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。 p4=^
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插入排序: o}BaZ|iZ2
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package org.rut.util.algorithm.support; 1:?WvDN=
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import org.rut.util.algorithm.SortUtil; wml`3$"cf
/** >Gkkr{s9
* @author treeroot :EZTJu
* @since 2006-2-2 'j|;M
* @version 1.0 /J^yOR9
*/ =73wngw
public class InsertSort implements SortUtil.Sort{ Hly$ Wm
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/* (non-Javadoc) krgsmDi7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b1-JnEc
*/ f -bVcWI
public void sort(int[] data) { ?g1%-F+
int temp; *g7dB2{
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); *+5AN306
} RDZl@ps8
} EI'(
} ds`a6>746
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} ;sDFTKf
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冒泡排序: [E+#+-n7
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package org.rut.util.algorithm.support; |dXmg13( -
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import org.rut.util.algorithm.SortUtil; !$P&`n]@
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/** ~nw]q<7r
* @author treeroot ,u/GA<'#M
* @since 2006-2-2 VB\oK\F5z
* @version 1.0 C,.$g>)MZK
*/ [/xw5rO%
public class BubbleSort implements SortUtil.Sort{ Ga"t4[=I
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/* (non-Javadoc) 52=?!
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #7GbG\
*/ jU/0a=h9
public void sort(int[] data) { %R(1^lFI$
int temp; 4$C:r&K
for(int i=0;i for(int j=data.length-1;j>i;j--){ WOiw 0
if(data[j] SortUtil.swap(data,j,j-1); pPUKx=d
} Mz_*`lRN
} 1d,;e:=j
} x
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} 8V?O=3<a
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} ]25 x X
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选择排序: >8\EdN59{
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package org.rut.util.algorithm.support; &N.D!7X
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import org.rut.util.algorithm.SortUtil; bd_&=VLTC
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/** LR|L P)I
* @author treeroot v47Y7s:uQ
* @since 2006-2-2 0rP`BK|
* @version 1.0 wGr5V!
*/ O0[.*xG
public class SelectionSort implements SortUtil.Sort { :+: vBrJm
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/* ~H`~&?
* (non-Javadoc) w,f1F;!q1
* ?VaWOwWI
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XpFW(v
*/ /Sy:/BQ
public void sort(int[] data) {
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int temp; 8&+m5xS
for (int i = 0; i < data.length; i++) { ]n _OQ)VO
int lowIndex = i; 8$4@U;Vh;
for (int j = data.length - 1; j > i; j--) { :!Ea.v
if (data[j] < data[lowIndex]) { <_(UAv
lowIndex = j; w eu3c`-a
} \-i5b
} >..C^8 "
SortUtil.swap(data,i,lowIndex); `_M*2(rt
} Qv4g#jX{
} AT$eTZ]M
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} OcWy#,uC
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Shell排序: _ljdo`j#N
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package org.rut.util.algorithm.support; AXBf\)[
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import org.rut.util.algorithm.SortUtil; o$disJ
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/** Vm+e%
* @author treeroot %z9eVkPI~
* @since 2006-2-2 V)Oj6nD]
* @version 1.0 E6
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*/ m 3k}iIU7
public class ShellSort implements SortUtil.Sort{ x|3f$
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/* (non-Javadoc) p:g`K#[F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e;_ cC7
*/ [
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public void sort(int[] data) { BC}+yS
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for(int i=data.length/2;i>2;i/=2){ B-EVo&.
for(int j=0;j insertSort(data,j,i); ciQG.]
} pyvZ[R9
} vbXZ Z
insertSort(data,0,1); ~D[5AXV`^
} srX" vF
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/** '8 O(J7J
* @param data UBN^dbP*
* @param j iP nu *29
* @param i F%<hng%k
*/ 9t `
private void insertSort(int[] data, int start, int inc) { e~Hx+Qp.G
int temp; 7F=Xn@ _
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); \Pv_5LAo
} 67916
} g(9\r
} 4s{_(gy
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} ~}B6E)
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快速排序: )@%wj;>a
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package org.rut.util.algorithm.support; WGxe3(d
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import org.rut.util.algorithm.SortUtil; {|{}]B
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/** CTqAhL 4}
* @author treeroot !>%U8A
* @since 2006-2-2 m~upTQz
* @version 1.0 ?zypF 5a
*/ Y6_%HYI$
public class QuickSort implements SortUtil.Sort{ ,d^ze =
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/* (non-Javadoc) 1-HL#y*7$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $}{u6*u.,
*/ >lD*:#o
public void sort(int[] data) { i0,'b61qE
quickSort(data,0,data.length-1); Nk~Xz
} 3 #fOrNU2
private void quickSort(int[] data,int i,int j){ 81O\BO.T
int pivotIndex=(i+j)/2; \,U#^Vr
file://swap @y{i.G
SortUtil.swap(data,pivotIndex,j); q T16th[D
;(]O*{F7k
int k=partition(data,i-1,j,data[j]); M"q]jeaM
SortUtil.swap(data,k,j); zjyj,jP
if((k-i)>1) quickSort(data,i,k-1); 6]GEn=t
if((j-k)>1) quickSort(data,k+1,j); @uIY+_E40g
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} #g ;][
/** 0SoU\/kUi
* @param data b zz{ p1e
* @param i F vJJpPS
* @param j .zm'E<
* @return a$Lry?pb
*/ |sM#nhxK
private int partition(int[] data, int l, int r,int pivot) { .EOHkhn
do{ D.e4S6\&
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); o6@Hj+,,
SortUtil.swap(data,l,r); os\"(*dix
} 9J"Y
while(l SortUtil.swap(data,l,r); d+9T}? T:*
return l; 1wx&/#a
} }]-SAM
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} i(eLE"G+
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改进后的快速排序: N9W\>hKaeh
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package org.rut.util.algorithm.support; =c)O8
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import org.rut.util.algorithm.SortUtil; PI"&-lXI-m
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/** *{5L*\AZ
* @author treeroot >E;&SX
* @since 2006-2-2 #8N9@
* @version 1.0 0:W*_w0Ge
*/ uUAib<wdPL
public class ImprovedQuickSort implements SortUtil.Sort { 3I)!.N[m
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private static int MAX_STACK_SIZE=4096; L{>XT
private static int THRESHOLD=10; )^&,[Q=i
/* (non-Javadoc) ` r; .
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u8Ul +u
*/ &} b'cO
public void sort(int[] data) { dAOmqu,6
int[] stack=new int[MAX_STACK_SIZE]; :K!@zT=o
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int top=-1; O,Xf.O1c
int pivot; w%,Iy,G@
int pivotIndex,l,r; DzLm~
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stack[++top]=0; ~%Y*2i
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stack[++top]=data.length-1; YW@Ad
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while(top>0){ 0 T!_;IQ
int j=stack[top--]; A[lkGQtS4
int i=stack[top--]; cad%:%p
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pivotIndex=(i+j)/2; <Bc J;X/
pivot=data[pivotIndex]; GgH=w`;_
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SortUtil.swap(data,pivotIndex,j); Rv=(D^F,
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file://partition RdlcJxM
l=i-1; M%f96XUM
r=j; _20nOg`o
do{ mDmy637_
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 4#mRLs'
SortUtil.swap(data,l,r); -#v1b>ScY
} 7O{c>@\
while(l SortUtil.swap(data,l,r); EfY|S3Av
SortUtil.swap(data,l,j); uX@RdkC
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if((l-i)>THRESHOLD){ T78`~-D4<
stack[++top]=i; ^9eJ)12pK
stack[++top]=l-1; vukI`(#
} [3++Q-rR=
if((j-l)>THRESHOLD){ B 8z3W9
stack[++top]=l+1; ;4of7d
stack[++top]=j; E1:{5F5/
} #_{3W-35*
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} I.I:2Ew+
file://new InsertSort().sort(data); xZt] s3?
insertSort(data); Ji SJi?
} I9Af\ k|^
/** gq`gitu0
* @param data -~eNC^t;W
*/ A?8f 6
private void insertSort(int[] data) { $trvNbco
int temp; [Y.3miE
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); k}y1IW+3
} ]V J$;v'{[
} fkWuSGi
} 7{j9vl6
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} Qjh5m5e
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归并排序: ~p<o":k+Lv
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package org.rut.util.algorithm.support; GQ
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import org.rut.util.algorithm.SortUtil; l'T3RC,\
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/**
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* @author treeroot HcwqVU
* @since 2006-2-2 xJrRJwL
* @version 1.0 x|n2,3%
*/ eAS~>|N#x
public class MergeSort implements SortUtil.Sort{ {tMpI\>S
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/* (non-Javadoc) SU9qF73Y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H2`aw3
*/ Ss+e*e5Ht
public void sort(int[] data) { fgYdKv8
int[] temp=new int[data.length]; `sOCJ|rc5
mergeSort(data,temp,0,data.length-1); VnW]-P*:
} tKgPKWP
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private void mergeSort(int[] data,int[] temp,int l,int r){ 0TK+R43_
int mid=(l+r)/2; 8?!=/Sc
if(l==r) return ; 1?sR1du,
mergeSort(data,temp,l,mid); )?RR1P-ID
mergeSort(data,temp,mid+1,r); #jn6DL@[{
for(int i=l;i<=r;i++){ E$] 7w4,n
temp=data; _svY.ps*
} F-g(Hk|v
int i1=l;
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int i2=mid+1; }6b =2Z}
for(int cur=l;cur<=r;cur++){ @1ZLr
if(i1==mid+1) C5m6{Oo+-
data[cur]=temp[i2++]; +[M5x[[$
else if(i2>r) zk= 3L} C
data[cur]=temp[i1++]; VXlTA>a }
else if(temp[i1] data[cur]=temp[i1++]; 4HEp}Y"}V
else $ KQ7S>T
data[cur]=temp[i2++]; #?L%M
} o\u31,
} -I4-K%%B`
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改进后的归并排序: f@Mm{3&.
!~PLW] Z4
package org.rut.util.algorithm.support; 10xo<@l
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import org.rut.util.algorithm.SortUtil; uSp=,2)
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/** }2 zJ8A9-
* @author treeroot .OA_)J7
* @since 2006-2-2 (wLzkV/6
* @version 1.0 rSDS9Vf(
*/ Rr+Y::E
public class ImprovedMergeSort implements SortUtil.Sort { o
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private static final int THRESHOLD = 10; O{hGh{y
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/* "Wd?U[[
* (non-Javadoc) \:ntqj&A|
* +V*FFv
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :9!?${4R
*/ -~T? xs0_
public void sort(int[] data) { `vWFTv
int[] temp=new int[data.length]; Rg~ ~[6G>
mergeSort(data,temp,0,data.length-1); J2H/z5YRJ4
} DPR=Xls
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private void mergeSort(int[] data, int[] temp, int l, int r) { 7Wub@Mp
int i, j, k; v
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int mid = (l + r) / 2; ,W"Q)cL
if (l == r) ]5b%r;_
return; /N(L52mz
if ((mid - l) >= THRESHOLD) DP`$gd
mergeSort(data, temp, l, mid); 9Cbf[\J!bq
else = BW>jD
insertSort(data, l, mid - l + 1); mf]1mG})
if ((r - mid) > THRESHOLD) y1P KoN|K
mergeSort(data, temp, mid + 1, r); c%Ht;
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else }WXO[ +l
insertSort(data, mid + 1, r - mid); qXmkeidb&W
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for (i = l; i <= mid; i++) { `ro~l_U;A
temp = data; m/l#hp+
} VE{[52
for (j = 1; j <= r - mid; j++) { 2OFrv=F
temp[r - j + 1] = data[j + mid]; g2p/#\D\J
} Dlhb'*@
int a = temp[l]; ~*R"WiDtI
int b = temp[r]; =w='qjh
for (i = l, j = r, k = l; k <= r; k++) { _/0vmgQ&
if (a < b) { I\J^@&JE
data[k] = temp[i++]; 9')
a = temp; y\7 -!
} else { dbF?#s~u
data[k] = temp[j--]; 3>%oGbo
b = temp[j]; )Cl!, m)~
} h ,;f6
} CC,_I>t
} |f+|OZY
0 =#)-n
/** wRu+:<o^.
* @param data & yFS
* @param l .: ~);9kj
* @param i $oKT-G
*/ w_o|k&~,
private void insertSort(int[] data, int start, int len) { O!#yPSq?
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 8z\v|-%Z
} Hbz >D5$
} =@w,D.5h
} !qe,&