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。 I&|J +B?#
插入排序: !t!\b9=
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package org.rut.util.algorithm.support; /m(v5v7(
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import org.rut.util.algorithm.SortUtil; [}Pi $at
/** jP"l5
* @author treeroot LV!<vakCK
* @since 2006-2-2 HMPb%'U~
* @version 1.0 DNy 6Kw
*/ 8AuOe7D9A
public class InsertSort implements SortUtil.Sort{ Q,<V)
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/* (non-Javadoc) oeIza<:=R
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o=y0=,:a?9
*/ _"688u'88
public void sort(int[] data) { vOi4$I~CJ
int temp; "6
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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); z"j]m_mH
} F<LRo}j"9Q
} *^Xtorqo
} ,RIC _26
B"=w9w]
} XCUU(H
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冒泡排序: qpXsQim$~
R.$1aqA}
package org.rut.util.algorithm.support; Xjs`iK=w
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import org.rut.util.algorithm.SortUtil; ?$Jj^/luD
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/** *dmS'/
* @author treeroot ~3,k8C"pRq
* @since 2006-2-2 rs+
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* @version 1.0 q>Kzl/~c.P
*/ n>\2_$uDI
public class BubbleSort implements SortUtil.Sort{ O6Mxp-
o#=@!m
/* (non-Javadoc) ^q)AO?_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =dDr:Y<@*
*/ LMTz/M
public void sort(int[] data) { ]o3K
int temp; EaUO>S
for(int i=0;i for(int j=data.length-1;j>i;j--){ #d;/Me
if(data[j] SortUtil.swap(data,j,j-1); 4"~l^yK
} Z|6,*XEc
} =Cg1I\
} L wP
} K0C3s
x_$`#m{hL5
} Zj5B}[,l\
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选择排序: >Pf\"%*
xnvG5
package org.rut.util.algorithm.support; O
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import org.rut.util.algorithm.SortUtil; Vh'H =J
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/** U2vM|7]VP
* @author treeroot ,Aw
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* @since 2006-2-2 RAB'%CY4
* @version 1.0 p4^&G/'
*/ `Y_G*b.Rm
public class SelectionSort implements SortUtil.Sort { z[+Sb;
g#b9xTGJ^
/* r2G38/K
* (non-Javadoc) Df5!z \dx
* B&>z&!}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (Qf. S{;
*/ HvLx
public void sort(int[] data) { o9]i
{e>L
int temp; "< })X.t
for (int i = 0; i < data.length; i++) { O
8XHaVLg3
int lowIndex = i; *~0U4kw+
for (int j = data.length - 1; j > i; j--) { l?)!^}Qc
if (data[j] < data[lowIndex]) { @RXkj-,eC#
lowIndex = j; b!oj3|9
} 9|NH5A"H.
} ?4cj"i
SortUtil.swap(data,i,lowIndex); \qz! v
} vo>i36
} XJe}^k
2KtK.2; 7
} a4\j.(w)$D
E{BX $R_8
Shell排序: YDYN#Ob(;
l!mx,O`
package org.rut.util.algorithm.support; gfJHB3@
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import org.rut.util.algorithm.SortUtil; )=pa*
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/** YF)k0bu&;
* @author treeroot d<Dm(
* @since 2006-2-2 / }Pj^^6A<
* @version 1.0 z)Lw\H^/
*/ lKG' KR.
public class ShellSort implements SortUtil.Sort{ )fQ1U
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/* (non-Javadoc) G j^*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lc\{47LwZ
*/
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public void sort(int[] data) { qPBOt;N
for(int i=data.length/2;i>2;i/=2){ )kD B*(?
for(int j=0;j insertSort(data,j,i); nrg$V>pD
} 2p~}<B
} OJiwI)a9
insertSort(data,0,1); lokKjs
} 9DdR"r'7
nh*6`5yj
/** ksf6O$
* @param data ZI.Czzx\=
* @param j +Jh1D_+!9
* @param i h@PE:=
*/ N}>[To3
private void insertSort(int[] data, int start, int inc) { 2Q 5-.2]
int temp; foUB/&Ee
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 0<93i
} -9Dr;2\
} :!Nx'F9a
} #>6Jsnv1
X0Wx\xDg[
} R@){=8%z
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快速排序: SY.ZEJcv
<nTZs`$LwL
package org.rut.util.algorithm.support; zx5#eMD
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import org.rut.util.algorithm.SortUtil; G=]ox*BY
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/** ?dPr HSy
* @author treeroot .N7<bt@~)
* @since 2006-2-2 [&g"Z"
* @version 1.0 >gDeuye
*/ WLA&K]
public class QuickSort implements SortUtil.Sort{ q@g#DP+C
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/* (non-Javadoc) (eAz
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~ #7@;C<nt
*/ 8@Bm2?$}g
public void sort(int[] data) { &(lQgi+^!
quickSort(data,0,data.length-1); P\WFm
} <HtGp6q
private void quickSort(int[] data,int i,int j){ =R<92v
int pivotIndex=(i+j)/2; }2Tq[rl~s
file://swap z'*"iaX<c
SortUtil.swap(data,pivotIndex,j); W1521:
ut#pg+#Q
int k=partition(data,i-1,j,data[j]); 5mS/,fs@
SortUtil.swap(data,k,j); k* v${1&
if((k-i)>1) quickSort(data,i,k-1); a@J/[$5
if((j-k)>1) quickSort(data,k+1,j); sY4q$Fq
2Z5_@Y
} )|_L?q#w!'
/** a?yU;IKJ
* @param data r.lHlHl
* @param i Wm}gnNwA
* @param j \E[6wB>uN%
* @return e{9~m
*/ \B^NdG5Y
private int partition(int[] data, int l, int r,int pivot) { M4D @G
do{ _a f $0!
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); cUr!U\X[
SortUtil.swap(data,l,r); na|sKE;{
} \KzH5 ?
while(l SortUtil.swap(data,l,r); @v#,SF {
return l; g/_0WW] }
} BeN]D
I\x9xJ4x
} 684d&\(s
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改进后的快速排序: &_u.q/~
ALV(fv$cD
package org.rut.util.algorithm.support; ,i1BoG
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import org.rut.util.algorithm.SortUtil; N:+)6a
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/** @%G?Nht]o
* @author treeroot w$Fg0JS
* @since 2006-2-2 X&kp1Ih<^
* @version 1.0 K7([Gc9
*/ DVVyWn[
public class ImprovedQuickSort implements SortUtil.Sort { ;b:'i&r
5\=
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private static int MAX_STACK_SIZE=4096; H\qZu%F'
private static int THRESHOLD=10; G |[{\
/* (non-Javadoc) O@4 J=P=w
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PR]b]=
*/ Wa7wV
9
public void sort(int[] data) { SZyORN
int[] stack=new int[MAX_STACK_SIZE]; N#ZWW6
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int top=-1; $dXx@6fP
int pivot; %B( rW?p&
int pivotIndex,l,r; Uqb]&2
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stack[++top]=0; ".%d{z}vz
stack[++top]=data.length-1; d#]hqy
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while(top>0){ #\`kg#&
int j=stack[top--]; ZX64kk+
int i=stack[top--];
)UM^#<-
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pivotIndex=(i+j)/2; 'A^q)hpax
pivot=data[pivotIndex]; 8#VD u(
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SortUtil.swap(data,pivotIndex,j); f*B-aj#
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file://partition } ck<R
l=i-1; r uGeN
r=j; M;,$
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do{ ]gg(Z!|iQ
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); (wM` LE(Ks
SortUtil.swap(data,l,r); b0YEIV<$
} :)D7_[i
while(l SortUtil.swap(data,l,r); =u ?aP}zc
SortUtil.swap(data,l,j); o.Rv<a5.L
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if((l-i)>THRESHOLD){ #XA`n@2Uoo
stack[++top]=i; g27'il
stack[++top]=l-1; 9aY8`B
} mHHlm<?]
if((j-l)>THRESHOLD){ BkGExz
stack[++top]=l+1; "I)zi]vk
stack[++top]=j; IlB8~{p_
} L/r_MtN
&=BzsBh
} ?q9]H5\
file://new InsertSort().sort(data); [#q]B=JB
insertSort(data); -PAEJn5$O
} |Ia9bg'1U
/** p/?o^_s
* @param data 8"9&x}
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*/ >>,G3/Zd*
private void insertSort(int[] data) { F{!pii5O9
int temp; No} U[u.O
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); z__?k Y
} |Z<\k x
} n)98NSVDbT
} ,`Y$}"M4
>#x[qX
} =uH2+9.
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归并排序: ]FZPgO'G
y'`/^>.
package org.rut.util.algorithm.support; '2*OrY
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import org.rut.util.algorithm.SortUtil; [i/!ovcY
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/** NBY|U{.g
* @author treeroot X<}}DZSu a
* @since 2006-2-2 Ly+UY.v"
* @version 1.0 _E`+0;O
*/ <3x%-m+p4
public class MergeSort implements SortUtil.Sort{ 32<D9_
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/* (non-Javadoc) mGj)Zrx>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #~|k EGt
*/ P,{Q k~iu
public void sort(int[] data) { PY.K_(D
int[] temp=new int[data.length]; hOUH1m.
mergeSort(data,temp,0,data.length-1); 'UIFP#GtFO
} *G>
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#@$80eFq
private void mergeSort(int[] data,int[] temp,int l,int r){ *uhQP47B
int mid=(l+r)/2; p35=CX`T.
if(l==r) return ; I[Lg0H8
mergeSort(data,temp,l,mid); /;#kV]nF
mergeSort(data,temp,mid+1,r); &,k!,<IF
for(int i=l;i<=r;i++){ M`H#Qo5/
temp=data; 78uImC*o
} q2vD)r
int i1=l; 1N8] ~j
int i2=mid+1; {,Q )D$i
for(int cur=l;cur<=r;cur++){ phuiLW{&
if(i1==mid+1) *9EwZwE_K
data[cur]=temp[i2++]; Yt]`>C[|D
else if(i2>r) 2!J#XzR0W
data[cur]=temp[i1++]; II=`=H{
else if(temp[i1] data[cur]=temp[i1++]; 1@}F8&EZ
else <|}Z6Ti
data[cur]=temp[i2++]; `Npa/Q
} xo_STLAw
} rMDvnF
rF-SvSj}
} *#mmk1`
RW. qw4
改进后的归并排序: 9efDM
&-yRa45?
package org.rut.util.algorithm.support; K
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import org.rut.util.algorithm.SortUtil; SN}K=)KF#
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/** S{+t>en
* @author treeroot x|0C0a\"A
* @since 2006-2-2 2`$*HPj+G
* @version 1.0 gT+g@\u[
*/ V#7,vas
public class ImprovedMergeSort implements SortUtil.Sort { NZB*;U~t
c,~uurVi
private static final int THRESHOLD = 10; bkV<ZUW|;
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/* [Km{6L&
* (non-Javadoc) Dt:
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* pux IJ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rFg$7
*/ o72r `2
public void sort(int[] data) { -qIi.]/f"9
int[] temp=new int[data.length]; f CU]
mergeSort(data,temp,0,data.length-1); *#Cx-J
} aj&L
Z DD6
t{]Ew4Y4%O
private void mergeSort(int[] data, int[] temp, int l, int r) { U6M~N0)Yr
int i, j, k; ;
j!dbT~5
int mid = (l + r) / 2; U#[&(
if (l == r) 1!v{#w{u7
return; S;% &X
if ((mid - l) >= THRESHOLD) ,<Q
mergeSort(data, temp, l, mid); u5oM;#{@-
else |2j,
insertSort(data, l, mid - l + 1); =
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if ((r - mid) > THRESHOLD) >a?Bk4w
mergeSort(data, temp, mid + 1, r); v1OVrk>s>
else fvC,P#z'|
insertSort(data, mid + 1, r - mid); Ss>pNH@c
|U|>YA1[b
for (i = l; i <= mid; i++) { J\@6YU[A
temp = data; R.^]{ 5
} f*o
for (j = 1; j <= r - mid; j++) { Njc@5*rJ&
temp[r - j + 1] = data[j + mid]; VHD+NY/
} WywS1viD
int a = temp[l]; BPO5=]W 7
int b = temp[r]; X0;u7g2Yz
for (i = l, j = r, k = l; k <= r; k++) { =0ZRGp
if (a < b) { !?P8[K
data[k] = temp[i++]; xuK"pS
a = temp; \?xM%(:<Q
} else { V"YeF:I
data[k] = temp[j--]; A(FnU:
b = temp[j]; FCEy1^u
} %~!4DXrMk
} 1+FVM\<&
} MGR:IOTa
YRu@;
`
/** ojd0um6I{
* @param data ~1uQyt
* @param l >yC=@Uq+
* @param i U,=f};
*/ X4V>qHV72
private void insertSort(int[] data, int start, int len) { 5#DMizv6
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); bJ^h{]
} \Bo%2O%4
} !D??Y^6bI
} Nz
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} ukiWNF/
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堆排序: F)^0R%{C
:21d
package org.rut.util.algorithm.support; RA0;f'"`
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import org.rut.util.algorithm.SortUtil; oYqHl1cs
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/** B>53+GyMV
* @author treeroot ok:uTeJI
* @since 2006-2-2 S1QMS
* @version 1.0 uM2@&)u
*/ AF'<
public class HeapSort implements SortUtil.Sort{ %(YQ)=w
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/* (non-Javadoc) /|?$C7%a\D
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h&0zR#t
*/ cC/h7odY
public void sort(int[] data) { PgkU~68`
MaxHeap h=new MaxHeap(); Ob$``31{s
h.init(data); w(oK
for(int i=0;i h.remove(); e5'I W__
System.arraycopy(h.queue,1,data,0,data.length); h4;kjr}h}
} jK w
96
G2`z?);1b
private static class MaxHeap{ ~5KcbGD~
`c
void init(int[] data){ y!FO
this.queue=new int[data.length+1]; | b'Ut)E
for(int i=0;i queue[++size]=data; 6<lo0PQ"Z
fixUp(size); _S r}3
} Geq]wv8
} l2
.S^S
`2.c=,S{
private int size=0; 1VJ${\H]
p D<w@2K
private int[] queue; $.`o
ER"69zQg|2
public int get() { ofy"SM
return queue[1]; CWdsOS=
} T fLqxioqZ
J"r?F0
public void remove() { (D>_O$o
SortUtil.swap(queue,1,size--); V^_A{\GK
fixDown(1); {-Y;!
} :iE b^F}
file://fixdown `ASDUgx Mq
private void fixDown(int k) { J K/{IkF
int j; :;{M0
while ((j = k << 1) <= size) { Btm,'kBG
if (j < size %26amp;%26amp; queue[j] j++; 9j2t|D4uT
if (queue[k]>queue[j]) file://不用交换 @c|=onx5
break; 2) X#&IE
SortUtil.swap(queue,j,k); .6wPpL G?{
k = j; & zDuh[j}
} f.6>6%l
} dNe!X0[
private void fixUp(int k) { iWCYK7c@.-
while (k > 1) { xC)bW,%
int j = k >> 1; 6GxLaI
if (queue[j]>queue[k]) &S >{9y%
break; zdYH9d>D
SortUtil.swap(queue,j,k); p2STy\CS
k = j; h@%Xy(/m'
} 6 >kU Lp
} "^]gI Qc
D+7xMT8pqH
} CS[]T9|_
{++EX2
} a/J<(sak~X
8C3k:
D[
SortUtil: tMl y*E
rq%]CsRY5
package org.rut.util.algorithm; Ln>!4i+-B)
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import org.rut.util.algorithm.support.BubbleSort; i2<z"v63
import org.rut.util.algorithm.support.HeapSort; u&zY>'}zm
import org.rut.util.algorithm.support.ImprovedMergeSort; 5 ^{~xOM5
import org.rut.util.algorithm.support.ImprovedQuickSort; *Soi
import org.rut.util.algorithm.support.InsertSort; 'kd}vq#|
import org.rut.util.algorithm.support.MergeSort; 63fYX"
import org.rut.util.algorithm.support.QuickSort;
)@wC6Ij
import org.rut.util.algorithm.support.SelectionSort; e;.,x 5+
import org.rut.util.algorithm.support.ShellSort; X$kLBG[o_
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/** !5*VBE\
* @author treeroot p4VARAqi
* @since 2006-2-2 I*rUe#$
* @version 1.0 kvbZx{s
*/ !JCs'?A
public class SortUtil { 7By7F:[ b
public final static int INSERT = 1; ?|M-0{
public final static int BUBBLE = 2; v-8>@s jy8
public final static int SELECTION = 3; OUulG16kK
public final static int SHELL = 4; un "I
public final static int QUICK = 5; LK'(OZ
public final static int IMPROVED_QUICK = 6; H{}&|;0
public final static int MERGE = 7; E*'Y xI
public final static int IMPROVED_MERGE = 8; Zmu
public final static int HEAP = 9; B}"R@;N
i%i~qTN
public static void sort(int[] data) { opa/+V3E4
sort(data, IMPROVED_QUICK); yy3rh(ea
} I!/32* s1t
private static String[] name={ zhJeTctRz
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" PD&e6;rj;
}; HoQb.Z
YIe1AF}
private static Sort[] impl=new Sort[]{ ZF7@ b/-me
new InsertSort(), k3Yu"GY^
new BubbleSort(), d@3DsE.{i
new SelectionSort(), l,@>J9}Se
new ShellSort(), uaIAVBRcS
new QuickSort(), 0,hs%x>v
new ImprovedQuickSort(), U%vTmdOY
new MergeSort(), <'=!f6Wh
new ImprovedMergeSort(), 971=OEyq*
new HeapSort() \,;glY=M!
}; ".}R$W
~n
'A1
public static String toString(int algorithm){ I0
t#{i
return name[algorithm-1]; HI5NWdfRl
} t'_EcYNS
2}^=NUM\NX
public static void sort(int[] data, int algorithm) { {6u)EJ
impl[algorithm-1].sort(data); J^8j|%h%e
} Dl>tF?=
J4qk^1m.
public static interface Sort { 5o6IpF0V
public void sort(int[] data); hb3n-
rO
} k+_>`Gre}
O*N:A[eW
public static void swap(int[] data, int i, int j) { jIKg* @
int temp = data; n@pwOHQn<|
data = data[j]; ed'[_T}T3t
data[j] = temp; c]pz&
} QQAEG#.5
} 5*z>ez2YQ7