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。 1[#
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插入排序: zPA>af~Ej
u4xA'X'~R
package org.rut.util.algorithm.support; Z_!9iA:X
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import org.rut.util.algorithm.SortUtil; {8W |W2o$!
/** ur`V{9g
* @author treeroot 9cbB[c_.
* @since 2006-2-2 0YHYx n
* @version 1.0 3dY6;/s
*/ p\)h",RkA
public class InsertSort implements SortUtil.Sort{ @nW'(x(
L7[X|zmy*x
/* (non-Javadoc) E'fX&[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @)06\h
*/ Q,O]x#
public void sort(int[] data) { <6gU2@1
int temp; M`q#,Y?3^I
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); J~:kuf21
} 2%*|fF}I
} :nTkg[49pJ
} )8\Z=uC
Vc{/o=1u
} Wa@6VY
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冒泡排序: *E$H;wKs8
&AN%QhI
package org.rut.util.algorithm.support; l'P[5'.
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import org.rut.util.algorithm.SortUtil; WJP`0f3
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/** '$lw[1
* @author treeroot d9ZDpzxB
* @since 2006-2-2 7=AO^:=bx
* @version 1.0 C[^a/P`i
*/ <`^>bv9
public class BubbleSort implements SortUtil.Sort{ )vxVg*.Ee
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/* (non-Javadoc) vBV"i9n
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mq>*W'M
*/ -_:JQ
public void sort(int[] data) { YL_!#<k@
int temp; 5Xla_@WLW
for(int i=0;i for(int j=data.length-1;j>i;j--){ oM m/!Dc
if(data[j] SortUtil.swap(data,j,j-1); ]ZBgE\[
} `,<>){c|
} !<JG&9ODP
} ^$3w&$K*
} a^(S!I
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} ?yda.<"g9Y
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选择排序: D}3cW2!9
wpJ^}+kF
package org.rut.util.algorithm.support; 9L UP{(uq
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import org.rut.util.algorithm.SortUtil; L+`}euu5
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/** 47$-5k30
* @author treeroot ">v_uq a
* @since 2006-2-2 C _k_D
* @version 1.0 im_0ur&'
*/ -uS7~Ww.a
public class SelectionSort implements SortUtil.Sort { ZzwZ,(
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/* r5<e}t-
* (non-Javadoc) rGP?
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* U*c{:K-C
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jFK9?cLT
*/ +K @J*W 1
public void sort(int[] data) { E}E7VQjM
int temp; !dYX2!lvT
for (int i = 0; i < data.length; i++) { p2M?pV
int lowIndex = i; EC:x,i
for (int j = data.length - 1; j > i; j--) { sP=2NqU3Q
if (data[j] < data[lowIndex]) { BUboP?#%)
lowIndex = j; Ji)a%j1V9
} X,Q6
} |ij W_r
SortUtil.swap(data,i,lowIndex); _r^G%Mvy|
} ]ys4
} RJ7/I/yD|
rmAP&Gw I
} 1L(Nfkh
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Shell排序: !~VR|n-
mDe+ M{/
package org.rut.util.algorithm.support; Ynt&cdK9
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import org.rut.util.algorithm.SortUtil; 5Od(J5`
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/** }*{\)7g
* @author treeroot 8*Nt&`@
* @since 2006-2-2 gs<qi'B
* @version 1.0 #z1ch,*3;
*/ KD<; ?oN<O
public class ShellSort implements SortUtil.Sort{ *]DJAF]
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/* (non-Javadoc) 2Q;Y@%G
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Bwi[qw
*/ (urfaZ;@+
public void sort(int[] data) { Vtc)/OH
for(int i=data.length/2;i>2;i/=2){ *RqO3=
for(int j=0;j insertSort(data,j,i); {{#a%O
} !SD [6Z.R
} ML9T(th6v
insertSort(data,0,1); yQQDGFTb!=
} {
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CgPZvB[
/** :@z5& h
* @param data *X=f
* @param j \?Oly171
* @param i _tR.RAaa"
*/ 4jZi62
private void insertSort(int[] data, int start, int inc) { jd*%.FDi{
int temp; ?yd(er<_f
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 9_CA5?y$:
} Ozh^Q$>u
} |rms[1<_
} #uDBF
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} k%4A::=
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快速排序: yz&q2
Qe=Q8cT
package org.rut.util.algorithm.support; O( sFs1
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import org.rut.util.algorithm.SortUtil; VHY<(4@
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/** OYRR'X.E
* @author treeroot vN6]6nUOiT
* @since 2006-2-2 ."#jN><t
* @version 1.0 h0EGhJs
*/ m6ZbYF-7W
public class QuickSort implements SortUtil.Sort{ IUBps0.T\
wx?{|
/* (non-Javadoc) a[{QlD^D
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7>e~i,
*/ }'M1(W
public void sort(int[] data) { [HZCnO|N
quickSort(data,0,data.length-1); (nP*
} J\8l%4q3
private void quickSort(int[] data,int i,int j){ 4Hd@U&E
int pivotIndex=(i+j)/2; 7=ga_2
file://swap T`2fPxM:cZ
SortUtil.swap(data,pivotIndex,j); PXQ9P<m
&Bdt+OQ ;
int k=partition(data,i-1,j,data[j]); <raqp Oo&
SortUtil.swap(data,k,j); b<H6D}
if((k-i)>1) quickSort(data,i,k-1); jU9zCMyNF
if((j-k)>1) quickSort(data,k+1,j); }_D5, k
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} b-=[(]_$h
/** '9F{.]
* @param data z E7ocul
* @param i +cOI`4`$
* @param j eVK<%r=
* @return Q24:G
*/ QvQf@o
private int partition(int[] data, int l, int r,int pivot) { `?|]: 7'<
do{ M6d w~0e
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); %'~<:>:"E
SortUtil.swap(data,l,r); ]j#$. $q
} a0j.\g
while(l SortUtil.swap(data,l,r); dfkTDG+
return l; #dm@%~B{.
} b2@x(5#
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} F vk:c-
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改进后的快速排序: <rI$"=7
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package org.rut.util.algorithm.support; a} fS2He
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import org.rut.util.algorithm.SortUtil; (uxQBy
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/** _ G*x:<
* @author treeroot 3g
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* @since 2006-2-2 TF3q?0
* @version 1.0 }8]uZ)[p=
*/ 5J#gJFA
public class ImprovedQuickSort implements SortUtil.Sort { nv[Sb%/
,* vnt6C*
private static int MAX_STACK_SIZE=4096; s3RyLT
private static int THRESHOLD=10; '\mZ7.Jj
/* (non-Javadoc) 9}Ave:X^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {3uSg)
*/ Wjk;"_"gd
public void sort(int[] data) { iOXP\:mPo
int[] stack=new int[MAX_STACK_SIZE]; $ u.T1v
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int top=-1; s!!t
int pivot; eii7pbc
int pivotIndex,l,r; m%(JRh
PC7.+;1
stack[++top]=0; )Ua2x@j'C@
stack[++top]=data.length-1; 5GxM?%\
9wJmX<Rm
while(top>0){ [hj'Yg 8{
int j=stack[top--]; OQ*. ho
int i=stack[top--]; %((3'le
K}(n;6\
pivotIndex=(i+j)/2; d_qVk4h\
pivot=data[pivotIndex]; '\YhRU
$i]
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SortUtil.swap(data,pivotIndex,j); %}5"5\Zz
1mPS)X_
file://partition Q+M3Pqy
l=i-1; w%-!dbmb%
r=j; EUS]Se2
do{ Y9ce"*b
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); sO-R+G/^7
SortUtil.swap(data,l,r); Kd1\D!#!6
} `B0*/ml
while(l SortUtil.swap(data,l,r); &-Y:4.BX Z
SortUtil.swap(data,l,j); 07Cuoqt2
z ate%y
if((l-i)>THRESHOLD){ P(+ar#,G
stack[++top]=i; x=+I8Q4:
stack[++top]=l-1; K'/x9.'%
} F5q1VEe
if((j-l)>THRESHOLD){ OHvzK8
stack[++top]=l+1; ?0&>?-?
stack[++top]=j; rzj'!~>U
} kYa'
] m
HliY
} =gyK*F(RK
file://new InsertSort().sort(data); 5h7DVr!
insertSort(data); bu5)~|?{t
} #7"5Y_0-
/** ] CE2/6Ph
* @param data sgsMlZ3/
*/ <W^~Y31:0
private void insertSort(int[] data) { KePHn:c
int temp; 0].5[Jo
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 'Em($A(
} Di=6.gm[<
} O]!DNN
} DcDGrRuh
5X-{|r3q
} !]T|=yw
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归并排序: ?`}U|]c
t\0JNi$2
package org.rut.util.algorithm.support; 9:~^KQ{?
jzp%.4/j
import org.rut.util.algorithm.SortUtil; hlEvL
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/** 86Vu PV-
* @author treeroot B
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* @since 2006-2-2 o#b9M4O
* @version 1.0 y
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*/ \bE~iz3b9
public class MergeSort implements SortUtil.Sort{ svgi!=
xB[#
a*
/* (non-Javadoc) >s~`K^zS
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h {btT
*/ 0CYI,V
public void sort(int[] data) { 2ARh-zLb
int[] temp=new int[data.length]; 3Mt6iZW
mergeSort(data,temp,0,data.length-1); 4B(qVf&M
} t|_g O!w8
q[g^[~WM#
private void mergeSort(int[] data,int[] temp,int l,int r){ Iqv
5lo
.
int mid=(l+r)/2; D=]P9XDvb.
if(l==r) return ; |.yRo_
mergeSort(data,temp,l,mid); AU2Nmf?]%
mergeSort(data,temp,mid+1,r); v4^VYi,.-
for(int i=l;i<=r;i++){ 0\A[a4crj
temp=data; VgL<uxq
} r]{:{Z
int i1=l; ;kA2"c]m
int i2=mid+1; Ok\UIi~
for(int cur=l;cur<=r;cur++){ wEyh;ID3#
if(i1==mid+1) [c~zO+x
data[cur]=temp[i2++]; }=5(*Vg
else if(i2>r) J{I?t~u
data[cur]=temp[i1++]; p!
1zhD
else if(temp[i1] data[cur]=temp[i1++]; 2Hj]QN7"
else )VrHP9fu
data[cur]=temp[i2++]; -K4RQ{=>UZ
} "
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} +bU(-yRy5o
)JON&~C
} XZJx3!~fm
+(T,d ]o]
改进后的归并排序: :}cAq/
elQ44)TrQ
package org.rut.util.algorithm.support; ?:c hAN@
Ns{4BM6j
import org.rut.util.algorithm.SortUtil; eP8wTStC
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/** ,0O!w>u_]J
* @author treeroot 6|x<)Gc
* @since 2006-2-2 O,PHAwVG%L
* @version 1.0 Q}]un]]Zt
*/ 4}`MV .
public class ImprovedMergeSort implements SortUtil.Sort { ?e*vvu33!
eyOAG4QTV
private static final int THRESHOLD = 10; f}A^rWO
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/* -)/>qFj)
* (non-Javadoc) iZF{9@
* w@R-@
G
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;+\;^nS3d
*/ /V~(!S>
public void sort(int[] data) { Fej$`2mRH
int[] temp=new int[data.length]; ?Eed#pb_
mergeSort(data,temp,0,data.length-1); ? IWS
} H.e@w3+h
,;g:qe3D$
private void mergeSort(int[] data, int[] temp, int l, int r) { l\)Q3.w
int i, j, k; a+d|9y/k
int mid = (l + r) / 2; Uz6B\-(0p
if (l == r) ]|oqJ2P
return; ?0F#\0
if ((mid - l) >= THRESHOLD) C" {j0X`
mergeSort(data, temp, l, mid); u]"RAH
else )yJjJ:re
insertSort(data, l, mid - l + 1); l}{O
if ((r - mid) > THRESHOLD) (s~hh
mergeSort(data, temp, mid + 1, r); snrfHDhUw
else 1'iRx,
insertSort(data, mid + 1, r - mid); G(L*8U<UG
Al?XJ C B@
for (i = l; i <= mid; i++) { ZWv$K0agu
temp = data; 1=>$c
} 5 m:nh<)#
for (j = 1; j <= r - mid; j++) { pa7fTd
temp[r - j + 1] = data[j + mid]; Sq,x@
} ^gy(~u
int a = temp[l]; am=56J$ig
int b = temp[r]; "D+QT+sD
for (i = l, j = r, k = l; k <= r; k++) { +KZc"0?
if (a < b) { X~0P+E#
data[k] = temp[i++]; {u7E )Fdl
a = temp; p[RD[b
} else { B{Rig5Sc
data[k] = temp[j--]; iJcl0)|
b = temp[j]; V&G_Bu~
} Y\lBPp0{\v
} =1D*K%
} x&sF_<[
({)_[dJ'
/** q
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* @param data $O[ut.
* @param l }I]9I
_S
* @param i ][.1b@)qV
*/ 3 Xy>kG}
private void insertSort(int[] data, int start, int len) { @{j-B
IRZ0
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); IMBqy -q
} RGcT
} Qx:+n`$/
} XHW{EVcF
} z-,'W`
'Mg%G(3
堆排序: )K}b,X`($
cWm.']
package org.rut.util.algorithm.support; ]uP{Sj
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;{
import org.rut.util.algorithm.SortUtil; 8<P.>u
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/** L\"$R":3{d
* @author treeroot .UJk0%1
* @since 2006-2-2 "5@Y\L
* @version 1.0 cq/)Yff@:
*/ v<O\ l~S
public class HeapSort implements SortUtil.Sort{ <ioX|.7ZX
WTXTr0=
/* (non-Javadoc) x9uA@$l^|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iGR(
*/ bf3)^ 49}
public void sort(int[] data) { 4>(?R[:p)
MaxHeap h=new MaxHeap(); #df Aqg'
h.init(data); 371E S4
for(int i=0;i h.remove(); &c A?|(7-
System.arraycopy(h.queue,1,data,0,data.length); 1Eg,iTn2*x
} :D(:(`A=
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private static class MaxHeap{
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&Zov9o:gx
void init(int[] data){ :QN,T3i'/3
this.queue=new int[data.length+1]; \4V'NTjB
for(int i=0;i queue[++size]=data; GU!|J71z
fixUp(size); am`eist:
} J9/w_,,R$
} f}*Xz.[bCp
iud%X51
private int size=0; )p&xpB(
]J~5{srq:
private int[] queue; I@.qon2V
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public int get() { A1i-QG/6
return queue[1]; DRw%~
} l.C{Ar
O'(qeN<^w
public void remove() { f3nib8B'
SortUtil.swap(queue,1,size--);
i2y?CI
fixDown(1); w+}KX><r
}
_,vJ0{*
file://fixdown 5"{wnnY%K}
private void fixDown(int k) { t#kmtJC
int j; 18a6i^7
while ((j = k << 1) <= size) { ?
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if (j < size %26amp;%26amp; queue[j] j++; Oyz=|[^,W
if (queue[k]>queue[j]) file://不用交换 dNIY`u
break; fE7Kv_N-%
SortUtil.swap(queue,j,k); vG<Mz?wr
k = j; Dt8eVWkN ~
} Y8Mo .v
} <&:3|2p
private void fixUp(int k) { 5-n N8qs
while (k > 1) { @w@rW
}i0
int j = k >> 1; wjpkh~qo
if (queue[j]>queue[k]) 7GKeqv
break; IWTD>c).
SortUtil.swap(queue,j,k); DT_012z
k = j; x!S8'
} 10*U2FY)]
} Rnj2Q!C2
6Bs_"
P[
} GMksr%0Pj
W.>yIA%
} !1|f,9C
6?2/b`k
SortUtil: UGl}=hwKkG
E|#'u^`yv
package org.rut.util.algorithm; 'tF<7\!
K&Zdk (l)
import org.rut.util.algorithm.support.BubbleSort; mh|M O(
import org.rut.util.algorithm.support.HeapSort; S&@~F|
import org.rut.util.algorithm.support.ImprovedMergeSort; B,}%1+*
import org.rut.util.algorithm.support.ImprovedQuickSort; YAsvw\iseK
import org.rut.util.algorithm.support.InsertSort; )\p@E3Uxf
import org.rut.util.algorithm.support.MergeSort;
T<P4+#JK
import org.rut.util.algorithm.support.QuickSort; _)lK.5
import org.rut.util.algorithm.support.SelectionSort; DAJh9I
import org.rut.util.algorithm.support.ShellSort; 'M YqCfIK
_Tev503
/** }K0.*+M
* @author treeroot $yRbo'-
* @since 2006-2-2 N/]TZu~k z
* @version 1.0
RtK/bUa
*/ VM|8HR7U
public class SortUtil { rY88xh^
public final static int INSERT = 1; julAN$2
public final static int BUBBLE = 2; {_PV~8u
public final static int SELECTION = 3; R0 {+Xd
public final static int SHELL = 4; v^JyVf>
public final static int QUICK = 5; %J3#4gG^v
public final static int IMPROVED_QUICK = 6; B7va#'ne4{
public final static int MERGE = 7; _k
_F
public final static int IMPROVED_MERGE = 8; CEt_wKzf
public final static int HEAP = 9; |(Io(e
\U p<m>3\
public static void sort(int[] data) { I5PaY.i
sort(data, IMPROVED_QUICK); 2L ~U^
} lYU_uFOs\
private static String[] name={ RQv`D&u_
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ykM(`
1`m
}; W>'R<IY4#N
=v1s@5;~
private static Sort[] impl=new Sort[]{ o
KX!{
new InsertSort(), wN"irXG
new BubbleSort(), K@%. T#
new SelectionSort(), 6<FJ`l]U9
new ShellSort(), E9QNx62
new QuickSort(), 7vgz=-
MZ#
new ImprovedQuickSort(), dEns|r
new MergeSort(), si0jXue~j\
new ImprovedMergeSort(), XW`&1qx
new HeapSort() ^i#F+Q`1
}; 6SW:'u|90
SbrBlP:G
public static String toString(int algorithm){ liPUK #
return name[algorithm-1]; ^hTq~ "
} YgrBIul
'^}l|(
public static void sort(int[] data, int algorithm) { Ch^Al2)=
impl[algorithm-1].sort(data); G,$RsP
} GiI2nHZc
c7'I'~
public static interface Sort { q48V|6X'q
public void sort(int[] data); 6d` 6=D:
} 7_n@iUG2n
M {_`X
public static void swap(int[] data, int i, int j) { KYd2=P6
int temp = data; @I#@%"AW
data = data[j]; ppfBfMX
data[j] = temp; L)4TW6IUk
} B4_0+K H
} X|@|ZRN