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。 yp?a7t M
插入排序: G7NRpr
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package org.rut.util.algorithm.support; A+41JMH
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import org.rut.util.algorithm.SortUtil; d}^G790
/** AMre(lgh
* @author treeroot L0X/
* @since 2006-2-2 %4,v2K
* @version 1.0 TGH"OXV*@
*/ )%wNVW 0C
public class InsertSort implements SortUtil.Sort{ 2+=:pc^
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/* (non-Javadoc) .K`EflN
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;ZoEqMv
*/ wfQ^3HL
public void sort(int[] data) { b Od<x
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int temp; FH)_L1n
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); &w%--!T
} 5>\~jf
} ~UNK[
} 1n!xsesSc
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} Fk#$@^c@
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冒泡排序: >/.w80<'
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package org.rut.util.algorithm.support; 0s!';g Q
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import org.rut.util.algorithm.SortUtil; p6X-P%s
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/** l05'/duuJ
* @author treeroot kp3%"i&hD
* @since 2006-2-2 'h87A-\!F
* @version 1.0 ^m['VK#?
*/ ''Hx&
public class BubbleSort implements SortUtil.Sort{ B'&QLO|
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/* (non-Javadoc) H>]A|-rG#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b?K`DUju{0
*/ Ctx`b[&KXX
public void sort(int[] data) { 5@_kGoqd
int temp; IXv9mr?H}
for(int i=0;i for(int j=data.length-1;j>i;j--){ A)_HSIVi
if(data[j] SortUtil.swap(data,j,j-1); i]15g@
} _=_<cgy1u
} txik{' :
} *f o>
} 7 T
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} n7/>+V+
} 89-U
选择排序: bm poptfL
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package org.rut.util.algorithm.support; &embAqW:
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import org.rut.util.algorithm.SortUtil; eX'U d%
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/** C`=YGyj=TL
* @author treeroot 2(U;{;\n*
* @since 2006-2-2 ^*"i
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* @version 1.0 >%H(0G#X
*/ g#:P cl
public class SelectionSort implements SortUtil.Sort { [\e/xY(4
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/* l[<U UEjZJ
* (non-Javadoc) H/y,}z
* $wC'qV
*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FfNUFx2N
*/ _tRRIW"Vx"
public void sort(int[] data) { nJ}@9v F/
int temp; &B\ sG=
for (int i = 0; i < data.length; i++) { 0X:$ASocU
int lowIndex = i; a"&cm'\lL
for (int j = data.length - 1; j > i; j--) { .(99f#2M:
if (data[j] < data[lowIndex]) { Wv||9[Rd
lowIndex = j; &2bqL!k
} r+k g$+%b
} [\qclW;L
SortUtil.swap(data,i,lowIndex); mKsJ[)#.
} ^yX >^1
} S ,x';"
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} Ab6R ?mUM
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Shell排序: bXSAZWf
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package org.rut.util.algorithm.support; Mc&Fj1h5
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import org.rut.util.algorithm.SortUtil; ey6ujV7!
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/** ~jzjJ&O&
* @author treeroot OT0IGsJ"'
* @since 2006-2-2 4]#$YehM5
* @version 1.0 7,zE?KG /
*/ t.#ara{
public class ShellSort implements SortUtil.Sort{ '<s54 Cb
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/* (non-Javadoc) {isL<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2u$rloc$b
*/ _F5*\tQ
public void sort(int[] data) { f]_'icP
for(int i=data.length/2;i>2;i/=2){ 0xY</S
for(int j=0;j insertSort(data,j,i); fejC,H4I
} 9Dbbk/j|
} JT&RaFX
insertSort(data,0,1); _+X-D9j(l
} 1m5*MY
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/** s(KSN/
* @param data bz}-[W+
* @param j .TCDv4?
* @param i pD('6C;
*/ 5M/~|"xk
private void insertSort(int[] data, int start, int inc) { >g m
int temp; !ewT#afyu(
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); t3h ){jZ
} T.jCF~%7F
} }|%1LL^pB
} 6bPl(.(3
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} jtUqrJFlQ
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快速排序: {PR "}x
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package org.rut.util.algorithm.support; zez|l
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import org.rut.util.algorithm.SortUtil; MT7B'hd
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/** D*j^f7ab
* @author treeroot #IJeq0TVB
* @since 2006-2-2 RD46@Q`
* @version 1.0 {xH?b0>
*/ (k8}9[3G
public class QuickSort implements SortUtil.Sort{ +H28 F_#
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/* (non-Javadoc) wSw> UU
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6']HmM
*/ j8nkNE]&
public void sort(int[] data) { Lx tgf2r
quickSort(data,0,data.length-1); 0zE@?.
} k(M:#oA!
private void quickSort(int[] data,int i,int j){ [Ky3WppR
int pivotIndex=(i+j)/2; x
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file://swap bAbR0)
SortUtil.swap(data,pivotIndex,j); ,ryL("G
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int k=partition(data,i-1,j,data[j]); a HVzBcCPh
SortUtil.swap(data,k,j); :.r_4$F:
if((k-i)>1) quickSort(data,i,k-1); I~:gi@OVV
if((j-k)>1) quickSort(data,k+1,j); Ij$C@hH
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} yYaoA/0
/** ""Da2Md
* @param data ;1s+1G}_z
* @param i z:@:B:E
* @param j X^Z!!KTH
* @return ![sXR
*/ loO"[8i.k
private int partition(int[] data, int l, int r,int pivot) { L SP p
do{ 1`YU9?
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Z %Ozzp/
SortUtil.swap(data,l,r); |q58XwU `
} </WeB3#6
while(l SortUtil.swap(data,l,r); xDGS`o_w_
return l; Fs].Fa
} 6pSi-FH
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} b>Y{,`E3
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改进后的快速排序: NcP/W>lN
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package org.rut.util.algorithm.support; '3Lu_]I-
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import org.rut.util.algorithm.SortUtil; ICvV}%d
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/** =E5bM_P<K
* @author treeroot __2<v?\
* @since 2006-2-2 P RWb6
* @version 1.0 Qr9;CVW
*/ y TD4![
public class ImprovedQuickSort implements SortUtil.Sort {
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private static int MAX_STACK_SIZE=4096; xC,x_:R`
private static int THRESHOLD=10; xEp?|Q$
/* (non-Javadoc) Vv45w#w;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !t^DN\\#
*/ e=WjFnK[x7
public void sort(int[] data) { FO5a<6
int[] stack=new int[MAX_STACK_SIZE]; aL( hWE
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int top=-1; #3QPcoxa
int pivot; u0c}[BAF
int pivotIndex,l,r; iN[x
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stack[++top]=0; 68Gywk3]=u
stack[++top]=data.length-1; _ i}W1i
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while(top>0){ d51'[?(
int j=stack[top--]; EU %,tp
int i=stack[top--]; 1|(Q|
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pivotIndex=(i+j)/2; 3o%vV*
pivot=data[pivotIndex]; <;6{R#Tuh
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SortUtil.swap(data,pivotIndex,j); "FWx;65CR
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file://partition p 1'l D
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r=j; mK[Z#obc=
do{ RZzHlZ
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); n7cy[%yT
SortUtil.swap(data,l,r); bI55G#1G
} h6Z:+
while(l SortUtil.swap(data,l,r); @"-\e|[N
SortUtil.swap(data,l,j); \</!kY*3@t
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if((l-i)>THRESHOLD){ [b:&y(
stack[++top]=i; gvA}s/
stack[++top]=l-1; Dz(\ ?
} S^eem_C
if((j-l)>THRESHOLD){ 5e/YEDP
stack[++top]=l+1; x,!Dd
stack[++top]=j; .9rYBy
} sD:o
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} Lwr's'ao.
file://new InsertSort().sort(data); U`%t&7)
insertSort(data); LE\=Y;%
} ->8Kd1^F
/** "XR=P>
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* @param data wlT8|
*/ STp9Gh-
private void insertSort(int[] data) { RpQeQM=
int temp; vR!+ 8sy$
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); QQM:[1;RT
} m&:&z7^p
} zj1~[$
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} mG jB{Q+
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} :V(LBH0
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归并排序: ~5f&<,p!
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package org.rut.util.algorithm.support; QB*,+u4
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import org.rut.util.algorithm.SortUtil; %
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/** ABN4kM>%
* @author treeroot >A$L&8'C
* @since 2006-2-2 566!T_
* @version 1.0 _MBhwNBxZ
*/ y9r4]45
public class MergeSort implements SortUtil.Sort{ >}+{;d
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/* (non-Javadoc) #ibwD:{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f#0HiE!
*/ ]n!V
public void sort(int[] data) { #\0m(v
int[] temp=new int[data.length]; T/_u;My;
mergeSort(data,temp,0,data.length-1); Ti%MOYNCv
} D&G6^ME
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private void mergeSort(int[] data,int[] temp,int l,int r){ rH3U;K!
int mid=(l+r)/2; P`biHs8O
if(l==r) return ; *;fTiL
mergeSort(data,temp,l,mid); IT| h;NUG
mergeSort(data,temp,mid+1,r); L4>14D\
for(int i=l;i<=r;i++){ 9>)b6)J D
temp=data; ?zW'Hi
} A2|Bbqd
int i1=l; g:o/^_
int i2=mid+1; uNN/o}Qx
for(int cur=l;cur<=r;cur++){ ~}.C*;J
if(i1==mid+1) x?Abk
data[cur]=temp[i2++]; }r:"X<`
else if(i2>r) |_;kQ(,
data[cur]=temp[i1++]; +
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else if(temp[i1] data[cur]=temp[i1++]; e~]P _53
else sL$sj|" S
data[cur]=temp[i2++]; p&(0e,`z/
} 74Jx \(d
} \ND]x]5d
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} 6] x6FeuS
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改进后的归并排序: C4mkt2Eb0a
yu;EL>G_AY
package org.rut.util.algorithm.support; 3:,%>#"
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import org.rut.util.algorithm.SortUtil; X-\$<DiJGv
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/** QVT0.GzR
* @author treeroot G\sx'#Whc
* @since 2006-2-2 w
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* @version 1.0 +(+lbCW/
*/ xV>
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public class ImprovedMergeSort implements SortUtil.Sort { ht-'O"d:
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private static final int THRESHOLD = 10; 5U2%X
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/* 1)z'-dQ-5$
* (non-Javadoc) f(Xin3#'
* +~5Lo'^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o?a2wY^_
*/ L4 po1
public void sort(int[] data) { 0~nX7
int[] temp=new int[data.length]; Ua}R3^_)a
mergeSort(data,temp,0,data.length-1); {!I`EN]
} OxJHhF
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private void mergeSort(int[] data, int[] temp, int l, int r) { [G_ ;78
int i, j, k; !X}+JeU'
int mid = (l + r) / 2; < se ~wR
if (l == r) ]3v)3Wp
return; qz`-?,pF
if ((mid - l) >= THRESHOLD) LQF;T7VKS)
mergeSort(data, temp, l, mid); 02]HwsvZ
else <aPZE6z
insertSort(data, l, mid - l + 1); aj?ZVa6
if ((r - mid) > THRESHOLD) ]9QXQH
mergeSort(data, temp, mid + 1, r); ;6V~yB
else C6>_wl]
insertSort(data, mid + 1, r - mid); G? SPz
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for (i = l; i <= mid; i++) { !!.@F;]W
temp = data; jZ~girA
} o6u^hG6~'
for (j = 1; j <= r - mid; j++) { g3ukx$Q{>
temp[r - j + 1] = data[j + mid]; C^$E#|E9 N
} )v(rEY
int a = temp[l]; "-:H$
int b = temp[r]; rO}1E<g
(
for (i = l, j = r, k = l; k <= r; k++) { %p\~
if (a < b) { Aw7N'0K9UN
data[k] = temp[i++]; $?ss5:
S
a = temp; ?8753{wk
} else { %g?M?D8Ud3
data[k] = temp[j--]; v}!lx)#
b = temp[j]; 61_PSScSY
} Ja1 `S+
} `@y~ JNf!
} TFHYB9vV
J{4=:feIC?
/** ZKI8x1>Iq
* @param data Q%6zr9
* @param l D&fOZVuqZ
* @param i >FeCa
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*/ /%g@ ;
private void insertSort(int[] data, int start, int len) { ~vYFQKrb
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); "C}<umJ'
} 92j[b_P
} (%6fZ
} O}C*weU
} y_:{p5u
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堆排序: "y8W5R5kL4
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package org.rut.util.algorithm.support; WReHep
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import org.rut.util.algorithm.SortUtil; &tUX(
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/** I*3>>VN
* @author treeroot [#!Y7Ede
* @since 2006-2-2 /sYr?b!/<6
* @version 1.0 8}BM`@MG
*/ 1#L%Q(G
public class HeapSort implements SortUtil.Sort{ P:Q&lnC
?*
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/* (non-Javadoc) I`+,I`~u
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "uplk8iCJ
*/ #y&5pP:@
public void sort(int[] data) { y /vc\e
MaxHeap h=new MaxHeap(); ,OrrGwp&
h.init(data); A#`$#CO
for(int i=0;i h.remove(); Lt~&K$t7~
System.arraycopy(h.queue,1,data,0,data.length); Eg&5tAyM
} (0@b4}Z
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private static class MaxHeap{ OeGLMDw
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void init(int[] data){ U
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this.queue=new int[data.length+1]; BW)@.!C
for(int i=0;i queue[++size]=data; X+{brvM<
fixUp(size); C6g p}%
} zv"NbN
} C`ZU.|R
jBEW("4R
private int size=0; o]I8Ghk>/z
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private int[] queue;
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public int get() { JS03BItt
return queue[1]; ?}KD<R
} J>M 9t%f@
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public void remove() { l_;6xkv4
SortUtil.swap(queue,1,size--); 3{qB<*!p"G
fixDown(1); "C3J[) qC
} u-jV@Tz
file://fixdown -F(luRBS(W
private void fixDown(int k) { W NeBthq6
int j; *oLDy1<
while ((j = k << 1) <= size) { Y9-F\t=~
if (j < size %26amp;%26amp; queue[j] j++; e1b?TF@lz
if (queue[k]>queue[j]) file://不用交换 yFd .tQs
break; }T PyHq"
SortUtil.swap(queue,j,k); %Cj_z
k = j; `'3&tAy
} =i}lh}(
} 8,F|*YA
private void fixUp(int k) { "3 ++S
while (k > 1) { GwA\>qXw
int j = k >> 1; \HrtPm`e
if (queue[j]>queue[k]) cBbumf 9C
break; -cJ,rrN_9
SortUtil.swap(queue,j,k);
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k = j; Ttl
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} |bQF.n_
} t>a D;|Y
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} TC2%n\GH*
y5KeUMcu
} RnC+]J+?4
E 6MeM'sx
SortUtil: J8@.qC'!
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package org.rut.util.algorithm; "*`!.9pt
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import org.rut.util.algorithm.support.BubbleSort; kVCWyZh4
import org.rut.util.algorithm.support.HeapSort; FjizPg/|!
import org.rut.util.algorithm.support.ImprovedMergeSort; >S0kiGDV{
import org.rut.util.algorithm.support.ImprovedQuickSort; /oJ &