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。 hvyN8We
插入排序: K9 q~Vf
:tqjm:
package org.rut.util.algorithm.support; MUrY >FYgx
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import org.rut.util.algorithm.SortUtil; IMZKlU3
/** 'dzp@-\
* @author treeroot 07|NPS
* @since 2006-2-2 B<LavX>F
* @version 1.0 %&XX*&
q
*/ kTz
public class InsertSort implements SortUtil.Sort{ iV5I
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/* (non-Javadoc) *eP4dGe&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [}2.CM
*/ N:: ;J
public void sort(int[] data) { mSfhl(<L
int temp; l.x }I"tf
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); i[pf*W0g
} !iVFzG
@m
} )ta5y7np
} ([Aq
ry
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} @:&+wq_>A^
cPcV[6)5K9
冒泡排序: C=IH#E=
S nHAY<
package org.rut.util.algorithm.support; l5[xJH
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import org.rut.util.algorithm.SortUtil; !r*;R\!n2
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/** bJm0
* @author treeroot ~ ""MeaM8[
* @since 2006-2-2 q4i8Sp>
* @version 1.0 j6vZ{Fx;w
*/ $:[BB,$
public class BubbleSort implements SortUtil.Sort{ #!jRY!2Vt
>!1 f`
/* (non-Javadoc) s8[9YfuW
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4C%>/*%8>
*/ ^-u HdafP
public void sort(int[] data) { w<Cmzkf
int temp; rcx;3Vne
for(int i=0;i for(int j=data.length-1;j>i;j--){ S I7B6c
if(data[j] SortUtil.swap(data,j,j-1); P|4E1O
} xbC8Amo;8"
} UD2<!a'T
} +^?-}v
} 2g6_qsqi
//lZmyP?
} Iv72;ZCh?6
41o!2(e$
选择排序: ,6O9#1A&i
@/~k8M/
package org.rut.util.algorithm.support; e6HlOGPVQH
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import org.rut.util.algorithm.SortUtil; _]UDmn[C
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/** ;j U-<
* @author treeroot 9+I/y,aC
* @since 2006-2-2 Nf 'dT;s.N
* @version 1.0
YeC,@d[
*/ Y@H,Lk
public class SelectionSort implements SortUtil.Sort { I`W-RWZ
g[au-.:
/* yvWzc
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* (non-Javadoc) 0DB<hpC:5
* BhW]Oq&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i @9Qb
*/ I"sobZ`
public void sort(int[] data) { `qDz=,)WP
int temp; ,{?bM
for (int i = 0; i < data.length; i++) { ] ZGvRA&
int lowIndex = i; ckN(`W,xp
for (int j = data.length - 1; j > i; j--) { $&=;9="
if (data[j] < data[lowIndex]) { &n]Z1e}5
lowIndex = j; 3Ge <G
} AKKU-5
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} u45h{i-e
SortUtil.swap(data,i,lowIndex); o|qeh<2=x
} U.Chf9a-
} 5u)^FIBj
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} V\K
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Shell排序: }gi1?a59
"gN* J)!x
package org.rut.util.algorithm.support; R%N#G<^R
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import org.rut.util.algorithm.SortUtil; Z"~6yF
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/** P}+|`>L
* @author treeroot }'V'Y[
* @since 2006-2-2 ,rFLpQl
* @version 1.0 #~URLN
*/ ro&Y7m
public class ShellSort implements SortUtil.Sort{ 9hR:y.
K~Au?\{
/* (non-Javadoc) Wqs.oh
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [> &+*c
*/ ?X_0Iy}1
public void sort(int[] data) { Fm$n@RbX
for(int i=data.length/2;i>2;i/=2){ L2>?m`wp
for(int j=0;j insertSort(data,j,i); h w ;d m
} *T>#zR{
} =!S@tuY
insertSort(data,0,1); ADyNNMcx
} Tt <-<oyU.
!v5sWVVR
/** 86[RH!e
* @param data m{lRFKx>s
* @param j 1x\W521
* @param i &Qq/Xi,bZ
*/ {7TJgS
private void insertSort(int[] data, int start, int inc) { >b4YbLkI#
int temp; $: 4mOl
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); >OKS/(I0
} &FJU%tFA
} BBU84s[
} R5NRCI
|P. =
} n$hqNsM
D)*_{
快速排序: qN1e{T8u
\9>g;qPg}
package org.rut.util.algorithm.support; #>E3' 5b
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import org.rut.util.algorithm.SortUtil; f=_Bx2ub
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/** dWW-tHv#
* @author treeroot PK-}Ldj
* @since 2006-2-2 q-3J.VLJ5H
* @version 1.0 G {pP}
*/ kol,Qs
public class QuickSort implements SortUtil.Sort{ |%:qhs,
)~?S0]j}
/* (non-Javadoc) !X\sQNp
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0{"dI;b%
*/ np`gcj#
public void sort(int[] data) { k5fH;
quickSort(data,0,data.length-1);
'{j\0
} ui.QYAYaV
private void quickSort(int[] data,int i,int j){ ]s*[Lib
int pivotIndex=(i+j)/2; m0BG9~p|
file://swap %/tGkS6
SortUtil.swap(data,pivotIndex,j); w>z8c3Dq}
=0PNHO\gl
int k=partition(data,i-1,j,data[j]); ^B<PD]
SortUtil.swap(data,k,j); }j5R@I6P
if((k-i)>1) quickSort(data,i,k-1); /\ ,_P
if((j-k)>1) quickSort(data,k+1,j); f
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{p#l!P/
} K)9j
je
/** taWirqd9
* @param data 8"?Vcw&
* @param i rSF;Lp)}
* @param j m0%iw1OsH%
* @return r{R[[]p
*/ w!B,kqTG
private int partition(int[] data, int l, int r,int pivot) { )T.pjl
do{ M73VeV3DL
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Y'<uZl^aX
SortUtil.swap(data,l,r); B
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} ]Efh(Gb]
while(l SortUtil.swap(data,l,r); +?"HTDBE||
return l; #|{BGVp
} i_[
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} (1kn):
] 689 Q%D
改进后的快速排序: H7z>S G0
AQnJxIL:
package org.rut.util.algorithm.support; ~J:$gu~`
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import org.rut.util.algorithm.SortUtil; a2cx
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/** a!c/5)v(
* @author treeroot eEW roF
* @since 2006-2-2 7~!I2DV_
* @version 1.0 ==-7F3QP
*/ l#2r.q^$|
public class ImprovedQuickSort implements SortUtil.Sort { #[k~RYS3
o ;[C(OS
private static int MAX_STACK_SIZE=4096; r!=]Q}`F
private static int THRESHOLD=10; ;1{iF2jZ:
/* (non-Javadoc) %Lh-aP{[e
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u|_LR5S!j
*/ kz7vbY
public void sort(int[] data) { 2cs?("8e%
int[] stack=new int[MAX_STACK_SIZE]; dJdD"xj
D_l/Gxdpr
int top=-1; q5:0&:m$4$
int pivot; wo7N7R5
int pivotIndex,l,r; AI^AK0.L
6pM"h5hA
stack[++top]=0; W\I$`gyC/
stack[++top]=data.length-1;
Z #.GI
i#L6UKe:Q
while(top>0){ 1?D8|<
int j=stack[top--]; "jl1.Ah
int i=stack[top--]; {&\J)oZ
X;s3y{ku
pivotIndex=(i+j)/2; t/v@vJ`vSH
pivot=data[pivotIndex]; nu4Pc
=,&u_>Dp
SortUtil.swap(data,pivotIndex,j); G]L0eV
jGk7=}nw
file://partition ^#a#<8Jz
l=i-1; "?oo\op
r=j; ?dp-}3/G
do{ %-h7Z3YcN
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ~u_K&X
SortUtil.swap(data,l,r); 17V\2=Io
} ]uBT &
while(l SortUtil.swap(data,l,r); 9O),/SH;:
SortUtil.swap(data,l,j); g>6:CG"
HO266M
if((l-i)>THRESHOLD){ 89*S?C1
stack[++top]=i; bh= \
stack[++top]=l-1; J>f
/u:.
} 3q'K5}
_
if((j-l)>THRESHOLD){ +O|_P`HBoI
stack[++top]=l+1; ]}nu9z<
stack[++top]=j; v
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} EHH|4;P6
IT8B~I\OY
} r :fwrC
file://new InsertSort().sort(data);
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insertSort(data); 68vxI|EZ
} ?~F]@2)5w
/** 2"T8^r|U
* @param data 98D{{j92
*/ X?KGb{
private void insertSort(int[] data) { Y
h^WTysBn
int temp; 2B6^]pSk
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); EG F:xl
} 9|J8]m?x
} @;||peU
} 1k!D0f3qb
h=X7,2/<
} 5T!&r
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归并排序: 1t0bUf;(M
i{<8
hLO
package org.rut.util.algorithm.support; ! a86iHU
=L:[cIRrT;
import org.rut.util.algorithm.SortUtil; Ly^E& ,)
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/** 5\uNEs$T
* @author treeroot *}+R{
* @since 2006-2-2 FpP\-+Sl
* @version 1.0 ,)Yao;Cvd
*/ IJ hxE
public class MergeSort implements SortUtil.Sort{ MNkKy(Za
'"Bex`
/* (non-Javadoc) V%i<;C
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Zkw J.SuU
*/ B#J{ F
public void sort(int[] data) { $`E4m8fX
int[] temp=new int[data.length]; V78Mq:7d
mergeSort(data,temp,0,data.length-1); x*:n4FZ7b
} P1dN32H
o
!?yxh/>lM
private void mergeSort(int[] data,int[] temp,int l,int r){ gs$3)t
int mid=(l+r)/2; _Mlhumt
if(l==r) return ; x2Ha&
mergeSort(data,temp,l,mid); aZ8h[#]7
mergeSort(data,temp,mid+1,r); ?(]a*~rx
for(int i=l;i<=r;i++){ l#b:^3
temp=data; 4+)Zk$E
} S*;#'j)4+
int i1=l; ERk kSTp
int i2=mid+1; J =b*
for(int cur=l;cur<=r;cur++){ rU],J!LF
if(i1==mid+1) ZQ@3P7T
data[cur]=temp[i2++]; 7TP$
else if(i2>r) #g,H("Qy({
data[cur]=temp[i1++]; [`q.A`Fd
else if(temp[i1] data[cur]=temp[i1++]; bSQ_"
else X )I/%{
data[cur]=temp[i2++]; 3QH(4N
} _\p`4-.V
} wyp{KIV
STv(kQs
} \{kHSV%z
EH(tUwY%{
改进后的归并排序: b7Yq_%+
%cS#+aK6M'
package org.rut.util.algorithm.support; ,KT<4
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import org.rut.util.algorithm.SortUtil; QI.t&sCh5
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/** yj>){NcX
* @author treeroot P1$f}K}
* @since 2006-2-2 }Bd_:#.mw
* @version 1.0 xOhRTxic
*/ V!mWn|lf
public class ImprovedMergeSort implements SortUtil.Sort { "@(58nk
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private static final int THRESHOLD = 10; OthG7+eF
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/* -P2 @mx%
* (non-Javadoc) {d8^@UL
* k@7kNMl
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) anLbl#UV
*/ u]R$]&<
public void sort(int[] data) { {798=pC<.
int[] temp=new int[data.length]; t`uc3ta"9
mergeSort(data,temp,0,data.length-1); (yfXMp,x
} r9<V%PHv
[
ynuj3G
V
private void mergeSort(int[] data, int[] temp, int l, int r) { av)?>J~;
int i, j, k; Sq<3Rw
int mid = (l + r) / 2; {Wh BoD
if (l == r) (Bsw/wv
return; STw oYn
if ((mid - l) >= THRESHOLD) bea|?lK
mergeSort(data, temp, l, mid); t~q?lT
else )TM!ms+K
insertSort(data, l, mid - l + 1); %U-Qsy8|D)
if ((r - mid) > THRESHOLD) $]Jf0_
mergeSort(data, temp, mid + 1, r); 6I"C~&dt
else A^8x1ydZ
insertSort(data, mid + 1, r - mid); Mg+4huT
-gB{:UYi3
for (i = l; i <= mid; i++) { !1("(Eb
temp = data; _$!`VA%
} pVY4q0@
for (j = 1; j <= r - mid; j++) { D]jkR} t
temp[r - j + 1] = data[j + mid]; gbJG`zC>U
} &u("|O)w$
int a = temp[l]; sLNNcj(Cy>
int b = temp[r]; Y4`QK+~fH
for (i = l, j = r, k = l; k <= r; k++) { V>AS%lXj
if (a < b) { JfSdUWxT
data[k] = temp[i++]; {b[tA,
>
a = temp; hw*1g m
} else {
C[R`Ml
data[k] = temp[j--]; +eC3?B8rN
b = temp[j]; uC)Zs, _5
} zqY)dk
} 8+&gp$a$
} 2!BsEvB(
6oYIQ'hc
/** pG~'shD~Dn
* @param data .ByU
* @param l b22LT52
* @param i pcNSL'u+
*/ kwOeHdV^
private void insertSort(int[] data, int start, int len) { y^SyhG,V[
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ;c$@@l
} 7r['
} 1EQvcw#
} 1c/
X
} K|Om5
p
tR5tPPw
堆排序: K\~v&
zs0hXxTY:
package org.rut.util.algorithm.support; G8noQ_-
2Sjt=LOc="
import org.rut.util.algorithm.SortUtil;
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/** .8:+MW/
* @author treeroot M.S
s:ttj
* @since 2006-2-2 svqvG7
* @version 1.0 Vli3>K&
*/ -(
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public class HeapSort implements SortUtil.Sort{ O<>#>[
@"w2R$o
/* (non-Javadoc) v[smQO
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VE*j*U
j
*/ _!%M%
public void sort(int[] data) { *Er? C;
MaxHeap h=new MaxHeap(); qv$!\ T
h.init(data); H }B2A"
for(int i=0;i h.remove(); Jl_~_Z
System.arraycopy(h.queue,1,data,0,data.length); r,Ds[s)B
} v~f'K3fLp
<&6u]uKrW
private static class MaxHeap{ D,E$_0
4QO/ff[ o
void init(int[] data){ $e*B:}x}
this.queue=new int[data.length+1]; l^
Rm0t_
for(int i=0;i queue[++size]=data; JCNk\@0i*
fixUp(size); l1|~
} }I]W'<jY
} /h7.oD8CU
P2t_T'R}
private int size=0; ydB$4ZB3[
)d:K:YXt
private int[] queue; g#|oif9o
5a6VMqQ6
public int get() { @UV{:]f~e
return queue[1]; BKX9SL]
} xG8`'SNY
0U%Xm[:
public void remove() { |/*pT1(&
SortUtil.swap(queue,1,size--); /LF3O~Go
fixDown(1); C 0>=x{,v
} ,z G(u 1
file://fixdown %<AS?Ry
private void fixDown(int k) { W_%W%i|
int j; ^4 8\>-Q\
while ((j = k << 1) <= size) { e"~)Utk
if (j < size %26amp;%26amp; queue[j] j++; g Jk[Ja
if (queue[k]>queue[j]) file://不用交换 q1w|'V
break; ,z[(k"
SortUtil.swap(queue,j,k); 3}j1RYtz
k = j; Za0gs @$
} St2Q7K5s{
} VKNp,Lf
private void fixUp(int k) { `R0Y+#$8h
while (k > 1) { vtZ?X';wh
int j = k >> 1; >D~w}z/fk
if (queue[j]>queue[k]) 1AT'S;`
break; pqH4w(;
SortUtil.swap(queue,j,k); FQ!Oxlq,Q
k = j; c|Y!c!9F
} {-h, ZdH^
} fnWsm4
Z\' wm'
} PtqGX=u
8 URj1 W
} :!']p2B
:~D];m
SortUtil: U!0E_J
hbfsHT
package org.rut.util.algorithm; ;_N"Fdl
[;FofuZ
import org.rut.util.algorithm.support.BubbleSort; ?@DNsVwb
import org.rut.util.algorithm.support.HeapSort; nj
import org.rut.util.algorithm.support.ImprovedMergeSort; E(;i>
import org.rut.util.algorithm.support.ImprovedQuickSort; x2m]Us@LIU
import org.rut.util.algorithm.support.InsertSort; LipxAE?O
import org.rut.util.algorithm.support.MergeSort; &[~[~m|
import org.rut.util.algorithm.support.QuickSort; `.8UKSH+
import org.rut.util.algorithm.support.SelectionSort; V^2-_V]8
import org.rut.util.algorithm.support.ShellSort; \K}aQKB/j
8YKQItK
/** o:9$UV[
* @author treeroot B2(,~^39
* @since 2006-2-2 b2s~%}T
* @version 1.0 cix36MR_
*/ f?maa5S
public class SortUtil { ^j=bObaX
public final static int INSERT = 1; ${>DhfF
public final static int BUBBLE = 2; JGgxAd{L
public final static int SELECTION = 3; B9^R8|V
public final static int SHELL = 4; jA<T p}$!
public final static int QUICK = 5; n_9x"m$
public final static int IMPROVED_QUICK = 6; lhxdx
public final static int MERGE = 7; s!de2z
public final static int IMPROVED_MERGE = 8; 8lb-}=
public final static int HEAP = 9; <xqba4O
{ 8p\Y
public static void sort(int[] data) { SK-W%t
sort(data, IMPROVED_QUICK); v)+@XU2wZ
} "Yby
private static String[] name={ !+KhFC&Py
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" eT-9
}; {(Fe7,.S3
t!~S9c
private static Sort[] impl=new Sort[]{ + Kk@Q
new InsertSort(), u|OtKq
new BubbleSort(), :1MMa6
new SelectionSort(), .`J:xL%Z
new ShellSort(), GO~k '
new QuickSort(), gl
"_:atW
new ImprovedQuickSort(), " '[hr$h3
new MergeSort(), }dKLMNqPA
new ImprovedMergeSort(), xqv[?
?
new HeapSort() .Q[yD<)Ubs
}; qd8pF!u|#
)5G QJiY
public static String toString(int algorithm){ 1.0J2nZpt
return name[algorithm-1]; {i;6vRr
} 7"K^H]6u30
z6cYC,
public static void sort(int[] data, int algorithm) { mp:m`sh*i
impl[algorithm-1].sort(data); ]nc2/S%
} d1bhJK
w+=Q6]FxJ
public static interface Sort { p:tN642
public void sort(int[] data); km4g}~N</
} 9I kUZW
jCQho-1QN
public static void swap(int[] data, int i, int j) { K(3&27sGN
int temp = data; Y|RdzCM
data = data[j]; |X 3">U +-
data[j] = temp; On%,l
} )E-E0Hl>7
} YxyG\J\|,