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。 IA1O]i
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插入排序: rA<J^dX=C
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package org.rut.util.algorithm.support; {DvWa|
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import org.rut.util.algorithm.SortUtil; fU.hb%m)Q\
/** P/~dY[6m
* @author treeroot 5r8
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* @since 2006-2-2 G2[2y-Rv
* @version 1.0 4ybOK~z
*/ HSG9|}$
public class InsertSort implements SortUtil.Sort{ #F
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/* (non-Javadoc) .wm<l:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZPM7R3%V)z
*/ T06w`'aL
public void sort(int[] data) { <5]_u:
int temp; 4mBM5Tv
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); -$s1k~o
} L}8 }Pns?&
} [uie]*^
} j }^?Snq
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} jkuNafp}
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冒泡排序: !Y^$rF-+
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package org.rut.util.algorithm.support; .*EP$pc
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import org.rut.util.algorithm.SortUtil; Q4ii25]*
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/** /Jk.b/t.*S
* @author treeroot c:z}$DK&'
* @since 2006-2-2 Y=pRenV'
* @version 1.0 6*ZZ)W<
*/ Tig6<t+Q
public class BubbleSort implements SortUtil.Sort{ ,,9vk \
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/* (non-Javadoc) Z#%77!3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3_VWtGQ
*/ qj*BV
public void sort(int[] data) { jq/{|<0
int temp; &xlOsr/n
for(int i=0;i for(int j=data.length-1;j>i;j--){ 1d.>?^uE
if(data[j] SortUtil.swap(data,j,j-1); wL0"1Ya
} kgmb<4p
} jS/$o ?
} U/(R_U>=
} yCg>]6B
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} 4f0dc\$
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选择排序: WWTJ%Rd|
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package org.rut.util.algorithm.support; [qt^gy)
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import org.rut.util.algorithm.SortUtil; x2f_>tu2
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/** `+r5I5
* @author treeroot IZ4jFgpR
* @since 2006-2-2 8J9o$Se
* @version 1.0 yFP#z5G
*/ .Qj`_q6=
public class SelectionSort implements SortUtil.Sort { Sag\wKV8
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/* pm;g)p?
* (non-Javadoc) 7@VR:~n}k
* GHWpL\A{8`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %^E>~
*/ `[1]wV5(5@
public void sort(int[] data) { Md m(xUs
int temp;
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for (int i = 0; i < data.length; i++) { .~8IW,[
int lowIndex = i; &9g#Vq%
for (int j = data.length - 1; j > i; j--) { Vk~}^;`Y
if (data[j] < data[lowIndex]) { G}~b
lowIndex = j; *JOv
} q`;URkjk
} ` }Hnj*
SortUtil.swap(data,i,lowIndex); 1$2Rs-J
} CUw
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} `Op
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} 8@Km@o]?
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Shell排序: )'<zC
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package org.rut.util.algorithm.support; &q` =xF
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import org.rut.util.algorithm.SortUtil;
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/** IweQB} d
* @author treeroot uTJ?@^nq
* @since 2006-2-2 Cw^)}23R
* @version 1.0 Wj*6}N/
*/ wy&*6>.
public class ShellSort implements SortUtil.Sort{ T@HozZ
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/* (non-Javadoc) Pr/&p0@aV
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CC87<>V
*/
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public void sort(int[] data) { 1Q;`<=
for(int i=data.length/2;i>2;i/=2){ )DLK<10
for(int j=0;j insertSort(data,j,i); y! 1NS
} rC*n Z*
} (c*Dvpo1
insertSort(data,0,1); S I(8.$1
} )*JTxMQ
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/** O@Kr}8^,
* @param data IH0^*f
* @param j 9VY_gi=vL
* @param i #5I "M WA
*/ t[
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private void insertSort(int[] data, int start, int inc) { `4p9K
int temp; BzUx@,
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); u1kbWbHu(
} hP#&]W3:
} Mo<p+*8u:
} %`\{Nxk
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} J/*[wj
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快速排序: +%~g$#tlJo
MU^Z*r
package org.rut.util.algorithm.support; <z4!m/f[(
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import org.rut.util.algorithm.SortUtil; !%(B2J
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/** \5l}5<|
* @author treeroot TPzoU"
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* @since 2006-2-2 v>P){VT
* @version 1.0 ?d%}K76V<
*/ 1|89-Ii]
public class QuickSort implements SortUtil.Sort{ 5~?
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/* (non-Javadoc) cS[`1y,\3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0nuFWV
*/ pVY.&XBZ$
public void sort(int[] data) { 5VcYdu3
quickSort(data,0,data.length-1); Y#5S;?bR
} ;Os3
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private void quickSort(int[] data,int i,int j){ :4Vt
int pivotIndex=(i+j)/2; !14z4]b
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SortUtil.swap(data,pivotIndex,j); m4
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int k=partition(data,i-1,j,data[j]); 'mM5l*{
SortUtil.swap(data,k,j); f<'C<xnf
if((k-i)>1) quickSort(data,i,k-1); G7<X l}
if((j-k)>1) quickSort(data,k+1,j); / u{r5`4
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} >j?uI6Uw
/** M@3H]t?
* @param data :U>
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* @param i XDGZqkt
* @param j 1 &<@(S<
* @return VQ;=-95P
*/ _V?Q4}7d/
private int partition(int[] data, int l, int r,int pivot) { (
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do{ 1XKk~G"D
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Sm,$~~iq}
SortUtil.swap(data,l,r); xl^'U/
} {%Y7]*D
while(l SortUtil.swap(data,l,r); ;sf/tX
return l; }ie]7N6;
} 9.B7Owgr89
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} )Fw)&5B!
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改进后的快速排序: S7vE[VF5
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package org.rut.util.algorithm.support; `4qKQJw
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import org.rut.util.algorithm.SortUtil; >A/=eW/q
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/** +9J>'oe'D
* @author treeroot ^b~5zhY&
* @since 2006-2-2 >>r:L3 <!
* @version 1.0 *Y ZLQT
*/ -G 'lyH
public class ImprovedQuickSort implements SortUtil.Sort { e{,/
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private static int MAX_STACK_SIZE=4096; URgF8?n
private static int THRESHOLD=10; pS\>X_G3
/* (non-Javadoc) C(t/:?(y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #`$7$Y~]
*/ u"jnEKN0y
public void sort(int[] data) { K;PpS*!
int[] stack=new int[MAX_STACK_SIZE]; M=A9ax
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int top=-1; hz%IxI9
int pivot; Q:\hh=^
int pivotIndex,l,r;
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stack[++top]=0; bph*X{lFK
stack[++top]=data.length-1; M}Mzm2d#`
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while(top>0){ ?s]`G'=>V`
int j=stack[top--]; JPG!cX%
int i=stack[top--]; [
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pivotIndex=(i+j)/2; C.-a:oQ[
pivot=data[pivotIndex]; o{p_s0IX;S
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SortUtil.swap(data,pivotIndex,j); 9_3M}|V$^e
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file://partition rE:>G]j6
l=i-1; {)qP34rM
r=j; Cj+=9Dc
do{ ~~,<+X:
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); YC<I|&"
SortUtil.swap(data,l,r); K7c8_g*>4=
} f,>i%.
while(l SortUtil.swap(data,l,r); ex458^N_
SortUtil.swap(data,l,j); N}G(pq}
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if((l-i)>THRESHOLD){ 8B/9{8
stack[++top]=i;
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stack[++top]=l-1; "S:N-Tf%U
} 8A .7=C' z
if((j-l)>THRESHOLD){ }HorR2(`N
stack[++top]=l+1; #+0R!Y
stack[++top]=j; F.D1;,x
} c^IEj1@}'?
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} H@'
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file://new InsertSort().sort(data); UAZ&*{MM^
insertSort(data); hJsC
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} ,v_r$kh^
/** Y;Gm,
* @param data ASw|sw
*/ {2^@jD
private void insertSort(int[] data) { I >Q,]S1h
int temp; Ai18]QD-
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); u$8MVP
} ycD.:w p\'
} YCO:bBmp:
} @98SC}}u
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} UE w3AO
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归并排序: z&,sm5Lb
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package org.rut.util.algorithm.support; \r,.hUp
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import org.rut.util.algorithm.SortUtil; M) XQi/
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/**
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* @author treeroot L$Ar]O)
* @since 2006-2-2 J6D$ i+
* @version 1.0 -U[`pUY?f
*/
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public class MergeSort implements SortUtil.Sort{ \'Kj.EO{?$
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/* (non-Javadoc) z|)1l`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }#5roNH~Z
*/ C/XyDbH
public void sort(int[] data) { a' o8n6i
int[] temp=new int[data.length]; }p?V5Qp
mergeSort(data,temp,0,data.length-1); h\\2r>
} Q$/F gS
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private void mergeSort(int[] data,int[] temp,int l,int r){ M|e
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int mid=(l+r)/2; 9= $,] M
if(l==r) return ; =3dbw8I
mergeSort(data,temp,l,mid); Ia:puks=
mergeSort(data,temp,mid+1,r); mIEaWE;E"
for(int i=l;i<=r;i++){ _J~ta.
temp=data; ik0Q^^1?Y
} ULmdt
int i1=l; {0WIDD
int i2=mid+1; s^'#"`!v=
for(int cur=l;cur<=r;cur++){ M`pTT5r
if(i1==mid+1) .t[ZXrd|0
data[cur]=temp[i2++]; .+L_!A
else if(i2>r) 6-14Htsk6
data[cur]=temp[i1++]; 4Olv8nOe<
else if(temp[i1] data[cur]=temp[i1++]; aw%vu
else P3ev4DL
data[cur]=temp[i2++]; L4*fF
} b(-t)5^}
} }.V0SM6
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} 7C7(bg,7^
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改进后的归并排序: {&u7kWD|
T^;Jz!e
package org.rut.util.algorithm.support; ss@}Dt^
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import org.rut.util.algorithm.SortUtil; UJ)M:~O
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/** C"Q=(3
* @author treeroot AnE_<sPA
* @since 2006-2-2 \ +-hn
* @version 1.0 =)1YYJTe9
*/ $o$Ev@mi
public class ImprovedMergeSort implements SortUtil.Sort { jsi#l
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private static final int THRESHOLD = 10; Iki+5
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/* >c\v&k>6.
* (non-Javadoc) .O%1)p
* CSqb)\8Oi*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )bXx9,VL
*/ akc"}+-oX
public void sort(int[] data) { h)l&K%4;
int[] temp=new int[data.length]; qb&NS4#
mergeSort(data,temp,0,data.length-1); sa(M66KkU
} -WBz]GW4r
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private void mergeSort(int[] data, int[] temp, int l, int r) { Fp6[W5>(-
int i, j, k; <Dj$0g
int mid = (l + r) / 2; +6M+hO]
if (l == r) 0H&U=9'YT
return; ji)4WG/1
if ((mid - l) >= THRESHOLD) 2DCcGKa"
mergeSort(data, temp, l, mid); H0b6ZA%n
else ivUsMhx>S,
insertSort(data, l, mid - l + 1); !0csNg!
if ((r - mid) > THRESHOLD) uyRA`<&w
mergeSort(data, temp, mid + 1, r); s!;VUr\
else <AAZ8#^
insertSort(data, mid + 1, r - mid); r|\'9"@
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for (i = l; i <= mid; i++) { 6n6VEwYj
temp = data; p1VahjRE-
} e(; `9T
for (j = 1; j <= r - mid; j++) { 'UvS3]bSYW
temp[r - j + 1] = data[j + mid]; @wdB%
} R4~zL!7;
int a = temp[l]; Wt)SdF=U/
int b = temp[r]; 4>"cc@8&~
for (i = l, j = r, k = l; k <= r; k++) { )lDIzLp
if (a < b) { q4.dLU,1
data[k] = temp[i++]; 'f?&EsIV?
a = temp; tC@zM.v%
} else { mQ^@ \s
data[k] = temp[j--]; o&XMgY~
b = temp[j]; OBw`!G*w
} _[{:!?-?
} ,7fc41O3V
} bDFCZH-:'O
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/** gR-Qj
* @param data qv0
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* @param l 'Elj"Iiu
* @param i o,Tr^e$
*/ v<7Gln
private void insertSort(int[] data, int start, int len) { D _bkUR1
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); +{C9uY)$vf
} `J=1&ae