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。 yX/{eX5dr
插入排序: q1Mt5O}
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package org.rut.util.algorithm.support; L}rYh`bUP[
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import org.rut.util.algorithm.SortUtil; 934@Z(aUH
/** Ko0?c.l
* @author treeroot "r1
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* @since 2006-2-2 D7=Irz!O\7
* @version 1.0 opTH6a
*/ X.ecA`0
public class InsertSort implements SortUtil.Sort{ e8S4=W
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/* (non-Javadoc) MV]`[^xQ5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6sG5n7E-A
*/ hbEqb{#}@
public void sort(int[] data) { A?ho<@^
int temp; snYeo?|b
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _|T{2LvwT
} z_Hkw3?
} M4(57b[`
} q1v7(`O
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} 5p6/dlN-a
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冒泡排序: (2UA ,
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package org.rut.util.algorithm.support; `@ny!S|1/
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import org.rut.util.algorithm.SortUtil; e+)y6Q=
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/** e4|a^lS;
* @author treeroot q" EW*k+
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* @since 2006-2-2 Kp^"<%RT
* @version 1.0 ;M~9Yr=1
*/ #<X4RJ
public class BubbleSort implements SortUtil.Sort{ 6lT< l zT
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/* (non-Javadoc) A@9\Qd
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4>OS2b`.;
*/ Zu2`IzrG#
public void sort(int[] data) { Bh'!aip k
int temp; \Zh&[D!2
for(int i=0;i for(int j=data.length-1;j>i;j--){ 9yaTDxB>
if(data[j] SortUtil.swap(data,j,j-1); w}#3 pU<<
} ]#W7-Q;]
} $2+s3)
}
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} ;Yv{)@'Bc
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} Hpa6;eT
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选择排序: bRrSd:e
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package org.rut.util.algorithm.support; Z=Cw7E
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import org.rut.util.algorithm.SortUtil; kvuRT`/
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/** %hN(79:g
* @author treeroot o.w/?
* @since 2006-2-2 .dVV#
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* @version 1.0 dQ~GE}[
*/ V8nQ/9R;
public class SelectionSort implements SortUtil.Sort { <Np Mv!g
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/* ]*'_a@h
* (non-Javadoc) wN10Drc
* U<;{_!]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {[`(o
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*/ ^*4#ZvpG2
public void sort(int[] data) { \y%"tJ~N{
int temp; mdyl;e{0
for (int i = 0; i < data.length; i++) { r]&sXKDc
int lowIndex = i; :\'1x
for (int j = data.length - 1; j > i; j--) { 0Ze&GK'Hf
if (data[j] < data[lowIndex]) { U,7
lowIndex = j; maHz3:
} qo7<g*kf~
} ;dMr2y`6
SortUtil.swap(data,i,lowIndex); yUD@oOVC0
} ^|6#Vx
} P^=B6>e
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} /3k[3
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Shell排序: =,q/FY:
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package org.rut.util.algorithm.support; <9"@<[[,
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import org.rut.util.algorithm.SortUtil; PX_9i@ZG
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/** F.x7/;
* @author treeroot W`JI/
* @since 2006-2-2 D</?|;J#/
* @version 1.0 h$$JXf
*/ HJJ)D E7;
public class ShellSort implements SortUtil.Sort{ Q?LzL(OioN
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/* (non-Javadoc) U';)]vB$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E#Ue9J
*/ ewN|">WXQ
public void sort(int[] data) { 17c`c.yP
for(int i=data.length/2;i>2;i/=2){ E&z^E2
for(int j=0;j insertSort(data,j,i); 87 B$
} BR?DW~7J j
} m(:R (K(je
insertSort(data,0,1); c)N_"#&
} ]j,o!|rx7
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/** |x1Ttr,
* @param data uEr.LCAS
* @param j >7X5/z
* @param i 6tP!(
*/ u81F^72U
private void insertSort(int[] data, int start, int inc) { -L2 +4
int temp; +/%4E %
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); :N^B54o%6
} 5>CeFy
} _C1u}1hW#
} g(s}R ?
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} ~Ni-}p
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快速排序: :4X,5X7tW=
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package org.rut.util.algorithm.support; *kF/yN
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import org.rut.util.algorithm.SortUtil; ;UX9Em
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/** yJqDB$0
* @author treeroot GpO@1 C/
* @since 2006-2-2 cw~GH
* @version 1.0 X,o ]tgg=
*/ =8p[ (<F=
public class QuickSort implements SortUtil.Sort{ kaR55
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/* (non-Javadoc) "].TKF#yg
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lu.xv6+
*/ +U<Ae^V
public void sort(int[] data) { I|>IV
quickSort(data,0,data.length-1); q4"^G:
} 98<^!mwF
private void quickSort(int[] data,int i,int j){ B1i'Mzm-4
int pivotIndex=(i+j)/2; /n,a0U/
file://swap #vBSg
SortUtil.swap(data,pivotIndex,j); X88I|Z'HIh
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int k=partition(data,i-1,j,data[j]); !g>mjD
SortUtil.swap(data,k,j); .&^M
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if((k-i)>1) quickSort(data,i,k-1); T~}g{q,tR
if((j-k)>1) quickSort(data,k+1,j); u |$GOSD
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} ke +\Z>BWN
/** b%X}{/ n
* @param data : NH'>'
* @param i Pc~)4>X<
* @param j GCcSI;w
* @return wYHyVY2tj2
*/ Z>@\!$Mc
private int partition(int[] data, int l, int r,int pivot) { \nV oBW(
do{ @(tuE
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); (%M:=zm
SortUtil.swap(data,l,r); mA3yM#
} DB] ]6
while(l SortUtil.swap(data,l,r); $:D hK
return l; U:IeMf-;
} k1FG$1.
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} rf&nTDaWI
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改进后的快速排序: G{|FV
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package org.rut.util.algorithm.support; ."v&?o
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import org.rut.util.algorithm.SortUtil; gi\UNT9x
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/** FkoN+\d
* @author treeroot TUO#6
* @since 2006-2-2 qjvIp-
* @version 1.0 s8kkf5bu
*/ Bk1gE((
public class ImprovedQuickSort implements SortUtil.Sort { ?DJ,YY9P
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private static int MAX_STACK_SIZE=4096; AyZBH&}RZ
private static int THRESHOLD=10; *
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/* (non-Javadoc) r+Y]S-o:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r|7 hm:F)
*/ L_7-y92<W
public void sort(int[] data) { #EU x1II
int[] stack=new int[MAX_STACK_SIZE]; qUp DmH
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int top=-1; o//PlG~
int pivot; o#&;,9
int pivotIndex,l,r; !7[Rhk7bW
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stack[++top]=0; kv3jbSKCT
stack[++top]=data.length-1; -n$fh::^
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while(top>0){ 7":0CU%%
int j=stack[top--]; .W%{j()op
int i=stack[top--]; b$ )XS
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pivotIndex=(i+j)/2; +#y[sKa
pivot=data[pivotIndex]; qu/59D
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SortUtil.swap(data,pivotIndex,j); fM)R O7
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file://partition *tT}y(M
l=i-1; j^~WAWbFh
r=j; ~3 z10IG
do{ ~8EG0F;t
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); SNd]c
SortUtil.swap(data,l,r); m/0t;
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} Hv1d4U"qM
while(l SortUtil.swap(data,l,r); aKC3T-
SortUtil.swap(data,l,j); T=2 91)@
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if((l-i)>THRESHOLD){ KdOy3O_5N
stack[++top]=i; k^.9;FmQ
stack[++top]=l-1; .HG0%Vp
} [0}^w[
if((j-l)>THRESHOLD){ dDy9yw%f?
stack[++top]=l+1; C@L:m1fz
stack[++top]=j; Aj4i}pT
} =GjxqIv
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} p]#%e0
file://new InsertSort().sort(data); G?d28p',.
insertSort(data); z>hG'
} u U>Bun
/** cQUmcK/,
* @param data t{K1ht$[:
*/ mi3 yiR
private void insertSort(int[] data) { ]pr;ME<M{
int temp; pFD L5
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); hun/H4f|
} 69,;=
} -`B|$ W
}
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} [>4Ou^=1
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归并排序: U)+Yh
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package org.rut.util.algorithm.support; O6;7'
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import org.rut.util.algorithm.SortUtil; icHc!m?
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/** cyG3le& +G
* @author treeroot Je+z\eT!5<
* @since 2006-2-2 KyNv)=x4c
* @version 1.0 +dk}$w[g
*/ Z@ *^4Ve
public class MergeSort implements SortUtil.Sort{ W[:
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/* (non-Javadoc) _bn*B$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d?*=<w!A
*/ BYrj#n5
public void sort(int[] data) { -D0kp~AO4N
int[] temp=new int[data.length]; *K'(t
mergeSort(data,temp,0,data.length-1); ZPY#<^WOzr
} f 6Bx>lh
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private void mergeSort(int[] data,int[] temp,int l,int r){ @%fNB,H`
int mid=(l+r)/2; jX!,xS%(
if(l==r) return ; EV z>#GC
mergeSort(data,temp,l,mid); ,l#Ev{
mergeSort(data,temp,mid+1,r); me#VCkr#
for(int i=l;i<=r;i++){ :e`;["(,
temp=data; xf?*fm?m
} u!];RHOp|
int i1=l; B_anO{3$4
int i2=mid+1; hdp;/Qz&
for(int cur=l;cur<=r;cur++){ S
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if(i1==mid+1) ^i2W=A'P
data[cur]=temp[i2++]; r:2G 11[
else if(i2>r) %%}U
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data[cur]=temp[i1++]; /Zap'S/
else if(temp[i1] data[cur]=temp[i1++]; ds,NNN<HW
else 7/w)^&8
data[cur]=temp[i2++];
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