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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。 w:qwU\U>x  
插入排序: 62W3W1: W  
4o%hH  
package org.rut.util.algorithm.support; })J]D~!p  
;>PV]0bOm>  
import org.rut.util.algorithm.SortUtil; lU\|F5O@#  
/** 4F'@yi^Gt  
* @author treeroot >6@UjGj54  
* @since 2006-2-2 b&LhydaJ  
* @version 1.0 =/zQJzN  
*/ R)#"Ab Z'  
public class InsertSort implements SortUtil.Sort{ Z I8p(e  
dZZHk  
/* (non-Javadoc) 5~\W!|j/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o}[wu:>yk  
*/ 1f}Dza9  
public void sort(int[] data) { m^TkFt<BM  
int temp; er97&5  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); sUg7  
} 2hquE_1S[w  
} @.%ll n  
} WhkE&7Gk  
F.JE$)B2EX  
} Z!*Wn`d-k  
vwP83b0ov"  
冒泡排序: wt-)5f'{  
AR&u9Y)I  
package org.rut.util.algorithm.support; V;>p@uE,P  
P*\.dAi  
import org.rut.util.algorithm.SortUtil; }APf^Ry  
f9; M"Pd  
/** A6-JV8^  
* @author treeroot `>K;S!z  
* @since 2006-2-2 W4Zi?@L>'  
* @version 1.0 zV%U4P)Dao  
*/ ETYw  
public class BubbleSort implements SortUtil.Sort{ O%rjY  
htIV`_<Ro  
/* (non-Javadoc) Cfa?LgSz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KpSHf9!&[  
*/ ni9/7  
public void sort(int[] data) { ' R{ [Y)  
int temp; la f b^  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 94H 6`  
if(data[j] SortUtil.swap(data,j,j-1); 1XwbsKQ}  
} 75gE>:f  
} =EFF2M`F  
} ao Y "uT+  
} SeKU ?\  
a:1-n %&F  
} j:rGFd  
$ -;,O8yR  
选择排序: IEHAPt'  
&d=j_9   
package org.rut.util.algorithm.support; *V5R[   
vWwp'q  
import org.rut.util.algorithm.SortUtil; e;!si>N  
k/cQJz  
/** Hj LY\.S  
* @author treeroot LY/K ,6^a  
* @since 2006-2-2 /z`LB  
* @version 1.0 zuXJf+]  
*/ UP^{'eh  
public class SelectionSort implements SortUtil.Sort { `9%@{Ryo  
7@5}WNr  
/* ,SH))%Cyt  
* (non-Javadoc) mZ'`XAS~;  
* +wr2TT~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (;V6L{Rf>  
*/ dFK/  
public void sort(int[] data) { le`fRq8f&  
int temp; +,f|Y6L<  
for (int i = 0; i < data.length; i++) { d A[I  
int lowIndex = i; ma,H<0R  
for (int j = data.length - 1; j > i; j--) { NvQN  
if (data[j] < data[lowIndex]) { 7vubkj&  
lowIndex = j; K#kU6/  
} |-%[Z  
} ;i@,TU  
SortUtil.swap(data,i,lowIndex); k9xfv@v}  
} *v_+a:  
} cE$7CSR  
'WUd7  
} Q!iM7C!8  
Z~CL|=  
Shell排序: |1uyJ?%B  
?zM]p"M  
package org.rut.util.algorithm.support; xp.~i*!`  
3{O^q/R  
import org.rut.util.algorithm.SortUtil; FIDV5Y/f  
>$j?2,Za(V  
/** by (xv0v;  
* @author treeroot 1 \:5ow&a  
* @since 2006-2-2 R<I)}<g(A3  
* @version 1.0 IC"bg<L,*  
*/ Ko|nF-r_  
public class ShellSort implements SortUtil.Sort{ wsYvbI!  
\]1qAFB5  
/* (non-Javadoc) >|'u:`A  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W_8N?coM  
*/ w3WBgH  
public void sort(int[] data) { slaYr`u  
for(int i=data.length/2;i>2;i/=2){ ,4M7:=gf  
for(int j=0;j insertSort(data,j,i); 2+ m%f"  
} B>hf|.GI  
} 50q(8F-N  
insertSort(data,0,1); ZF^$?;'3  
} pyJY]"UHVE  
3|x*lmit  
/** h fZY5+Z<  
* @param data |WwC@3)  
* @param j gqJSz}'  
* @param i H0r@dn  
*/ I7,5ID4pn  
private void insertSort(int[] data, int start, int inc) { 8w /$!9[  
int temp; 7uQiP&v  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 5+Fr/C  
} H3CG'?{ _  
} G'<:O(Imu  
} |C"(K-do  
.^ djt  
} +?y ', Ir  
= Lt)15  
快速排序: blyU5 3g  
0P i+ (X  
package org.rut.util.algorithm.support; AQ+MjS,  
p?rh+0wgX  
import org.rut.util.algorithm.SortUtil; )}w2'(!X8  
PgHe;^?j  
/** 5argw+2s4$  
* @author treeroot 5,dKha  
* @since 2006-2-2 Bl[4[N  
* @version 1.0 ;&7dX^oH  
*/ I[nSf]Vm>  
public class QuickSort implements SortUtil.Sort{ !y_4.&C{  
JX!z,X?r4  
/* (non-Javadoc) k4T`{s}e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *'&]DJj  
*/ oD<aWZ"Z  
public void sort(int[] data) { "qh~wKJ  
quickSort(data,0,data.length-1); {0L.,T~g+[  
} F-R5Ib-F*A  
private void quickSort(int[] data,int i,int j){ T8^`<gr.  
int pivotIndex=(i+j)/2; gpT~3c;l=  
file://swap c o 8bnH  
SortUtil.swap(data,pivotIndex,j); <cm(QNdcC  
ICdfak  
int k=partition(data,i-1,j,data[j]); ^k J>4  
SortUtil.swap(data,k,j); pYN.tD FO  
if((k-i)>1) quickSort(data,i,k-1); h4ozwVA  
if((j-k)>1) quickSort(data,k+1,j); Q&5s,)w-  
!#y_vz9  
} +-X 6 8`  
/** ,{6 Vf|?  
* @param data )x5t']w`K  
* @param i 4yK{(!&i+  
* @param j Tfq7<<0$N  
* @return B)/L[ )S  
*/ y:',)f }  
private int partition(int[] data, int l, int r,int pivot) { 1VKu3  
do{  ^t}1 $H  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Lm&BT)*  
SortUtil.swap(data,l,r); l4bL N  
} po9f[/s'+o  
while(l SortUtil.swap(data,l,r); _.%U}U  
return l; [_HY6gr  
} ]A=yj@o$xN  
+-r ~-bs  
} 'vwu^u?  
rSa=NpFxLu  
改进后的快速排序: FW"n+7T  
Nn#;Kjul.  
package org.rut.util.algorithm.support; <EKTFHJ!  
U3**x5F_  
import org.rut.util.algorithm.SortUtil; v? Zo5uVoq  
DuQW?9^232  
/** mWUkkR(/  
* @author treeroot Y(RB@+67  
* @since 2006-2-2 , Dab(  
* @version 1.0 W" Tj.oCUG  
*/ #=V\WQb  
public class ImprovedQuickSort implements SortUtil.Sort { :u]QEZ@@  
;#bDz}|\AN  
private static int MAX_STACK_SIZE=4096; 6Vgxfic  
private static int THRESHOLD=10; 7v&>d,  
/* (non-Javadoc) @?JFqwq!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6$)FQ U  
*/ 8'PK}heBU  
public void sort(int[] data) { 5<XWbGW  
int[] stack=new int[MAX_STACK_SIZE]; &g"`J`  
yUjkRT&h  
int top=-1; Xhs*nt%l  
int pivot; ,!O]c8PcU  
int pivotIndex,l,r; 4V&(w, zl  
SM8f"H28  
stack[++top]=0; >fi_:o  
stack[++top]=data.length-1; )g?ox{Hol  
]JR2Av  
while(top>0){ 1'!D   
int j=stack[top--]; EK&";(x2(  
int i=stack[top--]; |%oI,d=ycv  
r=HL!XFk  
pivotIndex=(i+j)/2; eI9#JM|2  
pivot=data[pivotIndex]; bcgXpP  
-TMg9M4  
SortUtil.swap(data,pivotIndex,j); 9m.MGJbQ_f  
Wn{MY=5Y  
file://partition v|MT^.  
l=i-1; Cg(&WJw(ep  
r=j; sd%m{P2  
do{ &5[B\yv  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); '#C5m#v  
SortUtil.swap(data,l,r); ce [ Maw  
} |xF!3GGms  
while(l SortUtil.swap(data,l,r); Gs\D`| 3=  
SortUtil.swap(data,l,j); OdpHF~(Y/  
u#y#(1 =  
if((l-i)>THRESHOLD){ LzxO=+=9!q  
stack[++top]=i; S,EL=3},=  
stack[++top]=l-1; *07?U")  
} ^/VnRpU  
if((j-l)>THRESHOLD){ {+]tx46$  
stack[++top]=l+1; W^7yh&@lU  
stack[++top]=j; jgiS/oW  
} \a4X},h\  
$;&l{=e2)  
} jK".iqx2L  
file://new InsertSort().sort(data); *+XiBho  
insertSort(data); n.i 8?:  
} .SLpgYFL{  
/** (xE |T f  
* @param data /M JI^\CA  
*/ /~Bs5f.]?  
private void insertSort(int[] data) { MsZx 0]  
int temp; $o0.oY#  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); IT7],pM  
} FUf.3@}  
} 9)8Cf% <(  
} *$5p,m6G  
KnKf8c  
} _%er,Ed  
x4/{XRQ  
归并排序: 6{{<+ o  
{kBsiSvsA;  
package org.rut.util.algorithm.support; ]28j$)6  
NMQG[py!f  
import org.rut.util.algorithm.SortUtil; r \[|'hA  
I:HrBhI)wP  
/** 4AKr.a0q  
* @author treeroot =j{tFxJ  
* @since 2006-2-2 4l{$dtKbI  
* @version 1.0 j0j!oj)7I  
*/ sgDSl@lB  
public class MergeSort implements SortUtil.Sort{ PxQQfI>  
,"KfZf;?  
/* (non-Javadoc) '9=b@SaAj  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \#xq$ygg  
*/ a]P w:lT  
public void sort(int[] data) { h@Jg9AM  
int[] temp=new int[data.length]; *u:,@io7'G  
mergeSort(data,temp,0,data.length-1); 0w: 3/WO  
} 97U OH  
/G|v.#2/g  
private void mergeSort(int[] data,int[] temp,int l,int r){ 0}"\3EdAbD  
int mid=(l+r)/2; W9pY=9]p+  
if(l==r) return ; nF_q{e7  
mergeSort(data,temp,l,mid); AorY#oq  
mergeSort(data,temp,mid+1,r); gL-kI *Ra  
for(int i=l;i<=r;i++){ gS'7:UH,  
temp=data; /t< &  
} O_7}H)  
int i1=l; 0j;ZPqEf3  
int i2=mid+1; Z'>UR.g  
for(int cur=l;cur<=r;cur++){ ;HH%OfQq  
if(i1==mid+1) `^,E4Qy  
data[cur]=temp[i2++]; t0jE\6r  
else if(i2>r) IG# wY  
data[cur]=temp[i1++]; t$%<eF@w  
else if(temp[i1] data[cur]=temp[i1++]; h=,h Yz?]  
else :o ~'\:/  
data[cur]=temp[i2++]; FZn1$_Svr  
} jL8A_'3B  
} ]hS<"=oj  
>zDQt7+g;  
} CuH4~6  
< K!r\^  
改进后的归并排序: $~G5s<r  
Xz^k.4 Y{4  
package org.rut.util.algorithm.support; iN. GC^l  
B1J,4  
import org.rut.util.algorithm.SortUtil; " acI:cl?,  
bL`\l!qQx;  
/** Exqz$'(W9  
* @author treeroot 7%EIn9P  
* @since 2006-2-2 0 K#|11r  
* @version 1.0 gm2|`^Xq$  
*/ ?gU raSFU  
public class ImprovedMergeSort implements SortUtil.Sort { @2L^?*n=  
R;pW,]}g,  
private static final int THRESHOLD = 10; xjiV9{w  
LdH1sHy*d`  
/* \1gAWUt('  
* (non-Javadoc) :e=7=|@7  
* =oIt.`rf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?g{[U0)  
*/ T)sIV5bk  
public void sort(int[] data) { yNXYS  
int[] temp=new int[data.length]; O5vfcX4>  
mergeSort(data,temp,0,data.length-1); krFp q;  
} V\x'w*FP  
C5-u86F  
private void mergeSort(int[] data, int[] temp, int l, int r) { yQUrHxm  
int i, j, k; jvsSP?]n  
int mid = (l + r) / 2; Zs79,*o+0M  
if (l == r) ~dEo^vJD  
return; -k7b# +T  
if ((mid - l) >= THRESHOLD) .pWRV<25  
mergeSort(data, temp, l, mid); b#p0s?*  
else '%t$m f!nV  
insertSort(data, l, mid - l + 1); %;ED} X  
if ((r - mid) > THRESHOLD) NZv8#  
mergeSort(data, temp, mid + 1, r); BHAFO E  
else WN{8gL&y  
insertSort(data, mid + 1, r - mid); EBW*v '  
rhQ+ylt8I  
for (i = l; i <= mid; i++) { gh*k\0  
temp = data; ]gVA6B?&9  
} B=K<k+{6"  
for (j = 1; j <= r - mid; j++) { -e(<Jd_=  
temp[r - j + 1] = data[j + mid]; -s2)!Iko&  
} *Vq'%b9  
int a = temp[l]; )cRHt:  
int b = temp[r]; Zf}2c8Vc4  
for (i = l, j = r, k = l; k <= r; k++) { zeQ~'ao<  
if (a < b) { XrTc5V  
data[k] = temp[i++]; h ChO  
a = temp; ]}].A q  
} else { o g9|}E>  
data[k] = temp[j--]; ?>*d82yO  
b = temp[j]; %A~. NNbS  
} (*\&xRY|C  
} @H$am  
} 5)S;R,  
nbP}a?XC  
/** c^1JSGv  
* @param data fgtwV ji  
* @param l d7b`X<=@s  
* @param i NiVLx_<Pr'  
*/ !gLJBp  
private void insertSort(int[] data, int start, int len) { }0E@eL  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); D[@- `F  
} U&B(uk(2  
} cwaR#-#  
} W`_Wi*z4  
} 1_LKqBgo  
{`2 0'  
堆排序: Ja*,ht(5  
[7DU0Xg7  
package org.rut.util.algorithm.support; gM1:*YK  
~oSA&v4V  
import org.rut.util.algorithm.SortUtil; e[T3,2C  
teDRX13=;  
/** '!Va9m*w7  
* @author treeroot B &Z0ZWx  
* @since 2006-2-2 =r]_$r%gR  
* @version 1.0 !K*3bY`#  
*/ otjT ?R2g'  
public class HeapSort implements SortUtil.Sort{ Uhh[le2 %  
N|>MqH,Bt  
/* (non-Javadoc) ;MYK TE>m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aRWj+[[7y  
*/ ?cz7s28a  
public void sort(int[] data) { =u9e5n  
MaxHeap h=new MaxHeap(); U/q"F<?.c  
h.init(data); $?kTS1I(  
for(int i=0;i h.remove(); -6F\=  
System.arraycopy(h.queue,1,data,0,data.length); u{W I 4n?  
} JK^%V\m  
nrpbQ(zI*  
private static class MaxHeap{ *yI( (G/  
DP*V|)  
void init(int[] data){ Sb?v5  
this.queue=new int[data.length+1]; K~UT@,CS60  
for(int i=0;i queue[++size]=data; ?j!/ Hc/b4  
fixUp(size); '2|mg<Ft  
} uh)f/)6  
} 96F+I!qC  
cru&nH*O^  
private int size=0; 'g)5vI~'  
@&G %cW(  
private int[] queue; {|zQ .s A  
q}JP;p(#  
public int get() { 9~f RYA*  
return queue[1]; }236{)DuN  
} Pa\yp?({q  
G7-.d/8|^  
public void remove() { O'k<4'TC  
SortUtil.swap(queue,1,size--); )u!}`UJ  
fixDown(1); ]Ah<kq2sk  
} =snJ+yn!  
file://fixdown bb/A}< zD  
private void fixDown(int k) { czo*_q%  
int j; /4*>.Nmb,f  
while ((j = k << 1) <= size) { S^e e<%-  
if (j < size %26amp;%26amp; queue[j] j++; #{bT=:3a  
if (queue[k]>queue[j]) file://不用交换 +>mU4Fwp  
break; Z79Y$d>G<E  
SortUtil.swap(queue,j,k); ir )~T0  
k = j; Vc|QW  
} .#e?[xxk  
} NTM.Vj -_h  
private void fixUp(int k) { uhmSp+%  
while (k > 1) { Dm;aTe  
int j = k >> 1; Bb5RZ#oa  
if (queue[j]>queue[k]) ^j_t{h)W(0  
break; PTA_erU  
SortUtil.swap(queue,j,k); vN)l3  
k = j; Kzfy0LWM  
} &ujq6~#  
} 60 p*4>^v  
l(tMo7iPa  
} G`jJKiC  
.)=j~}\  
} r$d'[ZcX  
6CWm;%B#G  
SortUtil: {1wjIo"ptg  
g>f_'7F&  
package org.rut.util.algorithm; H]f8W]"c[  
M059"X="  
import org.rut.util.algorithm.support.BubbleSort; CM%;r5  
import org.rut.util.algorithm.support.HeapSort; +u7nx  
import org.rut.util.algorithm.support.ImprovedMergeSort; za4:Jdr  
import org.rut.util.algorithm.support.ImprovedQuickSort; ]:]w+N%7  
import org.rut.util.algorithm.support.InsertSort; ,?!4P+ob  
import org.rut.util.algorithm.support.MergeSort; ];}7 %3  
import org.rut.util.algorithm.support.QuickSort; #J c)v0_  
import org.rut.util.algorithm.support.SelectionSort; ?m.Ry  
import org.rut.util.algorithm.support.ShellSort; Xu5^ly8p9q  
?[Qxq34  
/** RZKczZGZg  
* @author treeroot L)Ru]X`  
* @since 2006-2-2 gtb,}T=1  
* @version 1.0 bcprhb  
*/ o{ \r1<D  
public class SortUtil { ?pF uV`Zm  
public final static int INSERT = 1; _"";SqVB  
public final static int BUBBLE = 2; IY9##&c3>  
public final static int SELECTION = 3; ZNbb8v  
public final static int SHELL = 4; Q pbzx/2h  
public final static int QUICK = 5; Wp$'#HhB  
public final static int IMPROVED_QUICK = 6; '^6x-aeq[D  
public final static int MERGE = 7; #v4q:&yKf  
public final static int IMPROVED_MERGE = 8; lW YgIpw  
public final static int HEAP = 9; -jsk-,  
{f)"F;]V  
public static void sort(int[] data) { j%s:d(H`  
sort(data, IMPROVED_QUICK); Kkds^v6  
} ob.=QQQs  
private static String[] name={ w!^{Q'/,Q  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Gl>_C@n0h  
}; !tofO|E5  
.Cf`D tK  
private static Sort[] impl=new Sort[]{ nqyB,vv0  
new InsertSort(), .EoLJHL }  
new BubbleSort(), 8klu*  
new SelectionSort(), )y}W=Q>T  
new ShellSort(), 4~/3MG  
new QuickSort(), T]Eg9Y:+v  
new ImprovedQuickSort(), }xM >F%  
new MergeSort(), p8MPn>h<  
new ImprovedMergeSort(), R~DZY{u+/$  
new HeapSort() 7vs>PV  
}; R k).D 6  
-gKo@I  
public static String toString(int algorithm){ mC(q8%/;  
return name[algorithm-1]; [8Zvs=1  
} f"G?#dW/1  
aC2\C=ru_  
public static void sort(int[] data, int algorithm) { N-Nq*  
impl[algorithm-1].sort(data); $]yHk  
} 'hi.$G_R  
=m?x|Zc_v  
public static interface Sort { ${F] N }  
public void sort(int[] data); /!Ng"^.e  
} %7~~*_G  
H#;-(`F  
public static void swap(int[] data, int i, int j) { RK`C31Ws  
int temp = data; mxV0"$'Fm  
data = data[j]; KoNJ;YiKtN  
data[j] = temp; -NyfW+T={  
} }[OOkYF#r  
} zLiFk<G@Xi  
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10+5=?,请输入中文答案:十五