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。 jCtk3No
插入排序: (>u1O V
+,R!el!o~u
package org.rut.util.algorithm.support; E]&N'+T
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import org.rut.util.algorithm.SortUtil; 2P'Vp7f6 Y
/** :+QNN<
* @author treeroot .j,xh )v"
* @since 2006-2-2 fk?!0M6d
* @version 1.0 X1}M_h%
*/ tAep_GR
public class InsertSort implements SortUtil.Sort{ T>1#SWQ/9
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/* (non-Javadoc) $U7/w?gc'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sVP\EF8PY
*/ Kc^ctAk7;
public void sort(int[] data) { P%yL{
int temp; kzUj)
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Oz_CEMcy
} 3;}YW^oXq
} q3/4l%"X
} Ho/tCU|w
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} 4mp)v*z
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冒泡排序: zCA8}](C^
txnH~;(
package org.rut.util.algorithm.support; t'W6Fmwkx
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import org.rut.util.algorithm.SortUtil; 8R\6hYJ%F
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/** GadY#]}(
* @author treeroot V#b*:E.cA
* @since 2006-2-2 <x;g9Z>(
* @version 1.0 +U,t*U4,
*/ ]
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public class BubbleSort implements SortUtil.Sort{ B&59c*K
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/* (non-Javadoc) .@mZG<vg
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s/~[/2[bnf
*/ RDQ]_wsyKG
public void sort(int[] data) { zn= pm#L
int temp; BOvJEs!UX
for(int i=0;i for(int j=data.length-1;j>i;j--){ f`>\bdz
if(data[j] SortUtil.swap(data,j,j-1); `'r]Oe
} JF}i=}
} KdHkX+-R
} }>y~P~`S:
} lc
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} ny^uNIRPR
q |Pebe=
选择排序: =w _T{V
Mx93D
package org.rut.util.algorithm.support; dXY}B=C
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import org.rut.util.algorithm.SortUtil; *qL2=2
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/** y<`:I|y
* @author treeroot $ <[r3
* @since 2006-2-2 ;*Y+. ?>a
* @version 1.0 5gx;Bp^_
*/ *) \y52z
public class SelectionSort implements SortUtil.Sort { 5$Kv%U
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/* GP^^
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* (non-Javadoc) Eqny'44
* %(?;`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?_S);
*/ {ByKTx&
public void sort(int[] data) { Q(1R=4?.Z
int temp; [!KsAsmk
for (int i = 0; i < data.length; i++) { A~?)g!tS<
int lowIndex = i; E'8XXV^I?P
for (int j = data.length - 1; j > i; j--) { 9
s2z=^
if (data[j] < data[lowIndex]) { FRPdfo37
lowIndex = j; T DPQ+Kg_
} /N/jwLr
} @wAYhnxq
SortUtil.swap(data,i,lowIndex); 8BS Nm
} w[QC
} Zmk 9C@
+\PLUOk
} *$('ous8
+W[{UC4b
Shell排序: 0_^3
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package org.rut.util.algorithm.support; B=_5gZ4Y
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import org.rut.util.algorithm.SortUtil; HPO:aGU
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/** 5?j#
* @author treeroot 4 l+z
* @since 2006-2-2 V%M@zd?u.
* @version 1.0 a{ByU%
*/ +]H!q
W:
public class ShellSort implements SortUtil.Sort{ 9a1R"%Z
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/* (non-Javadoc) Esj1Vv#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V5jy,Qi)
*/ b|k(:b-G&.
public void sort(int[] data) { +'[*ikxD=g
for(int i=data.length/2;i>2;i/=2){ 11A;z[Zk
for(int j=0;j insertSort(data,j,i); g6SZ4WV
} /b4>0DXT5
} -"Nvu
insertSort(data,0,1); X1u\si%.4S
} \4OU+$m
h2+"e# _
/** H}usL)0&&
* @param data e5n"(s"G*[
* @param j +rrA>~
* @param i FB~IO#E8W
*/ G)3r[C^[k
private void insertSort(int[] data, int start, int inc) { 7.yCs[Z
int temp; +-hfl/$
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); -7I%^u
} J]NMqiq
} bSTTr<W
} z=rSb4"W
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} mLHl]xs4
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快速排序: 7$L*nf
E|VTbEYG
package org.rut.util.algorithm.support; weOga\
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import org.rut.util.algorithm.SortUtil; u@4khN:
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/** 5S7ATr(*
* @author treeroot l>7?B2^<E
* @since 2006-2-2 |Yi_|']#
* @version 1.0 f_. 0 uM
*/ #Y'ub
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public class QuickSort implements SortUtil.Sort{ d&DQ8Gm ^
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/* (non-Javadoc) #J$z0%P
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |A)a
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*/ ~\O,#j`_
public void sort(int[] data) { ~.S/<:`U
quickSort(data,0,data.length-1); $|19]3T@Z
} 3HndE~_C&
private void quickSort(int[] data,int i,int j){ -ozcK
int pivotIndex=(i+j)/2; t0ZaI E
file://swap WsmP]i^Q
SortUtil.swap(data,pivotIndex,j); k,/2]{#53d
R8j\CiV17
int k=partition(data,i-1,j,data[j]); +DSZ(Zb4qY
SortUtil.swap(data,k,j); pf&SIG
if((k-i)>1) quickSort(data,i,k-1); xwijCFI*
if((j-k)>1) quickSort(data,k+1,j); '^:q|h
[5P1 pkZ
} &:=[\Ws R
/** //}KWz
* @param data 9@
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* @param i OL@' 1$/A
* @param j 2
3A)^j
* @return 2cv=7!K4Uv
*/ )aX#RM? N
private int partition(int[] data, int l, int r,int pivot) { @WzrrCpj
do{ pm*i!3g'
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); H<3ayp$
SortUtil.swap(data,l,r); `{nzw $
} :1!k*5
while(l SortUtil.swap(data,l,r); Vf$q3X
return l; B,{Q[
} [g lhru=+
W=!D[G R
} 5e
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改进后的快速排序: ru*}lDJ
]~'pYOB
package org.rut.util.algorithm.support; -$f$z(h
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import org.rut.util.algorithm.SortUtil; J~5+=V7OV
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/** IOH6h=
* @author treeroot ^ Mq8jw(2
* @since 2006-2-2 P)06<n1">Z
* @version 1.0 %T~LK=m
*/ +?C7(-U>
public class ImprovedQuickSort implements SortUtil.Sort { N6/;p]|
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private static int MAX_STACK_SIZE=4096; $"{I|UFC
private static int THRESHOLD=10; U 0dhr; l
/* (non-Javadoc) )s8{|) -
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pRh)DM#9
*/ Z}r9jM
public void sort(int[] data) { 9Ui|8e~=
int[] stack=new int[MAX_STACK_SIZE]; ~qb-uT\(99
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int top=-1; q>dERN&
int pivot; y6Ea_v
int pivotIndex,l,r; 8G_KbS
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stack[++top]=0; T=T1?@2C
stack[++top]=data.length-1; :>, m$XO
E"t79dD
while(top>0){ [gE2;J0*
int j=stack[top--]; ]=sGLd^)E
int i=stack[top--]; e\H1IR3
A@
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pivotIndex=(i+j)/2; Qr*7bE(a
pivot=data[pivotIndex]; jsIT{a*]
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SortUtil.swap(data,pivotIndex,j); jRSY`MU}t+
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file://partition ]*yUb-xY
l=i-1; sj% \lq
r=j; hXP'NS`iv
do{ o<i\1<eI
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ,V #r
SortUtil.swap(data,l,r); &v&e-|r8;
} "I^pb.3
while(l SortUtil.swap(data,l,r); "I&,':O+
SortUtil.swap(data,l,j); sKGR28e
\t' ]Lf
if((l-i)>THRESHOLD){ q-d#bKIf
stack[++top]=i; {s~t>R p+
stack[++top]=l-1; E9PD1ADR
} "P8cgj C
if((j-l)>THRESHOLD){ ]dQ
stack[++top]=l+1; bxF'`^En
stack[++top]=j; [X'u={
} ](sT,'
\={A%pA;@{
} U
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file://new InsertSort().sort(data); ZD`0(CkXb
insertSort(data); 0^zp*u
} G}gmkp]z
/** iig@$
i#
* @param data kZH IzU
*/ Nmu=p~f}3`
private void insertSort(int[] data) { ,~qjL|9
int temp; tJZ3P@ L
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); g7<u eF
} #(Ezt% ^
} {&s.* 5
} 5SwQ9#
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} -!pg1w06
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归并排序: ?<eH!MHF
y,vrMWDy
package org.rut.util.algorithm.support; qb7ur;
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import org.rut.util.algorithm.SortUtil; jL9to6 Hmr
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/** ~ YCZvJ
* @author treeroot w2o5+G=
* @since 2006-2-2 ub=Bz1._
* @version 1.0 j+QE~L
*/ iP+3)
public class MergeSort implements SortUtil.Sort{ V75P@jv5J
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/* (non-Javadoc) A&($X)t
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Qwu~{tf+'
*/ 137:T:
public void sort(int[] data) { 7q|51rZz
int[] temp=new int[data.length]; '"o&BmF
mergeSort(data,temp,0,data.length-1); g0-J8&?X
} !Di*y$`}b
s!F`
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private void mergeSort(int[] data,int[] temp,int l,int r){ 2]f?c%)I
int mid=(l+r)/2; EiWsVic[
if(l==r) return ; ;`-@L
mergeSort(data,temp,l,mid); k<!xOg
mergeSort(data,temp,mid+1,r); xE%sPWbj
for(int i=l;i<=r;i++){ )NL_))\
temp=data; 29AWg(9?aS
} B0eKj=y;
int i1=l; qB44;!(
int i2=mid+1; 8:)itYE
for(int cur=l;cur<=r;cur++){ S|v")6
if(i1==mid+1) (b>B6W\&
data[cur]=temp[i2++]; x#,nR]C
else if(i2>r) Ob>M]udn
data[cur]=temp[i1++]; hTK6N
else if(temp[i1] data[cur]=temp[i1++]; M|uWSG
else 8S*W+l19f
data[cur]=temp[i2++]; %:hU:+G E
} $mq@g
} w@"l0gm+u[
eIY![..J/N
} 3lD1G~
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改进后的归并排序: :ZP`Y%dt'
55]E<2't
package org.rut.util.algorithm.support; %_%/ym
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import org.rut.util.algorithm.SortUtil; z]O,Vqpl?
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/** <m!(eLm+B
* @author treeroot 47
*,
* @since 2006-2-2 [Uw/;Kyh
* @version 1.0 hj|P*yKV
*/ L>Soj|WUy(
public class ImprovedMergeSort implements SortUtil.Sort { U|}Bk/0.
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private static final int THRESHOLD = 10; -cW'g
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/* [W{WfJ-HwG
* (non-Javadoc) !<I3^q
* S@PAtB5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "J(W)\
*/ UOAL7
public void sort(int[] data) { 6e.?L
int[] temp=new int[data.length]; BmGY#D,
mergeSort(data,temp,0,data.length-1); P]b *hC
} Y] "_}
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private void mergeSort(int[] data, int[] temp, int l, int r) { [$[1|r
*Q
int i, j, k; ^jxV
int mid = (l + r) / 2; `(@}O?w!1
if (l == r) u#uT|a.
return; F1aI4H<(T
if ((mid - l) >= THRESHOLD) %qj8*1
mergeSort(data, temp, l, mid); X=U >r
else g<&n V>wF
insertSort(data, l, mid - l + 1); -p\uW0XA
if ((r - mid) > THRESHOLD) N!
N>/9
mergeSort(data, temp, mid + 1, r); G(6MLh1
else )r^)e4UI
insertSort(data, mid + 1, r - mid); 4W$t28)
.uGvmD<;x
for (i = l; i <= mid; i++) { X[Q:c4'
temp = data; .*zWm
} ]-b`uYb
for (j = 1; j <= r - mid; j++) { 4Cl41a
temp[r - j + 1] = data[j + mid]; cun&'JOH?U
} 7@*l2edXm+
int a = temp[l]; C+=8?u<
int b = temp[r]; +^\TG>le
for (i = l, j = r, k = l; k <= r; k++) { xOAA1#
if (a < b) { ~$\9T.tre2
data[k] = temp[i++]; 8vL2<VT;
a = temp; /PuN+M
} else { SlRQi:
data[k] = temp[j--]; cB ,l=/?
b = temp[j]; ;@R=CQ6
} 2GRdfX
} qB0F9[U
} B<p -.tv
WzwH;!
/** 2a3RRP
* @param data WFTXSHcG
* @param l 5!pof\/a
* @param i NEb M>1>^
*/ [G/ti&Od^
private void insertSort(int[] data, int start, int len) { XzBnj7E
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ,4&?`Q
} `f~\d.*U
} QxaW
x
} {hmC=j
} [_pw|BGp
MY]<^/Q
堆排序: 6?C|pO
?mCino
package org.rut.util.algorithm.support; <HC5YA)4
w#!^wN
import org.rut.util.algorithm.SortUtil; zcn/LF
1"4Pan
/** -J<{NF
* @author treeroot ev}ugRxt|k
* @since 2006-2-2 &eqeQD6
* @version 1.0 *49lM;
*/ [$<\*d/
public class HeapSort implements SortUtil.Sort{ ..5rW0lr
e2X\ll
/* (non-Javadoc) CC8)yO
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g]V_)}
*/ m@Vz42g~+
public void sort(int[] data) { @*VfG CQ(
MaxHeap h=new MaxHeap(); v,VCbmc
h.init(data); $xK2M
for(int i=0;i h.remove(); 'fGB#uBt
System.arraycopy(h.queue,1,data,0,data.length); $gv3Up"U
} 7`c\~_Df_
^z%ShmM&LZ
private static class MaxHeap{ .a0]1IkatV
$k,wA8OZ-
void init(int[] data){ fUg<+|v*
this.queue=new int[data.length+1]; 5>e#SW
for(int i=0;i queue[++size]=data; DQ86(4e*g#
fixUp(size); S1Nwm?z
} 7%Q?BH7{
} ,_$}>MY;
Sz_{ #-
private int size=0; Z?);^m|T
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private int[] queue; @|jLw($Ly
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public int get() { a
At<36{?
return queue[1]; )#H&lH
} L^{1dVGWNa
YXi'^GU@
public void remove() { UBm L:Qv
SortUtil.swap(queue,1,size--); +'ZJ]
fixDown(1); >OLKaghV.5
} ,DZoE~
file://fixdown OABMIgX
private void fixDown(int k) { j+9;Cp]N V
int j; Vx<`6uv
while ((j = k << 1) <= size) { XB.xIApmy
if (j < size %26amp;%26amp; queue[j] j++; Nf!g1D"U
if (queue[k]>queue[j]) file://不用交换 <Pm!#)-g9
break; b:M1P&R
SortUtil.swap(queue,j,k); 5p}ri,Y<
k = j; 0{q>'dv
} ,dR<O.{0
} l@irAtg4
private void fixUp(int k) { I0qSx{K
while (k > 1) { 0'QX*xfa>
int j = k >> 1; d5z=fH9
if (queue[j]>queue[k]) 2&,jO+BqE@
break; tpY]Mz[J
SortUtil.swap(queue,j,k); v><c@a=[
k = j; A5\00O~
} X9-WU\?UC
} nqFJNK]a
){I0
} 7'~Oai~r
;J>upI
} -91*VBrOd
yd|ro G/
SortUtil: Km)VOX[ZZ
L* 0$x
package org.rut.util.algorithm; a7fFp9l!
@,:6wKMc
import org.rut.util.algorithm.support.BubbleSort; LJc"T)>$`
import org.rut.util.algorithm.support.HeapSort; rsaN<6#_^Q
import org.rut.util.algorithm.support.ImprovedMergeSort; sy]hMGH:3W
import org.rut.util.algorithm.support.ImprovedQuickSort; x_+-TC4IXn
import org.rut.util.algorithm.support.InsertSort; k',#T932x1
import org.rut.util.algorithm.support.MergeSort; %4QpDt
import org.rut.util.algorithm.support.QuickSort; li37*
import org.rut.util.algorithm.support.SelectionSort; [pRRBMho
import org.rut.util.algorithm.support.ShellSort; 1`Ig A0V`"
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/** 0R-J
\
* @author treeroot kdP*{
* @since 2006-2-2 $A;%p6PO)
* @version 1.0 !0Mx Bem
*/ cSD$I^$oq
public class SortUtil { EEn8]qJC
public final static int INSERT = 1; @"G+kLv0
public final static int BUBBLE = 2; dHsI<