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。 cd=K=P}p
插入排序: }`!-WY
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package org.rut.util.algorithm.support; gv D*^
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import org.rut.util.algorithm.SortUtil; nLC5FA7<
/** I Gi9YpI&K
* @author treeroot 1 o_6WU
* @since 2006-2-2 Qpj[]c5
* @version 1.0 ReL+V
*/ *B84Y.d f
public class InsertSort implements SortUtil.Sort{ M*C1QQf\N
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/* (non-Javadoc) a.RYRq4o
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &49WfctT
*/ $DtUTh3)
public void sort(int[] data) { z@V9%xF-3
int temp; t* p%!xsH
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); /Ahh6=qQY
} #&fu"W+D96
} ledr[)
} |`s:&<W+kp
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} Aon.Y Z
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冒泡排序: -WR<tkK
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package org.rut.util.algorithm.support; 6V}xgfB
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import org.rut.util.algorithm.SortUtil; A zp!;+
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/** [hk/Rp7{
* @author treeroot %Pj}
* @since 2006-2-2 ~*UY[!+4^=
* @version 1.0 7,8TMd1`M
*/ 8?x:PkK
public class BubbleSort implements SortUtil.Sort{ pYu6[
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/* (non-Javadoc) q_mxZM
->
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jzZ]+'t
*/ 8OO[Le]1
public void sort(int[] data) { g5u4|+70
int temp; GCX?W`
for(int i=0;i for(int j=data.length-1;j>i;j--){ JNJ6HyCU
if(data[j] SortUtil.swap(data,j,j-1); AT1{D!b
} ;:+2.//
} xU6dRjYhH9
} 412E7
} DyA/!%g
]mUt[Yy:z
} A wk1d
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选择排序: P=\Hi.]%
v-^tj}jA
package org.rut.util.algorithm.support; |.&GmP
t5u#[*
import org.rut.util.algorithm.SortUtil; OdL/%Zp}
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/** +c,
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* @author treeroot Q<ia
* @since 2006-2-2 DlAwB1Ak
* @version 1.0 KaHe(
*/ K[
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public class SelectionSort implements SortUtil.Sort { 81!;W t(?
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/* mV)t
* (non-Javadoc) hY!>>
* DUH_LnHw)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g jzWW0C
*/ :XPat93w
public void sort(int[] data) { :nc%:z=O
int temp; /=A@O !l
for (int i = 0; i < data.length; i++) { 3bjCa\ "
int lowIndex = i; v\qyDZ VV
for (int j = data.length - 1; j > i; j--) { &0 "*.:J9
if (data[j] < data[lowIndex]) { &^uaoB0
lowIndex = j; Ro<x#Uo
} qPWf=s7!
} :}/\hz
,
SortUtil.swap(data,i,lowIndex); rc~)%M<[2
} ;OD-?bC
} QD%6K=8Q
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} aNQ(xiskb
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Shell排序: 8bO+[" c
m}zXy\
package org.rut.util.algorithm.support; 0uPcEpIA
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import org.rut.util.algorithm.SortUtil; Y9vVi]4
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/** p9mGiK4!
* @author treeroot J^%E$s
* @since 2006-2-2 ~Fl\c-
* @version 1.0 o{n#f?EA
*/ ~ _tK.m3
public class ShellSort implements SortUtil.Sort{ OL:hNbw'~T
!?Y71:_!
/* (non-Javadoc) B4+c3M\$V
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ua &uR7
*/ 1/qD5 *`Y
public void sort(int[] data) { _bg Zl
for(int i=data.length/2;i>2;i/=2){ rd$T6!I
for(int j=0;j insertSort(data,j,i); GC3d7
} e^\#DDm
} :,j^ei
insertSort(data,0,1); b9 li
} BM)a,fIgo
b`^?nD7
/** ;:ZD<'+N
* @param data qQO*:_ezzk
* @param j 99,=dzm
* @param i D!Nc&|X^
*/ MPyDG"B *
private void insertSort(int[] data, int start, int inc) { C=U4z|Ym
int temp; 9f5~hBlo
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); SkVah:cF-
} "{H{-`Ni
} 4gdXO
} nA.U'=`
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} &TrL!9FtJ
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快速排序: )`\Q/TMl5
G{Ju2HY
package org.rut.util.algorithm.support; nU\.`.39
+
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import org.rut.util.algorithm.SortUtil; Uspv^O9_
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/** |E||e10wR
* @author treeroot u(?U[pe[
* @since 2006-2-2 bJR\d0Z
* @version 1.0 k]RQ 7e
*/
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public class QuickSort implements SortUtil.Sort{ |Zp')
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/* (non-Javadoc) H$Pf$D$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -~4kh]7%
*/ D;+Y0B
public void sort(int[] data) { {Dy,|}7s
quickSort(data,0,data.length-1); Az#kE.8b*A
} .W2w/RayC
private void quickSort(int[] data,int i,int j){ mL'A$BR`
int pivotIndex=(i+j)/2; OPqhdqo
file://swap ]iFW>N*a
SortUtil.swap(data,pivotIndex,j); XbFo#Pwk
@ptrF
pSL
int k=partition(data,i-1,j,data[j]); 9(vp`Z8B4
SortUtil.swap(data,k,j); "SWL@}8vx
if((k-i)>1) quickSort(data,i,k-1); ,nP nH1vb
if((j-k)>1) quickSort(data,k+1,j); 'xaEG,P
iS"6)#a72
} S==0/
/** dXsL0r*c
* @param data ~Hj c?*
* @param i iXXaB+w
* @param j ,+gtr.
* @return K]7[|qf&
*/ SNSoV3|k-
private int partition(int[] data, int l, int r,int pivot) { 00y(E@~
do{ `w@z
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Lk^bzW>f
SortUtil.swap(data,l,r); Tkp"mT
v?<
} IEJ)Q$GI#
while(l SortUtil.swap(data,l,r); Ag2Q!cq
return l; H/8u?OC
} > #9
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dpt P(H
} (r}StR+
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改进后的快速排序: +#(GU9_i+M
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package org.rut.util.algorithm.support; #,})N*7
gQY`qz
import org.rut.util.algorithm.SortUtil; 3!#FG0Z
55y{9.n*
/** - JFW ,8=8
* @author treeroot >Kl_948
* @since 2006-2-2 1 un!
* @version 1.0 =i7CF3
*/ >!o!rs
public class ImprovedQuickSort implements SortUtil.Sort { O]F(vHK\
CR#-!_=4
private static int MAX_STACK_SIZE=4096; Z7e"4wA
private static int THRESHOLD=10; JlEfUg#*
/* (non-Javadoc) ;4v`FC>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k{ZQM
*/
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public void sort(int[] data) { Jiru~Vo+
int[] stack=new int[MAX_STACK_SIZE]; HFz;"s3lWM
BI!E mA
int top=-1; H,j_2JOY=
int pivot; G[OJ<px
int pivotIndex,l,r; qk0cf~gz
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stack[++top]=0; As tuM]
stack[++top]=data.length-1; 7W&XcF
#X'su`+
while(top>0){ jr-9KxE
int j=stack[top--]; jgkY^l
int i=stack[top--]; -ntQqHs
vJx( lU`Y
pivotIndex=(i+j)/2; (gcy3BX;
pivot=data[pivotIndex]; {\LLiU}MJC
} z7yS.{
SortUtil.swap(data,pivotIndex,j); _l,-SQgj
mOLz(0
file://partition -ni@+Dy
l=i-1; j4=\MK
r=j; -G=.3
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do{ I;, n|o
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 8S[bt@v
SortUtil.swap(data,l,r); u`!Dp$P
} o{mVXidE
while(l SortUtil.swap(data,l,r); ^b= ;
SortUtil.swap(data,l,j); yRQNmR;Uy
#}tdA(
-
if((l-i)>THRESHOLD){ X1V~.kvt)
stack[++top]=i; hOdU%
stack[++top]=l-1; a785xSUV
} v`6vc)>8
if((j-l)>THRESHOLD){ /WX&UAG
stack[++top]=l+1; PVmePgF
stack[++top]=j; C!^;%VQ}d
} /Vx
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$!\L6;:
} n+vv
%
file://new InsertSort().sort(data); -Wre4^,v
insertSort(data); KWi|7z(L=
} % S>6Q^B
/** 'I r
* @param data mFd|JbW
*/ KyqP@
{
private void insertSort(int[] data) { jz\>VYi(7
int temp; ,bB}lU)
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); plNw>rFa
} iI*qx+>f?
} !y2yS/
} #TeAw<2U
eqWs(`
} TA#pA(k
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归并排序: z38Pi
s)sT\crP@
package org.rut.util.algorithm.support; xa{.hp?
lhBAT%U\
import org.rut.util.algorithm.SortUtil; ~BnmAv$m[
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/** lJS3*x#H
* @author treeroot m YhDi
* @since 2006-2-2 %UV"@I+
* @version 1.0 )}i2x:\|_
*/ =">0\#
public class MergeSort implements SortUtil.Sort{ 0 r;tI"
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/* (non-Javadoc) Q}g"pl
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C
MGDg}
*/ +)_DaL
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public void sort(int[] data) { :8?l=B9("g
int[] temp=new int[data.length]; CXi:?6OG
mergeSort(data,temp,0,data.length-1); =#&+w[4?&.
} X7MA>j3m
T@n};,SQ
private void mergeSort(int[] data,int[] temp,int l,int r){ <jLL2-5r0
int mid=(l+r)/2; $:vS_#
if(l==r) return ; R+Ug;r-[
mergeSort(data,temp,l,mid); T~?&hZ>
mergeSort(data,temp,mid+1,r); 4:kDBV;v
for(int i=l;i<=r;i++){ 1ZvXRJ)%
temp=data; koj*3@\p/
} gf/<sH2}
int i1=l; fA ),^
int i2=mid+1; zIU6bMMT3u
for(int cur=l;cur<=r;cur++){ A
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if(i1==mid+1) bGlr>@;-r
data[cur]=temp[i2++]; (!Fu5m=<8
else if(i2>r) ~P*{%= a
data[cur]=temp[i1++]; aQj6XGu
else if(temp[i1] data[cur]=temp[i1++]; H*",'`|-
else W4nhPH(
data[cur]=temp[i2++]; j& L@L.d
} ~O3VX75f
} w@,v$4Oi
mZjP;6
} b$`/f:_
RgzzbW
改进后的归并排序: e
:@PI(P!
>;fn,9w
package org.rut.util.algorithm.support; 4-C'2?
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import org.rut.util.algorithm.SortUtil; F-D$Y?m
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/** 2>Qy*
* @author treeroot [X@JH6U
r
* @since 2006-2-2 i=V2
/W}
* @version 1.0 jk%H+<FU`
*/ k<rJm
P{
public class ImprovedMergeSort implements SortUtil.Sort { 6O*lZNN
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private static final int THRESHOLD = 10; M L7 vP
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/* ?07}\N0~
* (non-Javadoc) q'uGB fE.
* 9LOq*0L_:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hF5(1s}e$
*/ LK>;\BRe?
public void sort(int[] data) { gMU%.%p2
int[] temp=new int[data.length]; 7(<r4{1?
mergeSort(data,temp,0,data.length-1); _k(&<1i
} "Sw raq
LFvZ 7M\\
private void mergeSort(int[] data, int[] temp, int l, int r) { [?2,(X0yh1
int i, j, k; KfQR(e9n
int mid = (l + r) / 2; +Y>oNX1KN
if (l == r) ]y"=/Nu-Ja
return;
.P ??N
if ((mid - l) >= THRESHOLD) ,!P}Y[|
mergeSort(data, temp, l, mid); bb-u'"5^]
else O! _d5r&,
insertSort(data, l, mid - l + 1); KNOVb=#f_
if ((r - mid) > THRESHOLD) 2M+*VO
mergeSort(data, temp, mid + 1, r); va0}?fy.O%
else VWqZ`X
insertSort(data, mid + 1, r - mid); wv Mp~
^RYq !l$
for (i = l; i <= mid; i++) { Nc?'},
temp = data; 3L{)Y`P
} ENFM``dV#
for (j = 1; j <= r - mid; j++) { 2{B
ScI5K
temp[r - j + 1] = data[j + mid]; Bz>5OuOVS\
} ,MG`}*N}
int a = temp[l]; }R_Rw:W
int b = temp[r]; d\r-)VWSr"
for (i = l, j = r, k = l; k <= r; k++) { @eq.&{&
if (a < b) { x]t$Zb/Uxa
data[k] = temp[i++]; v'r)d-T
a = temp; ;f)AM}~^Q
} else { c Ze59
data[k] = temp[j--]; kX+98?h-C
b = temp[j]; aF>&X-2
} `^h:}V
} q*cEosi'F?
} r^ABu_u(`I
0:B%,nUM
/** wGxH
* @param data sFsf~|
* @param l Xx\,<8Xn
* @param i e-b>
*/ GH`y-Ul'K
private void insertSort(int[] data, int start, int len) { 2)-4?uz~
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ?MS!t6
} {P)O#
} YoWXHg!U
} d;{k,rP6
} O9AFQ)u
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Y
堆排序: aS~~*UHW
[*@
+
package org.rut.util.algorithm.support; ~Bi%8G
2HF`}H)H
import org.rut.util.algorithm.SortUtil; Z_[L5B]Gwd
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/** #er% q:
* @author treeroot ^1_CS*
* @since 2006-2-2 [\&2&
* @version 1.0 lR]FQnZ
*/ {.J<^V
public class HeapSort implements SortUtil.Sort{ j-ob7(v)*]
Qraa0]56
/* (non-Javadoc) #qeC)T
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *eI {g
*/ s-~`Ao'
<
public void sort(int[] data) { DgB;6Wl
MaxHeap h=new MaxHeap(); _CBMU'V
h.init(data); "/ Gw`^t
for(int i=0;i h.remove(); c:<a"$
System.arraycopy(h.queue,1,data,0,data.length); DhD##5a
} <5}j(jxz}
: t/0
private static class MaxHeap{ aX
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xC}' "``s
void init(int[] data){ n^*,JL9@
this.queue=new int[data.length+1]; oA@c.%&
for(int i=0;i queue[++size]=data; pWP1$;8
fixUp(size); {SD%{
} ekqS=KfWl;
} .K`n;lVs
-<M+ $hK\
private int size=0; ^66OzT8A
JVr8O`>T
private int[] queue; 6~x a^3G:
=&(e* u_
public int get() { 5".bM8o
return queue[1]; @.`k2lxGd~
}
'(g;nU<
[jrfh>v
public void remove() { Gl[1K/,*
SortUtil.swap(queue,1,size--); XL'\$f
fixDown(1); yB 'C9wEH
} ze21Uj1x*
file://fixdown hMUUnr"8;i
private void fixDown(int k) { -= izu]Fb,
int j; $1Zr.ERL|(
while ((j = k << 1) <= size) { =%s6QFR
if (j < size %26amp;%26amp; queue[j] j++; NytodVZ'3
if (queue[k]>queue[j]) file://不用交换 1GB]Yi[>
break; YHMJ5IM@.
SortUtil.swap(queue,j,k); B]6Lbp"oo
k = j; *xY3F8
} -eIo
} p1("
private void fixUp(int k) { {-f%g-@L6|
while (k > 1) { eKZS_Q d
int j = k >> 1; ZSyXzop
if (queue[j]>queue[k]) |f!J-H)
break; &0fV;%N
SortUtil.swap(queue,j,k); #z7yoP
k = j; :{B']~Xf
} 5?([jAOf
} H4j1yD(d
#9~,d<H
} 5% }!z~8Y4
_6'@#DN
} 5UG9&:zu'V
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SortUtil: OhlK;hvdB*
gsl_aW!
package org.rut.util.algorithm; ;%^{Zybh
!hHX8TD^J
import org.rut.util.algorithm.support.BubbleSort; 0,Ib74N'w
import org.rut.util.algorithm.support.HeapSort; jicH 94#(]
import org.rut.util.algorithm.support.ImprovedMergeSort; .GL@`7"
import org.rut.util.algorithm.support.ImprovedQuickSort; }[h]z7e2S
import org.rut.util.algorithm.support.InsertSort; Z:es7<#y
import org.rut.util.algorithm.support.MergeSort; XXA]ukj;r
import org.rut.util.algorithm.support.QuickSort; `AvK=]
import org.rut.util.algorithm.support.SelectionSort; G6G-qqXy6
import org.rut.util.algorithm.support.ShellSort;
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t
/** c\&;Xr
* @author treeroot \sfc!5G
* @since 2006-2-2 '> n&3`r5
* @version 1.0 0CK
*/ n&zEYCSI
public class SortUtil { " Up(Vj@
public final static int INSERT = 1; _VTpfeL@n
public final static int BUBBLE = 2; MI(;0
public final static int SELECTION = 3; ^S?f"''y3
public final static int SHELL = 4; tE <?L
public final static int QUICK = 5; Ei\>gXTH1-
public final static int IMPROVED_QUICK = 6; )Q>Ao.
public final static int MERGE = 7; iA[o;D#
public final static int IMPROVED_MERGE = 8; @+Sr~:K
public final static int HEAP = 9; UUb0[oy
|5X59!
JL
public static void sort(int[] data) { c3o3i
sort(data, IMPROVED_QUICK); z;Fz3s7
} _\Z'Yl
private static String[] name={ dqo-.,=
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 1~3dX[&
}; :]CL}n$*
Oh>hyY)}
private static Sort[] impl=new Sort[]{ @)vQ>R\k<
new InsertSort(), "@/pQoLy
new BubbleSort(), `~"'\Hw
new SelectionSort(), pV;0Hcy
new ShellSort(), w-xigm>{Z
new QuickSort(), >goHQ30:
new ImprovedQuickSort(), OLm@-I*
new MergeSort(), n;$u%2 t2
new ImprovedMergeSort(), yWE\)]9
new HeapSort() D
.LR-Z
}; [@8 po-()L
kWy@wPqms
public static String toString(int algorithm){ b-#lKWso
return name[algorithm-1]; D6+3f#k6
} 4z26a
a?8)47)
public static void sort(int[] data, int algorithm) { v+`'%E
impl[algorithm-1].sort(data); R5(([C1
} vyB{35p$
(v|<"
tv
public static interface Sort { \_6
public void sort(int[] data); 75R#gQ]EV
} !MOsP<2
zUZET'Bm9
public static void swap(int[] data, int i, int j) { Xw<;)m
int temp = data; &=$f\O1Ty
data = data[j]; Dj'?12Onu=
data[j] = temp; A9u>bWIE7
} m)"(S
} B8n[ E