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。 h8:5[;e
插入排序: sEcg;LFp
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package org.rut.util.algorithm.support; xkfW^r
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import org.rut.util.algorithm.SortUtil; ilkN3J
/** ^) 5*?8#
* @author treeroot dd!Q[]$ }
* @since 2006-2-2 C$^WW}S
* @version 1.0 AO]1`b:
*/ KWH:tFL.
public class InsertSort implements SortUtil.Sort{ 8P*wt'Q$
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/* (non-Javadoc) `tJ"wpCf6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Wrs6t
*/ ;I]$N]8YI
public void sort(int[] data) { o*:D/"gb
int temp; b$=c(@]
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); }cERCS\t
} *&$2us0%%
} b2UqN]{
} JjnWv7W3$
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} gi<%: [jT
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冒泡排序: WU{9lL=
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package org.rut.util.algorithm.support; pU[5f5_
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import org.rut.util.algorithm.SortUtil; l'kVi
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/** T!QAcO
* @author treeroot {i/7Nx
* @since 2006-2-2 tJ Mm
* @version 1.0 }W5~89"
*/ :p.f zL6X
public class BubbleSort implements SortUtil.Sort{ .pPtBqp
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/* (non-Javadoc) (\CH;c-@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jF|LPWl
*/ $im6v
public void sort(int[] data) { 0hCUr]cZ,
int temp; /H :Bu
for(int i=0;i for(int j=data.length-1;j>i;j--){ H<ZXe!q(nx
if(data[j] SortUtil.swap(data,j,j-1); RW^e#z>m"E
} |snWO0iF
} c<imqDf
} z?.XVk-
} -e_B
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} V( 3rTDg
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选择排序: & hv@ &
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package org.rut.util.algorithm.support; ##/ l
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import org.rut.util.algorithm.SortUtil; x)-n[Fu
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/** i?|b:lcV
* @author treeroot ad`=A V ]
* @since 2006-2-2 LqoH]AcN
* @version 1.0 F7U$7(I2G
*/ HC(o;,spO
public class SelectionSort implements SortUtil.Sort { ?<D1]Xv
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/* JeU1r-i
* (non-Javadoc) apv"s+
* E
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PAs.T4Av^
*/ R6qC0@*
public void sort(int[] data) { BaOPtBYA:
int temp; AqjEz+TVt
for (int i = 0; i < data.length; i++) { s
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int lowIndex = i; ANXN.V
for (int j = data.length - 1; j > i; j--) {
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if (data[j] < data[lowIndex]) { vKTCS
lowIndex = j; d?>pcT)G_
} .
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} qaEWK0
SortUtil.swap(data,i,lowIndex); )/uCdSDIc
} {z7kW@c
} a'B 5m]%
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} ?oQAxb&
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Shell排序: 7hfa?Mcz
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package org.rut.util.algorithm.support; bVYsPS
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import org.rut.util.algorithm.SortUtil; x}H%NzR
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/** <x\I*%(
* @author treeroot P*9L3R*=N
* @since 2006-2-2 #4ii!ev
* @version 1.0 QS2~}{v
*/ #5mnSky+s
public class ShellSort implements SortUtil.Sort{ @po|07
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/* (non-Javadoc) 9Q:}VpT~nG
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8M7pc{
*/ sr`)l& t?
public void sort(int[] data) { U$T
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for(int i=data.length/2;i>2;i/=2){ BH^8!7dkT
for(int j=0;j insertSort(data,j,i); e7JZk6GP#9
} {iq)[)n
} o Np4> 7Lk
insertSort(data,0,1); a~O](/+p;
} E]%&)3O[
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/** 02~GT_)$^
* @param data 99&PY[f:{
* @param j MI*@^{G
* @param i LKI2R_|n
*/ M;1B}x@
private void insertSort(int[] data, int start, int inc) { Ub<^;Du5
int temp; ;Ak 6*Sr
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ~VaO,8&+L
} J7s\
} C_
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} N1jJ(}{3
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} Xsv^GmP+
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快速排序: t7b\ #o
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package org.rut.util.algorithm.support; XyytO;XM-
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import org.rut.util.algorithm.SortUtil; 1J O@G3,
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/** !UW{xHu
* @author treeroot 6yPh0n
* @since 2006-2-2 !nyUAZ9 :
* @version 1.0 IL N0/eH
*/ p/.[cH
public class QuickSort implements SortUtil.Sort{ AcxC$uh
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/* (non-Javadoc) O7GJg;>?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Hp?uYih0
*/ 8i'EO6
public void sort(int[] data) { DJ<F8-sb2r
quickSort(data,0,data.length-1); 0FEn& \2<
} L$<(HQQJ8
private void quickSort(int[] data,int i,int j){ Fg-4u&Ik
int pivotIndex=(i+j)/2; a]8}zSUK
file://swap {1]/ok2k5
SortUtil.swap(data,pivotIndex,j); T^n0 =|
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int k=partition(data,i-1,j,data[j]); x\2N
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SortUtil.swap(data,k,j); Hy0l"CA*|
if((k-i)>1) quickSort(data,i,k-1); V(
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if((j-k)>1) quickSort(data,k+1,j); R7-+@
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} tA6x
/** @$%[D`Wa<
* @param data Zi~-m]9U
* @param i o" ./
* @param j /6a617?9J
* @return SYmiDR
*/ k>dzeH
private int partition(int[] data, int l, int r,int pivot) { )A H)*Mg
do{ 2%zJI"Ic
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 2v9T&xo=
SortUtil.swap(data,l,r); cpg+-Zf%
} +^v]d_~w_
while(l SortUtil.swap(data,l,r); H@!kgaNF
return l; v^QUYsar
} b^I(>l-
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} RFqf$
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改进后的快速排序: #Mmr{4m
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package org.rut.util.algorithm.support; -McDNM
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import org.rut.util.algorithm.SortUtil; v a
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/** Q]oCzSi
* @author treeroot e#jkp'
* @since 2006-2-2 FfR%@
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* @version 1.0 '}eA2Q>BV
*/ S((\KL,
public class ImprovedQuickSort implements SortUtil.Sort { U>jLh57
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private static int MAX_STACK_SIZE=4096; S&`iEwG
private static int THRESHOLD=10; "T,^>xD
/* (non-Javadoc) M~k2Y$}R
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4ZN&Yf`
*/ js<}>wD7<
public void sort(int[] data) { Msea kF
int[] stack=new int[MAX_STACK_SIZE]; G'qGsKf\
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int top=-1; V]I+>Zn| 7
int pivot; ??tNMr5{[
int pivotIndex,l,r; K$(LiP
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stack[++top]=0; L-v-KO6
stack[++top]=data.length-1; c (Gl3^
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while(top>0){ o#ajBOJ
int j=stack[top--]; `tb@x ^
int i=stack[top--]; KJ&~z? X
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pivotIndex=(i+j)/2; cw)'vAE
pivot=data[pivotIndex]; ubvXpK:.
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SortUtil.swap(data,pivotIndex,j); y~AF|Dk=
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file://partition wX!>&Gc.
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r=j; A(<"oAe|
do{ AJ`R2
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while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); |?KdQeL
SortUtil.swap(data,l,r); h-`*S&mZ
} |N/Wu9w$
while(l SortUtil.swap(data,l,r); hd E? %A
SortUtil.swap(data,l,j); g Q@fe3[
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if((l-i)>THRESHOLD){ o/Cu^[an
stack[++top]=i; -WX{y Ci
stack[++top]=l-1; NDv_@V(D
} )Ap0" ?q
if((j-l)>THRESHOLD){ sF=8E8qa
stack[++top]=l+1; D+:} D*_&
stack[++top]=j;
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} %ymM#5A
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} IhYTK%^96
file://new InsertSort().sort(data); oA1d8*i^E
insertSort(data); 6%&RDrn
} U;Ne"Jh
/** 7<ZCeM2x
* @param data ;0!rq^JG
*/ Z$'483<
private void insertSort(int[] data) { OVE5:)$x
int temp; :O(<3"P/
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); gU^2;C
} u(`,7 o "
} O)4P)KAO<
} kj4t![o+
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} 4Nx]*\\
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归并排序: iA[WDB\|0
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package org.rut.util.algorithm.support; o/U"'FP
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import org.rut.util.algorithm.SortUtil; ^8#;>+7R
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/** mq(*4KFWJ2
* @author treeroot HYkZMVH{
* @since 2006-2-2 pzPm(M1^X
* @version 1.0 l"-F<^
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*/ lVmm`q6n9
public class MergeSort implements SortUtil.Sort{ ]_ON\v1
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/* (non-Javadoc) zU7/P|Dw+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b2Jgg&?G
*/ 32N*E,
public void sort(int[] data) { J:q:g*Wi
int[] temp=new int[data.length]; *A,h^
mergeSort(data,temp,0,data.length-1); uk(|c-_]~c
} B[I
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private void mergeSort(int[] data,int[] temp,int l,int r){ h 'F\9t
int mid=(l+r)/2; 5l&9BS&
if(l==r) return ; 4X5Tyv(Dp
mergeSort(data,temp,l,mid); EZ.|6oug\
mergeSort(data,temp,mid+1,r); y_=},a
for(int i=l;i<=r;i++){ 6tBh`nYB=
temp=data; ^?5[M^
} u{-J?t&`
int i1=l; YlY3C
int i2=mid+1; kh'R/Dt
for(int cur=l;cur<=r;cur++){ ua^gG3n0
if(i1==mid+1) .>{.!a
data[cur]=temp[i2++]; #z*-
else if(i2>r) Z\`i~
data[cur]=temp[i1++]; ;U^7]JO;
else if(temp[i1] data[cur]=temp[i1++]; abVz/R/o
else Y`x54_32
data[cur]=temp[i2++]; f[bx|6
} j/FFxlFNL
} cS'|c06
Yzr|Z7rq}
} KH<f=?b
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改进后的归并排序: >c~Fgs
lAM"l)Ij
package org.rut.util.algorithm.support; YMSA[hm
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import org.rut.util.algorithm.SortUtil; U# jbii6e
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/** 42Gv]X
* @author treeroot "t{|e6
* @since 2006-2-2 fgg;WXcT ~
* @version 1.0 /puM3ZN
*/ lP!`lhc-^
public class ImprovedMergeSort implements SortUtil.Sort { /kAu&}
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private static final int THRESHOLD = 10; pV3o\bk!
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/* jM E==)Y
* (non-Javadoc) 1i.t^PY
* <R6$ kom`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Rw54`_kFEB
*/ <oE(I)r4,
public void sort(int[] data) { UY_'F5X
int[] temp=new int[data.length]; 4;*o}E
mergeSort(data,temp,0,data.length-1); {hr+ENgV
} Wa8?o~0"L
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private void mergeSort(int[] data, int[] temp, int l, int r) { ?W %9H\;
int i, j, k; %U.aRSf/
int mid = (l + r) / 2;
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if (l == r) "v"w ER?
return; -L&FguoVB
if ((mid - l) >= THRESHOLD) U-P\F-
mergeSort(data, temp, l, mid); P(1bd"Q
else pMB~Lt9
insertSort(data, l, mid - l + 1); 5df~] -=0Y
if ((r - mid) > THRESHOLD) llf|d'5Nl
mergeSort(data, temp, mid + 1, r); w2!5Cb2
else 03iD(,@
insertSort(data, mid + 1, r - mid); .{-&3++WZ
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for (i = l; i <= mid; i++) { ;OlC^\e
temp = data; kp~@Ub
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} 5z8!Nmb/
for (j = 1; j <= r - mid; j++) { BPoY32d"_
temp[r - j + 1] = data[j + mid]; m)A~1+M$)L
} s
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int a = temp[l]; ?#8s=t
int b = temp[r]; (f^K\7HM
for (i = l, j = r, k = l; k <= r; k++) { n$* 'J9W~
if (a < b) { VQr)VU=jb
data[k] = temp[i++]; M>CW(X
a = temp; ddDl~&}o
} else { S$!)Uc\)A
data[k] = temp[j--]; ;NrN#<j(!
b = temp[j]; 8+Y+\XZG
} .[v4'ww^
} ,8KD-" l^g
} 0L
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/** p/|":(U
* @param data Z|YiYQl[)
* @param l A9_)}
* @param i 3Z* '
*/ NR8YVO)5$
private void insertSort(int[] data, int start, int len) { TSQ/{=r
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); `TM[7'
} :nuMakZZ
} Yg5m=Lis
} wG1A]OJl1
} kI>Iq
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堆排序: -saisH6
sv<U$M~)X
package org.rut.util.algorithm.support; yq{k:)
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import org.rut.util.algorithm.SortUtil; w l.#{@J]<
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/** (fc
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* @author treeroot r-#23iT.~
* @since 2006-2-2 f)xHSF"
* @version 1.0 gDP\u<2!
*/ <$WRc\}&g