Z  
/* (non-Javadoc) t}XB|h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !q-:rW? c  
*/ 762o~vY6$  
public void sort(int[] data) { -?aw^du  
for(int i=data.length/2;i>2;i/=2){ yF/< :  
for(int j=0;j insertSort(data,j,i); -.b Io  
} HTUYvU*-  
} p&OJa$N$[  
insertSort(data,0,1); V+=*2?1  
} =tS[&6/  
TDl!qp @  
/** xMSNrOc  
* @param data yL ;o{ G  
* @param j hINnb7 o  
* @param i Q.9Ph ~  
*/ ]@/^_f>D  
private void insertSort(int[] data, int start, int inc) { ;WvYzd9  
int temp; x0u?*5-t  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); of+phMev  
} 5mna7 BCEb  
} m0I #  
} KkdG.c'  
uP%axys  
} hsHVX[<5`  
D%jD 8p  
快速排序: hi {2h04  
foFg((tS  
package org.rut.util.algorithm.support; \3Q:K |  
"#-Nqq  
import org.rut.util.algorithm.SortUtil; mmrW`~-  
lPRdwg-  
/** h;EwkbDQg>  
* @author treeroot .#=j <&  
* @since 2006-2-2 ;.nP%jD  
* @version 1.0 FVsu8z u  
*/ POqRHuFq  
public class QuickSort implements SortUtil.Sort{ u=@h`5-fp  
~T>jBYI0  
/* (non-Javadoc) (#j2P0B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Gut J_2f^9  
*/ O1x0[sy  
public void sort(int[] data) { aCU7w5  
quickSort(data,0,data.length-1); ']d!?>C@o  
} T6h;Y  
private void quickSort(int[] data,int i,int j){ 4Vu'r?  
int pivotIndex=(i+j)/2; 3 x"@**(Q  
file://swap fa!3/X+  
SortUtil.swap(data,pivotIndex,j); f?=r3/AO  
1z})mfsh  
int k=partition(data,i-1,j,data[j]); CB*`  
SortUtil.swap(data,k,j); O+G~Qp0b>  
if((k-i)>1) quickSort(data,i,k-1); WFU?o[k-O  
if((j-k)>1) quickSort(data,k+1,j); 93Mdp9v+i  
^%n124  
} n_""M:XH  
/** {BFT  
* @param data F5N>Uqr*oN  
* @param i [{S;%Jj*X/  
* @param j 2Vz'n@g=  
* @return Sni&?tcY  
*/ :DZLjC  
private int partition(int[] data, int l, int r,int pivot) { ,}9f(`  
do{ G 2%  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); [;(]Jy  
SortUtil.swap(data,l,r); OW+e_im}  
} v}7@CP]nV  
while(l SortUtil.swap(data,l,r); [c&2i`C  
return l; x @1px&^  
} TK; \_yN  
RGT_}ni  
} //\ds71h  
y#]}5gJ  
改进后的快速排序: 98ca[.ui  
6#E]zmXO2  
package org.rut.util.algorithm.support; 0s 860Kn  
0zeUP {MQ  
import org.rut.util.algorithm.SortUtil; !( kX~S  
2}^+ ]5  
/** 9 '2=  
* @author treeroot GN\8![J  
* @since 2006-2-2 wl7 MfyU  
* @version 1.0 !2GHJHxv]c  
*/ 7<h.KZPc  
public class ImprovedQuickSort implements SortUtil.Sort { ixOEdQ  
Y3-]+y%l  
private static int MAX_STACK_SIZE=4096; ' 2>l  
private static int THRESHOLD=10; 84iJ[Fq{  
/* (non-Javadoc) S 3R|8?|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0Vf)Rw1%I  
*/ >j&1?M2C  
public void sort(int[] data) { R<Z^L~)  
int[] stack=new int[MAX_STACK_SIZE]; Q/9a,85  
^g9}f  
int top=-1; E9^(0\Z I  
int pivot; ^4+r*YvcM  
int pivotIndex,l,r; ;LHDh_.pX  
pU M&"V  
stack[++top]=0; VVs{l\$=ZV  
stack[++top]=data.length-1; `Jn,IDq  
%/P=m-K  
while(top>0){ 'b8R#R\P  
int j=stack[top--]; @(Z( /P;:  
int i=stack[top--]; M[A-1]'  
m])Lw@#9W  
pivotIndex=(i+j)/2; jyNb(Z  
pivot=data[pivotIndex]; 2*+ 3Rr J  
JYPxd~T/-  
SortUtil.swap(data,pivotIndex,j); 2bWUa~%B  
-r!42`S  
file://partition + Qt[1Xq  
l=i-1; ]x1p!TSU  
r=j; ,,S9$@R  
do{ K6E}";;  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); <#>Oy&E  
SortUtil.swap(data,l,r); "cwR^DoD&  
} ?p(kh^z  
while(l SortUtil.swap(data,l,r); =KV@&Y^x4  
SortUtil.swap(data,l,j); ICk(z~D~  
!~kEtC  
if((l-i)>THRESHOLD){ ?RDO] I>  
stack[++top]=i; _Aa[?2 O  
stack[++top]=l-1; mn. `qfMh  
} 3a'q`.L  
if((j-l)>THRESHOLD){ a~WqUL  
stack[++top]=l+1;  for {  
stack[++top]=j; sN-oEqS  
} 5Yl6?  
QW2?n`Fa9-  
} |Td_S|:d  
file://new InsertSort().sort(data); n<E.Em1  
insertSort(data); pL~=Z?(B  
} ^b=XV&{q  
/** sD2 ^_w6j  
* @param data V7P6zAJy  
*/ oB4#J*   
private void insertSort(int[] data) { .vK.XFZ8R  
int temp; qh$X^%g  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1);  *. 8JP  
} ?!H)zz6y  
} 9/G!0uE  
} @YCv  
u)7*Rj^  
} )U'yUUi  
IdF$Ml#[h  
归并排序: !Vb,zQ  
C,.-Q"juH  
package org.rut.util.algorithm.support; D{R/#vM jk  
@m?{80;uQ  
import org.rut.util.algorithm.SortUtil; >{QdMn  
' X}7]y  
/** @LcT-3u  
* @author treeroot i *B:El1  
* @since 2006-2-2 WKxm9y V  
* @version 1.0 ` VwN!B:  
*/ q@%h^9.  
public class MergeSort implements SortUtil.Sort{ QhCY}Q?X  
~6kJ~R4  
/* (non-Javadoc) M\ dO({o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q&gPa]z]}  
*/ ) o xIzF  
public void sort(int[] data) { QNb>rLj52  
int[] temp=new int[data.length];  |# V(p^  
mergeSort(data,temp,0,data.length-1); ge$LIsE8  
} -?5$ PH  
Q<yAT(w  
private void mergeSort(int[] data,int[] temp,int l,int r){ *2=W5LaK.  
int mid=(l+r)/2; ywEDy|Wn$~  
if(l==r) return ; QF.3c6O@  
mergeSort(data,temp,l,mid); _W|R;Cz]  
mergeSort(data,temp,mid+1,r); gH'_ymT= 3  
for(int i=l;i<=r;i++){ {V0>iN:~S  
temp=data; 6|^0_6_  
} %9X{{_  
int i1=l; s@s/ '^`  
int i2=mid+1; \6:>{0\  
for(int cur=l;cur<=r;cur++){ 2h<U  
if(i1==mid+1) y@`~9$  
data[cur]=temp[i2++]; /VO^5Dnb  
else if(i2>r) wLUF v(&C  
data[cur]=temp[i1++]; U{}!y3[wK  
else if(temp[i1] data[cur]=temp[i1++]; tOM(U-7Z&  
else Px#$uU  
data[cur]=temp[i2++]; (f~gEKcB2u  
} |!Fk2Je,  
} &n|*uLn  
-;>#3 O-  
} [f/.!@sj  
um[!|g/  
改进后的归并排序: rrcwtLNbu  
MRs,l'  
package org.rut.util.algorithm.support; sPy2/7Wqd  
_88QgThb  
import org.rut.util.algorithm.SortUtil; Y\p $SN  
8R}K?+]  
/** @!<d0_dnC  
* @author treeroot V&[eSVY?  
* @since 2006-2-2 f05=Mc&)  
* @version 1.0 x'qWM/  
*/ z]$>+MH_  
public class ImprovedMergeSort implements SortUtil.Sort { ?'w sIH]m  
Vho0e V=  
private static final int THRESHOLD = 10; @KA1"Wb_  
sa9fK Z'q  
/* ~{M@?8wi  
* (non-Javadoc) j#VIHCzlr  
* wbi3lH:;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U^rm: *f  
*/ e\9g->DUs  
public void sort(int[] data) { _!!}'fMC  
int[] temp=new int[data.length]; VNj@5s  
mergeSort(data,temp,0,data.length-1); ]'k[u  
} ?'sXgo.}  
!5UfWk\G  
private void mergeSort(int[] data, int[] temp, int l, int r) { .45^=2NGmQ  
int i, j, k; +j[`,5oS  
int mid = (l + r) / 2; :Q-oV8t{  
if (l == r) d0 -~| `5  
return; @]=f?+y[ 2  
if ((mid - l) >= THRESHOLD) HE;V zR  
mergeSort(data, temp, l, mid); ZXt?[Ll  
else :}9j^}"c3  
insertSort(data, l, mid - l + 1); /K|:9Q$K6  
if ((r - mid) > THRESHOLD) FZXyfZw!|  
mergeSort(data, temp, mid + 1, r); OJ/SYZ.r  
else {155b0  
insertSort(data, mid + 1, r - mid); .GCR!V  
O@jqdJu  
for (i = l; i <= mid; i++) { S;=_;&68?  
temp = data; 1,`H:%z%  
} \A<v=VM|  
for (j = 1; j <= r - mid; j++) { :wipE]~4t  
temp[r - j + 1] = data[j + mid]; V"#Jk!k9k  
} Au5rR>W  
int a = temp[l]; 6peyh_  
int b = temp[r]; 2\0Oji\6  
for (i = l, j = r, k = l; k <= r; k++) { os$nL'sq  
if (a < b) { O?ktWHUx  
data[k] = temp[i++]; =& -[TPW  
a = temp; OOB^gf}$'  
} else { zZ=$O-&%  
data[k] = temp[j--]; YH\j@ ^n  
b = temp[j]; `FJ|W6%  
} {Q~7M$  
} Hm9<fQuM  
} A-wRah.M  
[w+Q^\%bN  
/** hNbIpi=  
* @param data >]&X ^V%Q#  
* @param l V=}1[^  
* @param i ~R.dPUr  
*/ n"G`b  
private void insertSort(int[] data, int start, int len) { maC>LBa2/  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); U<Jt50O  
} Zw$ OKU  
} \[#t<dD  
} G{RTH_p  
} Mw^ *yW  
M35Ax],:^  
堆排序: Bo r7]#  
y3IWfiz>/d  
package org.rut.util.algorithm.support; ssl&5AS  
8h.V4/?  
import org.rut.util.algorithm.SortUtil; ^%#grX#  
'Kz9ygZy  
/** {'R)4hL  
* @author treeroot Y=2Un).&  
* @since 2006-2-2 JsQ6l%9  
* @version 1.0 kX2d7yQZz  
*/ l,d, T  
public class HeapSort implements SortUtil.Sort{ 6RK\}@^=K  
5~r2sCDPk  
/* (non-Javadoc) >I<PO.c!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G7-!`-Nk  
*/ - k`.j  
public void sort(int[] data) { "C74  
MaxHeap h=new MaxHeap(); =|SdVv   
h.init(data); 4# )6.f~  
for(int i=0;i h.remove(); &ao(!/im  
System.arraycopy(h.queue,1,data,0,data.length); @Zm J z  
} `ZGcgO<c\  
4tJa-7  
private static class MaxHeap{ 5=Lq=,K$  
8&E}n(XE  
void init(int[] data){ C6QbBo  
this.queue=new int[data.length+1]; _x %1F  
for(int i=0;i queue[++size]=data; *Km7U-BG  
fixUp(size); w>979g  
} 8;n_TMb  
} 6E^~n  
 `w<J25  
private int size=0; QUOKThY?  
sN/+   
private int[] queue; Gi7RMql6Q  
`# ^0cW  
public int get() { QxpKX_@Q5  
return queue[1]; YYUe)j{T  
} gx;O6S{  
)^/0cQcJ  
public void remove() { fgCT!s7z  
SortUtil.swap(queue,1,size--); `\b+[Nes  
fixDown(1); *jCW.ZLY  
} J(iV0LAZb  
file://fixdown "2hh-L7ql  
private void fixDown(int k) { u \g ,.C0  
int j; LE;g 0s  
while ((j = k << 1) <= size) { 6 hiC?2b{x  
if (j < size %26amp;%26amp; queue[j] j++; h$fe -G#  
if (queue[k]>queue[j]) file://不用交换 u%2KwRQ  
break; BHr|.9g]%%  
SortUtil.swap(queue,j,k); $YM_G=k  
k = j; TlRk*/PlJ  
} Kf.T\V4%  
} <qeCso  
private void fixUp(int k) { {9'M0=  
while (k > 1) { V#^yX%  
int j = k >> 1; 4/*q0M{}B  
if (queue[j]>queue[k]) _T*AC.  
break; LP<<'(l`  
SortUtil.swap(queue,j,k); |t6~%6^8  
k = j; 3,6Ox45  
} fN[8N$1-  
} xPC"c*  
p538r[f<  
} T V:<TR  
`X8@/wf#  
} fRHKQ(a#  
wE Qi0!  
SortUtil: FPv" N'/  
l(:kfR~AC  
package org.rut.util.algorithm; 2\@Z5m3B  
&/WAZs$2n  
import org.rut.util.algorithm.support.BubbleSort; 6|=j+rScv  
import org.rut.util.algorithm.support.HeapSort; ];FtS>\x  
import org.rut.util.algorithm.support.ImprovedMergeSort; %ROwr[Dj=  
import org.rut.util.algorithm.support.ImprovedQuickSort; [Z<Z;=t  
import org.rut.util.algorithm.support.InsertSort; |NMO__l@  
import org.rut.util.algorithm.support.MergeSort; [1( FgyE  
import org.rut.util.algorithm.support.QuickSort; dM]#WBOP y  
import org.rut.util.algorithm.support.SelectionSort; o`?zF+M0  
import org.rut.util.algorithm.support.ShellSort; OJ3UE(,I=  
sb.J bE8  
/** Eipp ~GD  
* @author treeroot vsMmCd)7U  
* @since 2006-2-2  (^: p  
* @version 1.0 2@Lb foA  
*/  y4jU{,  
public class SortUtil { S`= WF^  
public final static int INSERT = 1; -Kxc$}  
public final static int BUBBLE = 2; V|FrN*m  
public final static int SELECTION = 3; )K0i@hM(n  
public final static int SHELL = 4; $3;Upgv  
public final static int QUICK = 5; 8<dOMp;}r  
public final static int IMPROVED_QUICK = 6; f_\_9o"l  
public final static int MERGE = 7; GP,<`l&  
public final static int IMPROVED_MERGE = 8; I1=(. *B}  
public final static int HEAP = 9; ;=~Xr"(/z  
k1}hIAk3u  
public static void sort(int[] data) { S!Jh2tsg`-  
sort(data, IMPROVED_QUICK); #R5U   
} ,=PKd&  
private static String[] name={ 6"QEJ  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" j1U 5~%^  
}; PCE4W^ns  
OAe#Wf!c  
private static Sort[] impl=new Sort[]{ tP(h9|[N  
new InsertSort(), bcz-$?]  
new BubbleSort(), l-O$m  
new SelectionSort(), l]!B#{  
new ShellSort(), pv# 2]v  
new QuickSort(), xeA#u J  
new ImprovedQuickSort(), bB 6[Xj{  
new MergeSort(), C/tr$.2H=  
new ImprovedMergeSort(), WUoOGbA `  
new HeapSort() &M[f&_"8Q  
}; WES#ZYtT  
:qj<p3w~}  
public static String toString(int algorithm){ q,l)I+  
return name[algorithm-1]; Uems\I0  
} sqO< J$tz  
7"2b H  
public static void sort(int[] data, int algorithm) { ?M}S| dsmE  
impl[algorithm-1].sort(data); l-)B ivoi  
} Q*ju sm  
_8fA?q=  
public static interface Sort { JK)qZ=  
public void sort(int[] data); b{cU<;G)y.  
} 0b-?q&*_  
p]&j;H.  
public static void swap(int[] data, int i, int j) { ;hDa@3|]34  
int temp = data; <+U|dX  
data = data[j]; _D;@v?n6!O  
data[j] = temp; *@S@x{{s  
} ^v ni&sJ  
} }DjYGMrTB  
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