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。 hxIG0d!o
插入排序: F\' ^DtB
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package org.rut.util.algorithm.support; .AEOf0t
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import org.rut.util.algorithm.SortUtil; X67.%>#3
/** ]}4{|& e
* @author treeroot wv.FL$f[@
* @since 2006-2-2 !ke_?+8sY
* @version 1.0 l>l)m-;O
*/ aNZJs<3;'D
public class InsertSort implements SortUtil.Sort{ -&4W0JK9
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/* (non-Javadoc) m!{}Y]FZn
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cY%[UK $l
*/ XkB^.[B
public void sort(int[] data) { 'dE G\?v9
int temp; ?\_N*NEtK
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 'ZyHp=RN)
} 1b4aY>
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} RYU(z;+0p
} n5nV461U
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} Irk@#,{<
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冒泡排序: 4nC`DJ;V
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package org.rut.util.algorithm.support; jft%\sY
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import org.rut.util.algorithm.SortUtil; %+PWcCmn
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/** b`x7%?Qn
* @author treeroot O]ZP- WG
* @since 2006-2-2 ' 0iXx
* @version 1.0 nWTo$*>W
*/ /u9Md 3q*'
public class BubbleSort implements SortUtil.Sort{ ztSP4lW
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/* (non-Javadoc) 8"!Z^_y)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l2v4SvbX
*/ s|7(VUPL
public void sort(int[] data) { ;>*l?m-S@n
int temp; YkRv~bc1]
for(int i=0;i for(int j=data.length-1;j>i;j--){ >Ab>"!/'K
if(data[j] SortUtil.swap(data,j,j-1); 2ckAJcpEb/
} d/Q}I[J.u
} J(BtGGU'
} 19 h7 M
} !PN;XZ~{
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} V^O
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选择排序: j, SOL9yg
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package org.rut.util.algorithm.support; =bJj;bc'5
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import org.rut.util.algorithm.SortUtil; ~n)!e#p
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/** [ vU$zZ<
* @author treeroot %
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* @since 2006-2-2 w7b?ve3-
* @version 1.0 g8 (zvG;Y
*/ |_&Tu#er3
public class SelectionSort implements SortUtil.Sort { _pu G?p
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/* }}a<!L,{
* (non-Javadoc) @\[UZVmBw
* VGbuEC [Y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _Je k;N
*/ ;p~ &G"-C`
public void sort(int[] data) { eySV -f{
int temp; [al, UO
for (int i = 0; i < data.length; i++) { #"}Z'|X*
int lowIndex = i; d*%-r2K
for (int j = data.length - 1; j > i; j--) { yZf+*j/a7
if (data[j] < data[lowIndex]) { TGnyN'P|
lowIndex = j; s>Eu[uA
} Dp:u!tdbeg
} =}S*]Me5
SortUtil.swap(data,i,lowIndex); VKtrSY}6T
} 8'=8!V
} >n,RBl
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} 9/$D&tRN
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Shell排序: ]=A=VH&
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package org.rut.util.algorithm.support; 7g(,$5
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import org.rut.util.algorithm.SortUtil; ?!H<V@a
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/** &FrW(>2
* @author treeroot )A]E:]2
* @since 2006-2-2 8Z;wF
* @version 1.0 h.Cr;w,2R
*/ 0{ovLzW
public class ShellSort implements SortUtil.Sort{ *uYnu|UQH
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/* (non-Javadoc) Jhbkp?Zli
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OtuOT=%
*/ 5.J$0wK'6
public void sort(int[] data) { <UJgl{-
for(int i=data.length/2;i>2;i/=2){ ?}*A/-Hx0U
for(int j=0;j insertSort(data,j,i); 'T54k
} |]7z
} sY?pp
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insertSort(data,0,1); `r"euO
r\
} 846j<fE
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/** 4;;F(yk8
* @param data ybBLBJb
* @param j XcJ'w
* @param i }Sa2s&[<
*/ #pJ^w>YNy
private void insertSort(int[] data, int start, int inc) { AL/`Pqlk
int temp; 1nh2()QI[
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); p#}38`
} }+U} [G
} 1-@.[VI
} \LB =_W$
} G$rr.G
} zGFo-C
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快速排序: 9NwA5TP9_
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package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; htbN7B(
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/** }?B=R#5
* @author treeroot 84[T!cDk
* @since 2006-2-2 T2#
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* @version 1.0 LPbZ.
*/ (j-[m\wF
public class QuickSort implements SortUtil.Sort{ {t: ZMUV
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/* (non-Javadoc) }S6Sz&)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 't=\YFQ*v
*/ hvu>P {
public void sort(int[] data) { 70 !&
quickSort(data,0,data.length-1); gkUG*Zw
} }9fH`C/m
private void quickSort(int[] data,int i,int j){
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int pivotIndex=(i+j)/2; DB'pRo+U
file://swap G.K3'^_
SortUtil.swap(data,pivotIndex,j); <Gzy*1Q&
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int k=partition(data,i-1,j,data[j]); @L|X('i
SortUtil.swap(data,k,j); k))*Sg
if((k-i)>1) quickSort(data,i,k-1); jh.W$.Oq
if((j-k)>1) quickSort(data,k+1,j); juuBLv
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} R}4o{l6
/** H<|I&nV
* @param data eW)(u$C|qL
* @param i iZ+\vO?|
* @param j "|pNS)
* @return yEt :g0Z\
*/ ,-Fhb~u
private int partition(int[] data, int l, int r,int pivot) { S1^u/$*6
do{ #=R) s0j"
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 9&5\L
SortUtil.swap(data,l,r); @YmD 79
} 5,>1rd<B
while(l SortUtil.swap(data,l,r); 'Omi3LXfDT
return l; /h?<MI\7V
} My]+?.Ru
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} CRZi;7`*1
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改进后的快速排序: M&uzOK+
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package org.rut.util.algorithm.support; x @1px&^
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import org.rut.util.algorithm.SortUtil; cT/3yf
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/** d^KBIz8$5l
* @author treeroot p>k]C:h
* @since 2006-2-2 6RK ~Dl&g
* @version 1.0 M*d-z
*/ OOCQsoN
public class ImprovedQuickSort implements SortUtil.Sort { kx|me~I
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private static int MAX_STACK_SIZE=4096; iKg75%;t
private static int THRESHOLD=10; %z(9lAe
/* (non-Javadoc) ^Vag1(hdq
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LWD.
*/ $GQphXb$
public void sort(int[] data) { ? ouV
int[] stack=new int[MAX_STACK_SIZE]; tY{;
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int top=-1; j._G7z/LJ
int pivot; .j:i&j(
int pivotIndex,l,r; fk+1# 7{
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stack[++top]=0; -r!42`S
stack[++top]=data.length-1; a]`itjL^
CNut{4
while(top>0){ !]yQ1@)*'
int j=stack[top--]; uii7b7[w
int i=stack[top--]; Z,3 CC \
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pivotIndex=(i+j)/2; Ru:n~77{
pivot=data[pivotIndex]; A
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SortUtil.swap(data,pivotIndex,j); Po> e kz_E
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file://partition k,T_e6(
l=i-1; q&Q/?g>f
r=j; H-185]7
do{ C(s\LI!r
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); q'.;W@m
SortUtil.swap(data,l,r); r]9 e^
} c)03Ms4
D
while(l SortUtil.swap(data,l,r); 8\DME
SortUtil.swap(data,l,j); @YCv
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if((l-i)>THRESHOLD){ sW?B7o?
stack[++top]=i; ^PC\E}
stack[++top]=l-1; @m?{80;uQ
} s{ =5-:
if((j-l)>THRESHOLD){ 6%%PP8.F
stack[++top]=l+1; SBX|Bcyk*
stack[++top]=j; $~=2{
} QhCY}Q?X
)=Zsv40O
} W<Z$YWr
file://new InsertSort().sort(data); l&3ki!
insertSort(data); AVv#\JrRW
} -?5$ PH
/** awFhz 6
* @param data !y%+GwoW
*/ izf~w^/
private void insertSort(int[] data) { "7d.i(vw
int temp; 6|^0_6_
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); #X5hSw;
} H UkerV
} gD6tHg>_
} ~0ooRUWU7
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} Xem5@
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归并排序: waCboK'
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package org.rut.util.algorithm.support; ;E#\
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import org.rut.util.algorithm.SortUtil; FCiq?@
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/** z,x"a
* @author treeroot xr.XU'
* @since 2006-2-2 U(~U!O}
* @version 1.0 W' ep6O
*/ g4wZvra6%)
public class MergeSort implements SortUtil.Sort{ {zP#woz2Q
> :Ze4}(
/* (non-Javadoc) j#VIHCzlr
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KDD@%E
*/ P"F{=\V1`<
public void sort(int[] data) { VNj@5s
int[] temp=new int[data.length]; ;'HF'Z
mergeSort(data,temp,0,data.length-1); "OL~ul5
} 9!}q{2j
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private void mergeSort(int[] data,int[] temp,int l,int r){ d0
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int mid=(l+r)/2; [N:BM% FQ
if(l==r) return ; '9J*6uXf.
mergeSort(data,temp,l,mid); a4&:@`=
mergeSort(data,temp,mid+1,r); Jq
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for(int i=l;i<=r;i++){ {155b0
temp=data; AIh*1>2Xn
} /\J|Uj
int i1=l; iYKU[UP?
int i2=mid+1; +.@c{5J<
for(int cur=l;cur<=r;cur++){ ?2ItB `<(
if(i1==mid+1) .N"~zOV<#
data[cur]=temp[i2++]; \84v-VK
else if(i2>r) OVR?*"N_
data[cur]=temp[i1++]; zZ=$O-&%
else if(temp[i1] data[cur]=temp[i1++]; PLdn#S}.
else VVuR+=.&
data[cur]=temp[i2++]; nbmc[!PwG
} \.<KA
} -$YJfQE6G
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} maC>LBa2/
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改进后的归并排序: (}gcY
vPmnN^
package org.rut.util.algorithm.support; Mo^`\/x!
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import org.rut.util.algorithm.SortUtil; S~3\3qt$
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/** {'R)4hL
* @author treeroot Hk;-5A|9
* @since 2006-2-2 mhzYz;}
* @version 1.0 6RK\}@^=K
*/ 2z\;Q8g){r
public class ImprovedMergeSort implements SortUtil.Sort { SW9fE:v
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private static final int THRESHOLD = 10; `.^ |]|u
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/* AyVrk
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* (non-Javadoc) n29(!10Px
* 1 Z[f
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #I%s3
*/ z"379b7cN
public void sort(int[] data) { 4|Ui?.4=
int[] temp=new int[data.length]; T20VX 8gX
mergeSort(data,temp,0,data.length-1); YD&_^3-XM
} !buz<h
3?E}t*/
private void mergeSort(int[] data, int[] temp, int l, int r) { S>f&6ZDNY(
int i, j, k; `\b+[Nes
int mid = (l + r) / 2; *%A}x
if (l == r) u\g,.C0
return; U5+vN[ K
if ((mid - l) >= THRESHOLD) |_zO_F rtp
mergeSort(data, temp, l, mid); '^}+Fv<O
else P))^vUt~
insertSort(data, l, mid - l + 1); u#jC#u^M
if ((r - mid) > THRESHOLD) {#hVD4$b
mergeSort(data, temp, mid + 1, r); r<yhI>>;<
else $[(d X!]F
insertSort(data, mid + 1, r - mid); !7 _\P7M
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for (i = l; i <= mid; i++) { lLiQ ;@
temp = data; 3 ^}A %-bS
} f)6))
for (j = 1; j <= r - mid; j++) { N|dD!
temp[r - j + 1] = data[j + mid]; Qv{,wytyO
} M_1;$fWq
int a = temp[l]; ' 4O-
int b = temp[r]; :uK
btoA
for (i = l, j = r, k = l; k <= r; k++) { O\Eqr?%L)
if (a < b) { 0k[2jh
data[k] = temp[i++]; AsxD}Nw[Z*
a = temp; nhH;?D3
} else { qX6D1X1_
data[k] = temp[j--]; 8 ws$k\>
b = temp[j]; q7Es$zjX
} oF|N O^H
} p>kq+mP2bc
} 8r:M*25
I1=(. *B}
/** npH?4S-8G
* @param data ?F@%S3h.
* @param l ,=PKd&
* @param i mTf<
*/ $8=@R'
private void insertSort(int[] data, int start, int len) { &ab|2*3?X
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 2QUx&u:
} l] !B#{
} 6X_\Ve
} h @/;`E[
} aMwB>bt
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堆排序: \3zj18(@8!
7@;">`zvm
package org.rut.util.algorithm.support; sqO<J$tz
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import org.rut.util.algorithm.SortUtil; MC!ZX)mF
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/** ";NRzY
* @author treeroot U
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* @since 2006-2-2 [r-}bp'Gp
* @version 1.0 07_oP(;jT
*/ *@S@x{{s
public class HeapSort implements SortUtil.Sort{ W>-B [5O&[
a.%LHb
/* (non-Javadoc) ?J!3j{4e
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #@f[bP}a
*/ 1~yZ T
public void sort(int[] data) { 9lzQ\}
MaxHeap h=new MaxHeap(); \k@$~}xD,
h.init(data); WZewPn>#q
for(int i=0;i h.remove(); EbK0j?
System.arraycopy(h.queue,1,data,0,data.length); )u} Q:`9
} \
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private static class MaxHeap{ {^ec(EsO#
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void init(int[] data){ "&o,yd%
this.queue=new int[data.length+1]; %,V
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for(int i=0;i queue[++size]=data; D d $qQ
fixUp(size); 4_=Ja2v8;`
} LJTo\^*
} q9*MNHg}
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private int size=0; ;sOsT?)7$
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private int[] queue; .zj0Jy8N
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public int get() { `dkV_ O0
return queue[1]; v/Pw9j!r;m
} %V_-%/3Z
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public void remove() { 5 t{ja
SortUtil.swap(queue,1,size--); 6[P-Ny{z
fixDown(1); l]LxL
} \Sy7"a
file://fixdown -*ELLY[
private void fixDown(int k) { "MOpsb,
int j; 7}o/:
while ((j = k << 1) <= size) { UE0$ o?
if (j < size %26amp;%26amp; queue[j] j++; J./d!an
if (queue[k]>queue[j]) file://不用交换 PGn);Baq
break; ]!"S+gT*C
SortUtil.swap(queue,j,k); ](0mjE04<d
k = j; ^>c8t_RG
} +Wn&