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。 w(+L&IBC
插入排序:
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package org.rut.util.algorithm.support; :G9d,B7*
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import org.rut.util.algorithm.SortUtil; vfc5M6Vm)<
/** K-*ZS8
* @author treeroot #+"D?
* @since 2006-2-2 "\9beK:l
* @version 1.0 15|gG<-
*/ "3 2Ua3m:G
public class InsertSort implements SortUtil.Sort{ KTo}xLT
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/* (non-Javadoc) qS}{O0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1$}Tn
*/ :&$v.#
public void sort(int[] data) { I`@>v%0
int temp; H_Hr=_8}-
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); }|=Fnyj
} {Ho _U&<
} x` wUi*G
} qixnaiZ
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} ]B&jMj~y&
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冒泡排序: /NPx9cLW^
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package org.rut.util.algorithm.support; M!VW/vdywL
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import org.rut.util.algorithm.SortUtil; E'+z.~+
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/** _iqaKYT$
* @author treeroot -yIx:*KI
* @since 2006-2-2 n]l3
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* @version 1.0 7we='L&R
*/ / 8dRql-Ne
public class BubbleSort implements SortUtil.Sort{ M>BVnB_,-
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/* (non-Javadoc) V+})$m*>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LsMq&a-j2
*/ qw|B-lT{:
public void sort(int[] data) { n%vmo
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int temp; *&_(kq z'1
for(int i=0;i for(int j=data.length-1;j>i;j--){ |U~\;m@
if(data[j] SortUtil.swap(data,j,j-1); &u2m6 r>W
} GIkVU6Q}
} '|%\QWuZ
} ~-yq,x
} z^KBV^n
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} aNICSxDN
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选择排序: 70R_O&f-k
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package org.rut.util.algorithm.support; uXGAcUx(
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import org.rut.util.algorithm.SortUtil; a|dn3R>vX
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/** Ni;jMc
* @author treeroot /5>A 2y
* @since 2006-2-2 \3rgwbF
* @version 1.0 RbA.&=3
*/ 8X\":l:
public class SelectionSort implements SortUtil.Sort { (f"LD8MJ/
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/* JVx-4?
* (non-Javadoc) (3m^@2i
* 1q*=4O
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D|C!KF (
*/ +=kz".$
public void sort(int[] data) { 2-#&ktM%V
int temp; \gir
for (int i = 0; i < data.length; i++) { Jjx1`S*i
int lowIndex = i; Wjd_|Kui
for (int j = data.length - 1; j > i; j--) { {|q(4(f"Iu
if (data[j] < data[lowIndex]) { ,F|49i.K
lowIndex = j; %:-2P
} A22'qgKm@
} x)kp*^/
SortUtil.swap(data,i,lowIndex); YO.+06X
} sdQ"[`~2R
} *APTgXYR
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} DL '{
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Shell排序: vri<R8
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package org.rut.util.algorithm.support; )c0 Dofhg
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import org.rut.util.algorithm.SortUtil; :RX zqC
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/** 9iK%@k
* @author treeroot 5.U|CL
* @since 2006-2-2 2B=BRVtSs
* @version 1.0 QyEoWKu;
*/ n8) eC2A
public class ShellSort implements SortUtil.Sort{ +39p5O!
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/* (non-Javadoc) ZlL]AD@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F^wm&:%{`
*/ D'_w
*
public void sort(int[] data) { R6irL!akAd
for(int i=data.length/2;i>2;i/=2){ HAcC& s8
for(int j=0;j insertSort(data,j,i); _GL:4
} jQ P2[\
} mx0EEU*
insertSort(data,0,1); 8/CK(G
} Fau24-g
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/** lM%3 ?~?Q&
* @param data FlLk.+!t
* @param j t \,XG
* @param i ;c# jO:A5
*/ x?G"58
private void insertSort(int[] data, int start, int inc) { IKeO&]k
int temp; f2M}N
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); y?xFF9W@H
} Zx%6pZ(.
} -=4:qQEw
} f]kG%JEK
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} AKUmh
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快速排序: 3TnrPO1E
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package org.rut.util.algorithm.support; 5wm(gF_t
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import org.rut.util.algorithm.SortUtil; y-a3
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/** #J*hZ(Pq
* @author treeroot p) m0\
* @since 2006-2-2 a~Y`N73/c
* @version 1.0 <3[0A;W=1
*/ lemUUl(^
public class QuickSort implements SortUtil.Sort{ YyD0g9{
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/* (non-Javadoc)
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P^m&oH5]EG
*/ _G^Cc}X
public void sort(int[] data) { @A8@j%CK1
quickSort(data,0,data.length-1); j4]y(AA
} sk~inIj-
private void quickSort(int[] data,int i,int j){ 63pd W/\j
int pivotIndex=(i+j)/2; p2(Z(V7*
file://swap 7NQEn Al
SortUtil.swap(data,pivotIndex,j); a/lTQj]A
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int k=partition(data,i-1,j,data[j]); 7toDk$jJRg
SortUtil.swap(data,k,j); *L#\#nh7
if((k-i)>1) quickSort(data,i,k-1); mBg$eiGTB
if((j-k)>1) quickSort(data,k+1,j); yey]#M[y
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} Na$[nv8qh
/** 8QFg6#"O
* @param data C "g bol^
* @param i *w23(f
* @param j R
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* @return k[]2S8K2
*/ ix_&<?8
private int partition(int[] data, int l, int r,int pivot) { ~qezr\$2
do{ CjUYwAy$k
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Yp;?Zq9
SortUtil.swap(data,l,r); J42/S [Rt
} Apc!!*7
while(l SortUtil.swap(data,l,r); . MH;u3U
return l; 2 UPG8]
} \MB$ Cwc
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} 6l&,!fd
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改进后的快速排序: ?=V;5H.
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package org.rut.util.algorithm.support; DN;3VT.-
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import org.rut.util.algorithm.SortUtil; "g&hsp+i"A
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/** Oc%W_Gb7
* @author treeroot *apkw5B}C
* @since 2006-2-2 CK(`]-q>,
* @version 1.0 Jqz K5)
*/ P$*9Z@
public class ImprovedQuickSort implements SortUtil.Sort { WSOz^]
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private static int MAX_STACK_SIZE=4096; -qdt$jIM
private static int THRESHOLD=10; 28LYGrB
/* (non-Javadoc) 1SSS0 &
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j. mla
*/ p|Nh:4iN
public void sort(int[] data) { y=SVS3D
int[] stack=new int[MAX_STACK_SIZE]; J1@skj4#\~
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int top=-1; KLgg([
int pivot; yVgHu#?PM
int pivotIndex,l,r; (W+aeB0
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stack[++top]=0; EjP9/VG@=
stack[++top]=data.length-1; ZhY03>X
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while(top>0){ 5Tq*]ZE
int j=stack[top--]; I9*BTT]
int i=stack[top--]; 3_ko=& B$
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pivotIndex=(i+j)/2; 5+a5pC
pivot=data[pivotIndex]; >Xw0i\G
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SortUtil.swap(data,pivotIndex,j); hr3<vWAD
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file://partition CI^s~M >
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r=j; h}4yz96WD
do{ K>G.HN@
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); x.Tulo0/
SortUtil.swap(data,l,r); y'(a:.%I
} j%=X
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while(l SortUtil.swap(data,l,r); (h'Bz6K
SortUtil.swap(data,l,j); vL8Rg} Jh4
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if((l-i)>THRESHOLD){ F(|XJN
stack[++top]=i; H:cAORLB
stack[++top]=l-1; %a']TX
} c/E'GG%Q%
if((j-l)>THRESHOLD){ _RE;}1rb,
stack[++top]=l+1; vH/RP
stack[++top]=j; i@mS8%|l
} i(>
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} "v/Yw'!
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file://new InsertSort().sort(data); *U +<Hv`C
insertSort(data); jc HyRR1R
} lcK4 Uq\q
/** ;.=]Ar}
* @param data n0g8B
*/ 7MQh,J!"
private void insertSort(int[] data) { @D>qo=KPM
int temp; I>{o]^xw-D
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); U7HfDDh
} c2-oFLNP=
} Y=t?"E
} IZs&7
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} ik1asj1
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归并排序: jXPbj.
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package org.rut.util.algorithm.support; zI4d|P
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import org.rut.util.algorithm.SortUtil; #_WkV
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/** 3!{Tw6A8(
* @author treeroot `\GRY @cg
* @since 2006-2-2 \,'4eV
* @version 1.0 qiH)J-
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*/ J&&)%&h'I
public class MergeSort implements SortUtil.Sort{ }42Hhu7j
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/* (non-Javadoc) RAWzQE}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i|m8#*Hd
*/ \i+Ad@)
public void sort(int[] data) { *Qyu
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int[] temp=new int[data.length]; EvH/d4V;
mergeSort(data,temp,0,data.length-1); nw(R=C
} u U%Z%O
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private void mergeSort(int[] data,int[] temp,int l,int r){ W8F@nY
int mid=(l+r)/2; sR/y|
if(l==r) return ; $9P=
mergeSort(data,temp,l,mid); *W;;L_V"
mergeSort(data,temp,mid+1,r); &j,#5f(
for(int i=l;i<=r;i++){ cg_ " }]Y1
temp=data; ~'F.tB
} H3 -?cy
int i1=l; e=3C*+lq\
int i2=mid+1; 9WI5\`*"
for(int cur=l;cur<=r;cur++){ X ]W)D
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if(i1==mid+1) hV:++g
data[cur]=temp[i2++]; ;e.8EL
else if(i2>r) p=3t!3
data[cur]=temp[i1++]; HJBGxyw
else if(temp[i1] data[cur]=temp[i1++]; {Qc,Nl
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else xojt s;n
data[cur]=temp[i2++]; Mdq|:^px
} Kwi+}B!
} UA4c4~$S
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} aRElk&M
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改进后的归并排序: %!eRR
%|D)U>o{
package org.rut.util.algorithm.support; -}PE(c1%?q
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import org.rut.util.algorithm.SortUtil; vG7Mk8mIr
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/** :!hO9ho
* @author treeroot <B>hvuCoH
* @since 2006-2-2 p3Ozfk
* @version 1.0 -<9Qez)y
*/ +~
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public class ImprovedMergeSort implements SortUtil.Sort {
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private static final int THRESHOLD = 10; nCQ".G
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/* #-PMREgO
* (non-Javadoc) |?ZU8I^vW
* ycSGv4
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !#~KSO}zW2
*/ Uk*(C(
public void sort(int[] data) { v_Df+
int[] temp=new int[data.length]; Z=Cw7E
mergeSort(data,temp,0,data.length-1); w>8kBQ?b
} &-{%G=5~e%
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private void mergeSort(int[] data, int[] temp, int l, int r) { egBk7@Ko
int i, j, k; ,|A6l?iV
int mid = (l + r) / 2; ?@Q0;LG
if (l == r) <T;V9(66
return; *C0a,G4
if ((mid - l) >= THRESHOLD) ID`Ot{ y
mergeSort(data, temp, l, mid); lJN#_V0qW
else dNY'uv&Y
insertSort(data, l, mid - l + 1); Thu_`QP^
if ((r - mid) > THRESHOLD) ~5h4 Gy)
mergeSort(data, temp, mid + 1, r); =+ b>d\7xG
else S>r}3,]S
insertSort(data, mid + 1, r - mid); |&xaV-b9W
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for (i = l; i <= mid; i++) { 4`mf^Kf
temp = data; SjpCf8Z(
} *aC[Tv[-P
for (j = 1; j <= r - mid; j++) { [s`B0V`04
temp[r - j + 1] = data[j + mid]; QlV(D<
} bCr
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int a = temp[l]; \At~94
int b = temp[r]; .ahY 1CO
for (i = l, j = r, k = l; k <= r; k++) { $y,KDR7^
if (a < b) { QH4m7M@ni
data[k] = temp[i++]; #pgD-0_
a = temp; .P7q)lj36h
} else { p`rjWpH
data[k] = temp[j--]; U,7
b = temp[j]; jnbR}a=fJ
} >~Gy+-
} ;?@Rq"*
} 8(l0\R,%+z
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/** }No #_{
* @param data R.2i%cU
* @param l n0gjcDHQ
* @param i -?:8sv*X
*/ 1Az&BZU[
private void insertSort(int[] data, int start, int len) { qTRP2rH,L&
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); h.]^ o*DJ
} SmD#hE[
} \)wVO*9*0
} v;5-1
} jtpHDS
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堆排序: )m3emMO2
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package org.rut.util.algorithm.support; <*z'sUh+}
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import org.rut.util.algorithm.SortUtil; wBg?-ji3<
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/** Rf8ZH
* @author treeroot IKnf
* @since 2006-2-2 CQ<