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。 @C^wV
插入排序: K)5j
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package org.rut.util.algorithm.support; ]k'^yc{5
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import org.rut.util.algorithm.SortUtil; _3< P(w{
/** qDU4W7|T`
* @author treeroot >|yP`m
* @since 2006-2-2 p_X{'=SQ1
* @version 1.0 m)3M) 8t
*/ i,S1|R
public class InsertSort implements SortUtil.Sort{ xaVn.&Wl
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/* (non-Javadoc) 1z4_QZZ.NG
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -y{(h%6
*/ WdlGnFAWh
public void sort(int[] data) { ]^T-X/v9
int temp; `oH4"9&]k3
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); )(_NFpM
} iQS,@6
} oOC&w0
} x/wgD'?
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} p|8ZHR+
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冒泡排序: \KzJNCOT
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package org.rut.util.algorithm.support; *8po0s
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import org.rut.util.algorithm.SortUtil; *HUXvX|-%
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/** qDYNY`
* @author treeroot 1U/RMN3`
* @since 2006-2-2 )RT?/N W
* @version 1.0 ([}08OW@
*/ 9[;da
public class BubbleSort implements SortUtil.Sort{ }WaZ+Mdg\
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/* (non-Javadoc) 9x|`XAB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C#^y{q
*/ jT}={[9b
public void sort(int[] data) { MtaGv#mJ
int temp; ^m&I^ \
for(int i=0;i for(int j=data.length-1;j>i;j--){ :8hI3]9
if(data[j] SortUtil.swap(data,j,j-1); Rb. vyQ
} }z$_!)/i
} dR;N3KwY
} #o7)eKeQ
} cjJfxD&q
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} |w54!f6w_
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选择排序: @c'iT20
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package org.rut.util.algorithm.support; 0c`nk\vUy
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import org.rut.util.algorithm.SortUtil; 6h2keyod
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/** JJ%@m;~
* @author treeroot CbC[aVA=
* @since 2006-2-2 /e|Lw4$@S
* @version 1.0 u!5q)>Wt(
*/ s)`(@"{
public class SelectionSort implements SortUtil.Sort { bxtH`^
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/* ..X _nF
* (non-Javadoc) -Dx3*Zh P
* v_Sa0}K9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ",D!8>=s
*/ DXI4DM"15I
public void sort(int[] data) { ZTV)D
int temp; ]% HxzJ
for (int i = 0; i < data.length; i++) { I;%1xdPt
int lowIndex = i; \X _}\_c,d
for (int j = data.length - 1; j > i; j--) { _uLpU4# ?
if (data[j] < data[lowIndex]) { BDvkY
lowIndex = j; ,]7ouH$H}
} HI 1T
} t(6]j#5
SortUtil.swap(data,i,lowIndex); }DS%?6}Sy
} GIH{tr1:<
} wT\BA'VQ
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} 7@%qm|i>w
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Shell排序: G}g;<,g~
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package org.rut.util.algorithm.support; UMe?nAC
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import org.rut.util.algorithm.SortUtil; t;6<k7h
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/** F
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* @author treeroot Q=Mv"~2>B
* @since 2006-2-2 `G1"&q,i
* @version 1.0 8wvHg_U6W
*/ {)l Zfj}l
public class ShellSort implements SortUtil.Sort{ M,@M5o2u
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/* (non-Javadoc) T`":Q1n
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <O0tg[ub
*/ i0K 2#}=^
public void sort(int[] data) { PdqvXc
for(int i=data.length/2;i>2;i/=2){ ?Y3i-jY
for(int j=0;j insertSort(data,j,i); Zf3(!
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} Ig}hap]G
} 5=I({=/>
insertSort(data,0,1); i/+^C($'f
} r=0PW_r:
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/** Ie/_gz^
* @param data <<u]WsW{C
* @param j (m:Q'4Ep
* @param i QUn!&55
*/ 6E-eD\?I&
private void insertSort(int[] data, int start, int inc) { m;l[flQ~
int temp; @9|
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for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); +;lDU}$
} A{T9-f@X
} E> GmFw
} <b,WxR`
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} 4"kc(J`c
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快速排序: nUpj+F#
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package org.rut.util.algorithm.support; f&4+-w.:V|
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import org.rut.util.algorithm.SortUtil; s(3u\#P
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/** _Sfu8k>):
* @author treeroot ~6kF`}5
* @since 2006-2-2 n'^`;-
* @version 1.0 |.$B,cEd
*/ \#]%S/_ A
public class QuickSort implements SortUtil.Sort{ Mb2a;s
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/* (non-Javadoc) -d'FKOD
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M?sax+'
*/ :?zq!
public void sort(int[] data) { z0/+P
quickSort(data,0,data.length-1); Z40k>t
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} nc:/GxP
private void quickSort(int[] data,int i,int j){ g 4=1['wW
int pivotIndex=(i+j)/2; t;VMtIW+E
file://swap c=\ _[G(
SortUtil.swap(data,pivotIndex,j); wi7Br&bGi
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int k=partition(data,i-1,j,data[j]); ;X+tCkzF
SortUtil.swap(data,k,j); e8> X5
if((k-i)>1) quickSort(data,i,k-1); sx=1pnP9`
if((j-k)>1) quickSort(data,k+1,j); KBtqtE'(L
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} #BP0MY&
/** 2WH(c$6PWf
* @param data 7QTS@o-
* @param i 6AJ`)8HX
* @param j mz.,j(Ks-
* @return m<3. X"-
*/ 2QbKh)
private int partition(int[] data, int l, int r,int pivot) { eR5q3E/;G
do{ HN NeH;L
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ?
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SortUtil.swap(data,l,r); /ojwOJ
} /c=8$y\%@
while(l SortUtil.swap(data,l,r); s3JzYDpy
return l; !`=iKe&%E
} A'jL+dI.
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} mv:@ D
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改进后的快速排序: \Qah*1
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package org.rut.util.algorithm.support; RyX11XU
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import org.rut.util.algorithm.SortUtil; ;hq_}.
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/** N7"cMAs\G
* @author treeroot {ObY1Y`ea
* @since 2006-2-2 }rmr0Bh
* @version 1.0 OXM=@B<"
*/ S;Sy.Lp
public class ImprovedQuickSort implements SortUtil.Sort { s-Gd{=%/q
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private static int MAX_STACK_SIZE=4096; oe^JDb#
private static int THRESHOLD=10; n
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/* (non-Javadoc) 83V\O_7j
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #pAN
*/ }|Q\@3&
public void sort(int[] data) { =3'B$PY
int[] stack=new int[MAX_STACK_SIZE]; 1N $OXLu
{ /!ryOA65
int top=-1; igTs[q=Ak
int pivot; IxWi>8
int pivotIndex,l,r; ?E!M%c@,
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stack[++top]=0; OjffN'a+N
stack[++top]=data.length-1; -:_3N2U=+
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while(top>0){ aU.3
int j=stack[top--]; %u9Q`
int i=stack[top--]; }KUK|p5
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pivotIndex=(i+j)/2; g/$RuT2U
pivot=data[pivotIndex]; GL0P&$h
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SortUtil.swap(data,pivotIndex,j); R$u1\r1I
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file://partition :yJ#yad
l=i-1; jt6_1^
r=j; 1
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do{ ?Mo)&,__
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); = =pQ
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SortUtil.swap(data,l,r); ZGh6- /
} ;>ml@@Z
while(l SortUtil.swap(data,l,r); #o~C0`8!B=
SortUtil.swap(data,l,j); %?V~7tHm>
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if((l-i)>THRESHOLD){ `Zmdlp@
stack[++top]=i; a6h+?Q7uF
stack[++top]=l-1; `j'1V1
} 6X'0 T}
if((j-l)>THRESHOLD){ 7fWZ/;p
stack[++top]=l+1; 8H};pu2
stack[++top]=j; |ul{d|
} % mPv1$FH
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} VPO~veQ
file://new InsertSort().sort(data); 3hJ51=_0^
insertSort(data); M7Xn=jc
} b~<V}tJ
/** zI^:{]p
* @param data UT{`'#iT
*/ Dby|l#X
private void insertSort(int[] data) { dlZ2iDQ%
int temp; dhP")@3K;p
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); nZYO}bv\
} aEa.g.SZ
} kene'
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} ,V5fvHPH)8
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} ^pY8'LF6
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归并排序: T%"wz3~
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package org.rut.util.algorithm.support; .*"KCQGOgM
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import org.rut.util.algorithm.SortUtil; /ioBc}]
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/** A[fTpS ~~%
* @author treeroot hDg"?{
* @since 2006-2-2 Fku<|1}&y
* @version 1.0 7N OF^/nU
*/ WCqa[=v)t
public class MergeSort implements SortUtil.Sort{ C
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/* (non-Javadoc) W%&s$b(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?%ltoezf
*/ I%Z=O=
public void sort(int[] data) { b!J?>du
int[] temp=new int[data.length]; G[`2Nd<
mergeSort(data,temp,0,data.length-1); PD^ 6Ywn>s
} /={N^8^=x
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private void mergeSort(int[] data,int[] temp,int l,int r){ 8ZjRMr}
int mid=(l+r)/2; }{PG^ Fc<P
if(l==r) return ; icVB?M,m
mergeSort(data,temp,l,mid); G"L`9E<0V
mergeSort(data,temp,mid+1,r); 3,hu3"@k
for(int i=l;i<=r;i++){ |eye) E:
temp=data; f*xv#G
} :YX5%6
int i1=l; iN0'/)ar
int i2=mid+1; fV6ddh
for(int cur=l;cur<=r;cur++){ 'F/uD1;
if(i1==mid+1) e=#D1
data[cur]=temp[i2++]; lc [)Ev
else if(i2>r) p,(W?.ZDN?
data[cur]=temp[i1++]; c*R\fQd
else if(temp[i1] data[cur]=temp[i1++]; Ed-3-vJej6
else h~._R6y
data[cur]=temp[i2++]; I;?PDhDb
} nHF~a?|FT
} e6 <9`Xg
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} |RXXj [z
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改进后的归并排序: 2zv:j7
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package org.rut.util.algorithm.support; heWQPM|s
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import org.rut.util.algorithm.SortUtil; Ne3YhCC>
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/** F]<2nb7
* @author treeroot y>T>
* @since 2006-2-2 IQd~`
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* @version 1.0 Tgla_sMb
*/ MU '-
public class ImprovedMergeSort implements SortUtil.Sort { ,@M<O!%Cs
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private static final int THRESHOLD = 10; Azr|cKu]
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/* T>hm\ !
* (non-Javadoc) XW2ZQMos1
* 5xj8^W^G9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "So"oT1
*/ (?GW/pLK]
public void sort(int[] data) { 1BP/,d |+
int[] temp=new int[data.length]; sS4V(:3s
mergeSort(data,temp,0,data.length-1); 3=Uy t
} 2o1WXE %$
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private void mergeSort(int[] data, int[] temp, int l, int r) { =E(ed,gH8
int i, j, k; oS Ybx:2wo
int mid = (l + r) / 2; jlqSw4_
if (l == r) MIiBNNURX
return; Z@*!0~NH=4
if ((mid - l) >= THRESHOLD) tef>Py
mergeSort(data, temp, l, mid); !4Sd ^"
else ;v.J
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insertSort(data, l, mid - l + 1); r%$\Na''
if ((r - mid) > THRESHOLD) #3RElI
mergeSort(data, temp, mid + 1, r); (WY9EJ<s,
else v:w^$]4
insertSort(data, mid + 1, r - mid); NMC0y|G
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for (i = l; i <= mid; i++) { t0/Ol'kgs
temp = data; cBOt=vg,5
} 4?
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for (j = 1; j <= r - mid; j++) { 1M55!b
temp[r - j + 1] = data[j + mid]; :v$)Z~
} ,iZKw8]f
int a = temp[l]; d{ B0a1P
int b = temp[r]; bcxR7<T,"9
for (i = l, j = r, k = l; k <= r; k++) { t56PzT'M
if (a < b) { {%&04yq+
data[k] = temp[i++]; S<i.O
a = temp; 2#/sIu-L
} else { 4 +p1`
data[k] = temp[j--]; ^q%f~m,O<
b = temp[j]; nYvkeT
} Lm1JiPs d
} _)YB*z5
} U 17=/E
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/** XgeUS;qtta
* @param data 7xWJw
* @param l `fG<iBD
* @param i :2wT)w z
*/ *1:kIi7_
private void insertSort(int[] data, int start, int len) { Q]RE,ZZ
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); DFRgn
} id`RscV]
} >f1fvv6
} `JGW8 _
} jzWgyI1b
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堆排序: fwUF5Y
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