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。 Ngn\nkf
插入排序: 58M'r{8_
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package org.rut.util.algorithm.support; >&*6Fqd
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import org.rut.util.algorithm.SortUtil; +I^+k "
/** c ,Qw;
* @author treeroot tVC@6Z$
* @since 2006-2-2 }K#iCby4
* @version 1.0 Vww@eK%5Q
*/ e@='Q H
public class InsertSort implements SortUtil.Sort{ Z}]:x
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/* (non-Javadoc) (k7;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EG'7}W
*/ i)A`Vpn
public void sort(int[] data) { P}ehNt*($
int temp; R1]v}f_I"
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _bN))9
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} gn-=##fT:i
} (2\l i{$e
} bx+(.F
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} *uk\O]
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冒泡排序: jrDz7AfA
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package org.rut.util.algorithm.support; qkIA,Kgy
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import org.rut.util.algorithm.SortUtil; tXssejiE%
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/** dbf^A1HI
* @author treeroot e_fg s>o`(
* @since 2006-2-2 },?-$eyX
* @version 1.0 7H8GkuO
*/ O^QR;<t'
public class BubbleSort implements SortUtil.Sort{ P^'>dOI0w
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/* (non-Javadoc) *Y|lO
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Bbn832iMUY
*/ #o(?g-3
public void sort(int[] data) { *!-}lc^4
int temp; h$#4ebp
for(int i=0;i for(int j=data.length-1;j>i;j--){ (.jO:#eE%
if(data[j] SortUtil.swap(data,j,j-1); ?^e*UJNM
} z|t.y.JX
} ;j[q?^ b
} *so6]+)cU
} X m_Ub>N5
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} ;/6:lL
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选择排序: @LwVmR |{
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package org.rut.util.algorithm.support; `Gy>tD.#V-
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import org.rut.util.algorithm.SortUtil; Z_eqM4{
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/** V^/h;/!^
* @author treeroot 0C4*F
* @since 2006-2-2 \rw'QAi8r
* @version 1.0 cG~_EX$
*/ T1g:gfw@
public class SelectionSort implements SortUtil.Sort { s5_1}KKCs
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/* BMtYM{S6
* (non-Javadoc) Q rrZF.
* >o=axZNa
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;n:H6cp
*/ AOvH&9**
public void sort(int[] data) { @n~ND).
int temp; y$;zTH_6j
for (int i = 0; i < data.length; i++) { o$qFa9|Ec?
int lowIndex = i; .q'FSEkMJ
for (int j = data.length - 1; j > i; j--) { L@^!(
if (data[j] < data[lowIndex]) { !'6J;Fb#
lowIndex = j; gvwCoCbb
} JY;#]'T\;
} MRxo|A{
SortUtil.swap(data,i,lowIndex); 0X}w[^f
} 5BGv^Qb_2
} R, (+NT$
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} U8.0 L
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Shell排序: c+\Gd}IJq
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package org.rut.util.algorithm.support; ,M9hb<:m
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import org.rut.util.algorithm.SortUtil; Q%b46"
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/** 'E4(!H,k
* @author treeroot \[hrG?A
* @since 2006-2-2 N]<~NG:6b
* @version 1.0 F0o18k_"
*/ Ov{B-zCA
public class ShellSort implements SortUtil.Sort{ `b,g2XA
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/* (non-Javadoc) "p_[A
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5"Xo R)
*/ 6b1 Uj<
public void sort(int[] data) { rqG6Ll`=+
for(int i=data.length/2;i>2;i/=2){ 7zOvoQ}
for(int j=0;j insertSort(data,j,i); dsft=t8s
}
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} fSb@7L
insertSort(data,0,1); u{y5'cJ{
} ^,\se9=(
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/** 0^tJX1L
* @param data I?xhak1)lu
* @param j H6+st`{
* @param i BRQ5
*/ LnACce
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private void insertSort(int[] data, int start, int inc) { BM}a?nnoc
int temp; t3h \.(mq
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ~NJL S-
} hJtghG6v
} kQ:>j.^e
} E<.{
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} _d"Y6
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快速排序: )7 BNzj"~
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package org.rut.util.algorithm.support; \?Oa}&k$F8
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import org.rut.util.algorithm.SortUtil; UW~tS
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/** _M[[o5{
* @author treeroot (>/Dw|,m
* @since 2006-2-2 uc
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* @version 1.0 ieK'<%dxF
*/ ]&%X(jWyn
public class QuickSort implements SortUtil.Sort{ z@40g)R2A
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/* (non-Javadoc) _[6+FdS],
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) os0"haOI9h
*/ 'G
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public void sort(int[] data) { <GU(/S!}
quickSort(data,0,data.length-1); [_z2z6
} S&g-
private void quickSort(int[] data,int i,int j){ B?>#cpWj
int pivotIndex=(i+j)/2; c[eGpZ]
file://swap E9NGdp&-Ah
SortUtil.swap(data,pivotIndex,j); mm~o%1|WR
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int k=partition(data,i-1,j,data[j]); 9hi(P*%q
SortUtil.swap(data,k,j); |kRx[UL
if((k-i)>1) quickSort(data,i,k-1); W!Os ci
if((j-k)>1) quickSort(data,k+1,j); !EC\1rmdlN
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} gbi~!S-
/** w[7HY@[
* @param data l=G#gKE
* @param i 'Rf#1ls#
* @param j qv >(
* @return XT;IEZQZ
*/ 7UnO/K7oB.
private int partition(int[] data, int l, int r,int pivot) { v?iH}7zb%Q
do{ vt7C
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); :=fHPT
SortUtil.swap(data,l,r); 2tTV5,(1
} ZtZV:re=
while(l SortUtil.swap(data,l,r); a[OLS+zf!P
return l; A&|(%
} m_W.r+s~C4
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} [aVJYr2
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改进后的快速排序: '48|f`8$
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package org.rut.util.algorithm.support; eT
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import org.rut.util.algorithm.SortUtil; #hiDZ>nr
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/** h.0&)t\q"
* @author treeroot Ptxc9~k
* @since 2006-2-2 P<oD*C
* @version 1.0 &Fr68HNmj
*/ n!,TBCNX
public class ImprovedQuickSort implements SortUtil.Sort { '
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private static int MAX_STACK_SIZE=4096; &_TjRj"
private static int THRESHOLD=10; ~]s"PV:|
/* (non-Javadoc) s~'C'B?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l3
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*/ iK23`@&%_
public void sort(int[] data) { [\y>&"uk
int[] stack=new int[MAX_STACK_SIZE]; >TVd*S
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int top=-1; U0=zuRr n
int pivot; 246!\zf
int pivotIndex,l,r; /-9+(
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stack[++top]=0; {}2p1-(
stack[++top]=data.length-1; k:yu2dQh
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while(top>0){ mAERZ<I
int j=stack[top--]; T[II;[EiE
int i=stack[top--]; ~ZIRCTQ"
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pivotIndex=(i+j)/2; }Bg<Fm
pivot=data[pivotIndex]; "uNxKLDB
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SortUtil.swap(data,pivotIndex,j); _A~gqOe
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file://partition Jm^jz
l=i-1; nf^k3QS\
r=j; t|,Ex 7
do{ +opN\`
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); '%7]xp
SortUtil.swap(data,l,r); a#j^gu$m
} 3Q"+
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while(l SortUtil.swap(data,l,r); $+N^ s^
SortUtil.swap(data,l,j); C\h<02
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if((l-i)>THRESHOLD){ O/~^}8TLL
stack[++top]=i; F'Vl\qPt
stack[++top]=l-1; =f|a?j,f~
} kV<)>Gs
if((j-l)>THRESHOLD){ H2KY$;X[
stack[++top]=l+1; 2$UR"P
stack[++top]=j; q{(&:~M
} !Z)^c&
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} (ytkq(
file://new InsertSort().sort(data); I(S6DkU
insertSort(data); QQcj"s
} ^%^0x'"
/** 9jO+ew
* @param data U$Z}<8
*/ I'YotV7
private void insertSort(int[] data) { (`xnA~BN
int temp; dkC / ?R
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); B\yq%m
} pP&M]'
} ^a5>`W
} {HDlv[O%
z#/*LP#oY
} c^k.
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归并排序: K>eG5tt
1=.?KAXR
package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; >$F]Ss)$
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/** RkM! BcB
* @author treeroot b>WT-.b0
* @since 2006-2-2 {xH@8T$DX
* @version 1.0 :Aw VeX@
*/ J_$~OEC~
public class MergeSort implements SortUtil.Sort{ :Yqa[._AF
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/* (non-Javadoc) sxtGl^,mU:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RJD3o_("K
*/ 7m:, -xp
public void sort(int[] data) { _{%H*PxTn=
int[] temp=new int[data.length]; 8E{>czF"
mergeSort(data,temp,0,data.length-1); PMcyQ2R->
} A\Gw+l<h,
RwWQ$Eb_s
private void mergeSort(int[] data,int[] temp,int l,int r){ lla96\R
int mid=(l+r)/2; Po3W+;@
if(l==r) return ; f_8~b0`
mergeSort(data,temp,l,mid); jEI L(0_H
mergeSort(data,temp,mid+1,r); 8b!_b2Za
for(int i=l;i<=r;i++){ WTx;,TNG
temp=data; L8Q!6oO=<
} Y`uCDfcQ
int i1=l; htaLOTO;A
int i2=mid+1; J;dFmZOk
for(int cur=l;cur<=r;cur++){ ;q2T*4NN
if(i1==mid+1) 6~LpBlb
data[cur]=temp[i2++]; Ok!{2$P8U9
else if(i2>r) ;U&VPIX$
data[cur]=temp[i1++]; rv:O|wZ
else if(temp[i1] data[cur]=temp[i1++]; "5K:"m
else |~Iw
data[cur]=temp[i2++]; AP%h!b5v
} da@
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} QR4o j
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} 2_Z60]
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改进后的归并排序: It[ ~0?+
FBsw\P5w
package org.rut.util.algorithm.support; `u-Y 5mY
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import org.rut.util.algorithm.SortUtil; 6%-2G@6d
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/** MZ'HMYed
* @author treeroot C'ZU .Y
* @since 2006-2-2 {YFru6$
* @version 1.0 }- Sr@bE
*/ RiklwR#~r/
public class ImprovedMergeSort implements SortUtil.Sort { szHUHW~;J
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private static final int THRESHOLD = 10; G`jhzG
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/* vq}V0-
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* (non-Javadoc) 4)_ [)MZ\j
* OuoZd!"qf
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $)3/N&GXR
*/ aO1cd_d6x_
public void sort(int[] data) { ZfU_4Pl->
int[] temp=new int[data.length]; 43Q&<r$[T
mergeSort(data,temp,0,data.length-1); n !QjptQ
} N@}U ;x}
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private void mergeSort(int[] data, int[] temp, int l, int r) { 6x 0>E^~
int i, j, k; hjE9[{K
int mid = (l + r) / 2; 1K>4i. X
if (l == r) Rjf|
return; ?k#%AM
if ((mid - l) >= THRESHOLD) 8Bhng;jX
mergeSort(data, temp, l, mid); u8*0r{kOH
else mN{$z<r
insertSort(data, l, mid - l + 1); dn Xc- <
if ((r - mid) > THRESHOLD) +] #>6/2q
mergeSort(data, temp, mid + 1, r); V4 7Fp
else @azS)4L
insertSort(data, mid + 1, r - mid); WKG=d]5
-}%zus5
for (i = l; i <= mid; i++) { Po5}Vh
temp = data; j[9B,C4
} wP%;9y2B
for (j = 1; j <= r - mid; j++) { ;$Y?j8g
temp[r - j + 1] = data[j + mid]; 04s N4C
} f5N~K>
int a = temp[l]; f: Rh9
int b = temp[r]; *M{1RMc
for (i = l, j = r, k = l; k <= r; k++) { 2}NfR8
N
if (a < b) { M`(xAVl
data[k] = temp[i++]; sEoS[t|"
a = temp; -Jhf]
} else { *)`:Nm~y
data[k] = temp[j--]; qcK)J/K"
b = temp[j]; ^/c|s!U^
} 0t) IWD
} fqcyCu7Ep
} hm&~6rB
-$7Jc=:>
/** /<mc~S7
* @param data \sk,3b-&'
* @param l [-l^,,E
* @param i Uc4r
*/ J(Bn
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private void insertSort(int[] data, int start, int len) { '&"7(8E}
*
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); V#=N?p
} \ .:CL?m#
} 4ngiad6bR
} Ct B>
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} g$A1*<+
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堆排序: RKe19l_V
E( TY%wO
package org.rut.util.algorithm.support; b`^$2RM&
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import org.rut.util.algorithm.SortUtil; )T>a|.
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/** @-hy:th#
* @author treeroot h.67]U7m
* @since 2006-2-2 4EOu)#
* @version 1.0 k2xjcrg
*/ 69_c,(M0
public class HeapSort implements SortUtil.Sort{ `q F:rQ
lU\|F5O@#
/* (non-Javadoc) qB8<(vBP+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %hXa5}JL
*/ a(m#GES
public void sort(int[] data) { j#-74{Y$
J
MaxHeap h=new MaxHeap(); 7|{QAv
h.init(data); NWKD:{
for(int i=0;i h.remove(); 1r;Q5[@
System.arraycopy(h.queue,1,data,0,data.length); 46mu,v
}
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&oT]ycz%
private static class MaxHeap{ tvd/Y|bV=
)&*&ZL0
void init(int[] data){ Jap
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this.queue=new int[data.length+1]; 0hPm,H*Y]
for(int i=0;i queue[++size]=data; .9`.\v6R
fixUp(size); 0py0zE6,,
} il:+O08_
} _3)~{dQ+
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private int size=0; U7{,
*
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private int[] queue; b+w|3bQa
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public int get() { \wTWhr0
return queue[1]; HSTtDTo
} hGPjH=^EM
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0 @@
public void remove() { ll6~8PN
SortUtil.swap(queue,1,size--); :
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