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。 o9uir"=
插入排序: Qz/1^xy
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package org.rut.util.algorithm.support; 0CRk&_ht
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import org.rut.util.algorithm.SortUtil; S4BU !
/** Nb@zn0A(;
* @author treeroot %QrpFE5V5
* @since 2006-2-2 >R}p*=J
* @version 1.0 9q!./)
*/ xBi``x2eY
public class InsertSort implements SortUtil.Sort{ ]pP [0S
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/* (non-Javadoc) Gfn?1Kt{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )s4a<Sc]
*/ z gDc=
public void sort(int[] data) { seo.1.Da2
int temp; }~`l!ApD
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Rck k
} )X-/0G=N-
} Yn }Ivg
} 'VTLp.~G~
rfS kQT
} 73OYHp_j
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冒泡排序: uKocEWB=/F
H '(Ky
package org.rut.util.algorithm.support; Bys _8x}
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import org.rut.util.algorithm.SortUtil; CERT`W%o
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/** !q_fcd^c
* @author treeroot 3fWL}]{<a
* @since 2006-2-2 h\i>4^]X.
* @version 1.0 jh&WL
*/ 4w5mn6 MxR
public class BubbleSort implements SortUtil.Sort{ KnuQ5\y
i'bUX=JK
/* (non-Javadoc) 9n#Em
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K-b'jP\
*/ xK3}zN$T
public void sort(int[] data) { ,HLgb}~
int temp; z(&~O;;N#
for(int i=0;i for(int j=data.length-1;j>i;j--){ I,xV&j+<
if(data[j] SortUtil.swap(data,j,j-1); 2E":6:Wsw
} m@){@i2.
} <ny)yK
} eDPmUlC+-
} Gv3AJ'NL
+kK6G#c
} 5<y pK`Kq
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选择排序: !DUC#)F
Hs~u&c
package org.rut.util.algorithm.support; NXw$PM|+R
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import org.rut.util.algorithm.SortUtil; E}WO?xxv74
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/** h!L6NS_Q,
* @author treeroot zU)Ib<$
* @since 2006-2-2 4D-4BxN*
* @version 1.0 *U=%W4?W
*/ ~Z#jIG<?g
public class SelectionSort implements SortUtil.Sort { g/ict2!
9cm9;
/* D8''q%
* (non-Javadoc) V
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* M@/Hd0$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (;@\gRL
*/ E5J2=xVW#
public void sort(int[] data) { 8XUm.nV
int temp; N=oWIK<;-
for (int i = 0; i < data.length; i++) { `:I<Jp
int lowIndex = i; (yx9ox@rL
for (int j = data.length - 1; j > i; j--) { |NZVm}T
if (data[j] < data[lowIndex]) { \Y{^Q7!>:8
lowIndex = j; &m>sGCZ
} ?$#,h30
} (7qdrAeP
SortUtil.swap(data,i,lowIndex); #K3`$^0 s
} >$yqx1=jW
} f2y:K6$'l*
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} U<*8KiI
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Shell排序: Tl9;KE|
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package org.rut.util.algorithm.support; 6HW8mXQh<h
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import org.rut.util.algorithm.SortUtil; ]8qFxJ+2^
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/** hZobFf
* @author treeroot &7 YTz3aj
* @since 2006-2-2 W_E0+
* @version 1.0
{|kEGq~aE
*/ _8U
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public class ShellSort implements SortUtil.Sort{ pUz;e#J|
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/* (non-Javadoc) ^atX/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h8Bs=T
*/ !A\Qwg>
public void sort(int[] data) { !Deg!f\g
for(int i=data.length/2;i>2;i/=2){ }op0`-Xb
for(int j=0;j insertSort(data,j,i);
}?
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} tC,R^${#
} fgW>U*.ar
insertSort(data,0,1); uP-I7l0i1
} v{Rj,Ou
/Y>$w$S
/** J^J$I!
* @param data U;7Cmti"
* @param j M%evk4_27
* @param i ]R$
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*/ %` cP|k
private void insertSort(int[] data, int start, int inc) { GYX/G>-r
int temp; mct$.{~
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 'TF5CNX
} 7( &\)qf=n
} !`rR;5&sT
} E8Jy!8/X9T
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} QD6in>+B@
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快速排序: |Mj2lZS
R3;,EL{H&
package org.rut.util.algorithm.support; J m5).
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import org.rut.util.algorithm.SortUtil; =q%Q^
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/** %V +hm5Q
* @author treeroot 0.9%m7.m
* @since 2006-2-2 i58&o@.H<u
* @version 1.0 VuOZZ7y
*/ F.s*^}L[
public class QuickSort implements SortUtil.Sort{ t4RI%m\
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/* (non-Javadoc) KkIxtFM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TJHab;7F
*/ (^:0g.~c
public void sort(int[] data) { ,[
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quickSort(data,0,data.length-1); w&vZ$n-|
} BP& T|s
private void quickSort(int[] data,int i,int j){ ]5V=kNui
int pivotIndex=(i+j)/2; [p+]H?(A
file://swap [IF5Iv\b
SortUtil.swap(data,pivotIndex,j); =V- ^
5d7AE^SHsH
int k=partition(data,i-1,j,data[j]); V!Px975P
SortUtil.swap(data,k,j); -A?6)ggf.
if((k-i)>1) quickSort(data,i,k-1); *?2aIz"
if((j-k)>1) quickSort(data,k+1,j); &DX&*Xq2
\i*QKV<
} K/Q%tr1W0
/** y_>l'{w3^
* @param data jvI!BZ
* @param i M@k8;_5
* @param j l@
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* @return m#\I&(l+
*/ [9wuaw"~[Z
private int partition(int[] data, int l, int r,int pivot) { )Vn(J#s
do{ }de{-
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Yq6e=?-
SortUtil.swap(data,l,r); <sALA~p|0
} 1Mf tq4nq
while(l SortUtil.swap(data,l,r); A#yZh\#
return l; |6cz r
} fEdp^oVg
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} +b =X~>vZ
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改进后的快速排序: =bx;TV
TpB4VNi/<
package org.rut.util.algorithm.support; 6aw1
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import org.rut.util.algorithm.SortUtil; `b11,lg
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/** Jv,*rQH
* @author treeroot ftr8~*]O
* @since 2006-2-2 9+"R}Nxv^
* @version 1.0 ~`xaBz0q
*/
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public class ImprovedQuickSort implements SortUtil.Sort { ]^e4coC
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private static int MAX_STACK_SIZE=4096; o*fNY
private static int THRESHOLD=10; n(}W[bZ4
/* (non-Javadoc) DOsQVdH
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T{A_]2
G
*/ agbG) t0
public void sort(int[] data) { aUGRFK_6$
int[] stack=new int[MAX_STACK_SIZE]; E*sQ|" g
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int top=-1; 0r=KY@D
int pivot; 'l sG?
int pivotIndex,l,r; 4N!Eqw
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stack[++top]=0; LLMom.
stack[++top]=data.length-1; !kTI@103Wd
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while(top>0){ 8]`LRzM
int j=stack[top--]; ?2q;`Nb
int i=stack[top--]; PnUYL.v
!_No\O
pivotIndex=(i+j)/2; R0WI s:k2
pivot=data[pivotIndex]; )S8 fFV
l_ES$%d
SortUtil.swap(data,pivotIndex,j); 1ti9FQ
2C@ui728
file://partition !.EDQ1k
l=i-1; [z2jR(+`U
r=j; x%Fy1.
do{ pX/42W
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); )y .1}R2[
SortUtil.swap(data,l,r); 7m<;"e)
} tO@n3"O
while(l SortUtil.swap(data,l,r); ?V{APM$x
SortUtil.swap(data,l,j); Dcep^8'
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if((l-i)>THRESHOLD){ ,S%DHT
stack[++top]=i; vNA~EV02
stack[++top]=l-1; EOn[!
} Pf,lZU?f
if((j-l)>THRESHOLD){ ]\.3<^
stack[++top]=l+1; 3G.-JLhs
stack[++top]=j; k-;A9!^h
} f]*TIYicc
eyIbjgpV
} KE_GC ;bQ
file://new InsertSort().sort(data); -Wt(t2
insertSort(data); ?xT ^9
} sN8)p%'Lg
/** >T)#KQ1t
* @param data ol7^T
*/ VGVb3@
private void insertSort(int[] data) { ImG7E
w
int temp; jgyXb5GY
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); B.oD9 <9
} y.6Yl**l
} rHMr8,J;
} l2S1?*
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} P'Gf7sQt7
Q2 S!}A
归并排序: ?kBX:(g
B=;pwX
package org.rut.util.algorithm.support; 7xlarns
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import org.rut.util.algorithm.SortUtil; Yo^9Y@WDW
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/** LPRvzlY=
* @author treeroot R/|2s
* @since 2006-2-2 +p\+15
* @version 1.0 DQ{"6-
*/ @krh <T6|
public class MergeSort implements SortUtil.Sort{ U'Mxf'q
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/* (non-Javadoc) xfFsW^w
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "~nUwW|=1
*/ d"#& VlKcv
public void sort(int[] data) { SU$%nK )
int[] temp=new int[data.length]; 7W7yjG3g
mergeSort(data,temp,0,data.length-1); z<~yns`Y.
} 7&>==|gt
Tz<@k
private void mergeSort(int[] data,int[] temp,int l,int r){ '#ow9w+^
int mid=(l+r)/2; -n#fj;.2_
if(l==r) return ; 1<n'F
H3
mergeSort(data,temp,l,mid); j3$\+<m]
mergeSort(data,temp,mid+1,r); }n;.E&<[
for(int i=l;i<=r;i++){ Pg%k>~i
temp=data; 3$#=*Zp
} loByT
p
^
int i1=l; .Z#8,<+
int i2=mid+1; yM`QVO!;
for(int cur=l;cur<=r;cur++){ -S6^D/(;
if(i1==mid+1) 0\DlzIO
data[cur]=temp[i2++]; 37U$9]
else if(i2>r) .EXxNB]%Y&
data[cur]=temp[i1++]; "(NJ{J#A
else if(temp[i1] data[cur]=temp[i1++]; <)4>"SN&^
else *3s,~<''%
data[cur]=temp[i2++]; Cz)/Bq
} ll#_v^
} h#?)H7ft
G$7!/O%#_
} 5y8ajae:
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改进后的归并排序: gg+!e#-X
DMpNmF>
package org.rut.util.algorithm.support; FXO{i:Zo
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import org.rut.util.algorithm.SortUtil; t}m"rMbt
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/** wVac6q
* @author treeroot QKt+Orz
* @since 2006-2-2 =Dc9|WuHN
* @version 1.0 C[2LP$6*/
*/ 1yT\|2ARZ%
public class ImprovedMergeSort implements SortUtil.Sort { I>n2# -8
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private static final int THRESHOLD = 10; hY}.2
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/* s{@3G8
* (non-Javadoc) ^^+vt8|
* =CGB}qU l0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) em,j>qp
*/ n\'@]qG)Z4
public void sort(int[] data) { whb,2=gIE
int[] temp=new int[data.length]; csCi0'u
mergeSort(data,temp,0,data.length-1); .~jn
N
} p5?8E$VHV
r]yI5 ;
private void mergeSort(int[] data, int[] temp, int l, int r) { 6eq`/~#
int i, j, k; z>9gt
int mid = (l + r) / 2; jQRl-[n
if (l == r) NoD\t(@h
return; ;{S7bH'6m
if ((mid - l) >= THRESHOLD) m[E#$JZtG
mergeSort(data, temp, l, mid); jdW#;
]7+y
else yr,Oq~e
insertSort(data, l, mid - l + 1); \rPT7\ZA
if ((r - mid) > THRESHOLD) _^Yav.A=
mergeSort(data, temp, mid + 1, r); y -
Ge"mY
else vm4q1!!(
insertSort(data, mid + 1, r - mid); \h UE,^
; w+<yW}EL
for (i = l; i <= mid; i++) { ^eHf'^Cvvu
temp = data; S1G=hgF_L
} OYwH$5
for (j = 1; j <= r - mid; j++) { ns;nle|m
temp[r - j + 1] = data[j + mid]; IP-}J$$1
} jSMs<ox
int a = temp[l]; [X=J]e^D
int b = temp[r]; @ 9q/jv`
for (i = l, j = r, k = l; k <= r; k++) { q@8j[15
if (a < b) { Yt#e[CYnu
data[k] = temp[i++]; 81&5g'
a = temp; r5(-c]E7
} else { [2Rw)!N
data[k] = temp[j--]; xGVL|/?8
b = temp[j]; ^ Z~'>J
} [/Ya4=C@
} _?J:Z*z?
} oMer+=vH
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/** Sh2;^6d
* @param data J2P5<
* @param l bWOn`#+&
* @param i E])X$:P?
*/ WTZr{)e
private void insertSort(int[] data, int start, int len) { }2i3
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); N,Ys}qP
} "H!2{l{
} o;<oXv
} MF%>avRj
} wD'LX
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堆排序: 6yRxb(
W$_@9W(Bl
package org.rut.util.algorithm.support; Tx!c}
i[x;k;m2q
import org.rut.util.algorithm.SortUtil; i~04 P
km+}./@
/** Ls~F4ar$/
* @author treeroot EPMdR66
* @since 2006-2-2 oN/T>&d
* @version 1.0 8E9W\@\
*/ 2(Ez
H
public class HeapSort implements SortUtil.Sort{ \JX.)&>
-
I_/kJ#7vj
/* (non-Javadoc) 3[E)/~-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) // \UthOT
*/ &:ib>EB03=
public void sort(int[] data) { |Y42ZOK0
MaxHeap h=new MaxHeap(); #H1ng<QV
h.init(data); %`Q<_LTU
for(int i=0;i h.remove(); -A A='s
System.arraycopy(h.queue,1,data,0,data.length); Axtf,x+lH
} ,0=@cJ
m+Bt9|d
private static class MaxHeap{ gbJz5EEq
}\oy?_8~
void init(int[] data){ {V)Z!D
this.queue=new int[data.length+1]; ctg[C$<q|
for(int i=0;i queue[++size]=data; pdQ6/vh
fixUp(size); 3#@ETt0X(
} &bO0Rn1F
} xo46L\
nS}XY
private int size=0; HBc^[fJ^-
8}0O @ wq
private int[] queue; aykNH>#Po
m+J3t@$
public int get() { 8>sToNRNe
return queue[1]; BEv>?T
0
} 8yDu(.Q
1Lf:TQB
public void remove() { =os%22*
SortUtil.swap(queue,1,size--); UEvRK?mm=
fixDown(1); 9V%s1@K
} Ba],ONM4k
file://fixdown *CH lg1
private void fixDown(int k) { <Eo;CaaF/
int j; _e;$Y#`EO
while ((j = k << 1) <= size) { z$d/Vz,a
if (j < size %26amp;%26amp; queue[j] j++; ,\FJVS;NeJ
if (queue[k]>queue[j]) file://不用交换 B0^0d*8t|@
break; B0KZdBRx}
SortUtil.swap(queue,j,k); mt+IB4`
k = j; 0O,l
rF0 '
} 4ZK8Y[]Lv
} wM;9plYlw0
private void fixUp(int k) { 7O)U(<70
while (k > 1) { 5$e|@/(0
int j = k >> 1; s C9j73vf
if (queue[j]>queue[k]) .cQ<F4)!tu
break; [Pu~kiN
SortUtil.swap(queue,j,k); H?P:;1A]c
k = j; CjtXU=}A
} /8GgEW9Q~G
} IR+dGqIjZb
>!OD[9
} XZv(B^
~7W?W<
} IQS:tL/
T>&d/$;]
SortUtil: wnL\.%Y^
0wLu*K5$4E
package org.rut.util.algorithm; d (Fb_
?dukK3u
import org.rut.util.algorithm.support.BubbleSort; TvE M{
import org.rut.util.algorithm.support.HeapSort; >C`b4xQ
import org.rut.util.algorithm.support.ImprovedMergeSort; 1A4!zqT;
import org.rut.util.algorithm.support.ImprovedQuickSort; XF{ g~M
import org.rut.util.algorithm.support.InsertSort; Xz'pZ*Hr$v
import org.rut.util.algorithm.support.MergeSort; ?Mg&e/^
import org.rut.util.algorithm.support.QuickSort; ()Z! u%j
import org.rut.util.algorithm.support.SelectionSort; J>YwMl
import org.rut.util.algorithm.support.ShellSort; !79^M
wjF/c
/** h7NS9CgO
* @author treeroot jB*%nB*x
* @since 2006-2-2 ZkW,
* @version 1.0 ^G+1nY4?J
*/ x?:[:Hf
public class SortUtil { }jM&GH1
public final static int INSERT = 1; /#z5bo
public final static int BUBBLE = 2; G SXe=?
public final static int SELECTION = 3; /RuGh8qzP
public final static int SHELL = 4; iK$)Iy0
public final static int QUICK = 5; 'b#`8k~>
public final static int IMPROVED_QUICK = 6; ysV0Ed
public final static int MERGE = 7; &+\J "V8
public final static int IMPROVED_MERGE = 8; yVvO!
public final static int HEAP = 9; [a;U'v*
J~6+zBF
public static void sort(int[] data) { OAMsqeWYA
sort(data, IMPROVED_QUICK); + RX{
} TKpka]nJ
private static String[] name={ njveZav
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" r^mP'#
}; A@BYd'}]
)oJn@82C|
private static Sort[] impl=new Sort[]{ L'LZK
new InsertSort(), $9DV}
new BubbleSort(), sv0)sL
new SelectionSort(), c(.2D
new ShellSort(), wRn]
new QuickSort(), [];*9vxW
new ImprovedQuickSort(), ab!,)^
new MergeSort(), ?GPTJ#=j=]
new ImprovedMergeSort(), CpuL[|51
new HeapSort() t<M^ /xe2
}; V,<3uQD9a
#1i&!et&/
public static String toString(int algorithm){
C9[Jr)QX
return name[algorithm-1]; Xm./XC
} PG<tic<?
[R[]&\W
public static void sort(int[] data, int algorithm) { -t_t3aU|
impl[algorithm-1].sort(data); Ah,X?0+
} GsG.9nd
!rzbm&@
public static interface Sort { 79|=y7i#
public void sort(int[] data); :c@v_J6C&
} rmS.$h@7 m
n`Pwo&
public static void swap(int[] data, int i, int j) { HV-c
DL
int temp = data; =*7K_M&
data = data[j]; {<{
O!
data[j] = temp; !63p?Q=
} 7U>Xi'?
} tLXwszR0r