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。 c`
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插入排序: }p=g*Zo*C;
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package org.rut.util.algorithm.support; X8b|]Nr
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import org.rut.util.algorithm.SortUtil; qgx?"$ Z
/** :6Pnie
* @author treeroot =NZ[${7mq
* @since 2006-2-2 d8E,o7$m
* @version 1.0 |g<* Rk0
*/ i?;R}%~
public class InsertSort implements SortUtil.Sort{ {^J!<k,R\;
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/* (non-Javadoc) z1vw'VT>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ql &0O27
*/ 'z5h3J
public void sort(int[] data) { \vCGU>UY
int temp; DI,K(_@G
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); XX2h(-
} _ij$f<
} EY=FDl V
} 7)^:8I(
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} \5TxE
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冒泡排序: e3v5,.
vc8?I."?
package org.rut.util.algorithm.support; W8]V
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import org.rut.util.algorithm.SortUtil; s]H^wrg&
xx }GOY.J
/** rk|a5-i
* @author treeroot fxgU~'
* @since 2006-2-2 \G>ZkgU
* @version 1.0 rCBfD
*/ ,PECYwegkt
public class BubbleSort implements SortUtil.Sort{ lZWK2
=X-Tcj?3g
/* (non-Javadoc) %WGuy@tL
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZCYS\E7X
*/ O>c$sL0g
public void sort(int[] data) { $*\L4<(
int temp; R?pR xY
for(int i=0;i for(int j=data.length-1;j>i;j--){ j1q[c,
if(data[j] SortUtil.swap(data,j,j-1); /YH`4e5g
} brSi<
} _U0$ =V
} O'$K],=BS
} aXY-><
88lxHoPV
} 2r&R"B1`(
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选择排序: xx)-d,S
}T.?c9l X
package org.rut.util.algorithm.support; ?D|\]0 eN
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import org.rut.util.algorithm.SortUtil; !%PWig-
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/** <G~>~L.E
* @author treeroot $bsH$N#6T
* @since 2006-2-2 S1J<9xqSQ8
* @version 1.0 "e6|"w@8
*/ S~NM\[S
public class SelectionSort implements SortUtil.Sort { y(a!YicA?
jb[!E^'&>
/* `/n M[
* (non-Javadoc) DC Q^fZ/
* *5VXyt2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %gd(wzco
*/ >cN~U3
public void sort(int[] data) { VDGCWg6z
int temp; 0F:1\9f5
for (int i = 0; i < data.length; i++) { P"3*lk+w
int lowIndex = i; P0Z!?`e=M
for (int j = data.length - 1; j > i; j--) { T$+-IAE
if (data[j] < data[lowIndex]) { _S@aGw
lowIndex = j; |Au ]1}
} M4m$\~zf
} zj|WZ=1*Wp
SortUtil.swap(data,i,lowIndex); MYLsHIPC
} {9LWUCpsf
} Bs;|D
PdeBDFWD
} Dyg?F
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Shell排序: ~1kXUWq3
k2 Q
qZxm!
package org.rut.util.algorithm.support; 5x8+xw3Eh
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import org.rut.util.algorithm.SortUtil; f)Xr!7
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/** 1HT_
* @author treeroot 'CR)`G_'[
* @since 2006-2-2 ve6w<3D@
* @version 1.0 Wu1{[a|
*/ ]J7Qgp)i
public class ShellSort implements SortUtil.Sort{ 9`Q<Yy"du
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/* (non-Javadoc) ^U[D4UM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X"aEJ|y
*/ MXD4|r(
public void sort(int[] data) { @b#^ -
for(int i=data.length/2;i>2;i/=2){ 58tVx'1y
for(int j=0;j insertSort(data,j,i); t*XN_=E$f
} FFKGd/:!
} PVOx`<ng
insertSort(data,0,1); 3)=c]@N0
} u3 0s_\
[
ho(z30k
/** xiblPF_n3
* @param data .TJEUK
* @param j : 9t4s#.
* @param i a->3`c
*/ XT>.`, sv
private void insertSort(int[] data, int start, int inc) { e8=YGx^o`
int temp; R&f^+0%f
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); E:`v+S_h
} rN)V[5R#M
} {a(&J6$VE
} "&.S&=FlI
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} LOy0hN-$b
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快速排序: rjx6Djo>
a>O9pX
package org.rut.util.algorithm.support; J%lgR
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import org.rut.util.algorithm.SortUtil; *hLQ
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/** ?:{sH#ua
* @author treeroot RDqFL.-S
* @since 2006-2-2 .
#lsic8]
* @version 1.0 t"072a
*/ \daZk /@
public class QuickSort implements SortUtil.Sort{ U?a6D:~G
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/* (non-Javadoc) VZ&
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }Z-Z|G)#
*/ <
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public void sort(int[] data) { $Fkaa<9;P
quickSort(data,0,data.length-1); .iMN,+qP
} d?AlI
private void quickSort(int[] data,int i,int j){ Sq\(pfvo
int pivotIndex=(i+j)/2; NEt1[2X%
file://swap 2dp>Z",
SortUtil.swap(data,pivotIndex,j); `
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r}#\BbCv;7
int k=partition(data,i-1,j,data[j]); z!;1i[|x
SortUtil.swap(data,k,j); uj>WgU
if((k-i)>1) quickSort(data,i,k-1); 'H8(=9O1d
if((j-k)>1) quickSort(data,k+1,j); bHLT}x/Gw
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} ]?O2:X
/** sg'pO*_&
* @param data /S5|wNu
* @param i <@wj7\pQ
* @param j tGA :[SP
* @return [r+ZE7$2b"
*/ hpTDxh'?$C
private int partition(int[] data, int l, int r,int pivot) { :cu#V
do{ qyC=(v
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 'r1LSht'
SortUtil.swap(data,l,r); !`1'2BC
} 8r"+bhGx~
while(l SortUtil.swap(data,l,r); <f CKUc
return l; eW5SFY.
} Q+4tIrd+
h$eEn l}
} o<IAeH {+
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改进后的快速排序: jZ`;Cy\<B
v>z tB,,9
package org.rut.util.algorithm.support; akw,P$i
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import org.rut.util.algorithm.SortUtil; `w I /0
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/** WJ<^E"^
* @author treeroot 6T 8!xyi-+
* @since 2006-2-2 .ERO|$fv
* @version 1.0 F}Vr:~
*/ "-@[R
public class ImprovedQuickSort implements SortUtil.Sort { uqz]J$
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private static int MAX_STACK_SIZE=4096; @(r/dZc
private static int THRESHOLD=10; pTIf@n6I
/* (non-Javadoc) BIuK @$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W9NX=gE4
*/ 7{&|;U
public void sort(int[] data) { ca+5=+X7
int[] stack=new int[MAX_STACK_SIZE]; {G?N E
h=;{oY<V)?
int top=-1; %|s+jeUDn|
int pivot; 6Gf?m;
int pivotIndex,l,r; vpmj||\-
J:V?EE,\-
stack[++top]=0; <b,~:9*?
stack[++top]=data.length-1; d!eYqM7-G
p/+a=Yo
while(top>0){ w@,zFV
int j=stack[top--]; &b:1I7Cp*
int i=stack[top--]; vVOh3{e|
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V'
pivotIndex=(i+j)/2; |i++0BU
pivot=data[pivotIndex]; s[UHe{^T
Gz.|]:1
SortUtil.swap(data,pivotIndex,j); JtER_(.
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file://partition !qG7V:6
l=i-1; S]+:{9d
r=j; ;^Dpl'v%\
do{ p,#o<W
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); #ep`nf0x
SortUtil.swap(data,l,r); #\=F O>
} %7|9sQ:
while(l SortUtil.swap(data,l,r); Dh=9Gns9
SortUtil.swap(data,l,j); wb0L.'jyR)
=i[\-
if((l-i)>THRESHOLD){ Hj}K{20
stack[++top]=i;
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stack[++top]=l-1; \kZ?
} |p ,P46I
if((j-l)>THRESHOLD){ ~sh`r{0
stack[++top]=l+1; Z.L c>7o
stack[++top]=j; E 7{U|\
} ')cMiX\v
6e|*E`I
} `x*Pof!Io
file://new InsertSort().sort(data); .6Pw|xu`Pw
insertSort(data); h'{ C[d
} iUN Ib
/** %$.3V#?
* @param data lgk.CC
*/ .:F%_dS D
private void insertSort(int[] data) { M<v%CawS
int temp; %V7at7>o
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); "]}
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} s*. hl.k.
} {ttysQ-
} _z|65H
\| 8
} |IzPgC
Q ~#Wf?
归并排序: ^'PWI{ O
W:pIPDx1=!
package org.rut.util.algorithm.support; W_"sM0
w
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import org.rut.util.algorithm.SortUtil; a.k.n<
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/** T4Pgbop
* @author treeroot "ut39si
* @since 2006-2-2 _l89
* @version 1.0 I&x=;
*/ Mh]Gw(?w
public class MergeSort implements SortUtil.Sort{ -lY6|79bF
<Zmg#
/* (non-Javadoc) *RJG!t*t
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qm/22:&v5
*/ hcsP2
0s
public void sort(int[] data) { ) vE~'W
int[] temp=new int[data.length]; t.i 8
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mergeSort(data,temp,0,data.length-1); EM(gmWHij
} _@
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private void mergeSort(int[] data,int[] temp,int l,int r){ vN;N/mL
int mid=(l+r)/2; 2K/4Rf0;
if(l==r) return ; L
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mergeSort(data,temp,l,mid); 4V)kx[j
mergeSort(data,temp,mid+1,r); #lL^?|M
for(int i=l;i<=r;i++){ .SU8)T
temp=data; ,is3&9
} =O5pY9UO
int i1=l; TrEu'yxy8*
int i2=mid+1; kTOzSiq
for(int cur=l;cur<=r;cur++){ lZ]ZDb?P
if(i1==mid+1) y51e%n$
data[cur]=temp[i2++]; NJWA3zz
else if(i2>r) DEKP5?]
data[cur]=temp[i1++]; Z>k#n'm^z
else if(temp[i1] data[cur]=temp[i1++]; $9_xGfx}
else $r@zs'N
data[cur]=temp[i2++]; 6]WAUK%h
} 98IJu
} h+g_rvIG*
84& $^lNV
} spH7 /5}
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改进后的归并排序: 4DI8s4fi
P~ >OS5^
package org.rut.util.algorithm.support; H)kwQRfu
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import org.rut.util.algorithm.SortUtil; |6sp/38#p
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/** 823Y\x~>
* @author treeroot Q4#m\KK;i9
* @since 2006-2-2 U)]oO
* @version 1.0 /K@XzwM
*/ J?"B%B5c
public class ImprovedMergeSort implements SortUtil.Sort { {4<C_52t
N2^=E1|_
private static final int THRESHOLD = 10; !C':
MzdV2.
/* _^Ubs>d=*
* (non-Javadoc) 99e.n0
* /$Nsd
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V1N3iI
*/ 5IGX5x
public void sort(int[] data) { 24 ' J
int[] temp=new int[data.length]; [.7d<oY
mergeSort(data,temp,0,data.length-1); xX&+WR
} _$E6P^AQ
\h/H#jZJ
private void mergeSort(int[] data, int[] temp, int l, int r) { i#n0U/
int i, j, k; y@S$^jk.
int mid = (l + r) / 2; r,73C/*&/
if (l == r) RLjc&WhzXu
return; *SJ_z(CZm
if ((mid - l) >= THRESHOLD) {#vgtgBB
mergeSort(data, temp, l, mid); C_}]`[
else UmP/h@8
insertSort(data, l, mid - l + 1); @1roe
G
if ((r - mid) > THRESHOLD) _aSxc)?
mergeSort(data, temp, mid + 1, r); K<3A1'_
else X]TG<r
insertSort(data, mid + 1, r - mid); )hsgC'H{~]
Ko<:Z)PS
for (i = l; i <= mid; i++) { w3ResQ
temp = data; 2~)`N>@
} D0-3eV-
for (j = 1; j <= r - mid; j++) { z#wkiCRYm
temp[r - j + 1] = data[j + mid]; T4Uev*A
} <44G]eb
int a = temp[l]; hD 82tr
int b = temp[r]; e8a+2.!&\
for (i = l, j = r, k = l; k <= r; k++) { vH@ds
k
if (a < b) { pI\]6U
data[k] = temp[i++]; 0
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a = temp; &jJL"gq"
} else { Naf0)3q>!
data[k] = temp[j--]; AO4U}?
b = temp[j]; 9s
q
} _1\v
} L~OvY
} m=:9+z
?dg[:1R}
/** m+[Ux{$
* @param data 194)QeoFw
* @param l F@KGj|
* @param i rglXs
*/ U?Zq6_M&
private void insertSort(int[] data, int start, int len) { \!ZTL1b8t
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 1.GQau~
} -GrE}L
} g]H<}4lgq"
} *i%.;Z"
} zwjgE6
A?P_DA
堆排序: .t!x<B
hMO=#up&
package org.rut.util.algorithm.support; \ ~$#1D1f
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import org.rut.util.algorithm.SortUtil; YjKxb 9
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/** qo bc<-
* @author treeroot k?^z;Tlvw
* @since 2006-2-2 q>+k@>bk@
* @version 1.0 aX'*pK/-
*/ `Ggbi4),
public class HeapSort implements SortUtil.Sort{ 3F2w-+L
?CPahU
/* (non-Javadoc) BW4J> {
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) on`3&0,.
*/ ?Z/V~,
public void sort(int[] data) { xi}skA
MaxHeap h=new MaxHeap(); /y}xX
h.init(data); G_,jgg7
for(int i=0;i h.remove(); )jP1or
System.arraycopy(h.queue,1,data,0,data.length); W/h[A3 `3N
} ^<2p~h0
\
p<"m[Dt]
private static class MaxHeap{ A3/k@S-R2
8{sGNCvU
void init(int[] data){ D'Q\za
this.queue=new int[data.length+1]; UP,c |
for(int i=0;i queue[++size]=data; XXa|BZ1RX
fixUp(size); 37o;;
} 1=V-V<
} L4nYXW0y
pW3^X=6
private int size=0; *$g-:ILRuZ
$>LQ6|XRu
private int[] queue; k{-Cwo
4.t-i5
public int get() { ]c'A%:f<
return queue[1]; H4+i.*T#
} _oeS Uzq.
oOFVb5qoFU
public void remove() { Cw&KVw*
SortUtil.swap(queue,1,size--); = dN@Sa/
fixDown(1); a\*yZlXKs
} 6Z"X}L,*
file://fixdown Z,PPu&lmE/
private void fixDown(int k) { VI*$em O0
int j;
Z *x'+X
while ((j = k << 1) <= size) { u>vL/nI
if (j < size %26amp;%26amp; queue[j] j++; 3u0RKLc\
if (queue[k]>queue[j]) file://不用交换 3!_XEN[
break; f3y=Wxk[
SortUtil.swap(queue,j,k); G18b$z
k = j; |2A:eI8 ^
} ZbKg~jdF
} KMax$
private void fixUp(int k) { 0w7DsPdS
while (k > 1) { d&>^&>?$zh
int j = k >> 1; xyXa .
if (queue[j]>queue[k]) MF'JeM;H
break; m9;SrCN_
SortUtil.swap(queue,j,k); "#g}ve,
k = j; n `Ac 3A
} ))Za&S*<
} ;$Jo+#
{oL>1h,%3?
} Dw"\/p:-3
Nz-&MS
} h{qgEIk&
eyxW 0}[
SortUtil: |w3M7;~eF
/x *3}oI
package org.rut.util.algorithm; [V`r^
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Ei3m
import org.rut.util.algorithm.support.BubbleSort; 4skD(au8
import org.rut.util.algorithm.support.HeapSort; yf,z$CR
import org.rut.util.algorithm.support.ImprovedMergeSort; e|r`/:M
import org.rut.util.algorithm.support.ImprovedQuickSort; x?<FJ"8"k
import org.rut.util.algorithm.support.InsertSort; MHwIA *R
import org.rut.util.algorithm.support.MergeSort; A@u@ift
import org.rut.util.algorithm.support.QuickSort; N$tGQ@
import org.rut.util.algorithm.support.SelectionSort; ~V6D<
import org.rut.util.algorithm.support.ShellSort; NxILRKwO
0"SU_jQzv
/** Iga024KR
* @author treeroot \b>]8Un"
* @since 2006-2-2 U$UIN#
* @version 1.0 ?q [T
*/ y1#1Ne_
public class SortUtil { L"aeG
public final static int INSERT = 1; \{D"
!e
public final static int BUBBLE = 2; 7j{?aza
public final static int SELECTION = 3; ),!qTjD
public final static int SHELL = 4; B-mowmJ3dg
public final static int QUICK = 5; )U#K
public final static int IMPROVED_QUICK = 6; ugBCBr
public final static int MERGE = 7; %
AgUUn&k
public final static int IMPROVED_MERGE = 8; 'N(R_q6MW
public final static int HEAP = 9; {4PwLCy
GA.8@3
public static void sort(int[] data) { z(~_AN M4,
sort(data, IMPROVED_QUICK); u1.BN>G
} ~>XxGjxe
private static String[] name={ H,NF;QPPC
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ji="DYtL
}; R@2X3s:
C_Wc5{
private static Sort[] impl=new Sort[]{ '<uq3?5
new InsertSort(), !`r$"}g
new BubbleSort(), v` r:=K
new SelectionSort(), FGkVqZ Y2?
new ShellSort(), e#q}F>/L
new QuickSort(), y_[vr:s5pG
new ImprovedQuickSort(), +H2Qk4XFB
new MergeSort(), E(|>Ddv B&
new ImprovedMergeSort(), "Yy n/
new HeapSort() t`QENXA}
}; Bbp|!+KP{(
TsZ@
public static String toString(int algorithm){ i@'dH3-kO
return name[algorithm-1]; S]{oPc[7
} K>
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;n},"&
public static void sort(int[] data, int algorithm) { sR8"3b<qA
impl[algorithm-1].sort(data); 3gf1ownC
} g\AY|;T
M3Kfd
public static interface Sort { b`_Q8 J
public void sort(int[] data); j+YJbL v
} ,z?':TZ
A2Tw<&Tw(
public static void swap(int[] data, int i, int j) { hv+zGID7
int temp = data; -F>jIgeC2v
data = data[j]; I}Q2Vu<
data[j] = temp; T9& 1VW
} y?#
Loe
} g,Y/M3>(