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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。 37a1O>A  
插入排序: @_-,Q5  
WH1 " HO  
package org.rut.util.algorithm.support; GF% /q:9  
uK"FopUJ4i  
import org.rut.util.algorithm.SortUtil;  'F.P93  
/** sRT H_]c  
* @author treeroot `VO;\s$5j  
* @since 2006-2-2 n9={D  
* @version 1.0 q@[F|EF=  
*/ *9kg \#  
public class InsertSort implements SortUtil.Sort{ ZSe30Rl\  
X5 or5v  
/* (non-Javadoc) h`N2M,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xi "3NF%=  
*/ rnhLv$  
public void sort(int[] data) { 0LL0\ly]  
int temp; dEKu5GI  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ~B"HI+:\L  
} &DGz/o  
} }k%6X@  
} <Y?Z&rNb  
mR@d4(:J?  
} 2xO[ ?fR  
DH+kp$,}  
冒泡排序: zs I?X>4  
}Cw,m0KV/  
package org.rut.util.algorithm.support; f*Q9u>1p  
Wd)\r.pJ  
import org.rut.util.algorithm.SortUtil; $Uy+]9  
hZ e{Ri  
/** 5yoi;$~}_0  
* @author treeroot 'ZMh<M[  
* @since 2006-2-2 f7Nmvla[q  
* @version 1.0 Ul]7IUzsu  
*/ e8xq`:4Y  
public class BubbleSort implements SortUtil.Sort{ <%uEWb)  
B47I?~{  
/* (non-Javadoc) o(Z~J}l({  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cw 2!V@  
*/ 54>0Dv??H  
public void sort(int[] data) { r1%{\<   
int temp; bs)wxU`Q*  
for(int i=0;i for(int j=data.length-1;j>i;j--){ \l /}` w  
if(data[j] SortUtil.swap(data,j,j-1); H<i!C|AF  
} E:**gvfq  
} l5 H5!$3~  
} +)q ,4+K%}  
} 8Z\q)T  
LS<+V+o2%  
} k"DZ"JC  
W)Y`8&,  
选择排序: ANw1P{9*  
Q2m[XcnX  
package org.rut.util.algorithm.support; m6BUKX\m  
~210O5^  
import org.rut.util.algorithm.SortUtil; L$OZ]  
^\O*e)#*  
/** _^GBfM.  
* @author treeroot MjC<N[WO>N  
* @since 2006-2-2 |U{~t<BF#  
* @version 1.0 d>)=|  
*/ ZXYyG`3+  
public class SelectionSort implements SortUtil.Sort { %pjeA[-m#  
jH<Sf: Y(  
/* SEzjc ~@3  
* (non-Javadoc) j`.&4.7+  
* # f-hI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }a5TY("d9H  
*/ y<- ]'Yts  
public void sort(int[] data) { gtMR/P:S  
int temp; vkGF_aenk  
for (int i = 0; i < data.length; i++) { ms}o[Z@n  
int lowIndex = i; \X*y~)+K`  
for (int j = data.length - 1; j > i; j--) { mq4Zy3H   
if (data[j] < data[lowIndex]) { )yig=nn  
lowIndex = j; /FXvrH(  
} #*CMf.OCh  
} 1 PdG1'  
SortUtil.swap(data,i,lowIndex); +\_\53  
} *Ts$Hj[  
} "QXnE^  
\a;xJzc9  
} -avxH?;?7  
UwS7B~  
Shell排序: Iga +8k  
xgIb6<qwY  
package org.rut.util.algorithm.support; aIa<,  
'1 2*'Q+{+  
import org.rut.util.algorithm.SortUtil; =L#&`s@)_  
tP! %(+V  
/** 8493Sw  
* @author treeroot KQ]sUNH  
* @since 2006-2-2 ZXb{-b?[`  
* @version 1.0 M 1 m]1<  
*/ Xv!Gg6v6  
public class ShellSort implements SortUtil.Sort{ ^ fC2o%3^  
zKJQel5  
/* (non-Javadoc) \w1XOm [)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `x _(EZ  
*/ eJ45:]_%I@  
public void sort(int[] data) { N(4y}-w$  
for(int i=data.length/2;i>2;i/=2){ DQW)^j h  
for(int j=0;j insertSort(data,j,i); L{jx'[C  
} D )`(b  
} &\6},JN  
insertSort(data,0,1); T:{&e WH  
} =ZURh_{xV  
T_Tu>wQX  
/** !~?/D  
* @param data MCibYv c[  
* @param j P2jh[a%  
* @param i Rjq\$aY}%  
*/ Wu{_QuAB  
private void insertSort(int[] data, int start, int inc) { dI%jR&.e;  
int temp; ZPE-  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); kI(3Pf ].  
} /YZMP'v  
} +zche  
} %eofG]VM<  
1HNP@9ga  
} F!hjtIkPj  
#3_g8ni5X  
快速排序: 6:%lxG  
)ddJ\:  
package org.rut.util.algorithm.support; 4s:M}=]N  
yN`hW&K  
import org.rut.util.algorithm.SortUtil; B`R@%US  
9kWI2cLzQt  
/** %+Nng<_U\T  
* @author treeroot |k}L=oWE  
* @since 2006-2-2 Vv(buG  
* @version 1.0 FD E?O]^  
*/ .+XK>jl +  
public class QuickSort implements SortUtil.Sort{ G.L}VpopM  
Fl($0}ER  
/* (non-Javadoc) uZL,%pF3A  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K!9K^h  
*/ Ek `bPQ5  
public void sort(int[] data) {  .GJbrz  
quickSort(data,0,data.length-1); xva e^gr  
} -7w}+iS  
private void quickSort(int[] data,int i,int j){ bl>W i@GL  
int pivotIndex=(i+j)/2; fh)eL<I  
file://swap *V:U\G  
SortUtil.swap(data,pivotIndex,j); XZ.D<T"  
c.LRS$o/j  
int k=partition(data,i-1,j,data[j]); /dg?6XT/  
SortUtil.swap(data,k,j); | WJ]7C  
if((k-i)>1) quickSort(data,i,k-1); \PT!mbB?  
if((j-k)>1) quickSort(data,k+1,j); hY{4_ie=8  
YC 4c-M  
} FEu}zt@  
/** ?/MkH0[G=  
* @param data LvS5N)[  
* @param i Ws3z-U>j  
* @param j Ww8U{f  
* @return )?radg  
*/ jEQ_#KKYJ  
private int partition(int[] data, int l, int r,int pivot) { wxK71OH  
do{ W^^0Rh_  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); g,WTXRy  
SortUtil.swap(data,l,r); X1P1 $RdkR  
} 4.,|vtp  
while(l SortUtil.swap(data,l,r); l]&A5tz3  
return l; 3 $%#n*  
} ,2Ed^!`  
ZG H 7_K  
} rMJ@oc  
~.^:?yCA  
改进后的快速排序: J&h59dm-  
Xlug{ Uh  
package org.rut.util.algorithm.support; 'qiAmaX  
mz1m^p)~{  
import org.rut.util.algorithm.SortUtil; AaB1H7r-  
$H3C/|  
/** dkEbP*y Xg  
* @author treeroot DI;LhS*z  
* @since 2006-2-2 g&p(XuN  
* @version 1.0 <!G /&T  
*/ sdCG}..`  
public class ImprovedQuickSort implements SortUtil.Sort { V}<<?_  
fFbJE]jW  
private static int MAX_STACK_SIZE=4096; P]}:E+E<.I  
private static int THRESHOLD=10; 11QZ- ^  
/* (non-Javadoc) S9l po_!z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {}'Jr1  
*/ YY tVp_)  
public void sort(int[] data) { Y'P^]Q=}_#  
int[] stack=new int[MAX_STACK_SIZE]; k~<Ozx^AyY  
e^\(bp+83  
int top=-1; ]6v7iuvI  
int pivot; BR@gJ(2  
int pivotIndex,l,r; LC=M{\  
 K%%Ow  
stack[++top]=0; 3`SH-"{j%  
stack[++top]=data.length-1; %jj-\Gz!  
W^[QEmyn  
while(top>0){ !p\ @1?  
int j=stack[top--]; /J-.K*xKt  
int i=stack[top--]; &,p6lbP  
34)l3UI~  
pivotIndex=(i+j)/2; })@xWU6!  
pivot=data[pivotIndex]; C<:wSS^@1  
0# 1~'e  
SortUtil.swap(data,pivotIndex,j); P;y!Y/$C  
9fbo  
file://partition n@kJ1ee'  
l=i-1; h){#dU+&  
r=j; @/As|)  
do{ 4?(=?0/[  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); (K6vXq.;\\  
SortUtil.swap(data,l,r); A6_ER&9$>N  
} |I"&Z+m  
while(l SortUtil.swap(data,l,r); J Z@sk2  
SortUtil.swap(data,l,j); Su,<idS  
|,n(9Ix  
if((l-i)>THRESHOLD){ bSI*`Dc"!  
stack[++top]=i; G DBV  
stack[++top]=l-1; t`}=~/#`X  
} !7]^QdBLY  
if((j-l)>THRESHOLD){ ?t\GHQ$$?  
stack[++top]=l+1; 7w5l[a/  
stack[++top]=j; /P[u vO  
} +  rN#  
Xeis_  
} &u"mFweS  
file://new InsertSort().sort(data); $@{ d\@U  
insertSort(data); 90J WU$K  
} fRk'\jzT  
/** %T<c8w}dP  
* @param data 1M_6X7PH  
*/ [}Rs  
private void insertSort(int[] data) { .{;RJ:O  
int temp; >PdrLwKS  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); pkG8g5(w  
} BB1_EdoG  
} 2^5RQl/  
} C)qG<PW.!  
60|m3|0o  
} NV} fcZ  
GmUm?A@B  
归并排序: kp?_ir  
o"N\l{#s  
package org.rut.util.algorithm.support; Ek06=2i  
+m}D.u*cp  
import org.rut.util.algorithm.SortUtil; I)3LJK  
{RsdI=%  
/** rf^IJY[  
* @author treeroot 's"aPqF?  
* @since 2006-2-2 #cD$ DA  
* @version 1.0 ) cOBP}j+  
*/ ?g K|R  
public class MergeSort implements SortUtil.Sort{ :[_k .1-+  
f0g_Gn $  
/* (non-Javadoc) <[gN4x>'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8&x&Ou$("V  
*/ /^~)iTwH  
public void sort(int[] data) { - t 4F  
int[] temp=new int[data.length]; \dB z-H'@  
mergeSort(data,temp,0,data.length-1); ij_5=4aZ-  
} !YM:?%B  
~:0U.v_V  
private void mergeSort(int[] data,int[] temp,int l,int r){ h}m9L!+n8  
int mid=(l+r)/2; 0'5N[Bvp  
if(l==r) return ; ?v+el,  
mergeSort(data,temp,l,mid); GIkVU6Q}  
mergeSort(data,temp,mid+1,r); #cJ1Jj $  
for(int i=l;i<=r;i++){ ~-yq,x  
temp=data; z^KBV ^n  
} n? ^oQX}.\  
int i1=l; l~1l~Gx_&n  
int i2=mid+1; \H PB{ ;  
for(int cur=l;cur<=r;cur++){ sA"B/C|(g  
if(i1==mid+1) \<} e?Yx%  
data[cur]=temp[i2++]; gZz5P>^  
else if(i2>r) mX @xV*  
data[cur]=temp[i1++]; xf:|lQf  
else if(temp[i1] data[cur]=temp[i1++]; tOQnxKzu  
else /I`-  
data[cur]=temp[i2++]; k1D|Cpnp  
} 6SAYe%e  
} zP!j {y4w  
dHn,;Vv^6  
} PMj!T \B|  
$U^ Ms!'L  
改进后的归并排序: V1,4M_Z  
xiC.M6/  
package org.rut.util.algorithm.support; u3 4.   
){tT B  
import org.rut.util.algorithm.SortUtil; gHH[QLD=I  
IV`+B<3  
/** )\izL]=!t  
* @author treeroot eN  TKX  
* @since 2006-2-2 _^0UK|[  
* @version 1.0 y&F&Z3t  
*/ PC?XE8o  
public class ImprovedMergeSort implements SortUtil.Sort { DnB :~&Dw  
\VAS<?3  
private static final int THRESHOLD = 10; 2;SiH]HNS  
@7?L+.r$9  
/* nG| NRp  
* (non-Javadoc) |)ALJJ=+  
* 3qp\jh=FE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v?q)E%5j  
*/ p" Di;3!y!  
public void sort(int[] data) { .Jc<Gg  
int[] temp=new int[data.length]; )c0Dofhg  
mergeSort(data,temp,0,data.length-1); phcYQqR  
} {%Q+Pzl.  
<q4 <3A  
private void mergeSort(int[] data, int[] temp, int l, int r) { }K 2fwE  
int i, j, k; |s !7U  
int mid = (l + r) / 2; W_]onq 6  
if (l == r) [Al} GM  
return; Ch&2{ ng  
if ((mid - l) >= THRESHOLD) l4E0/ F  
mergeSort(data, temp, l, mid); k`0m|<$  
else Q,>]f@m  
insertSort(data, l, mid - l + 1); {@X)=.Zf  
if ((r - mid) > THRESHOLD) _s0;mvz'  
mergeSort(data, temp, mid + 1, r); b;G#MjQp'  
else 3gs7Xj%N  
insertSort(data, mid + 1, r - mid); Gl>*e|}  
j@jUuYuDgl  
for (i = l; i <= mid; i++) { 0 SDyE  
temp = data; @ql S #(  
} 8SO(pw9  
for (j = 1; j <= r - mid; j++) { FlLk.+!t  
temp[r - j + 1] = data[j + mid]; t\,X G  
} $_W kI^  
int a = temp[l]; =i Wn T  
int b = temp[r]; wvEdZGO8!  
for (i = l, j = r, k = l; k <= r; k++) { :T/I%|;f  
if (a < b) { _Qf310oONS  
data[k] = temp[i++]; Y$eO:67;  
a = temp; lMb&F[KJ7  
} else { -=4:qQEw  
data[k] = temp[j--]; f] kG%JEK  
b = temp[j]; \hqjk:o  
}  bR83N  
} *)qxrBc0  
} \ UiITP<  
rIAbr5CG  
/** ks(BS k4  
* @param data J4m2|HK  
* @param l vqJq=\ .m  
* @param i ~|8-Mo1ce  
*/ 2fMKS  
private void insertSort(int[] data, int start, int len) { S,qEKWyLd  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); jtQ}  
} t`"pn <  
} y9Q.TL>=[  
} te#Wv9x  
} 0{.[#!CSk  
t|}}#Z!I[f  
堆排序: pn aSOyR  
/9@ VnM  
package org.rut.util.algorithm.support; @A8@j%CK1  
j4]y(AA  
import org.rut.util.algorithm.SortUtil; Q;eY]l8  
"|d# +C  
/** bm-&H   
* @author treeroot %v<BE tq  
* @since 2006-2-2 y3@5~4+  
* @version 1.0 _ v3VUm#  
*/ Hus.Jfam  
public class HeapSort implements SortUtil.Sort{ Pbl#ieZM  
)&.Zxo;q=  
/* (non-Javadoc) ;a~ e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  t'e5!Ma  
*/ DDp\*6y3l  
public void sort(int[] data) { t,308Z  
MaxHeap h=new MaxHeap(); h=MEQ-3jg  
h.init(data); - ~`)V`@  
for(int i=0;i h.remove(); 18G=j@k7  
System.arraycopy(h.queue,1,data,0,data.length); RfzYoBN  
} e4Q2$ Q@b  
yuq2)  
private static class MaxHeap{ )PjU=@$lI  
nm]m!.$d  
void init(int[] data){ o6)U\z  
this.queue=new int[data.length+1]; OH6-\U'.Z  
for(int i=0;i queue[++size]=data; }]|e0 w:  
fixUp(size); 5T]dQ3[v4  
} _.^`DP >  
} fsUZG6  
w'a3=_nW  
private int size=0; UKp^TW1^  
4* V[^mht  
private int[] queue; z--Y  
4>(rskl_  
public int get() { IQQ QB  
return queue[1]; $9?<mP2-*  
} hf< [$B  
@5*$yi 'Cp  
public void remove() { dc,qQM  
SortUtil.swap(queue,1,size--); b-HELS`nX  
fixDown(1); C,VvbB  
} E5g|*M.+f  
file://fixdown &ZI-#(P  
private void fixDown(int k) { zAH6SaI$  
int j; b r\_  
while ((j = k << 1) <= size) { IRT0   
if (j < size %26amp;%26amp; queue[j] j++; n|eM}ymF+  
if (queue[k]>queue[j]) file://不用交换 Nyl)B7/w  
break; cSYMnB  
SortUtil.swap(queue,j,k); A/88WC$v  
k = j; g,s^qW0vds  
} <j:@ iP  
} Z^_gS&nDa~  
private void fixUp(int k) { YZ^mH <  
while (k > 1) { 40HhMTZ0-  
int j = k >> 1; #;/ob-  
if (queue[j]>queue[k]) ,#K{+1z:  
break; Yp EH(tq  
SortUtil.swap(queue,j,k); ##a.=gl  
k = j; 1;eWnb(  
} W}M 3z  
} cr~.],$Om  
U[W &D%'  
} dK>sHUu  
LyRW\\z2  
} I*H($ a  
QVo>Uit   
SortUtil: 3a}53? $  
CI^s~M >  
package org.rut.util.algorithm; >Et~h65d5  
LpN3cy>U  
import org.rut.util.algorithm.support.BubbleSort; ;Pe=cc"@  
import org.rut.util.algorithm.support.HeapSort; |G/W S0  
import org.rut.util.algorithm.support.ImprovedMergeSort; 2ae"Sd!-2  
import org.rut.util.algorithm.support.ImprovedQuickSort; <"{VVyK  
import org.rut.util.algorithm.support.InsertSort; }mpFo 2  
import org.rut.util.algorithm.support.MergeSort; BRXDE7vw  
import org.rut.util.algorithm.support.QuickSort; d:=Z<Y?d/  
import org.rut.util.algorithm.support.SelectionSort; 1H \  
import org.rut.util.algorithm.support.ShellSort; cc0T b  
'PWA  
/** @S1Z "%S  
* @author treeroot Ty}Y/jW  
* @since 2006-2-2 @;}vK=6L  
* @version 1.0 H h35cj  
*/ __}ut+H^5p  
public class SortUtil { l"/E,X  
public final static int INSERT = 1; m}6Jdt'|  
public final static int BUBBLE = 2; -`UOqjb]3  
public final static int SELECTION = 3; "v/Yw'! )  
public final static int SHELL = 4; P|t2%:_  
public final static int QUICK = 5; o+Fm+5t;  
public final static int IMPROVED_QUICK = 6; Ako]34Rl,  
public final static int MERGE = 7; IYv.~IQO  
public final static int IMPROVED_MERGE = 8; CV)K=Br5&_  
public final static int HEAP = 9; $ i%#fN  
{@hJPK8  
public static void sort(int[] data) { RoNE7|gF:  
sort(data, IMPROVED_QUICK); 6B+?X5-6DH  
} nWA>u J5  
private static String[] name={ w@pJ49  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" N9 h|_ax  
}; ]A%~bQ7  
\}W !  
private static Sort[] impl=new Sort[]{ !6,rN_a@Y  
new InsertSort(), v[V7$.%5Q  
new BubbleSort(), v2k@yxt(  
new SelectionSort(), tXcZl!3x  
new ShellSort(), s"R5'W\U  
new QuickSort(), N5zx#g  
new ImprovedQuickSort(), Po*!eD  
new MergeSort(), & H8  %  
new ImprovedMergeSort(), 3n~O&{  
new HeapSort() qiH)J- ~GZ  
}; J&&)%&h'I  
}42Hhu7j  
public static String toString(int algorithm){ NS-0-o|4#  
return name[algorithm-1]; o2[$X ONTl  
} 8:[ l1d86  
|K9*><P?)2  
public static void sort(int[] data, int algorithm) { 9sI&d  
impl[algorithm-1].sort(data); *7b?.{  
} nw(R=C  
vo(:g6$  
public static interface Sort { *HB 32 =qD  
public void sort(int[] data); gegM&Xo  
} H4W!Md  
'2 Y8  
public static void swap(int[] data, int i, int j) { 7M8cF>o  
int temp = data; }B_?7+  
data = data[j]; 70 Ph^e)  
data[j] = temp; r6GXmr  
} Kg`P@  
} X,bhX/h  
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