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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。 1\g r ;b  
插入排序: hS&.-5v  
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package org.rut.util.algorithm.support; 2rb@Md]dx  
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import org.rut.util.algorithm.SortUtil; yet ~  
/** yD@1H(yM  
* @author treeroot lbC,*U^  
* @since 2006-2-2 Vlge*4q  
* @version 1.0 Z*=$n_ G  
*/ l(\F2_,2W  
public class InsertSort implements SortUtil.Sort{ ?-tNRIPW@p  
D  ,[yx='  
/* (non-Javadoc) +=sw&DH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [X*u`J  
*/ bD-OEB  
public void sort(int[] data) { B>@l(e)b  
int temp; k$>5v +r0  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); #WS>Z3AY  
} `Jh<8~1  
} 8s %YudW  
} >*Ej2ex  
WpRM|"CF  
} ^F&j;8U  
e0j4t-lL  
冒泡排序: whm| "}x)u  
Xg;;< /Z  
package org.rut.util.algorithm.support; mA@!t>=oMq  
kI2+&  
import org.rut.util.algorithm.SortUtil; ae](=OQ  
/Z[HU{4  
/** c e; zn\  
* @author treeroot lQy-&d|=#^  
* @since 2006-2-2 9'@G7*Yn  
* @version 1.0 G&YcXyH  
*/ +r&:c[  
public class BubbleSort implements SortUtil.Sort{ /y6I I$AvM  
f .$*9Fkw  
/* (non-Javadoc) JoZS p"R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;lfv.-u:<  
*/ :Gew8G  
public void sort(int[] data) { #%w)w R3  
int temp; >8b%*f8R  
for(int i=0;i for(int j=data.length-1;j>i;j--){  ) TRUx  
if(data[j] SortUtil.swap(data,j,j-1); O%haaL\  
} &gUa^5'#  
} mkrVeBp  
} 7 p1B"%  
} z7+>G/o  
4YR{ *  
} Uv652DC  
_dmG#_1  
选择排序: 96P&+  
2+Oz$9`.  
package org.rut.util.algorithm.support; 9hh~u -8L  
i0zrXaKV  
import org.rut.util.algorithm.SortUtil; tU *`X(;  
b=U3&CV9  
/** p#_ 5w  
* @author treeroot zx*D)i5-  
* @since 2006-2-2 y,bD i9*|  
* @version 1.0 vVrM[0*c  
*/ )lz~Rt;1i  
public class SelectionSort implements SortUtil.Sort { o8v,17 8  
|~PaCw8-ge  
/* dCo3VF"u  
* (non-Javadoc) g/i%XTX>  
* E+LQyvF[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cOZBl;}  
*/ +S`cUn7  
public void sort(int[] data) { !IA\c(c^  
int temp; .!Kqcz% A  
for (int i = 0; i < data.length; i++) { \CV HtV  
int lowIndex = i; Xo&\~b#-  
for (int j = data.length - 1; j > i; j--) { "a3?m)  
if (data[j] < data[lowIndex]) { H8=:LF  
lowIndex = j; !l Egta[Ql  
} F ^aD#  
} Tku6X/LF  
SortUtil.swap(data,i,lowIndex); g"(@+\XZH"  
} =\oL'>q  
} #dD0vYT&od  
%QEyvl4  
} L]u^$=rI  
P}qpy\/(4  
Shell排序: _:WNk(  
 ; (A-  
package org.rut.util.algorithm.support; scYqU7$%T  
6:6A" A  
import org.rut.util.algorithm.SortUtil; YDj5+'y  
Jb^{o+s53  
/** FSAX , Y  
* @author treeroot C"%B >e  
* @since 2006-2-2 (|rf>=B+H  
* @version 1.0 /oLY\>pD  
*/ [HUK 9hG  
public class ShellSort implements SortUtil.Sort{ %u_dxpx  
kytHOn#  
/* (non-Javadoc) C'R6mz%Q?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cza_LO(  
*/ 2eA.04F  
public void sort(int[] data) { 3D1y^I  
for(int i=data.length/2;i>2;i/=2){ ts}OE  
for(int j=0;j insertSort(data,j,i); GZKYRPg  
} 3vjOfr`  
} xUCq%r_  
insertSort(data,0,1); DdU w~n,  
} :Fu7T1  
{$i>\)  
/** /&_q"y9  
* @param data BG= J8  
* @param j 9I;~P &  
* @param i wf &Jd:)4t  
*/ h/5S2EB0!O  
private void insertSort(int[] data, int start, int inc) { +6 =lN[b  
int temp; mfS}+_ C  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); KfYU.Q  
} CV_M |  
} he:z9EG}  
} W$()W)   
`wQs$!a  
} }f14# y;  
s=F[.X9lp  
快速排序: G6}&k[d5%  
DwZRx@  
package org.rut.util.algorithm.support; 4>LaA7)v  
q=D8 Nz  
import org.rut.util.algorithm.SortUtil; &;)B qqXc  
K~I?i/P=z  
/** dr+(C[=  
* @author treeroot `j9\]50Z>  
* @since 2006-2-2 Xt$P!~Lu  
* @version 1.0 rpDBKo  
*/ E2YVl%.  
public class QuickSort implements SortUtil.Sort{ Y6Cm PxOQ  
gx',K1T  
/* (non-Javadoc) TI/RJF b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &v t)7[  
*/ o3GkTn O  
public void sort(int[] data) { H{,1-&>|  
quickSort(data,0,data.length-1); "DfjUk  
} (V\N1T,f  
private void quickSort(int[] data,int i,int j){ 5u;//Cm  
int pivotIndex=(i+j)/2; ,(zV~-:9  
file://swap HLG5SS7  
SortUtil.swap(data,pivotIndex,j); \w>Rmf'|  
1K<}  
int k=partition(data,i-1,j,data[j]); wy#>Aq  
SortUtil.swap(data,k,j); &Tj7qlP\  
if((k-i)>1) quickSort(data,i,k-1); FQ1B%u|  
if((j-k)>1) quickSort(data,k+1,j); s }OL)rW=}  
WZPj?ou`G  
} cs.t#C  
/** xW*Lceb  
* @param data g,!.`[e'ex  
* @param i PREGQ0  
* @param j dE_"|,:  
* @return )h&@}#A09  
*/ (d D7"zQ  
private int partition(int[] data, int l, int r,int pivot) { wWfj#IB;R  
do{ vmrs(k "d#  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); {*TB }Xsr,  
SortUtil.swap(data,l,r); -m=A1~|7  
} yiI oqvP  
while(l SortUtil.swap(data,l,r); 9d-'%Q>+  
return l; B["+7\c<~  
} /|i*'6*  
fCF.P"{W"  
} X&LJ"ahK  
W;2J~V!c  
改进后的快速排序: -3v\ c~  
5N%d Les  
package org.rut.util.algorithm.support; K: $mEB[c<  
#jG?{j3;?  
import org.rut.util.algorithm.SortUtil; ?kQY ^pU  
v @0G^z|  
/** gh\u@#$8  
* @author treeroot o:W*#dt  
* @since 2006-2-2 Qg~w 3~  
* @version 1.0 s(5hFuyg  
*/ ;CF:cH*  
public class ImprovedQuickSort implements SortUtil.Sort { *pSnEWwE  
g3&nxZ  
private static int MAX_STACK_SIZE=4096; CJ%'VijhD  
private static int THRESHOLD=10; K8MET&  
/* (non-Javadoc) o5DT1>h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jOrfI-&.G  
*/  Fpn*]x  
public void sort(int[] data) { h]t v+\0  
int[] stack=new int[MAX_STACK_SIZE]; %<a3[TQd`\  
B ;E"VS0  
int top=-1; 9X=<uS  
int pivot; `y^\c#k  
int pivotIndex,l,r; amC)t8L?  
Ao}<a1f  
stack[++top]=0; dVj2x-R)  
stack[++top]=data.length-1; :i?6#_2IC  
h8 N|m0W  
while(top>0){ 5R~M@   
int j=stack[top--]; 5$'[R ;r  
int i=stack[top--]; 1G5AL2  
G~(\N?2  
pivotIndex=(i+j)/2; t,JX6ni  
pivot=data[pivotIndex]; R@z`  
2p\xgAW?  
SortUtil.swap(data,pivotIndex,j); wn!=G~nB  
2&n6:"u|  
file://partition YX-j|m|  
l=i-1; X5VNj|IE  
r=j; +~iiy;i(  
do{ %sOY:>  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); RH<2f5-sC!  
SortUtil.swap(data,l,r); M.}J SDt  
} `vAcCahM  
while(l SortUtil.swap(data,l,r); rDbtT*vN  
SortUtil.swap(data,l,j); JG'%HJ"D  
i]? Eq?k  
if((l-i)>THRESHOLD){ d]O:VghY\  
stack[++top]=i; v+in:\Dv  
stack[++top]=l-1; WA43}CyAe  
} 7:pc%Ksq  
if((j-l)>THRESHOLD){ (1^;l;7H  
stack[++top]=l+1; 6Yodx$  
stack[++top]=j; ud5}jyJ  
} 3lZl  
SF+L-R<e  
} nCWoco.xy  
file://new InsertSort().sort(data); gFHBIN;u  
insertSort(data); ='b)6R  
} z{ V;bi;  
/** v"ORn5  
* @param data T5zS3O  
*/ K=JDl-#!  
private void insertSort(int[] data) { %E&oe $[B  
int temp; v/rBjUc+X  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); dt "/4wCO  
} lqmQQ*Z  
} 2{~`q  
} $ MH;v_'a  
r[}nrH&8  
} /kK*%TP  
/tj]^QspS  
归并排序: \}=T4w-e  
W@r<4?Oat  
package org.rut.util.algorithm.support; dX)a D $m  
|rk.t g9  
import org.rut.util.algorithm.SortUtil; 06%-tAq:  
\UZGXk  
/** RVwS<g)~1  
* @author treeroot EMO {u  
* @since 2006-2-2 N6-7RoA+  
* @version 1.0 ?<3 d Fb  
*/ y@I 9>}"y  
public class MergeSort implements SortUtil.Sort{ "Ux(nt  
i@?|vu  
/* (non-Javadoc) 6}I X{nQI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EniV-Uj\D  
*/ H i8V=+  
public void sort(int[] data) { sGhw23  
int[] temp=new int[data.length]; !nkIXgWz  
mergeSort(data,temp,0,data.length-1); J(d+EjC  
} ^;a .;wR  
hDB(y4/  
private void mergeSort(int[] data,int[] temp,int l,int r){ 3WQa^'u  
int mid=(l+r)/2; Sxc)~y  
if(l==r) return ; %\48hSe  
mergeSort(data,temp,l,mid); Fy<:iv0>t  
mergeSort(data,temp,mid+1,r); 8\P,2RSnt  
for(int i=l;i<=r;i++){ wMR,r@}  
temp=data; \h#aPG<yo  
} W7uX  
int i1=l; ddKP3}  
int i2=mid+1; BT8)t.+pv  
for(int cur=l;cur<=r;cur++){ :s_.K'4?a  
if(i1==mid+1) +&VY6(Zj+*  
data[cur]=temp[i2++]; m0ra  
else if(i2>r) H%Vf$1/TF  
data[cur]=temp[i1++]; vA_,TS#Bo  
else if(temp[i1] data[cur]=temp[i1++]; J?m/u6  
else KMy"DVqE  
data[cur]=temp[i2++]; ynM~&]fk#k  
} ohKoX$|p~  
} JYw?  
_"Ym]y28li  
} DKfpap}8u  
IKP_%R8.  
改进后的归并排序: uoE+:,P  
)r{Wj*u  
package org.rut.util.algorithm.support; B7'#8heDh  
Sdmz (R  
import org.rut.util.algorithm.SortUtil; PjBAf'  
, v} )  
/** t adeG  
* @author treeroot V~KWy@7  
* @since 2006-2-2 Pv2uZH(  
* @version 1.0 RN)XIf$@_  
*/ 9:@Xz5  
public class ImprovedMergeSort implements SortUtil.Sort { {f`Y\_r$@  
]j:k!=Ss?  
private static final int THRESHOLD = 10; MF'Z?M  
yOEy3d=*  
/* Za!KM  
* (non-Javadoc) `mteU"{bx  
* 3>7{Q_5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) auAz>6L  
*/ MnFrQC  
public void sort(int[] data) { hR|xUp  
int[] temp=new int[data.length]; \\:%++}J  
mergeSort(data,temp,0,data.length-1); 5`fUR/|[  
} c]x-mj =  
"1Hn?4nz5  
private void mergeSort(int[] data, int[] temp, int l, int r) { 9HFEp-"  
int i, j, k; e< @$(w  
int mid = (l + r) / 2; KPz0;2}  
if (l == r) 98u@X:3  
return; e.MyJ:eL  
if ((mid - l) >= THRESHOLD) eC<RM Q4  
mergeSort(data, temp, l, mid); sjLMM_'  
else [6RODp3')  
insertSort(data, l, mid - l + 1); Rl cL(HM  
if ((r - mid) > THRESHOLD) +%9Re5R  
mergeSort(data, temp, mid + 1, r); b`+yNf  
else z{ eZsh b  
insertSort(data, mid + 1, r - mid); Bq)dqLwk  
4Us,DS_/  
for (i = l; i <= mid; i++) { In?+  
temp = data; v=G*K11@  
} wX2U   
for (j = 1; j <= r - mid; j++) { &AxtSIpucP  
temp[r - j + 1] = data[j + mid]; >2>/ q?  
} HN`qMGW^  
int a = temp[l]; Conik`  
int b = temp[r]; =\2gnk~  
for (i = l, j = r, k = l; k <= r; k++) { ^ wZx=kas  
if (a < b) { TC<Rg?&yb  
data[k] = temp[i++]; 6c^?DLy9B  
a = temp; e)?}2  
} else { +$L}B-F  
data[k] = temp[j--]; $t& o(]m  
b = temp[j]; ;\A_-a_(#  
} 8%;Wyqdf]  
} 30WOH 'n  
} 9teP4H}m  
0/] h"5H3  
/** } x r0m+/  
* @param data V Zbn@1  
* @param l /"`hz6rIv  
* @param i u*%mUh  
*/ hx@@[sKF7  
private void insertSort(int[] data, int start, int len) { "__)RHH:8  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 1qAE)8ie  
} <ivG(a*=]  
} LyvR].p=5*  
} Xe&9| M  
} %`s#p` Ol1  
R%n*wGi_6b  
堆排序: HFjSM~  
8*b{8%<K  
package org.rut.util.algorithm.support; T&/ n.-@nk  
cz/ E  
import org.rut.util.algorithm.SortUtil; Q{S{|.w-  
e}{#VB<  
/** *^; MWI  
* @author treeroot M {'(+a[  
* @since 2006-2-2 ?;UR9f|!  
* @version 1.0 Q hRz57'  
*/ gzhIOeY  
public class HeapSort implements SortUtil.Sort{ 93.\.&L\  
?QKD YH(  
/* (non-Javadoc) w6> P[oW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1l)j(,Zd*  
*/ 7&P70DO  
public void sort(int[] data) { 7wWx8  
MaxHeap h=new MaxHeap(); 5V(#nz  
h.init(data); dKEy6C"@  
for(int i=0;i h.remove(); w2b(,w  
System.arraycopy(h.queue,1,data,0,data.length); (5Q<xJ  
} RgH 6l2  
v9@_ DlV\  
private static class MaxHeap{ 2Jiy`(P  
r<(UN@T}  
void init(int[] data){ (p#c p  
this.queue=new int[data.length+1]; &Hf%Va[B  
for(int i=0;i queue[++size]=data; $FT6c@&y  
fixUp(size); _\IA[-C+O  
} sd+_NtH  
} =pmG.>Si  
4s%zvRu  
private int size=0; vCt][WX(  
7]?y _%kT  
private int[] queue; C[Q4OAFG  
U:7w8$_  
public int get() { F> Ika=z,  
return queue[1]; 8VU(+%X  
} WQCnkP  
&m36h`tM  
public void remove() { T; [T`  
SortUtil.swap(queue,1,size--); d, i4WKp   
fixDown(1); F ]D^e{y  
} 73!NoDxb  
file://fixdown CTg79 ITYk  
private void fixDown(int k) { l{3zlXk3z  
int j; n?6^j8i  
while ((j = k << 1) <= size) { _?felxG[  
if (j < size %26amp;%26amp; queue[j] j++; %LHt{:9.  
if (queue[k]>queue[j]) file://不用交换 njJTEUd">  
break; gGCr~.5  
SortUtil.swap(queue,j,k); P5G0fq7  
k = j; DsxNg  
} |*ZM{$  
} v0&DD&mp  
private void fixUp(int k) { :0%[u(  
while (k > 1) { dj] O  
int j = k >> 1; ^Ar1V!PFk  
if (queue[j]>queue[k]) .i )K#82  
break; U3]/ NV*   
SortUtil.swap(queue,j,k); >_]Ov:5  
k = j; PmsZ=FY  
} /8:e| ]  
} +6+1N)L  
Kn1u1@&Xd  
} ZBU<L+#  
krlebPs[  
} elKp?YN  
OUN~7]OD%  
SortUtil: O['[_1n_u]  
oMM@{Jp  
package org.rut.util.algorithm; hqHk,#  
BUi,+NdIk  
import org.rut.util.algorithm.support.BubbleSort; Cv>~%<   
import org.rut.util.algorithm.support.HeapSort; h0 %M+g  
import org.rut.util.algorithm.support.ImprovedMergeSort; .8'uIA{_2  
import org.rut.util.algorithm.support.ImprovedQuickSort; 32j#kJW  
import org.rut.util.algorithm.support.InsertSort; 9ec#'i=  
import org.rut.util.algorithm.support.MergeSort; 753gcY#i  
import org.rut.util.algorithm.support.QuickSort; _a$5"  
import org.rut.util.algorithm.support.SelectionSort; pox;NdX7  
import org.rut.util.algorithm.support.ShellSort; Wo9=cYC)  
ia.+<, $`S  
/** YGyw^$.w  
* @author treeroot -`spu)  
* @since 2006-2-2 fK(:vwh  
* @version 1.0 j)Q}5M  
*/ * >NML]#0  
public class SortUtil { {=!BzNMj  
public final static int INSERT = 1; ^^uY)AL  
public final static int BUBBLE = 2; 6 P(jc  
public final static int SELECTION = 3; l%i*.b(  
public final static int SHELL = 4; SFP?ND+7  
public final static int QUICK = 5; J1M9) ,  
public final static int IMPROVED_QUICK = 6; 9}K K]m6u}  
public final static int MERGE = 7; 4},Y0QXw  
public final static int IMPROVED_MERGE = 8; eA(FWO  
public final static int HEAP = 9; )`|`PB  
/ a}N6KUi  
public static void sort(int[] data) { Zl!  
sort(data, IMPROVED_QUICK); #QOb[9(Tu(  
} kyYU 1gfh  
private static String[] name={ %[L/JJbP&Z  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" & R<K>i  
}; HDE5Mg "  
]d|M@v~c4  
private static Sort[] impl=new Sort[]{ 1!+0]_8K  
new InsertSort(), 3$_- 0>  
new BubbleSort(), #w^Ot*{!N  
new SelectionSort(), *r~6R  
new ShellSort(), "Rf|o 6!d  
new QuickSort(), -4J.YF>  
new ImprovedQuickSort(), a9 S&n5  
new MergeSort(), TEK#AR  
new ImprovedMergeSort(), //$^~} wt  
new HeapSort() w 17{2']  
}; "yU<X\n i  
 )iPU   
public static String toString(int algorithm){ U~zy;M T  
return name[algorithm-1]; %f&Bt,xEo  
} ^s=F<_{  
yRhD<*  
public static void sort(int[] data, int algorithm) { 5ry[Lgg  
impl[algorithm-1].sort(data); Z\1`(Pq7`  
} 0!axAvBV  
mxc^IRj  
public static interface Sort { Z0V6cikW6  
public void sort(int[] data); 54s90  
} 0(uba3z  
@'J~(#}  
public static void swap(int[] data, int i, int j) { gV5mERKs  
int temp = data; rb>2l3g*  
data = data[j]; 6k7x7z  
data[j] = temp; dleLX%P  
} v,3 }YDu  
} oO;< $wx2t  
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