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。 guf+AVPno
插入排序: r5F#q
y6G[-?"/Q
package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; V:IoeQ]-
/** E7j]"\~ i
* @author treeroot |pJ.73
* @since 2006-2-2 |NM.-@1
* @version 1.0 }*+ca>K
*/ z{AfR2L
public class InsertSort implements SortUtil.Sort{ 6:h!gY
KL -8Aj~
/* (non-Javadoc) gE8>5_R|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vO"AJ`_
*/ AoTL)',
public void sort(int[] data) { O-: ~6A
int temp; /S|Pq!4<
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); W]reQ&<Z
} eBBh/=Zc
} 7]
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} B%r)~?6DM
LR`/pet
} aP4r6lLv+
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冒泡排序: WxIP~
P:CwC"z>sS
package org.rut.util.algorithm.support; L18Olu
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import org.rut.util.algorithm.SortUtil; @n})oAC,
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/** G =lC[i
* @author treeroot |n* I}w^
* @since 2006-2-2 b/<n:*$
* @version 1.0 #mtlgK'
*/ -+c_TJ.dC
public class BubbleSort implements SortUtil.Sort{ -vhgBru
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/* (non-Javadoc) Xf$,ra"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kbOo;<X9A
*/ VE{t]>*-u
public void sort(int[] data) { K4oLb"gB1
int temp; 79S=n,O
for(int i=0;i for(int j=data.length-1;j>i;j--){ ]Ub?Wo7F?
if(data[j] SortUtil.swap(data,j,j-1); w'cZ\<N[
} |%TH|?kB
} 2uqdx'^"
} H%sbf&
gi
} ~Edm VEu
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} +}*]9nG
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选择排序: $g#%
Soq
'B?>
package org.rut.util.algorithm.support; oSTGs@EK
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import org.rut.util.algorithm.SortUtil; @XB/9!
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/** vE&
* @author treeroot +vZ-o{}.jO
* @since 2006-2-2 -_A0<A .
* @version 1.0 N<O^%!bu R
*/ *Q5/d9B8TN
public class SelectionSort implements SortUtil.Sort { l"O=x t`m{
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/* 'N'EC`R
* (non-Javadoc) Z?1.Y7Npr
* MheP@ [w|@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8]+hfB/
*/ 8+
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public void sort(int[] data) { 'rU5VrK
int temp; h.G/HHz
for (int i = 0; i < data.length; i++) { oXb}6YC
int lowIndex = i; [% YCupr#
for (int j = data.length - 1; j > i; j--) { o^5xCK:Oi2
if (data[j] < data[lowIndex]) { d94Lc-kq^
lowIndex = j; 72luTR Q
} 6?(*:}Q
} }&EPH}V2n
SortUtil.swap(data,i,lowIndex); CA:t](xqQ
} }6ec2I%`o
} keCM}V`?"
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} 6fQQKM@a|
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Shell排序: 7e>n{rl
r!j_KiUy
package org.rut.util.algorithm.support; :C>slxY
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import org.rut.util.algorithm.SortUtil; 1^Ci$ra
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/** Z*x Q"+\
* @author treeroot i>>_S&!9p
* @since 2006-2-2 p\F*Y,4
* @version 1.0 :/d#U:I
*/ -bcm"(<T'
public class ShellSort implements SortUtil.Sort{ >*k3D&
yv]/A<gP+
/* (non-Javadoc) } n_9d.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qp'HRh@P2:
*/ zTm&m#){3A
public void sort(int[] data) { ocGqXDg3
for(int i=data.length/2;i>2;i/=2){ I`zn#U'
for(int j=0;j insertSort(data,j,i); 57D /"
} %A:<rO85o
} exZa:9 sp
insertSort(data,0,1); +-K-CXt
} YG!~v~sV
4GeWo@8h
/** ;1K.SDj
* @param data x4R[Q&:M
* @param j U
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* @param i )Q&:$]
*/ 0P&rTtU6
private void insertSort(int[] data, int start, int inc) { Z[Uz~W6M]
int temp; 0ir]
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); mp>,TOi~s7
} qAHQZKk
} 3|l+&LF!IC
} T"XZ[q
$x#Y\dpS
} Ry r2
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快速排序: g]N!_Ib/!
Z2j
M.[hq
package org.rut.util.algorithm.support; M7BJ$fA0E
Nz\=M|@(#
import org.rut.util.algorithm.SortUtil; gb(a`
9}:%CpD^~I
/** +*mi%)I
* @author treeroot N>xs@_"o
* @since 2006-2-2 ENr\+{{%
* @version 1.0 -Wb/3X
*/ fu"#C}{
public class QuickSort implements SortUtil.Sort{ q%2cx@c
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/* (non-Javadoc) Mx4
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Myg
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*/ hL+)XJu^J
public void sort(int[] data) { bb}|"m.
quickSort(data,0,data.length-1); :l'61$=
} ,n-M!y
private void quickSort(int[] data,int i,int j){ v#8{pr
int pivotIndex=(i+j)/2; ofC=S$wX
file://swap )t0Y-),vA
SortUtil.swap(data,pivotIndex,j); H?m9HBDpn
~$Xz~#~
int k=partition(data,i-1,j,data[j]); XcAx@CY9c
SortUtil.swap(data,k,j); *G7/
if((k-i)>1) quickSort(data,i,k-1); )!s f@F?
if((j-k)>1) quickSort(data,k+1,j); iLIH |P%
JS1$l+1
} U\*}}
/** ,73J#
* @param data s9>-Q"(y
* @param i
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* @param j LK-2e$1
* @return G\@uj>Z
*/ <]2X~+v
private int partition(int[] data, int l, int r,int pivot) { < HlS0J9
do{ lc?9B
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 7y""#-}V[r
SortUtil.swap(data,l,r); )! Jo7SR
} yM`J+tq
while(l SortUtil.swap(data,l,r); ]4^9Tw6
_b
return l; ds}: t.3}6
} S8(Y+jgk;a
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} ('hr;s=
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改进后的快速排序: p%/Z
LZG?M|(6D
package org.rut.util.algorithm.support; 3MPmLV#f
k)U9%Pr
import org.rut.util.algorithm.SortUtil; V^sZXdDNL
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/** P-[6'mw`
* @author treeroot "j#;MOK
* @since 2006-2-2 j*B,b4
* @version 1.0 4! ]28[2B6
*/ ixm-wZI
public class ImprovedQuickSort implements SortUtil.Sort { }TI"j{(QJ
j>Ce06G
private static int MAX_STACK_SIZE=4096; )zzZYs&|
private static int THRESHOLD=10; 2uujA*
^
/* (non-Javadoc) [Q9#44@{S;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >c
%*:a
*/ qS1byqq78l
public void sort(int[] data) { 'M8wjU
int[] stack=new int[MAX_STACK_SIZE]; xn|M]E1)
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int top=-1; VJviX[V?4
int pivot; 0'j/ 9vm
int pivotIndex,l,r; m?G@#[
l
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stack[++top]=0; YGFE(t;lPU
stack[++top]=data.length-1; Wwo'pke
>|Yr14?7
while(top>0){ xvn@zi
int j=stack[top--]; j]Y`L?!Q
int i=stack[top--]; !:"$1kh1("
WD.td
pivotIndex=(i+j)/2; 4}-{sS}MP
pivot=data[pivotIndex]; +||y/}1
jRdmQmTJ
SortUtil.swap(data,pivotIndex,j); *f<+yF{=A
.S4c<pMap
file://partition r I)Y
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l=i-1; .xG3`YH
r=j; t*J*?Ma
do{ XLQt>y)
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); mcO/V-\5'
SortUtil.swap(data,l,r); p6P .I8g
} X^Dklqqy
while(l SortUtil.swap(data,l,r); /<zBjvr%%
SortUtil.swap(data,l,j); eI99itDQ
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if((l-i)>THRESHOLD){ iR(=<>
stack[++top]=i; :qlcN @_
stack[++top]=l-1; <KB V
} wN}@%D-[v
if((j-l)>THRESHOLD){ lJlyfN
stack[++top]=l+1; }[2
stack[++top]=j; %#
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} LKC^Y)6o
$?`-} wY
} q%&JAX=
file://new InsertSort().sort(data); 'tyblj C
insertSort(data); d-k`DJ!
} 9feVy\u
/** QT`|"RI%
* @param data ~|CWy
*/ LeP;HP|
private void insertSort(int[] data) { =Pj+^+UM
int temp; |-+ IF,j
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 9pF@#A9p
} <?8aM7W7
} z.d1>w
} YL[n85l>1
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v8
} *.F^`]yz
1 >}x9D
归并排序: XWd;-%`<
STln_'DF'
package org.rut.util.algorithm.support; Ij w{g%
@*>kOZ(3
import org.rut.util.algorithm.SortUtil; |!Ryl}Oi
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/** vIzREu|5
* @author treeroot esh7*,7-z*
* @since 2006-2-2 Gn?NY}.S
* @version 1.0 rm}%C(C{J
*/ Fi!BXngbd
public class MergeSort implements SortUtil.Sort{ 'GyO
PAYS~MnV@3
/* (non-Javadoc) ctk~}(1#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uT :Yh6
*/ (i 2R1HCa
public void sort(int[] data) { uE'O}Y95
int[] temp=new int[data.length]; b@s6jNhVO^
mergeSort(data,temp,0,data.length-1); ./l^Iz&0
} AX{X:L8Ut2
f\+ E&p.
private void mergeSort(int[] data,int[] temp,int l,int r){ f$y`tT %o
int mid=(l+r)/2; 70Z#Ej
if(l==r) return ; /BN_K8nb`
mergeSort(data,temp,l,mid); `>1XL 2
mergeSort(data,temp,mid+1,r); \img
for(int i=l;i<=r;i++){ Ga$ J7R
temp=data; NB^+Hcb$
} ojva~mnFf
int i1=l; 4>t'4p6{
int i2=mid+1; on^m2pQ
*p
for(int cur=l;cur<=r;cur++){ Q# Yba
if(i1==mid+1) aTWCX${~b
data[cur]=temp[i2++]; w!kWG,{C
else if(i2>r) '73g~T%$^*
data[cur]=temp[i1++]; 'X%5i2
else if(temp[i1] data[cur]=temp[i1++]; ,%=SO 82W
else z?3t^UPW
data[cur]=temp[i2++]; :HiAjaA1pg
} 9\ulS2d
} 14DHU
5Q$.q&,
} T9'd?nw9
2j =i\ B
改进后的归并排序: ]_5qME#N
"ZYdJHM
package org.rut.util.algorithm.support; ~NV 8avZ
*Ei(BrL/;
import org.rut.util.algorithm.SortUtil; o'?[6B>oj
m%s&$
/** h<0&|s*a)
* @author treeroot 4roqD;5|~|
* @since 2006-2-2 iwVsq_[]L
* @version 1.0 FL|\D
*/ MW|*Z{6*
public class ImprovedMergeSort implements SortUtil.Sort { $p;<1+!
:3N&&]
private static final int THRESHOLD = 10; AY x*Ngn
P]^BE;7T
/* }nx5
* (non-Javadoc) 1Qk]?R/DN
* $o%:ST4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;R[w}#Sm
*/ Z<IN>:l
public void sort(int[] data) { ]#sF
pWI[N
int[] temp=new int[data.length]; pNnZ-R|u
mergeSort(data,temp,0,data.length-1); )45#lE3TH
} MBn ZO
;@<Rh^g]
private void mergeSort(int[] data, int[] temp, int l, int r) { rNN,!
int i, j, k; 3YO%$
int mid = (l + r) / 2; H.)Y*zK0.
if (l == r) ;O~k{5.iS
return; T
B(K&3_D
if ((mid - l) >= THRESHOLD) dJ(<zz+;b
mergeSort(data, temp, l, mid); ]8+ D
else <L'6CBbP
insertSort(data, l, mid - l + 1); X#Sgf|$
if ((r - mid) > THRESHOLD) IY"+hHt
mergeSort(data, temp, mid + 1, r); |>zYUT[V
else 80GBkFjV
insertSort(data, mid + 1, r - mid); M*
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i9+qU
for (i = l; i <= mid; i++) { <ebC]2j8cK
temp = data; *Roqie
} UC@Jsj~f
for (j = 1; j <= r - mid; j++) { Z{}+7P
temp[r - j + 1] = data[j + mid]; fNk0&M
} ;k:17&:8ue
int a = temp[l]; y2M]z:Y U
int b = temp[r]; K41Gn
for (i = l, j = r, k = l; k <= r; k++) { aoHAB<.C
if (a < b) { y!M# #K*
data[k] = temp[i++]; OPuty/^!Gw
a = temp; S;K5JBX0#
} else { ua!43Bp
data[k] = temp[j--]; nKnQ%R
b = temp[j]; SVn $!t
} %7hf6Xo=
} ,<s/K
} (yK@(euG
Am@:<J
/** d+WNg2#v
* @param data [x{Ai(
/T^
* @param l g#%Egb1
* @param i Tf40lv+{
*/ 6an= C_Mb`
private void insertSort(int[] data, int start, int len) { 6]|-%
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); z'&tmje[?
} U1;&G
} z7_h$v
} \C<'2KZR,
} {|B
2$1':
S|
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堆排序: 0[ZB ^
j8)rz
package org.rut.util.algorithm.support; xnOd$]
aQ*?L
l
import org.rut.util.algorithm.SortUtil; | Di7,$c
y>>)Yo&|
/** *cP(3n3]R
* @author treeroot P%aNbMg
* @since 2006-2-2 ?*^HZ~O1
* @version 1.0 37b6w6{D
*/ 5t,X;
public class HeapSort implements SortUtil.Sort{ VDFs.;:s
WBWIHv{j
/* (non-Javadoc) 8?hZ5QvA(j
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _0|@B8!J?
*/ 4^Og9}bm
public void sort(int[] data) { Z+Cjg#+
MaxHeap h=new MaxHeap(); _BoYyJQH
h.init(data); z?n6l7sH
for(int i=0;i h.remove(); pIHpjx
System.arraycopy(h.queue,1,data,0,data.length); ` >loleI
} _>J`e7j+
l5nm.i<M
private static class MaxHeap{ a+^,EY
ws<pBC,m
void init(int[] data){ }g&
KT!r
this.queue=new int[data.length+1]; BtrMv6
for(int i=0;i queue[++size]=data; eD|"?@cE
fixUp(size); O%f{\Fr
} f#McTC3C
} yqC158 P
2^%O%Pc
private int size=0; qpjiQ,\:b
,3
[FD9
private int[] queue; +4+czfz
RI<&cgWn+<
public int get() { ?pWda<&
return queue[1]; s"5nfl
} V4&a+MJ@
1)3'Y2N*
public void remove() { nErr &{C
SortUtil.swap(queue,1,size--); w"O{@2B3:H
fixDown(1); -jzoGzC3
} y;%\w-.\
file://fixdown biZ=TI2P,L
private void fixDown(int k) { D!8v$(#hR
int j; C`-CfZZ
while ((j = k << 1) <= size) { Nza@6nI"
if (j < size %26amp;%26amp; queue[j] j++; oIniy{
if (queue[k]>queue[j]) file://不用交换 6n|][! f
break; _S,UpR~2W
SortUtil.swap(queue,j,k); [_`@V4
k = j; k;K-6<^h
} 0+k..l
} +R7pdi
private void fixUp(int k) { BSL+Gjj~}
while (k > 1) { Fkg%_v$
int j = k >> 1; B.!&z-)#
if (queue[j]>queue[k]) c
D.;
break; X3][C
SortUtil.swap(queue,j,k); 9e4`N"#,lI
k = j; s@E)=;!
} nvA7eTO6C
} L
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2D a0*xn{
} [dXa,
BY9Z}/{j
} DXFDs=u
r?w>x`
SortUtil: jxZf,]>T
Dk&(QajL
package org.rut.util.algorithm; ~pHuh#>
j{johV+`8
import org.rut.util.algorithm.support.BubbleSort; %<r}V<OeR
import org.rut.util.algorithm.support.HeapSort; <m0=bm{j
import org.rut.util.algorithm.support.ImprovedMergeSort; E@6gTx*
import org.rut.util.algorithm.support.ImprovedQuickSort; a|(|!=
import org.rut.util.algorithm.support.InsertSort; 5A^8?,F@
import org.rut.util.algorithm.support.MergeSort; $inKI
import org.rut.util.algorithm.support.QuickSort; j\NCoos
import org.rut.util.algorithm.support.SelectionSort; B)/c]"@89
import org.rut.util.algorithm.support.ShellSort; Mf !S'\
f@q.kD21
/** i'10qWz
* @author treeroot Hy -)yR
* @since 2006-2-2 138v{Z
* @version 1.0 I_e7rE0`
*/ s IBP$9
public class SortUtil { 76]Z~^Y
public final static int INSERT = 1; !E|R3eX_
public final static int BUBBLE = 2; A'Z!l20_
public final static int SELECTION = 3; k2fJ
public final static int SHELL = 4; gvPHB+#A
public final static int QUICK = 5; (N/-blto
public final static int IMPROVED_QUICK = 6; x iz+R9p
public final static int MERGE = 7; pju*i6z
public final static int IMPROVED_MERGE = 8; RCi8{~rIvS
public final static int HEAP = 9; 4"\x#
@BPQ >
public static void sort(int[] data) { C(UWir3mW?
sort(data, IMPROVED_QUICK); !Pt4\
} @4KKm@(p85
private static String[] name={ w
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"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" qu!x#OY+
}; X]n`YF7
KS1udH^Zc
private static Sort[] impl=new Sort[]{ n2:Uu>/
new InsertSort(), HR?bnkv|id
new BubbleSort(), {U@"]{3Qx
new SelectionSort(), ,\i,2<hz.
new ShellSort(), K9Onjs%U
new QuickSort(), SL`; `//
new ImprovedQuickSort(), }_-tJ.
new MergeSort(), X"mPRnE330
new ImprovedMergeSort(), +Z-{6C
new HeapSort() X-Ev>3H
}; :fnJp9c
%Pl |3 i
public static String toString(int algorithm){ AZ4:3}
return name[algorithm-1]; ,9"du
} Z15=vsV
5q'b
M
public static void sort(int[] data, int algorithm) { 0M)\([W9&
impl[algorithm-1].sort(data); etUfdZ
} TXT<6(
ic3Szd^4
public static interface Sort { 2}bXX'Y
public void sort(int[] data); w`r%_o-I
} g/WDAO?d
ZoYllk
public static void swap(int[] data, int i, int j) { u~VXe
int temp = data; MmU`i ,z
data = data[j]; WnU2.:
data[j] = temp; qrjSG%i~J7
}
j=G
} Fe+(+ S