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。 Kzs]+Cl
插入排序: l#FW#`f
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package org.rut.util.algorithm.support; vu%:0p`K
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import org.rut.util.algorithm.SortUtil; *|f&a
/** p<|I!n&9
* @author treeroot +7jr ]kP9
* @since 2006-2-2 PC| U]
* @version 1.0 0`KB|=>
*/ M1MpR+7S
public class InsertSort implements SortUtil.Sort{ ]to"X7/
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/* (non-Javadoc)
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1`tE Hu.
*/ LvJ')HG
public void sort(int[] data) { D<rO:Er?*a
int temp; VWlOMqL995
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); U8Pnt|0 M
} H<M
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} ]U]22I'+$2
} C*}TY)8
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} ^KU:5Bn
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冒泡排序: C^@.GA
h^P>,dy0
package org.rut.util.algorithm.support; cJ
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import org.rut.util.algorithm.SortUtil; G\\zk
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/** OE!:`Bo3T
* @author treeroot GfAt-huL(
* @since 2006-2-2 IED7v
* @version 1.0 !A"`jc~x:
*/ rSIb1zJ
public class BubbleSort implements SortUtil.Sort{ !*:Zcg?7n
u"K-mr#$[o
/* (non-Javadoc) ,`/J1(\nd
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O[3AI^2
*/ [?<"SJ,`
public void sort(int[] data) { ny5=
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int temp; H!Y`?Rc
for(int i=0;i for(int j=data.length-1;j>i;j--){ }N_9&I
if(data[j] SortUtil.swap(data,j,j-1); uc?QS~H&w
} krTH<- P
} p~h=]o'i
} <^&NA<2
} ;T}#-`O_Im
A2z%zMlZc
} ?aInn:FE
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选择排序: 4uv'l3
p+ymtPF
package org.rut.util.algorithm.support; [R j=k)aBm
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import org.rut.util.algorithm.SortUtil; U S+PI`
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/** \xk`o5/{
* @author treeroot QQKvy0?1
* @since 2006-2-2 *1V}vJvi
* @version 1.0 x%ZjGDF m
*/ -OZRSjmY
public class SelectionSort implements SortUtil.Sort { VrhG=CK
w%cd$"EH
/* ARW|wXhyf
* (non-Javadoc) ?Zu=UVb
* GLA,,i'i9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CD(2A,u)/
*/ HoGrvt<:.P
public void sort(int[] data) { Wx"bW ICc
int temp; h\KQ{-Bl
for (int i = 0; i < data.length; i++) { e9h T
int lowIndex = i; %FGPsHH
for (int j = data.length - 1; j > i; j--) { F ]\4<
if (data[j] < data[lowIndex]) { .eW}@1+[;
lowIndex = j; ecA[
} FsZF>vaV
} ^r^cMksB*
SortUtil.swap(data,i,lowIndex); zbP0!
} HE+y1f]
} ,U2
/J
%"j<`
} lyKV^7}
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Shell排序: GiB3.%R`
a3
wUB
package org.rut.util.algorithm.support; aT"q}UTK
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import org.rut.util.algorithm.SortUtil;
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/** R{kZKD=
* @author treeroot wQ[~7 ,o
* @since 2006-2-2 Yd lXMddE
* @version 1.0 {Q^P<
*/ ]*U\ gm%
public class ShellSort implements SortUtil.Sort{ D M{7x77
AV AF!Z
/* (non-Javadoc) q~.\NKc
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q4-d2I>0
*/ qHg\n)R"x!
public void sort(int[] data) { T30!'F(*,
for(int i=data.length/2;i>2;i/=2){ g^"",!J/
for(int j=0;j insertSort(data,j,i); gKcP\m
} "ji4xy
} uXW<8(
%W
insertSort(data,0,1); Yul-.X
} ]q7\
J@(=#z8xS
/** Jg3}U j2By
* @param data /s
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* @param j =&xamA)
* @param i EUmQn8
*/ 8$-Wz:X&
private void insertSort(int[] data, int start, int inc) { |HI=ykfI
int temp; E}mnGe
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Z<K[
} 0@{K'm/
} Q<P],}?:
} d4/snvq
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} 3>yb$ZU"-
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快速排序: Yn[y9;I{
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package org.rut.util.algorithm.support; A!H6$-W|p
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import org.rut.util.algorithm.SortUtil; $}2m%$vJO
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/** .?CDWbzq
* @author treeroot "T?%4^:g
* @since 2006-2-2 cIK-VmO
* @version 1.0 7EOn4I2@[
*/ q0jzng
public class QuickSort implements SortUtil.Sort{ W@AZ<(RI:
G+ Y`65
/* (non-Javadoc) :D}xT]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1[D~Eep
*/ h&L+Qx
public void sort(int[] data) { }4ijLX>b
quickSort(data,0,data.length-1); ik_Ll|
} 724E(?>J
private void quickSort(int[] data,int i,int j){ }E[S%W[
int pivotIndex=(i+j)/2; tx}{E<\>$
file://swap }:5r#Cd
SortUtil.swap(data,pivotIndex,j); &`Q0&8d5
}7+G'=XI/
int k=partition(data,i-1,j,data[j]); i>_V?OT#5
SortUtil.swap(data,k,j); N-]h+Cnyu
if((k-i)>1) quickSort(data,i,k-1); x&+/da-E/5
if((j-k)>1) quickSort(data,k+1,j); (ScL C
&Ph@uZ\
} B-|:l7
/** Hwklk9U
* @param data '{QbjG%<P
* @param i 6Y)'p
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* @param j bqFGDmu6'
* @return <<6i6b
*/ r^n%PH<
private int partition(int[] data, int l, int r,int pivot) { vi["G7
do{ 4(& W>E
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 8k2prv^
SortUtil.swap(data,l,r); A&~G
} Q*ZqY
while(l SortUtil.swap(data,l,r); (ST/>")L
return l; F4M<5Yi
} rg"W1m[k
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} pjvChl5
q!$ZBw-7>A
改进后的快速排序: /P<RYA~
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package org.rut.util.algorithm.support; _' Xt
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import org.rut.util.algorithm.SortUtil; u^s{r`/
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/** NYM$0v`0YK
* @author treeroot $fPf/yQmC
* @since 2006-2-2 vY7C!O/y_k
* @version 1.0 k=Pu4:RF
*/ $^INl0Pg
public class ImprovedQuickSort implements SortUtil.Sort { V?kJYf(<
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c
private static int MAX_STACK_SIZE=4096; Mou>|U1e"
private static int THRESHOLD=10; |#^u%#'[2
/* (non-Javadoc) "KcSOjvJ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z=|:D,&
*/ t~)w921>
public void sort(int[] data) { wr~# rfH
int[] stack=new int[MAX_STACK_SIZE]; m@;X%wf<U
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int top=-1; CtTG`)"|
int pivot; ?9mFI (r~
int pivotIndex,l,r;
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oil s;*q
stack[++top]=0; R{NmWj['Mg
stack[++top]=data.length-1; T|GRkxd,E3
[( BA:x1
while(top>0){ Nj1vB;4Nx
int j=stack[top--]; <8|vj2d2
int i=stack[top--]; br.jj
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pivotIndex=(i+j)/2; yd]W',c
pivot=data[pivotIndex]; I;qeDCM
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SortUtil.swap(data,pivotIndex,j); ;E l"dqH
M}!7/8HUC
file://partition Wy.2*+5FX0
l=i-1; Sir7TQ4B
r=j; .M!6${N);
do{ (~?P7RnU%
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); @`G_6<.`
SortUtil.swap(data,l,r); -PbGNF
} afqLTWUS
while(l SortUtil.swap(data,l,r); 0t*JP
SortUtil.swap(data,l,j); ^Jcs0c
@\
\om$%FUP
if((l-i)>THRESHOLD){ 68V66:0
stack[++top]=i; t/yGMR=
stack[++top]=l-1; %a&Yt
} uhSRl~tn
if((j-l)>THRESHOLD){ - U!:.
stack[++top]=l+1; )TnxsFC
stack[++top]=j; PaP47>(
} |y)R lb#d
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} d^
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file://new InsertSort().sort(data); 1Y$ gt
insertSort(data); i64a]=
} Q@6OIE
/** rY4{,4V
* @param data KFCrJ)
*/ r@5_LD@f
private void insertSort(int[] data) { f;!1=/5u-
int temp; sDTCV8"w
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Z@>hN%{d+g
} Ac0C,*|^
} 1q]V/V}
} jw?/@(AC6
vz#VW
} "toyfZq@
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归并排序: |&eZ[Sy(=l
bq/m?;
package org.rut.util.algorithm.support; Qu,W3d
3%{A"^S=}
import org.rut.util.algorithm.SortUtil; ?lW-NPr
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/** srXGe`VL
* @author treeroot .Qm"iOyM
* @since 2006-2-2 5+\[x`
* @version 1.0 qqA(Swe)T
*/ }&BE*U8_
public class MergeSort implements SortUtil.Sort{ rCR?]1*Z
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/* (non-Javadoc) _eb:"(m
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `9E:V=
*/ -CtLL_ I
public void sort(int[] data) { ,l^; ZE
int[] temp=new int[data.length]; }R4%%)j(Vj
mergeSort(data,temp,0,data.length-1); p \A ^kX^5
} o%XAw
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private void mergeSort(int[] data,int[] temp,int l,int r){ [* ,k
int mid=(l+r)/2; ,*$L_itL
if(l==r) return ; `WQz_}TqB
mergeSort(data,temp,l,mid); /yPFts_q
mergeSort(data,temp,mid+1,r); ,~u 5SR
for(int i=l;i<=r;i++){
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temp=data; Nd'+s>d0
} XdE#l/#
int i1=l; )#n0~7
&
int i2=mid+1; |TLU
for(int cur=l;cur<=r;cur++){ 1DVu`<OXcH
if(i1==mid+1) xS?[v&"2
data[cur]=temp[i2++]; ^ZV1Ev8T6
else if(i2>r) (7^5jo[D
data[cur]=temp[i1++]; 1"?3l`i
else if(temp[i1] data[cur]=temp[i1++]; Sm(X/P=z
else )'3(=F$+l
data[cur]=temp[i2++]; ATl.Qku@
} 9Jd{HI=
} >
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2k;>nlVxX
} RnC96"";R.
s ;EwAd(
改进后的归并排序: .l5y+a'
8*z)aB&f3
package org.rut.util.algorithm.support; 'X_8j` ]#
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import org.rut.util.algorithm.SortUtil; n6D9f~8"
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/** y|X</3w
* @author treeroot Z BjyQ4h
* @since 2006-2-2 hr3RC+ y
* @version 1.0 %\Dvng6$
*/ dS]TTU1
public class ImprovedMergeSort implements SortUtil.Sort { J&Ig%&/
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private static final int THRESHOLD = 10; x}v]JEIf[Q
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/* I/4:SNha
* (non-Javadoc) "2} {lu
* <%w)EQf4m
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qd$Y"~Mco
*/ [Q+8Ku
public void sort(int[] data) { iR}3 [
int[] temp=new int[data.length]; _`3'D`s
mergeSort(data,temp,0,data.length-1); }dcXuX4{r
} Age
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private void mergeSort(int[] data, int[] temp, int l, int r) { Ilt!O^
int i, j, k; q"BM*:W
int mid = (l + r) / 2; 7^1yZ1(
if (l == r) >%Rb}Ki4
return; EGpN@
if ((mid - l) >= THRESHOLD) /g$cQ=c
mergeSort(data, temp, l, mid); yF2|w=!
else %]NaHf
insertSort(data, l, mid - l + 1); 6{Y3-Pxg
if ((r - mid) > THRESHOLD) .}IxZM[}D
mergeSort(data, temp, mid + 1, r); ^6R
Sbi\
else @
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insertSort(data, mid + 1, r - mid); -M=#U\D
7|$cM7_r
for (i = l; i <= mid; i++) { #._%~}U
temp = data; .U}"ONd9e
} +9mE1$C
for (j = 1; j <= r - mid; j++) { jw63sn
temp[r - j + 1] = data[j + mid]; @c3GJ'"X
} Rdb[{Ruxb
int a = temp[l]; <X@XbM
int b = temp[r]; n-ZOe]3
for (i = l, j = r, k = l; k <= r; k++) { uu0"k<Tp
if (a < b) { Pnf|9?~$H
data[k] = temp[i++]; udw>{3>
a = temp; :
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} else { `| nC r
data[k] = temp[j--]; f3 _-{<FZ
b = temp[j]; [I6(;lq2
} ~)J]`el,Q
} R(YhVW_l
} |#_IAN
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/** hF m_`J&"
* @param data M"XILNV-~
* @param l ]M^k~Xa
* @param i G@$Y6To[
*/ bogw /)1
private void insertSort(int[] data, int start, int len) { ,Sz`$'^c
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); \tv^],^`
} x<&2`=
} Std?p{
i
} FXLY*eRk
} TpnJm%9`)t
6( #fGH&[
堆排序: RP!!6A6:
#fB&Hv #s7
package org.rut.util.algorithm.support; U(xN}Y?
RLy2d'DS
import org.rut.util.algorithm.SortUtil; 0}LBnV
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/** =f48[=
* @author treeroot 9E`WZo^.
* @since 2006-2-2 6t zUp/O
* @version 1.0 8bf_W3
*/ qDSZ:36
public class HeapSort implements SortUtil.Sort{ _:N+mEF
ub/Z'!
/* (non-Javadoc) `.oWmBey\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L@mNfLK
*/ o )\\(^ld
public void sort(int[] data) { h=?V)WSM
MaxHeap h=new MaxHeap(); PhUG}94
h.init(data); uGXN ciEp`
for(int i=0;i h.remove(); ]o!rK<
System.arraycopy(h.queue,1,data,0,data.length); nK!yu?mS
} e6G=Bq$
c#)!-5E~H
private static class MaxHeap{ ,)&ansN
r6,EyCWcCs
void init(int[] data){ sxG8jD
this.queue=new int[data.length+1]; +,;"?j6<p
for(int i=0;i queue[++size]=data; )Cas0~ RM
fixUp(size); c<k=8P
} \@\r`=WgB
} 2wCSjAWWh(
JD\yl[ac%
private int size=0; W;Pdbf"
3VI[*b
private int[] queue; S['rfD>9
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public int get() { m8j Q~OS
return queue[1]; st_.~m!/
} , 0hk)Vvr3
_DDknQP
public void remove() { c[IT?6J4
SortUtil.swap(queue,1,size--); `s )-
lI
fixDown(1); |2L|Zp&
} o"kVA;5<G
file://fixdown v|K,
private void fixDown(int k) { :D|5E>o(
int j; 54lU~ "
while ((j = k << 1) <= size) { kT@m*Etr{
if (j < size %26amp;%26amp; queue[j] j++; DPWt=IFU
if (queue[k]>queue[j]) file://不用交换 hSN{jl{L`
break; "_f~8f`y
SortUtil.swap(queue,j,k); 2uCw[iZM
k = j; mRurGaR
} xmM!SY>
} 'VMov
private void fixUp(int k) { dCb7sqJ%
while (k > 1) { ;c/|LXc\
int j = k >> 1; pftnFOLO
if (queue[j]>queue[k]) $q$G
break; ~cf*Oq
SortUtil.swap(queue,j,k); -n:~m
p
k = j; AT:L&~O.
} i?3~Gog
} " jBc5*
z [|:HS&
} Tqf:G4!
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} ,J$XVvwxF
**G5fS.^W
SortUtil: k#g` n3L
f,} (=
u
package org.rut.util.algorithm; a 23XrX
bo-AM]
import org.rut.util.algorithm.support.BubbleSort; &E?TR
A# E
import org.rut.util.algorithm.support.HeapSort; Vr^UEu.w?
import org.rut.util.algorithm.support.ImprovedMergeSort; Vsj1!}X:
import org.rut.util.algorithm.support.ImprovedQuickSort; W?:e4:Q
import org.rut.util.algorithm.support.InsertSort; /&i6vWMhP
import org.rut.util.algorithm.support.MergeSort; =#Z+WD-E
import org.rut.util.algorithm.support.QuickSort; o*t4zF&n
import org.rut.util.algorithm.support.SelectionSort; V+$^4Ht
import org.rut.util.algorithm.support.ShellSort; 0X<U.Sxn
d}w}VL8l
/** ymW? <\AD,
* @author treeroot u*S-Pji,x
* @since 2006-2-2 /'l"Us},^!
* @version 1.0 TOb(
*/ yg^ 4<A
public class SortUtil { ]3\%i2NM
public final static int INSERT = 1; `x:O&2
public final static int BUBBLE = 2; gTQc=,3l3
public final static int SELECTION = 3; FKH_o
public final static int SHELL = 4; KY'x;\0
g
public final static int QUICK = 5; &v/>P1Z
G
public final static int IMPROVED_QUICK = 6; |muZv!,E
public final static int MERGE = 7; vf@toYc[E
public final static int IMPROVED_MERGE = 8; iAr]Ed"9|
public final static int HEAP = 9; yno X=#`
xxQgX~'x
public static void sort(int[] data) { V<i_YLYmJe
sort(data, IMPROVED_QUICK); <~Oy3#{
} AX] cM)w
private static String[] name={ OQJ#>*?
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 6QYHPz
}; ujf]@L?
#z5$_z?_
private static Sort[] impl=new Sort[]{ so>jz@!EE
new InsertSort(), ]@6L,+W"
new BubbleSort(), 8~}~d}wW
new SelectionSort(), RI3GAd
new ShellSort(), Gspb\HJ^
new QuickSort(), pt%*Y.)az
new ImprovedQuickSort(), !"LFeqI$lr
new MergeSort(), 0O!A8FA0
new ImprovedMergeSort(), =.]{OT
new HeapSort() | Kq<}R
}; aT~=<rEDy
iOB*K)U1
public static String toString(int algorithm){ dAr=X4LE
return name[algorithm-1]; H1d2WNr[
} *AG01# ZF
J(Fk@{!F.*
public static void sort(int[] data, int algorithm) { FvXpqlp
impl[algorithm-1].sort(data); n#S?fsQN
} :I2spBx
) E*-
public static interface Sort { mM2DZ^"j(
public void sort(int[] data); EEP&Y?
} Od+nBJ
jpkKdQX)
public static void swap(int[] data, int i, int j) { jSQM3+`b
int temp = data; GQ 0(lS
data = data[j]; lxfv'A
data[j] = temp; ?BRZ){)
} 2t;3_C
} qV)hCc/ ~