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。 opKk#40
插入排序: NPL(5@
+@QN)ZwVy
package org.rut.util.algorithm.support; 6Wm`Vj(s
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import org.rut.util.algorithm.SortUtil; DeAi'"&
/** BJdH2qREN
* @author treeroot u9:+^F+
* @since 2006-2-2 >brf7h
* @version 1.0 Ev R6^n/
*/ 9<9 c^2
public class InsertSort implements SortUtil.Sort{ Bj ~bsT@a.
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/* (non-Javadoc) <#hltPyh
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ):Vzv
*/ JE<zQf( &
public void sort(int[] data) { 7h3#5Y
int temp; *f? z$46
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Gg\805L@
} BDeX5/`U#
} #s!q(Rc
} q Z,7q
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} epWO}@
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冒泡排序: sUfYEVjr
>|"mhNF
package org.rut.util.algorithm.support; _m
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import org.rut.util.algorithm.SortUtil; L+c7.l.yT
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/** ~1NK@=7T
* @author treeroot 2
f"=f^rf
* @since 2006-2-2 #9{9T"ed
* @version 1.0 9'qU4I
*/ YSvZ7G(m>
public class BubbleSort implements SortUtil.Sort{ '%u7XuU-]
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/* (non-Javadoc) r@2{>j8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ j A 9!
public void sort(int[] data) { UogkQ& B
int temp; =
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for(int i=0;i for(int j=data.length-1;j>i;j--){ V>{G$(v$
if(data[j] SortUtil.swap(data,j,j-1); Bc/'LI.%
} M<A*{@4$w&
} X_7cwPY
} Ag>E%N
} A?DgeSm
fjE
} urlwn*!^s
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选择排序: \WDL?(G<
$Vi[195]2
package org.rut.util.algorithm.support; T,Bu5:@#
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import org.rut.util.algorithm.SortUtil; GJUorj&
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/** !T((d7;
* @author treeroot 4>uy+"8PO
* @since 2006-2-2 6N{Vcfq
* @version 1.0 P <$)v5f
*/ Wz}8O]#/.
public class SelectionSort implements SortUtil.Sort { X}Ey6*D:
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/* aKLA_-E
* (non-Javadoc) dFd^@b
* OX"^a$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vZgV/?'z
*/ _^)Wrf+
public void sort(int[] data) { *Cdw"n
int temp; ,&DK*LT8U
for (int i = 0; i < data.length; i++) { .`iG}j)\
int lowIndex = i; NF}QQwG3
for (int j = data.length - 1; j > i; j--) { P9Gjsu #
if (data[j] < data[lowIndex]) { &B^zu+J
lowIndex = j; "l-L-sc,
} (1
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} N2?o6)
SortUtil.swap(data,i,lowIndex); ~*3obZ2>2
} 3'd(=hJ45$
} ){AtV&{$
pJ` M5pF
} ]x8_f6;D
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Shell排序: Quc,,#u
F:PaVr3q
package org.rut.util.algorithm.support; 7,i}M
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import org.rut.util.algorithm.SortUtil; *V\z]Dy-[
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/** iqzl (9o.D
* @author treeroot vyME
* @since 2006-2-2 oD$8(
* @version 1.0 *K9I+t"g
*/ |ZEZ@y^
public class ShellSort implements SortUtil.Sort{ S$CO T)7
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/* (non-Javadoc) K[wOK
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |x2+O
*/ y_^w|
public void sort(int[] data) { _RLx;Tn)L
for(int i=data.length/2;i>2;i/=2){ E8TJ*ZU
for(int j=0;j insertSort(data,j,i); U
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} yIab3/#`
} i6"/GSA
insertSort(data,0,1); IETdL{`~
} q P<n<
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/** 6^W6As0
* @param data Kn9O=?Xh;
* @param j uS9:cdH
* @param i ~R;9a"nr
*/ AM L8.wJ
private void insertSort(int[] data, int start, int inc) { 16iymiLz&
int temp; !Gv*iWg
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); _(CuuP$`I
} /jR]sC)xs
} i[:S *`@S
} 1E(~x;*)
N30w^W&
} ]r#YU0
g$&uD
快速排序: -hM
nA)+
}E01B_T9z
package org.rut.util.algorithm.support; XA
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import org.rut.util.algorithm.SortUtil; UbBo#(TZ)
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/** qz|`\^
* @author treeroot )+^1QL
* @since 2006-2-2 omxBd#;F$
* @version 1.0 T&?0hSYt
*/ z|Z<S+=f
public class QuickSort implements SortUtil.Sort{ #n= b*.
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/* (non-Javadoc) U'pm5Mc\q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DzZ)aE
*/ ; Nw.
public void sort(int[] data) { -Jo8jE~>V
quickSort(data,0,data.length-1); -IBf;"8f
} ?/mk FDN
private void quickSort(int[] data,int i,int j){ V:M$-6jv
int pivotIndex=(i+j)/2; 'Ii%/ Ob!
file://swap O1/U3/2/d
SortUtil.swap(data,pivotIndex,j); s]=s2.=
+O<0q"E
int k=partition(data,i-1,j,data[j]); !B= Oc!e=K
SortUtil.swap(data,k,j); VS$ZR'OP0
if((k-i)>1) quickSort(data,i,k-1); O|#N$a&_N
if((j-k)>1) quickSort(data,k+1,j); t@GPB]3[
A#s`!SNv
} 8\-Q(9q(
/** IAr
* @param data K^V*JH\G
* @param i {HV$hU+_)Q
* @param j *>Z|!{bI
* @return :n3)vK
*/ m){.{Vn]
private int partition(int[] data, int l, int r,int pivot) { \bt+46y@]
do{ KRS_6G],{
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); `={s*^Ta
SortUtil.swap(data,l,r); zNE"5
} Tct[0B
while(l SortUtil.swap(data,l,r); u$%>/cv
return l; ,`7;S,f
} `aFy2x`3
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} j @c
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改进后的快速排序: 4X2XSK4
SnK j:|bV
package org.rut.util.algorithm.support; {(}Mu R
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import org.rut.util.algorithm.SortUtil; r7tN(2;5
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/** ;H#'9p ,2
* @author treeroot lFWN[`H
* @since 2006-2-2 P) fv:a
* @version 1.0 ^}XKhn.S'
*/ ?Gq'r2V
public class ImprovedQuickSort implements SortUtil.Sort { /o=V
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private static int MAX_STACK_SIZE=4096; 2Wlk]
private static int THRESHOLD=10; 0dKI+zgr
/* (non-Javadoc) kl.)A-6V
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |>(@n{
*/ I*e85wef
public void sort(int[] data) { aq[ ;[$w
int[] stack=new int[MAX_STACK_SIZE]; m1 78S3
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int top=-1; Jji~MiMn
int pivot; dhe?7r]u
int pivotIndex,l,r; X !5
7s%DM6li 6
stack[++top]=0; [Rh[Z #6
stack[++top]=data.length-1; W~GbB:-
9I>+Q&
while(top>0){ Ti/t\'6
int j=stack[top--]; r3o_mO?X
int i=stack[top--]; L&1VPli
(~/VP3.S
pivotIndex=(i+j)/2; NiU}A$U
pivot=data[pivotIndex]; e{edI{g
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SortUtil.swap(data,pivotIndex,j); z`-?5-a]I
+zxj-diM
file://partition u,0N[.&N
l=i-1; 2Mc/ah
r=j; <dx
xXzLT
do{ _//)|.6c3
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); bWv4'Y!p
SortUtil.swap(data,l,r); =z'w-ARy
} DSY:aD!
while(l SortUtil.swap(data,l,r); U^4
/rbQ
SortUtil.swap(data,l,j); mj0{Nd
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if((l-i)>THRESHOLD){ *F+t`<2
stack[++top]=i; QRnkj]b
stack[++top]=l-1; ~je#gVoUR
} JGPLVw
if((j-l)>THRESHOLD){ 3 $;6pY
stack[++top]=l+1; YV*s1t/
stack[++top]=j; BM*9d%m^
} #LlHsY530N
>:M3!6H_~{
} }7CMXw
[
file://new InsertSort().sort(data); .op:
2y9]
insertSort(data); hkw;W[ZWa
} G l+[|?N
/** .$+]N[-=
* @param data ZCi~4&Z#
*/ uhL+bj+W
private void insertSort(int[] data) { E6n3[Z
int temp; kVs'>H@FY
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); =>Y b~r71
} O"4Q=~Y
} ^yUel.N5"
} A87JPX#R?
ryzz!0l
} c0]^V>}cl
c[]_gUp8
归并排序: ; >3q@9\D
5uMh#dm^
package org.rut.util.algorithm.support; v_f8zk
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import org.rut.util.algorithm.SortUtil; _aVrQ@9
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/** _^Lv8a3(O
* @author treeroot ][-N<
* @since 2006-2-2 >*H>'O4
* @version 1.0 }}XYV eI
*/ T^u ][I3*
public class MergeSort implements SortUtil.Sort{ W R@=[G#TJ
UKp- *YukT
/* (non-Javadoc) {]plT~{e
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b:/ ;
*/ {J q[N}
public void sort(int[] data) { T;jp2 #
int[] temp=new int[data.length]; 7''l\3mIn
mergeSort(data,temp,0,data.length-1); kH1hsDe|&y
} ";38vjIV
YQOdwcLG
private void mergeSort(int[] data,int[] temp,int l,int r){ J@Eqqyf"
int mid=(l+r)/2; 98h,VuKVaB
if(l==r) return ; KE:PRX
mergeSort(data,temp,l,mid); T1hr5V<U
mergeSort(data,temp,mid+1,r); /*g3TbUs
for(int i=l;i<=r;i++){ WyVFhAuU
temp=data; Eq^k @
} (Da/$S.
int i1=l; / <WB%O
int i2=mid+1; /]_T
for(int cur=l;cur<=r;cur++){ 1"3|6&=
if(i1==mid+1) ^RytBwzKM
data[cur]=temp[i2++]; Rk.YnA_J6
else if(i2>r) o^;$-O!/
data[cur]=temp[i1++]; 6H67$?jMyJ
else if(temp[i1] data[cur]=temp[i1++]; <jF]SN
else cc7*O
data[cur]=temp[i2++]; yC !`6$
} wXp
A1,i
} IW3ZHmrpA
~n%~ Z|mMF
} xaSvjc\
5bM/
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改进后的归并排序: `,d*>
X=_pQ+j`^
package org.rut.util.algorithm.support; wEENN_w
o9G%KO&;D,
import org.rut.util.algorithm.SortUtil; ,ii*[{X?
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/** c4ptY5R),
* @author treeroot $A"kHS7T
* @since 2006-2-2 KJ<7aZ
* @version 1.0 duB{1
*/ BJ!b LQ
public class ImprovedMergeSort implements SortUtil.Sort { ?|'+5$
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private static final int THRESHOLD = 10; :@)UI,
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/* /e :V44
* (non-Javadoc) D].!u{##
* T:q_1W?h]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~4h<nc
*/ BDSZ '
public void sort(int[] data) { ){`s&? M0
int[] temp=new int[data.length]; Kk1 591'
mergeSort(data,temp,0,data.length-1); HQ~`ha.
} XL@i/5C[
'_,/N!-V
private void mergeSort(int[] data, int[] temp, int l, int r) { O,R5csMh
int i, j, k; R>SS\YC'X
int mid = (l + r) / 2; t!RR5!
if (l == r) >c%OnA,3
return; n 1MZHa,
if ((mid - l) >= THRESHOLD) )=l~XV
mergeSort(data, temp, l, mid); "a))TV%N
else 1oD,E!+^d
insertSort(data, l, mid - l + 1); E8g Xa-hv
if ((r - mid) > THRESHOLD) B*btt+6
mergeSort(data, temp, mid + 1, r); _#@n^c
else k`JP
insertSort(data, mid + 1, r - mid); ntbl0Sk
=!T@'P?
for (i = l; i <= mid; i++) { !E!i`yF
temp = data; DhY.5
} iSu7K&X9q
for (j = 1; j <= r - mid; j++) { w>Iw&US
temp[r - j + 1] = data[j + mid]; W1'F)5(?7
} ,?k[<C
int a = temp[l]; 7S$Am84%
int b = temp[r]; eqbQ,, &
for (i = l, j = r, k = l; k <= r; k++) { 0+MNu8t
if (a < b) { twElLOE
data[k] = temp[i++]; -V0_%Smc
a = temp; eJA$J=^R;
} else { H'k $<S
data[k] = temp[j--]; Y,Dd}an
b = temp[j]; 3qJOE6[}%
} hw! l{yv
} C'&)""3d
} !z">aIj\6
G2
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/** _DsA<SJ]
* @param data YoyJnl.?u
* @param l m ;-FP 2~
* @param i %B?@le+%
*/ >B>[_8=f@
private void insertSort(int[] data, int start, int len) { I?`}h}7.
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); P^V,"B8t
} ;6S,|rC]
} XN9s!5A<L)
} Y~\71QE>
} su;u_rc,
R<.<wQ4I
堆排序: 2%|
Aq'yr,
package org.rut.util.algorithm.support; zh`!x{Z?^
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import org.rut.util.algorithm.SortUtil; m>yb}+
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/** n%'M?o]DF
* @author treeroot TNe,'S,%
* @since 2006-2-2 ZrY#B8
* @version 1.0 p}q27<O*/
*/ $ N`V%<W
public class HeapSort implements SortUtil.Sort{ 9U[Gh97Sf
ldp
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/* (non-Javadoc) ql"&E{u?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gc(Gc vdB\
*/ AGaM
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public void sort(int[] data) { BS3Aczwk
MaxHeap h=new MaxHeap(); ,=sbK?&
h.init(data); mGx!{v~i&
for(int i=0;i h.remove(); \7b-w81M-
System.arraycopy(h.queue,1,data,0,data.length); DUH\/<^g
} ZK:dhwer
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private static class MaxHeap{ $VEG1]/svp
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void init(int[] data){ fP3e{dVf
this.queue=new int[data.length+1]; cs[_TJo
for(int i=0;i queue[++size]=data; EWOS6Yg7
fixUp(size); p7 s#j
} kc*zP=
} )Z6bMAb0'N
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private int size=0; \8j5b+
q5
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private int[] queue; #I>
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public int get() { +*u'vt?
return queue[1]; 590.mCm
} kk|7{83O
fP 1V1ao
public void remove() { vTnrSNdSE
SortUtil.swap(queue,1,size--); (Hk4~v6pqC
fixDown(1); %
mP%W<
} '{]1!yMh
file://fixdown L{`S^'P<
private void fixDown(int k) { 5mzOr4*0
int j; &UzeNL"]
while ((j = k << 1) <= size) { :`u?pc27Sm
if (j < size %26amp;%26amp; queue[j] j++; a=ye!CN^
if (queue[k]>queue[j]) file://不用交换 EQQ/E!N8l
break; b"D? @dGB,
SortUtil.swap(queue,j,k); tG8)!
k = j; Ah^0FU%!g
} ed3d 6/%HR
} ~ZrSoVP=
private void fixUp(int k) { 7D'-^#S5
while (k > 1) { /#mq*kNIM6
int j = k >> 1; .II*wKk
if (queue[j]>queue[k]) {
'A`ram
break; 'iQ
SortUtil.swap(queue,j,k); &d,chb(
k = j; ~nit~;
} `As|MYv
} D$X9xtT
%>,B1nt
} F;
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zzlqj){F
} JFOto,6L:
:TU|;(p
SortUtil: 0*e)_l!
Q1ox<-
package org.rut.util.algorithm; 7RXTQ9BS
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import org.rut.util.algorithm.support.BubbleSort; \VY!= 9EV
import org.rut.util.algorithm.support.HeapSort; n oWjZ
import org.rut.util.algorithm.support.ImprovedMergeSort; /"~ D(bw0=
import org.rut.util.algorithm.support.ImprovedQuickSort; ZtzSG@f
import org.rut.util.algorithm.support.InsertSort; QuF76&)7
import org.rut.util.algorithm.support.MergeSort; Xk2M.:3`
import org.rut.util.algorithm.support.QuickSort; {?2jvv
import org.rut.util.algorithm.support.SelectionSort; N=2BrKb)o
import org.rut.util.algorithm.support.ShellSort; rw CFt6;v
M.DU^-7
/** J#k3iE}
* @author treeroot '(ZJsw
* @since 2006-2-2 ]V*ku%L0
* @version 1.0 z@70{*
*/ 4}i2j
public class SortUtil { SW94(4qo
public final static int INSERT = 1; LwPZR E#
public final static int BUBBLE = 2; fj
14'T
public final static int SELECTION = 3; s,5SWdb\v
public final static int SHELL = 4; (~59}lu~
public final static int QUICK = 5; :S['hBMN
public final static int IMPROVED_QUICK = 6; ioIOyj
public final static int MERGE = 7; Drn{ucIs
public final static int IMPROVED_MERGE = 8; 'A^ ;P]y
public final static int HEAP = 9; tx$i(
O"'.n5>:`
public static void sort(int[] data) {
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sort(data, IMPROVED_QUICK); 8S8^sP
} [{s 1=c
private static String[] name={ 4[\$3t.L
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" / 7i>0J]
}; @M]uUL-ze
$ 12mS
private static Sort[] impl=new Sort[]{ ;Avz%2#c`
new InsertSort(), YwbRzY-#F
new BubbleSort(), d]3c44kkK{
new SelectionSort(), Yg @&@S]
new ShellSort(), ]1 V,_^D
new QuickSort(), {"^LUw8fd
new ImprovedQuickSort(), q+j.)e
new MergeSort(), g]fds Zv
new ImprovedMergeSort(), "ITC P<+
new HeapSort() AD$$S.zoD<
}; |3Fo4K%+
Mz?xvP?z
public static String toString(int algorithm){ fG *1A\t]
return name[algorithm-1]; P4\{be>e
} 4yZ'+\ +I
s!lLdR[g
public static void sort(int[] data, int algorithm) { %NyV2W=~X
impl[algorithm-1].sort(data); 3CKd[=-Z
} @Feusprs
I "8:IF
public static interface Sort { <N4)X"s
public void sort(int[] data); *\-R&