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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。 F1zsGlObu}  
插入排序: Jp`qE  
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package org.rut.util.algorithm.support; P EAo'63$  
T .L>PL ?=  
import org.rut.util.algorithm.SortUtil; mOi 8W,2  
/** c3aF lxW  
* @author treeroot K0?:?>*b#  
* @since 2006-2-2 > 1&_-  
* @version 1.0 6m{1im=  
*/ =arrp:  
public class InsertSort implements SortUtil.Sort{ . !;K5U  
!"x&tF  
/* (non-Javadoc) +~\c1|f  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IOOAaa @(  
*/ !tofO|E5  
public void sort(int[] data) { .Cf`D tK  
int temp; -}*YfwK  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); MXU8QVSY"  
} lAPvphO  
} L9)nRV8  
} sv?Lk4_  
js\|xfDxP  
} |nj,]pA  
wi/dR}*A  
冒泡排序: |d8x55dk  
4 '6HX#J  
package org.rut.util.algorithm.support; U ORoj )$I  
%CiZ>`5n#  
import org.rut.util.algorithm.SortUtil; UDz#?ZWnd  
+gOv5Eno-  
/** :CAbGs:56  
* @author treeroot f"G?#dW/1  
* @since 2006-2-2 aC2\C=ru_  
* @version 1.0 #\fxU:z~r  
*/ V ZArdXTP  
public class BubbleSort implements SortUtil.Sort{ n$T'gX#5  
>w"k:O17  
/* (non-Javadoc) CwVORf,uA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :Vf:_;  
*/ PKM8MYvo  
public void sort(int[] data) { 9Iod[ x  
int temp; Lk|%2XGO&  
for(int i=0;i for(int j=data.length-1;j>i;j--){ AlRng& o~  
if(data[j] SortUtil.swap(data,j,j-1); IvyBK]{|  
} UjU*`}k3  
} tZ ]/?+1G  
} *^&2L,w  
} +8 AGs,  
6-<>P E2  
} 36U z fBa  
+MfdZD  
选择排序: Sc zYL?w^  
GwoN=  
package org.rut.util.algorithm.support; le-Q&*  
24 i00s|#  
import org.rut.util.algorithm.SortUtil; A<VNttgG  
amn\#_(  
/** *g<D p2`  
* @author treeroot n_/_Y >{M0  
* @since 2006-2-2  hVB^:  
* @version 1.0 P+~{q.|._c  
*/ ^sp+ sr :  
public class SelectionSort implements SortUtil.Sort { BM&.Tw|x  
@;we4G5  
/* czV][\5  
* (non-Javadoc) T.sib&R  
* / b_C9'S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (hn@+hc  
*/ IE-c^'W=}m  
public void sort(int[] data) { I(*4N^9++  
int temp; AVys`{*c  
for (int i = 0; i < data.length; i++) { $i+ 1a0%n  
int lowIndex = i; Uva b*9vX  
for (int j = data.length - 1; j > i; j--) { (*Jcx:rH  
if (data[j] < data[lowIndex]) { B9RB/vHH  
lowIndex = j; -&u2C}4s  
} .'y]Ea  
} /{';\?w  
SortUtil.swap(data,i,lowIndex); 2,Og(_0>  
} f@%H"8w!  
} m|)Mc VV  
-4&SYCw  
} f"j"ZM{~U  
%/o8-N|_[  
Shell排序:  4_E{  
/^kZ}}9baU  
package org.rut.util.algorithm.support; .'q0*Pe  
`H5n _km  
import org.rut.util.algorithm.SortUtil; i%8I (F  
w>:~Ev]  
/** :1eJc2o  
* @author treeroot 5m`@ 4%)zp  
* @since 2006-2-2 8#9 di  
* @version 1.0 L)5YX-?  
*/ $\|$ekil4  
public class ShellSort implements SortUtil.Sort{  G.3 qg%  
8v},&rhPQq  
/* (non-Javadoc) \o-Q9V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LP8Stj JP  
*/ Q3M;'m  
public void sort(int[] data) { J2BW>T!tuw  
for(int i=data.length/2;i>2;i/=2){ ][|)qQ%V  
for(int j=0;j insertSort(data,j,i); J?WT  
} Qo !/]\  
} ckXJ9>  
insertSort(data,0,1); uM\(#jZ  
}  m/)Wn  
pv.0!a/M  
/** =gCv`SFW  
* @param data bY4~\cP.  
* @param j 30(O]@f~  
* @param i 2Rc'1sCth-  
*/ 6OJ`R.DM`  
private void insertSort(int[] data, int start, int inc) { =y; tOdj  
int temp; D 6trqB  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); &wbe^Wp  
} 7u"t4Or  
} uUUj?%  
} @;iW)a_M  
5eI3a!E]O  
} e7f3dqn0  
E?o1&(2p  
快速排序: 28u)q2s^W|  
 A7*<,]qT  
package org.rut.util.algorithm.support; v,N*vqWS  
.z u0GsU=  
import org.rut.util.algorithm.SortUtil; VjbRjn5LI  
}Z MbTsm  
/** sT"U}  
* @author treeroot %t&n%dhJ  
* @since 2006-2-2 >yC1X|d~t  
* @version 1.0 +'9l 2DI;  
*/ NPws^  
public class QuickSort implements SortUtil.Sort{ {{c/:FTEU  
$=7[.z&  
/* (non-Javadoc) PN ,pEk|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A"t~ )  
*/ a"^0;a  
public void sort(int[] data) { gVM9*3LH6  
quickSort(data,0,data.length-1); fcd\{1#u  
} TAbd[:2{F  
private void quickSort(int[] data,int i,int j){ isaDIl;L/  
int pivotIndex=(i+j)/2; {VBx;A3*I  
file://swap [A?Dx-R;(  
SortUtil.swap(data,pivotIndex,j); gF( aYuk  
99%oY  
int k=partition(data,i-1,j,data[j]);  VP H  
SortUtil.swap(data,k,j); 8X":,s!  
if((k-i)>1) quickSort(data,i,k-1); \F;V69'  
if((j-k)>1) quickSort(data,k+1,j); 8RJXY:%  
Tbl~6P  
} L>~wcoB  
/** V!#+Ti/w4  
* @param data .i[rd4MCK  
* @param i {&,9Zy]"S  
* @param j USLG G}R  
* @return bD_|n!3  
*/ *oAv:8"iY  
private int partition(int[] data, int l, int r,int pivot) { (Zi(6 T\z  
do{ q<mDs$^K  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); h2g|D(u)  
SortUtil.swap(data,l,r); Wk$ 7<gkr  
} iiS^xqSNCt  
while(l SortUtil.swap(data,l,r); tu}AJ  
return l; h#Cq-^D#~  
} =e'b*KTL,  
(q'w"qj  
} [03$*BCq3  
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改进后的快速排序: f/t1@d!  
X;Tayb  
package org.rut.util.algorithm.support; Vb>!;C  
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import org.rut.util.algorithm.SortUtil; %N 8/g]`7  
.#zmX\a  
/**  PZZTRgVc  
* @author treeroot r|t ;#  
* @since 2006-2-2 <fq?{z  
* @version 1.0 c e`3&  
*/ >[TB8  
public class ImprovedQuickSort implements SortUtil.Sort { ("(:wYR%  
 B9IqX  
private static int MAX_STACK_SIZE=4096; ~B0L7}d  
private static int THRESHOLD=10; iXN"M` nhm  
/* (non-Javadoc) Lc ,te1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S-{3'D[Nj  
*/ 2_@vSwC  
public void sort(int[] data) { Q+(}nz4  
int[] stack=new int[MAX_STACK_SIZE]; 8&FnXhZg4  
"Ka2jw,  
int top=-1; X]6Hgz66  
int pivot; ,L ;ueAo  
int pivotIndex,l,r; 'V";"Ei  
j)IXe 0dMC  
stack[++top]=0; >SO !{  
stack[++top]=data.length-1; C'x?riJ/  
,c#IxB/0  
while(top>0){ n_5m+ 1N  
int j=stack[top--]; L'k )  
int i=stack[top--]; )rJ{}U:S  
q]F2bo  
pivotIndex=(i+j)/2; T1TKwU8l  
pivot=data[pivotIndex]; 4%wP}Zj#  
My'u('Q%  
SortUtil.swap(data,pivotIndex,j); ~_C[~-  
S#+Dfa`8X  
file://partition t,#9i#q#  
l=i-1; 2 O\p`,.  
r=j;  # Vz9j  
do{ $_s"16s  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); l \~w(8g<A  
SortUtil.swap(data,l,r); +Bk d  
} C.I.f9s?R  
while(l SortUtil.swap(data,l,r); JjarMJr| D  
SortUtil.swap(data,l,j); #$p&J1   
p9w<|ZQ]:  
if((l-i)>THRESHOLD){  y/t{*a  
stack[++top]=i; PLDg'4DMg  
stack[++top]=l-1; nO^aZmSu  
} >?iL_YTX  
if((j-l)>THRESHOLD){ "N'tmzifh  
stack[++top]=l+1; emp*j@9  
stack[++top]=j; ER0nrTlB<  
} +92/0  
v%O KOrJ  
} *nUD6(@g  
file://new InsertSort().sort(data); sE87}Lz  
insertSort(data); 39| W(,  
} ,!U._ic'B  
/** ZdbZ^DUR<(  
* @param data ^`ah\L  
*/ ta`}}I  
private void insertSort(int[] data) { *Dx&}"  
int temp; _[ml<HW]  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); f0rM 4"1  
} ^_FB .y%  
} {+~}iF<%  
} ;Z]i$Vi_r  
?Fgk$ WqC  
} hwkm'$}  
oNHbQ&h  
归并排序: WW33ZJ  
hl`4_`3y  
package org.rut.util.algorithm.support; h}PeXnRU  
qN h:;`  
import org.rut.util.algorithm.SortUtil; },9Hq~TA  
&,B\ig1Jf  
/** ?@"F\Bv<h  
* @author treeroot yPG,+uQ$.  
* @since 2006-2-2 jd<`W  
* @version 1.0 !1 :%!7  
*/ E.V#Bk=  
public class MergeSort implements SortUtil.Sort{ 5yPw[ EY  
bup)cX^  
/* (non-Javadoc) Db"jzMW.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vmW > $P  
*/ yVQ0;h  
public void sort(int[] data) { &AR@5M u  
int[] temp=new int[data.length]; ? <b>2j  
mergeSort(data,temp,0,data.length-1); 1<y(8C6  
} y[M<x5  
13 `Or(>U  
private void mergeSort(int[] data,int[] temp,int l,int r){ WGwpryaya  
int mid=(l+r)/2; ;.$AhjqiP  
if(l==r) return ; eXo7_#  
mergeSort(data,temp,l,mid); d{^9` J'  
mergeSort(data,temp,mid+1,r); UIS\t^pJD  
for(int i=l;i<=r;i++){ ) #G5XS+)  
temp=data; ' S%?&4  
} %M"rc4Xd  
int i1=l; bgD4;)?5b  
int i2=mid+1; [(Z{5gK  
for(int cur=l;cur<=r;cur++){ T,z 7U2O  
if(i1==mid+1) cXM4+pa=%  
data[cur]=temp[i2++]; .Jk[thyU  
else if(i2>r) nf#;]FijB  
data[cur]=temp[i1++]; 8nzDLFxp_  
else if(temp[i1] data[cur]=temp[i1++]; m-V_J`9"  
else >bQ'*!  
data[cur]=temp[i2++]; a,<l_#'  
} l":\@rm`  
} M<h2+0(il  
fmqHWu*wG  
} z%ZAN-  
TmI~P+5w  
改进后的归并排序: \F`%vZrKR  
VK>ZH^-  
package org.rut.util.algorithm.support; QD6<sw@]P  
*F:f\9   
import org.rut.util.algorithm.SortUtil; #0OW0:Q  
-U&k%X   
/** p6)Jzh_/  
* @author treeroot ]70V  
* @since 2006-2-2 )4h4ql W  
* @version 1.0 Jz"Yb  
*/ Rr>nka)U  
public class ImprovedMergeSort implements SortUtil.Sort { < cNJrer  
L\)GPTo!x  
private static final int THRESHOLD = 10; }Xa1K;KM{  
h = <x%sie  
/* ,x (?7ZW>  
* (non-Javadoc) W(~7e?fO  
* C/34K(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bU$4"_eA B  
*/ eK8y'VY  
public void sort(int[] data) { pZeJ$3@vk  
int[] temp=new int[data.length]; 7T[Kjn^{Oj  
mergeSort(data,temp,0,data.length-1); 2c)Ez?  
} {=3&_/9s){  
_x+)Tv  
private void mergeSort(int[] data, int[] temp, int l, int r) { z89!\Q  
int i, j, k; xWC*DKV  
int mid = (l + r) / 2; `MD%VHQ9U  
if (l == r) +!"GYPUXy  
return; 0oT~6BGm  
if ((mid - l) >= THRESHOLD) a!?JVhD&  
mergeSort(data, temp, l, mid); 0Y|"Bo9k  
else },eV?eGj  
insertSort(data, l, mid - l + 1); t,D7X1W  
if ((r - mid) > THRESHOLD) f2*e&+LjTP  
mergeSort(data, temp, mid + 1, r); WdtZ{H  
else $"e$#<g  
insertSort(data, mid + 1, r - mid); 5t=7-  
msf%i!  
for (i = l; i <= mid; i++) { @$G{t^&os  
temp = data; Ms>CO7Nvy  
} 3UR'*5|'  
for (j = 1; j <= r - mid; j++) { Bp:PAy  
temp[r - j + 1] = data[j + mid]; $kAal26z  
} ]LbFh5;s  
int a = temp[l]; zG^|W8um_  
int b = temp[r]; b8FSVV 7@  
for (i = l, j = r, k = l; k <= r; k++) { }0okyGg>q  
if (a < b) { lf`" (:./  
data[k] = temp[i++]; obzdH:S  
a = temp; 7)-uYi] dA  
} else { IjaFNZZC!  
data[k] = temp[j--]; |BA&ixHe~C  
b = temp[j]; 5MX7V4ist  
} x->H~/  
} $^K12Wcp-  
} `f)X!S2l  
xR~9|H9a  
/** _keI0ML-#  
* @param data ^55q~DP}>  
* @param l 9*Z!=Y#4,  
* @param i f%[0}.wp  
*/ 8T523VI  
private void insertSort(int[] data, int start, int len) { Q8h0:Q  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); q1Sr#h|  
} /mK."5-cm  
} .ri?p:a}w  
} o;[cApiQ,2  
} e'dx Y(  
]H-5    
堆排序: (F+]h]KSi  
zE8qU;  
package org.rut.util.algorithm.support; s=8$h:^9>  
PP{s&(  
import org.rut.util.algorithm.SortUtil; n_9Wrx328  
5>\Lk>rI  
/** !Bu=?gf  
* @author treeroot O-uf^ S4  
* @since 2006-2-2 #&sw%CD  
* @version 1.0 =Sjf-o1V  
*/ -/ YY.F-  
public class HeapSort implements SortUtil.Sort{ M`D`-vv  
E0t%]?1  
/* (non-Javadoc) UA3!28Y&E3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qZ<|A%WQ  
*/ a/Ik^:>m  
public void sort(int[] data) { Nm{J=`  
MaxHeap h=new MaxHeap(); -Pp =)_O  
h.init(data); :"Gd;~p.  
for(int i=0;i h.remove(); Sp-M:,H3H  
System.arraycopy(h.queue,1,data,0,data.length); *r/o \pyH  
} .22}= z  
'GF<_3I2l  
private static class MaxHeap{ BK 9+fO  
dF+R q|n{  
void init(int[] data){ undH{w=  
this.queue=new int[data.length+1]; YgLHp/  
for(int i=0;i queue[++size]=data; =`+c}i?  
fixUp(size); p?,T%G+gqO  
} N"Cd{3  
} WqRaD=R->;  
LTZ~Id-)P  
private int size=0; 0?w4  
@$7l  
private int[] queue; O_P8OA#|  
fX/k;0l  
public int get() { Ksb55cp`  
return queue[1]; ;\54(x}|K  
} z)fg>?AGr  
[&5%$ T  
public void remove() { {(5M)|>  
SortUtil.swap(queue,1,size--); RD6`b_]o  
fixDown(1); 83pXj=k<  
} |IZFWZd  
file://fixdown um=qT)/D  
private void fixDown(int k) { |>dqZ_)v  
int j; H|8i|vbi  
while ((j = k << 1) <= size) { GmdS~Fhp  
if (j < size %26amp;%26amp; queue[j] j++; ia*Bcx_RW+  
if (queue[k]>queue[j]) file://不用交换 +i(;@% kv  
break; +kM*BCPYE  
SortUtil.swap(queue,j,k); OE(!^"5?[  
k = j; ."h>I @MH  
} `{+aJ0<S  
} >U6 2vX"  
private void fixUp(int k) { qlg?'l$03)  
while (k > 1) { ,3bAlc8D7  
int j = k >> 1; qwvch^?>FQ  
if (queue[j]>queue[k])  t@+z r3  
break; 4>Y\Y$3  
SortUtil.swap(queue,j,k); (;2]`D [x  
k = j; +`+r\*C5  
} 87OX:6  
} `y*o -St3  
ZJ'FZ8Sx  
} _8s1Wh G  
$@eFSA5k,7  
} 6B&ERdoX  
%R-KkK<S  
SortUtil: FQO>%=&4  
p77  
package org.rut.util.algorithm; q/3 )yG6s  
- %`iLu  
import org.rut.util.algorithm.support.BubbleSort; *:,y`!F=y  
import org.rut.util.algorithm.support.HeapSort; _Bq[c  
import org.rut.util.algorithm.support.ImprovedMergeSort; D`@*udn=  
import org.rut.util.algorithm.support.ImprovedQuickSort; lk%W2N5  
import org.rut.util.algorithm.support.InsertSort; /F_(&H!m  
import org.rut.util.algorithm.support.MergeSort; 1J[|Ow  
import org.rut.util.algorithm.support.QuickSort; T UO*w  
import org.rut.util.algorithm.support.SelectionSort; ]oE:p  
import org.rut.util.algorithm.support.ShellSort; B+n(K+  
:=2l1Y[-G  
/** T]y^PT<8?  
* @author treeroot `t Zw(Z=h  
* @since 2006-2-2 }Oe9Zq  
* @version 1.0 !~a1xI~s  
*/ {f[X)  
public class SortUtil { `dm}|$X|  
public final static int INSERT = 1; $?dutbE  
public final static int BUBBLE = 2; KO&oT#S  
public final static int SELECTION = 3; ]V.0%Ccw;.  
public final static int SHELL = 4; xYD.j~  
public final static int QUICK = 5; vj+ S  
public final static int IMPROVED_QUICK = 6; Qh!h "]  
public final static int MERGE = 7; (7?jjH^4  
public final static int IMPROVED_MERGE = 8; I>%@[h,+  
public final static int HEAP = 9; |emZZj  
]?n~?dD{]  
public static void sort(int[] data) { j[&C6l+wH  
sort(data, IMPROVED_QUICK); yUlYf#`H  
} {+x;J4  
private static String[] name={ tjt#2i8/  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Ukg iSv+  
}; '`/w%OEVC5  
U Y')|2y 5  
private static Sort[] impl=new Sort[]{ 3`> nQ4zC  
new InsertSort(), WG(%Pkowv  
new BubbleSort(), 8~eYN- #W&  
new SelectionSort(), I+FQ2\J*H  
new ShellSort(), <:Z-zQp)?  
new QuickSort(), 93fClF|@  
new ImprovedQuickSort(), V8IEfU  
new MergeSort(), Q0-}!5`E1$  
new ImprovedMergeSort(), [y1 x`WOk9  
new HeapSort() [cvtF(,  
}; &+-]!^2o  
@DK;i_i  
public static String toString(int algorithm){ 0OPpALl  
return name[algorithm-1]; [XDr-5Dm  
} # `b5kqQm  
k5TPzm=y{  
public static void sort(int[] data, int algorithm) { X7{ h/^  
impl[algorithm-1].sort(data); E|5lm  
} drEND`,@6|  
Yn1CU  
public static interface Sort { Fc.1)yh.  
public void sort(int[] data); V.12  
} u<a =TPAU  
sN9 SuQ  
public static void swap(int[] data, int i, int j) { .qG*$W2f  
int temp = data; )1 =|\  
data = data[j]; # vBS7ba  
data[j] = temp; .m \y6  
} 3FpSo+  
} q+}Er*r  
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3+5=?,请输入中文答案:八 正确答案:八