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。 "h{q#~s
插入排序: !`Fxa4i>
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package org.rut.util.algorithm.support; [_R~%Yh+'E
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import org.rut.util.algorithm.SortUtil; CpUkCgg
/** o5Dk:Bw
* @author treeroot x[FJgI'r
* @since 2006-2-2 lHN5Dr
* @version 1.0 c,np2myd
*/ u@Ih GME
public class InsertSort implements SortUtil.Sort{ \pa"%c)
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/* (non-Javadoc) ?ZV/U!y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u1J0$
*/ w$3,A$8
public void sort(int[] data) { .0zY}`
int temp; }^ApJS(FQ
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); pNG:0
} 7Od
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} y;35WtDVb
} j+i\bks
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} Ep9nsX*
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冒泡排序: zJq~!#pZ
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package org.rut.util.algorithm.support; RD!&LFz/}
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import org.rut.util.algorithm.SortUtil; l.67++_
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/** 8}I$'x
* @author treeroot ~Otq %MQ
* @since 2006-2-2 v> LIvi|]
* @version 1.0 h9t$Uz^N
*/ Mo|;'+
public class BubbleSort implements SortUtil.Sort{ r<9Iof4
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/* (non-Javadoc) ;,hwZZA
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @:oXN]+
_
*/ Ot4 Z{mA
public void sort(int[] data) { b)6D_Az7c
int temp; %R}qg6dL
for(int i=0;i for(int j=data.length-1;j>i;j--){ T:27r8"Rh
if(data[j] SortUtil.swap(data,j,j-1); OV1_|##LC
} JA %J$d
} \ ZgE
} /Wi[OT14
} cq,S P&T~
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} &y\prip
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选择排序: n<Z({\9&H
y*4=c_Z
package org.rut.util.algorithm.support; :vmH]{R
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import org.rut.util.algorithm.SortUtil; 8o3E0k1
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/** ..IfP@
* @author treeroot VpE*(i$
* @since 2006-2-2 ~8PZ5;g
* @version 1.0 L^r#o-H<
*/ GB23\Yv
public class SelectionSort implements SortUtil.Sort { >@U*~Nz
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/* GoJ.&aH $
* (non-Javadoc) KI.q@zO6|
* /MIe(,>Uh
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QJZK|*
*/ qLO4#CKCL6
public void sort(int[] data) { Xe3U`P7(
int temp; R4[N:~Z$|
for (int i = 0; i < data.length; i++) { G~F b
int lowIndex = i; B7VH<;Z
for (int j = data.length - 1; j > i; j--) { .yMEIUm
if (data[j] < data[lowIndex]) { OC_+("N
lowIndex = j; ~k"=4j9
} piJu+tUy
} ~Q Oe##
SortUtil.swap(data,i,lowIndex); F|IAiE
} @D]5c ivm_
} ^ sOQi6pL
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} &xU[E!2H%
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Shell排序: cutu DZ
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package org.rut.util.algorithm.support; +! ]zA4x
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import org.rut.util.algorithm.SortUtil; .6ylZ
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/** 9)h"-H;5:
* @author treeroot )cX*I gO
* @since 2006-2-2 9>=;FY
* @version 1.0 9"N~yKa`"K
*/ +G$4pt|=
public class ShellSort implements SortUtil.Sort{ >f|||H}Snw
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/* (non-Javadoc) "SNn^p59k
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |'e^QpU5
*/ ^-TE([ bW
public void sort(int[] data) { l#g\X'bK
for(int i=data.length/2;i>2;i/=2){ Z]A{ d[
for(int j=0;j insertSort(data,j,i); )!3V/`I
} M-$%Rzl_
} lXx=But
insertSort(data,0,1); L 8c0lx}Nn
} sG(~^hJ_
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/** s%vis{2
* @param data /Y/UM3/
* @param j ^+*N%yr
* @param i 5 )A1\
*/ fZ6MSAh
private void insertSort(int[] data, int start, int inc) { |5X^u+_
int temp; jSJqE_ 1
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); M f}~{+
} c_dVWh e
} zKyyU}LHH
} I
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} !`M,XSp(
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快速排序: I:E`PZ
B~?*?Z'
package org.rut.util.algorithm.support; ,[N%Q#
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import org.rut.util.algorithm.SortUtil; '<gI8W</
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/** g!|=%(G=
* @author treeroot [NF'oRRD9s
* @since 2006-2-2 ^dI424
* @version 1.0 kPKB|kP\
*/ ,j#XOy`mzy
public class QuickSort implements SortUtil.Sort{ V"[g.%%Y
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/* (non-Javadoc) hE &xE;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G?9"Y%
*/ EW}Bz h>b
public void sort(int[] data) { ##q2mm:a9P
quickSort(data,0,data.length-1); q?Cnav`DY
} 3Lfqdqj
private void quickSort(int[] data,int i,int j){ SDC4L <!
int pivotIndex=(i+j)/2; R1s`z|?
file://swap 'Y?"{HZ
SortUtil.swap(data,pivotIndex,j); x/%aM1"X^
1]d!~
int k=partition(data,i-1,j,data[j]); ru'F6?d
SortUtil.swap(data,k,j); 9-sw!tKx
if((k-i)>1) quickSort(data,i,k-1); QpF;:YX^3
if((j-k)>1) quickSort(data,k+1,j); vXev$x=w-
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} H(H<z,$}T
/** Oylf<&knF\
* @param data 0!D4pvlt
* @param i u6J8"<
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* @param j c\/=iVw,
* @return hl;u'_AB
*/ seba9y
private int partition(int[] data, int l, int r,int pivot) { CYt?,qk-r
do{ [Hx0`Nc K
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); t Cw<Ip
SortUtil.swap(data,l,r); 3t.l5m
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} Z3%}ajPu[
while(l SortUtil.swap(data,l,r); K>
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return l; CVDV)#JA
} x!hh"x
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} jY&k
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改进后的快速排序: &`h{iK7
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package org.rut.util.algorithm.support; c& <Fr[AK
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import org.rut.util.algorithm.SortUtil; u]:oZMnj
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/** V[mT<Lc
* @author treeroot 2v :]tj
* @since 2006-2-2 Pi=+/}
* @version 1.0 ;$HftG>B
*/ x-XD.qh7Hr
public class ImprovedQuickSort implements SortUtil.Sort { Z~GL5]S
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private static int MAX_STACK_SIZE=4096;
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private static int THRESHOLD=10; 4d"r^y'
/* (non-Javadoc) SfA\}@3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \S_Ou
*/ G3txj
public void sort(int[] data) { CJtcn_.F
int[] stack=new int[MAX_STACK_SIZE]; .b_)%jd x
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int top=-1; #HYr0Tw6`
int pivot; Nv$R\' 3
int pivotIndex,l,r;
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stack[++top]=0; JR'
stack[++top]=data.length-1; vp1941P
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while(top>0){ 8."]//V
int j=stack[top--]; \Bz_p'[G
int i=stack[top--]; Y21g{$~Q{
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pivotIndex=(i+j)/2; &)2i[X
pivot=data[pivotIndex]; oVnvO iAc
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SortUtil.swap(data,pivotIndex,j); 1}S S+>`
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file://partition bw(a6qKK
l=i-1; #:jHp44J
r=j; V4hiGO[
do{ ><RpEnWZ<
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); G, 44va
SortUtil.swap(data,l,r); ^/uA?h:]\
} f W!a|?e$
while(l SortUtil.swap(data,l,r); 9FoHD
SortUtil.swap(data,l,j); P|^f0Rw3.
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if((l-i)>THRESHOLD){ imo$-}A
stack[++top]=i; _uWpJhCT
stack[++top]=l-1; B3: ez
jj
} ZLc -RM
if((j-l)>THRESHOLD){ %}[i'rT>
stack[++top]=l+1; v5/~-uRL%
stack[++top]=j; @_-hk|Nl@
} 9"NF/)_
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} -O1>|y2rU
file://new InsertSort().sort(data); au N6prGe
insertSort(data); ,bXe<L)
} jGJLSEe_
/** .I$qCb|FP
* @param data kd>hhiz|
*/ fA&k`L(y
private void insertSort(int[] data) { k@\ iGqo
int temp; FFl!\y*0z
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); cIUHa
} \}+_Fo/
} ? 8)'oMD
} `V=N*hv`
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} 6q*9[<8
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归并排序: k\wW##=v
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package org.rut.util.algorithm.support; <W|3\p6
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import org.rut.util.algorithm.SortUtil; 1G"z<v
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/** l2`s! ,<>O
* @author treeroot "K ~
* @since 2006-2-2 k;2GEa]w
* @version 1.0 |"?M 1*g
*/ FI[A[*fi
public class MergeSort implements SortUtil.Sort{ 3Q"<<pi!~
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/* (non-Javadoc) pSoiH<33
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +GG9^:<yr
*/ [6 pD
public void sort(int[] data) { pN!}UqfI-
int[] temp=new int[data.length]; ~:0sk"t$1
mergeSort(data,temp,0,data.length-1); qJ;jfh!
} ATJWO1CtB
3%l*N&gsg:
private void mergeSort(int[] data,int[] temp,int l,int r){ ]@dZ{H|
int mid=(l+r)/2; 1=t>HQ
if(l==r) return ; }]e-{C}
mergeSort(data,temp,l,mid); ,kF1T,
mergeSort(data,temp,mid+1,r); C.~,qmOP
for(int i=l;i<=r;i++){ rk&IlAE
temp=data; N6>(;ugJ1-
} f) zn TJL
int i1=l; "*($cQ$v
int i2=mid+1; )n+Lo&C<
for(int cur=l;cur<=r;cur++){ wy yWyf
if(i1==mid+1) |P[w==AAf
data[cur]=temp[i2++]; ,eOB(?Ku
else if(i2>r) C+'/>=>a.
data[cur]=temp[i1++]; vo`2\R.
else if(temp[i1] data[cur]=temp[i1++];
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else uPhK3nCGo
data[cur]=temp[i2++]; t,,k
} io _1Y]N
} -!q:p&c
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} V\{clJ\U
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改进后的归并排序: 'U1R\86M
ADS9DiX/
package org.rut.util.algorithm.support; _/F7?^j
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import org.rut.util.algorithm.SortUtil; %Qc La//
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/** >v:y?A,
* @author treeroot
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* @since 2006-2-2 {F3xJ[
* @version 1.0 (gy#js#
*/ &{ay=Mj
public class ImprovedMergeSort implements SortUtil.Sort { 0":ib0=
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private static final int THRESHOLD = 10; z,Medw6[
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/* u&`XB|~
* (non-Javadoc) >CrA;\l
* d_CKP"TA
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <%($7VMev
*/ o4j[p3$
public void sort(int[] data) { .JYaH?
int[] temp=new int[data.length]; Q(lo{AFc
mergeSort(data,temp,0,data.length-1); K&bzDzd `
} 4NGA/
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private void mergeSort(int[] data, int[] temp, int l, int r) { U[SaY0Z
int i, j, k; I`p+Qt
int mid = (l + r) / 2; wN`jE0
{
if (l == r) ^?U!pq-`
return; q
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if ((mid - l) >= THRESHOLD) 61.Brp.eP
mergeSort(data, temp, l, mid); J!0DR4=Xi
else !6BW@GeF]
insertSort(data, l, mid - l + 1); :ZTc7}
if ((r - mid) > THRESHOLD) g,}_G3[j0m
mergeSort(data, temp, mid + 1, r); ^oVs+ vC
else |s"nM<ZNZ
insertSort(data, mid + 1, r - mid); Nd`%5%'::
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for (i = l; i <= mid; i++) { 9
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temp = data; -}=i 04^
} ,u!*2cWN
for (j = 1; j <= r - mid; j++) { G;&-\0>W
temp[r - j + 1] = data[j + mid]; 1KMLG=
} y<HO:kZ8`
int a = temp[l]; W{%TlN
int b = temp[r]; K&nE_.kbl
for (i = l, j = r, k = l; k <= r; k++) { v 0
}@
if (a < b) { n1JRDw"e$$
data[k] = temp[i++]; hn^<;av=
a = temp; sp#p8@Cj
} else { /]=C{)8
data[k] = temp[j--]; wp#'nO
b = temp[j]; 9S-Z&2L
} PUF/#ck
} _&N2'hG=sn
} TcIcS]w%
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/** \n{qsf:
* @param data {. 2k6_1[
* @param l :E_g"_
* @param i z*kutZ:6Y
*/ MNC*Glj=
private void insertSort(int[] data, int start, int len) { CsTF
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 9;_sC
} 1nQWW9i
} b?TO=~k,
} ?3*l{[@J
} z54EG:x.7^
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堆排序: ^.#jF#u~
vV[eWd.o6M
package org.rut.util.algorithm.support; *RXbc~
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import org.rut.util.algorithm.SortUtil; 9{-EJ)
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/** WKT4D}{1
* @author treeroot `wus\&!W
* @since 2006-2-2 3D`YZ#M
* @version 1.0 l%?T2Fm3>
*/ 3|1ilP
public class HeapSort implements SortUtil.Sort{ w9NHk~LHKF
ux_Mrh'
/* (non-Javadoc) ?**+e%$$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eln&]d;
*/ 7]9
a<
public void sort(int[] data) { ]<H&+ &!
MaxHeap h=new MaxHeap(); IqC]! H0
h.init(data); }D7I3]2>
for(int i=0;i h.remove(); b+@JY2dvj
System.arraycopy(h.queue,1,data,0,data.length); 0|$v-`P$
} CPP`
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private static class MaxHeap{ R(2tlZ
Cz72?[6
void init(int[] data){ !OBEM1~
1
this.queue=new int[data.length+1]; q0$
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for(int i=0;i queue[++size]=data; (>VX-Y/
fixUp(size); u#Z#)3P
} wW#}:59}
} )+}]+xRWGj
ROk5]b.
private int size=0; O) WCW<p
XLAN Np%E
private int[] queue; FP;Ccl"s
@r#v[I
public int get() { ;\lW5ZX
return queue[1]; et,f_fd7v
} 4zJtOK?r"
wtc!>
public void remove() { r9 ui|>U"
SortUtil.swap(queue,1,size--); 3E>frR\!I
fixDown(1); !R1.7}O
} !eEHmRgg4
file://fixdown |`lzfe
private void fixDown(int k) { 3=Cc.a/3
int j; oXxCXO,q
while ((j = k << 1) <= size) { &e;=cAXG
if (j < size %26amp;%26amp; queue[j] j++; F{eU";D
if (queue[k]>queue[j]) file://不用交换 }RHn)}+
break; LUC4=kk4
SortUtil.swap(queue,j,k); ^j".
k = j; o'W5|Gy
} QAvir%Y9Q
} ]@uE#a:[
private void fixUp(int k) { &jsVw)Ue
while (k > 1) { 7PANtCFb&
int j = k >> 1; 4g
:>[q
if (queue[j]>queue[k]) GlbySD@
break; dHK`eS$sb
SortUtil.swap(queue,j,k); wvbPnf^y
k = j; FI3)i>CnW
} 4$*%gL;f^
} zgs (Dt;
/%&2HDA)
} %n
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} n@U n
f}1&HI8r
SortUtil: (*oL+ef-C
l-ct?T_@
package org.rut.util.algorithm; &_"]5/"(
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import org.rut.util.algorithm.support.BubbleSort; Dh5X/y
import org.rut.util.algorithm.support.HeapSort; H63,bNS s
import org.rut.util.algorithm.support.ImprovedMergeSort; _T2=J+"-Kp
import org.rut.util.algorithm.support.ImprovedQuickSort; )('%R|$ /
import org.rut.util.algorithm.support.InsertSort; Gm(b/qDDe
import org.rut.util.algorithm.support.MergeSort; d4nH_?
import org.rut.util.algorithm.support.QuickSort; L
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import org.rut.util.algorithm.support.SelectionSort; GDD '[;
import org.rut.util.algorithm.support.ShellSort; );Z1a&K5k
9A,^c;
/** czm&~n6$
* @author treeroot <