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。 s5
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插入排序: ^"#rDP"v
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package org.rut.util.algorithm.support; NKh{iSLm
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import org.rut.util.algorithm.SortUtil; bHT@]`@@
/** c\ *OId1{;
* @author treeroot swgBPJ"?
* @since 2006-2-2 {!?RG\EYN
* @version 1.0 pNWp3+a'
*/ IbaL.t\>
public class InsertSort implements SortUtil.Sort{ Z|GkM5QH:
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/* (non-Javadoc) 0e](N`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dct#ECT
*/ E.bbIV6mQ
public void sort(int[] data) { */e5lRO\
int temp; R51!j>[fqM
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); N9|.D.#MF
} Bx!` UdRn
} ABDUp:
} [1MEA;
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} ?7ZlX?D[
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冒泡排序: Czxrn2p/
cY]Y8T)
package org.rut.util.algorithm.support; <~*Ol+/
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import org.rut.util.algorithm.SortUtil; kw}1 CXD
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/** jch8d(`?d
* @author treeroot ay|{!MkQ
* @since 2006-2-2 Y6PA\7Y\
* @version 1.0 xJGeIh5
*/ s@iCfX U
public class BubbleSort implements SortUtil.Sort{ *?"{T;4u~O
k|C8sSH
/* (non-Javadoc) 5z>\'a1U
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R u-rp^a
*/ jdf@lb=5l
public void sort(int[] data) { y]%,Y=%X
int temp; cN>i3}fq
for(int i=0;i for(int j=data.length-1;j>i;j--){ =Q/>g6
if(data[j] SortUtil.swap(data,j,j-1); m3-J0D<
} _=x_"rzx
} xB+H7Ya
} [wG%@0\
} XOU$3+8q5
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} = lD]sk
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选择排序: fMaNv6(
NyLnE
package org.rut.util.algorithm.support; loe>"_`Cq
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import org.rut.util.algorithm.SortUtil; R
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/** wCmv/m
* @author treeroot jtY~-@*
* @since 2006-2-2 :L0W"$
* @version 1.0 -=IM8Dny
*/ )&<ExJQ&
public class SelectionSort implements SortUtil.Sort { V,5}hQJ
F
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/* W2N 7
* (non-Javadoc) #B9[U}
8
* :/qO*&i,N
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kc[["w&
*/ &Qjl|2
public void sort(int[] data) { -P&e4sV{
int temp; i`'^ zR(`i
for (int i = 0; i < data.length; i++) { H-w|JH>g
int lowIndex = i; ?Fpl.t~
for (int j = data.length - 1; j > i; j--) { j56 An6g
if (data[j] < data[lowIndex]) { p]eD@3Wz
lowIndex = j; V+z)B+
} AoeW<}MO
} &N0|tn
SortUtil.swap(data,i,lowIndex); v2sU$M
} a6P.Zf7
} R?s\0
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} Y cpO;md
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Shell排序: %m3efaC
p>S/6 [X
package org.rut.util.algorithm.support; "|SE#k
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import org.rut.util.algorithm.SortUtil; ,+.#
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/** ppKCY4
* @author treeroot 1+($"$ZC&B
* @since 2006-2-2 Beg5[4@
* @version 1.0 *rT(dp!Y
*/ gwT,D.'Ut
public class ShellSort implements SortUtil.Sort{ |vzWSm
pN_!|+$
/* (non-Javadoc) [CX?Tt
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &
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*/ Sw'?$j^3
public void sort(int[] data) { 'bPo 5V|
for(int i=data.length/2;i>2;i/=2){ RC%r7K f
for(int j=0;j insertSort(data,j,i); U$uO%:4%
} d?Cl04
} ArK9E!`^
insertSort(data,0,1); iZk``5tPE
} "@$STptkc
k5(yf~!c
/** "~
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* @param data ]5/U}Um
* @param j G[j79o
* @param i ]{^vs'as\
*/ 5&=n
private void insertSort(int[] data, int start, int inc) { IxBO$2
int temp; }4%)m
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); B)8Hj).@B
} }j*/>m
} 3HR]T Q%r
} hATy3*4
[HDO^6U
} ;tiUOixJ
P@`"MNS
快速排序: NI:N
W-!
% 6.jh#C
package org.rut.util.algorithm.support; j],.`Y
t'x:fO?cp
import org.rut.util.algorithm.SortUtil; KBA%
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/** vK`h;
* @author treeroot 5>Yd\(`K
* @since 2006-2-2 /+O8A}
* @version 1.0 q|l|mO
*/ _O9H._E
public class QuickSort implements SortUtil.Sort{ ^|(4j_.(e
?u!AHSr(
/* (non-Javadoc) ~(^*?(Z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qFbUM;
*/ dU3>h[q
public void sort(int[] data) { D-:<]D:
quickSort(data,0,data.length-1); >ImM~SR)
} UC/2&7?
private void quickSort(int[] data,int i,int j){ q%Jy>IXt
int pivotIndex=(i+j)/2; <>Ddxmw
file://swap F>(#Af9
SortUtil.swap(data,pivotIndex,j); 166c\QO
~(OIo7#;
int k=partition(data,i-1,j,data[j]); (ul-J4E\O
SortUtil.swap(data,k,j); Z1&GtM
if((k-i)>1) quickSort(data,i,k-1); k|Yv8+XT
if((j-k)>1) quickSort(data,k+1,j); f<altz_\q
bRz^=
} -
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/** L^{;jgd&T9
* @param data gLMea:
* @param i l~!fQ$~
* @param j ,xD*^>!
* @return ;VlZd*M?
*/ |QNLO#$ -
private int partition(int[] data, int l, int r,int pivot) { T_tDpq_|
do{ `pd
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Yj7= T%5
SortUtil.swap(data,l,r); rspoSPnY1
} Y\Qxdq
while(l SortUtil.swap(data,l,r); %i
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return l; 6`baQ!xc.
} VFmg"^k5
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} rjAkpAT
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改进后的快速排序: x+y!P
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package org.rut.util.algorithm.support; %3c|
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import org.rut.util.algorithm.SortUtil; }#W`<,*rL.
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/** jo;uR l
* @author treeroot
&QOWW}
* @since 2006-2-2 Op/79]$
* @version 1.0 <V:<x
*/ ,D@;i
public class ImprovedQuickSort implements SortUtil.Sort { 60aKT:KLC_
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private static int MAX_STACK_SIZE=4096; >4|c7z4
private static int THRESHOLD=10; ]oas
/* (non-Javadoc) FSU%?PxO
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q%n{*py
*/ $D/bU lFx
public void sort(int[] data) { OSa}8rlr'
int[] stack=new int[MAX_STACK_SIZE]; G V:$;
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int top=-1; lsB9;I^+x
int pivot; s!hI:$J.
int pivotIndex,l,r; QlRoe|{
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stack[++top]=0; =CKuiO.j
stack[++top]=data.length-1; $W/+nmb)@K
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while(top>0){ 9QH9gdiw
int j=stack[top--]; !]rETP_
int i=stack[top--]; %kK
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pivotIndex=(i+j)/2; bB:r]*_
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pivot=data[pivotIndex]; 5@+4
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SortUtil.swap(data,pivotIndex,j); vv2vW=\
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file://partition 4fw1_pv_D
l=i-1; G`]v_`>
r=j; =% q?Cr
do{ m"gni #
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); t['k%c
SortUtil.swap(data,l,r); "U%n0r2
} D!bKm[T
while(l SortUtil.swap(data,l,r); *L%6qxl`V
SortUtil.swap(data,l,j); 'yPCZ`5H(
W\@?e32
if((l-i)>THRESHOLD){ ]#Vo}CVP
stack[++top]=i; I 1 b
stack[++top]=l-1; bA@
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} PIZ
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if((j-l)>THRESHOLD){ M.ZEqV+k
stack[++top]=l+1; V$/u
stack[++top]=j; ,vPe}OKj
} E rop9T1
0U82f1ei
} ~ X-)_zH
file://new InsertSort().sort(data); ;^R A!Nj
insertSort(data); aO8ch
} FH)t:!#
/** TT'Ofvdc
* @param data MaZM%W8Z
*/ Q*]$)D3n
private void insertSort(int[] data) { 41u*w2j
int temp; 9|'
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); !Citzor
} {jvOHu
} 9]"S:{KSCn
} b9!.-^<8y
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} pX@Si3G`
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归并排序: ]1m"V;vZ
X*i/A<Y`=
package org.rut.util.algorithm.support; J^ `hbP+2
M :V2a<!c
import org.rut.util.algorithm.SortUtil; j`O7=-
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/** l71gf.4g
* @author treeroot )l_@t(_
* @since 2006-2-2 "NDxgJ%J35
* @version 1.0 #/|75
4]]
*/ oK2pM18
public class MergeSort implements SortUtil.Sort{ u_PuqRcs
`-_N@E1'>
/* (non-Javadoc) !22yvT.;[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'Gjq/L/x
*/ %JtbRs(~q
public void sort(int[] data) { b.b@bq$1
int[] temp=new int[data.length]; #Z\O}<
mergeSort(data,temp,0,data.length-1); %a];
} )t:7_M3
FW8-'~
private void mergeSort(int[] data,int[] temp,int l,int r){ Y>BP?l
int mid=(l+r)/2; Po(]rQbE
if(l==r) return ; ;#TaZN
mergeSort(data,temp,l,mid); Gih[i\%Q
mergeSort(data,temp,mid+1,r); f6!D L<
for(int i=l;i<=r;i++){ Q/ZkW
temp=data; ,`32!i
} *#y;8
int i1=l; M"{uX
int i2=mid+1; /4$4h;_8
for(int cur=l;cur<=r;cur++){ 8!mc@$Z
if(i1==mid+1) Ri#H.T<'
data[cur]=temp[i2++]; xY\0zQ
else if(i2>r) r[_4Lo@G
data[cur]=temp[i1++]; 1zftrX~v!X
else if(temp[i1] data[cur]=temp[i1++]; $Z?\>K0i
else ,Q/Ac{C
data[cur]=temp[i2++]; %+-C3\'
} :!fG; )=
} g>
S*<
\*0yaSQF
} e-5?p~>
M2@b1;
改进后的归并排序: ir16
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package org.rut.util.algorithm.support; %."@Q$lA
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import org.rut.util.algorithm.SortUtil; Z5(enTy-
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/** }fR,5|~X
* @author treeroot 7=XL!:P
* @since 2006-2-2 }_
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l@*
* @version 1.0 }(XdB:C8
*/ 8|Y.|\
public class ImprovedMergeSort implements SortUtil.Sort { =Gk/k}1
<spZ! #o
private static final int THRESHOLD = 10; sZ&G%o
_7T@5\b:;
/* P
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* (non-Javadoc) L,,*gK
* ULH0'@BJ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CjIu[S1%
*/ V DS23Bo
public void sort(int[] data) { 76cG90!Z
int[] temp=new int[data.length]; RW$:9~
mergeSort(data,temp,0,data.length-1); $,>@o=)_
} '1^B+m
YW\0k5[
private void mergeSort(int[] data, int[] temp, int l, int r) { &sXRN&Fp
int i, j, k; CSPKP#,B0[
int mid = (l + r) / 2; y! .J
if (l == r) -u!FOD/
return; YW@#91.
if ((mid - l) >= THRESHOLD) YwY74w:
mergeSort(data, temp, l, mid); c#IYFTz
else #@@Mxr'F
insertSort(data, l, mid - l + 1); dC\ZjZZ
if ((r - mid) > THRESHOLD) *=V7@o
mergeSort(data, temp, mid + 1, r); 38DT2<qC
else cRd0S*QN2
insertSort(data, mid + 1, r - mid); 54-#QIx|
5]I| DHmu
for (i = l; i <= mid; i++) { p
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temp = data; ^EG\iO2X
} AcI,N~~
for (j = 1; j <= r - mid; j++) { ")O`mXg-
temp[r - j + 1] = data[j + mid]; K{b(J
Nd
} G7--v,R1x
int a = temp[l]; -/{4Jf Wf
int b = temp[r]; M?b6'd9f
for (i = l, j = r, k = l; k <= r; k++) { ,QzL)W7
if (a < b) {
t#%R
q
data[k] = temp[i++]; C2Xd?d
a = temp; 1]IQg;q
} else { 7eWk7&Xul
data[k] = temp[j--]; '13ZX:
b = temp[j]; V $z}
K
} h/B>S
} .9md~j:o^s
} ={LMdC~5X
,g%&|FAP
/** dl hdsj:
* @param data *@d&5
* @param l T3`ludm^u
* @param i []a[v%PkG
*/ /axIIfx-
private void insertSort(int[] data, int start, int len) { oB74y
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 22f`LoM
} hXqD<?
} ,+~rd4a
} ]4;PR("aU
} aW!@f[%~F
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堆排序: p~*UpU8u
sP^R/z|Y
package org.rut.util.algorithm.support; 5jUYN-$GO
Gs3LB/8?
import org.rut.util.algorithm.SortUtil; 4)1s M=u
i hh/sPi
/** $H+VA@_
* @author treeroot Ur*6Gi6
* @since 2006-2-2 rXA*NeA3v
* @version 1.0 XS$OyW_Q
*/ q$aaA`E%
public class HeapSort implements SortUtil.Sort{ B" 3dQwQ
3Kn_mL3V-
/* (non-Javadoc) S{Er?0wm.R
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qG<$Ajiin
*/ sqW*
pi
public void sort(int[] data) { fJ ,1Ef;Z
MaxHeap h=new MaxHeap(); @r?Uua
h.init(data); U*3uq7
for(int i=0;i h.remove(); _U/!4A
System.arraycopy(h.queue,1,data,0,data.length); clk[ /'1
} C*`mM'#
aXL{TD:]
private static class MaxHeap{ a<@N-E xr
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void init(int[] data){ Qci4J
this.queue=new int[data.length+1]; O)"gS!,
for(int i=0;i queue[++size]=data; SCz(5[MZJ
fixUp(size); 0@EwM
} ?.YOI.U^
} 3mOtW%Hl
i@4~.iZ8
private int size=0; eQ&ZX3*}
v;0|U:`]
private int[] queue; (<)]sp2
AGbhJ=tB
public int get() { LU9A#
return queue[1]; RoyPrO [3
} ,13Lq-
R%'^ gFk8
public void remove() { |<GDUwC_;
SortUtil.swap(queue,1,size--); =J ym%m
fixDown(1); n-%s8aaVf
} o0pII )v
file://fixdown 9[^gAR
private void fixDown(int k) { p1|f<SF')
int j; kP?KXT3y
while ((j = k << 1) <= size) { M`l.t -ut
if (j < size %26amp;%26amp; queue[j] j++; p8]68!=W\F
if (queue[k]>queue[j]) file://不用交换 *;fw%PW
break; Oj^,m.R
SortUtil.swap(queue,j,k); V?=8".GiX
k = j; X0n~-m"m
} Mv6-|O
} P<f5*L#HD
private void fixUp(int k) { OdB?_.+$
while (k > 1) { /=gOa\k|p
int j = k >> 1; kJ Mf
if (queue[j]>queue[k]) 1SR+m>pL
break; u6bXv(
SortUtil.swap(queue,j,k); {1b Zg
k = j; %!PM&zV
} <0PT"ij
} 7Ddaf>
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} I:d[Q
s
uI DuGrt
} $.[#0lCI
}eRD|1
SortUtil: (bh95X
,qYJioWX
package org.rut.util.algorithm; YR;^hs?
1M}&Z H
import org.rut.util.algorithm.support.BubbleSort; `ck$t5:6sp
import org.rut.util.algorithm.support.HeapSort; .({smN,B
import org.rut.util.algorithm.support.ImprovedMergeSort; P'O#I}Dmw<
import org.rut.util.algorithm.support.ImprovedQuickSort; C|o`k9I#
import org.rut.util.algorithm.support.InsertSort; z$kenhFG/
import org.rut.util.algorithm.support.MergeSort; oI#a_/w
import org.rut.util.algorithm.support.QuickSort; H8'Z#"h
import org.rut.util.algorithm.support.SelectionSort; Jzp#bgq}|
import org.rut.util.algorithm.support.ShellSort; u3o#{~E/#
fa<v0vb+
/** tyDM'|p
* @author treeroot j8sH#b7Z
* @since 2006-2-2 leQT-l2Bk
* @version 1.0 e~"fn*"
*/ s\P2Bp_{
public class SortUtil { @_LN3zP
public final static int INSERT = 1; is@b&V]
public final static int BUBBLE = 2; %zOh
public final static int SELECTION = 3; EKzAd
public final static int SHELL = 4; <~)kwq'
public final static int QUICK = 5; "kA*Vc#
public final static int IMPROVED_QUICK = 6; A.5i"Ci[ie
public final static int MERGE = 7; cDI [PJ9
public final static int IMPROVED_MERGE = 8; e0$=!QlPr
public final static int HEAP = 9; W
mm4hkf
b%Eei2Gm%
public static void sort(int[] data) { T =2=k&|
sort(data, IMPROVED_QUICK); xrN
&N_K#
} i>joT><B
private static String[] name={ x1BobhU~Zl
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" O%ug@& S{
}; ":nQgV\9
G!XIc>F*
private static Sort[] impl=new Sort[]{ 2"-S<zM
new InsertSort(), `w.AQ?p@
new BubbleSort(), @l0|*lo%
new SelectionSort(), 84{Q\c
new ShellSort(), l]]l
new QuickSort(), ~QZ"Z
tu
new ImprovedQuickSort(), -!8(bjlJ&
new MergeSort(), oQL59XOT4
new ImprovedMergeSort(), /NFz4h=>
new HeapSort() ^`D=GF^tX
}; 42 \-~]
sk|=% }y
public static String toString(int algorithm){ A?*o0I
return name[algorithm-1]; PG]%Bv57
} c~o+WI
Ym
!(t,FYeH
public static void sort(int[] data, int algorithm) { nL?oTze*p
impl[algorithm-1].sort(data); Tb1U^E:
} p\Lq}tk<
P5gN #G
public static interface Sort { @WKzX41'
public void sort(int[] data); ?J,AB #+
} ]p!Gt,rYq
|D.O6?v@
public static void swap(int[] data, int i, int j) { T,_(?YJW
int temp = data; <A.W 8b7D
data = data[j]; DSxUdEK6
data[j] = temp; s[Ur~Wvn
} wl1m*`$
} R3X{:1{j