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。 +#W5Qb}VR
插入排序: l6&R
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package org.rut.util.algorithm.support; Q~9:}_@
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import org.rut.util.algorithm.SortUtil; h3:k$`_
/** {E9Y)Z9
* @author treeroot cX*^PSM
* @since 2006-2-2 qG;WX n
* @version 1.0 eaI&DP
*/ d;
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public class InsertSort implements SortUtil.Sort{ !} 1p:@
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/* (non-Javadoc) pY2nv/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D@2Tx
*/ Z#F2<*+Pe
public void sort(int[] data) { !v^D
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int temp; 6)TFb,
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); eC1cE
} ?Z;knX\?J
} .G^.kg ,
} 43/|[
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} l_8t[
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冒泡排序: `+<5QtD
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package org.rut.util.algorithm.support; T-27E$0
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import org.rut.util.algorithm.SortUtil; gSP|;Gy
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/** QutQG
* @author treeroot nOOA5Gz
* @since 2006-2-2 u tQ_!3u
* @version 1.0 j88H3bi0
*/ D[U5SS!)
public class BubbleSort implements SortUtil.Sort{ ;VvqKyUh7`
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/* (non-Javadoc) ecr pv+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C[~b6UP
*/ ^oA^z1>3
public void sort(int[] data) { z7J#1q~:yY
int temp; +lE 9*Gs_$
for(int i=0;i for(int j=data.length-1;j>i;j--){ S9mj/GpL3
if(data[j] SortUtil.swap(data,j,j-1); \5J/?
} wWwY.}j
} N2C^'dFj
} _w(SHWh2
} Vk[m$
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} GCc@
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选择排序: 3pm;?6i6
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package org.rut.util.algorithm.support; _t3n<
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import org.rut.util.algorithm.SortUtil; J8(v65
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/** EpS"NQEe
* @author treeroot eFbr1IV
* @since 2006-2-2 O7:JG[tR*
* @version 1.0 5^[V%4y>
*/ 8{@#N:SY
public class SelectionSort implements SortUtil.Sort { OZ0q6"
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/* $--W,ov5j
* (non-Javadoc) 9V("K
* ]0g<][m
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a+IU<O-J?
*/ =p:D_b
public void sort(int[] data) { H 2\KI(
int temp; ;L++H5Kz6
for (int i = 0; i < data.length; i++) { ho;Km
int lowIndex = i; MHk\y2`/;
for (int j = data.length - 1; j > i; j--) { }JoCk{<31
if (data[j] < data[lowIndex]) { ]xbR:CYJ
lowIndex = j; mRFcZ.7
} td&W>(3d
} x-mRPH
SortUtil.swap(data,i,lowIndex); /c8F]fkZ=
} o"J}@nF
} MW6d-
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} Mq8jPjL
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Shell排序: >y
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package org.rut.util.algorithm.support; A#\NVN8sk
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import org.rut.util.algorithm.SortUtil; c 7E=1*C<
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/** nPD5/xW
* @author treeroot Szsq|T
* @since 2006-2-2 ;3-5U&Axt
* @version 1.0 YcBY[i0
*/ ^?VYE26
public class ShellSort implements SortUtil.Sort{ '!I^Lfz-Z
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/* (non-Javadoc) " +'E
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d;daYjOm
*/ a=+qR:wT
public void sort(int[] data) { 06|+_
for(int i=data.length/2;i>2;i/=2){ M1^,g~e
for(int j=0;j insertSort(data,j,i); b)tvXiO1>
} S~.:B2=5K
} 3M=ym.
insertSort(data,0,1); JBo/<W#|
} ?kqo~twJ
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/** gBA
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* @param data KWq7M8mq
* @param j V\^3I7F
* @param i q90eB6G0g
*/ `9}\kn-</8
private void insertSort(int[] data, int start, int inc) { '8R5?9"
int temp; m_LW<'
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); z|;7;TwA
} Sp3?I2 o
} \$n?J(N
} D<B/oSy
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} rnz9TmN:*1
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快速排序: X YO09#>&
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package org.rut.util.algorithm.support; _C$JO
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import org.rut.util.algorithm.SortUtil; Fsv:SL+5
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/** $R4[TQY).!
* @author treeroot yNMnByg3?
* @since 2006-2-2 (F@.o1No%
* @version 1.0 `@eo <6
*/ ,y@`wq>O
public class QuickSort implements SortUtil.Sort{ R{uq8NA- W
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/* (non-Javadoc) \' (_r
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (ds-p[`[m
*/ chv0\k"'
public void sort(int[] data) { teh$W<C
quickSort(data,0,data.length-1); G?e"A0,
} p_T>"v
private void quickSort(int[] data,int i,int j){ eV$pza
int pivotIndex=(i+j)/2; ug*#rpb
file://swap %"Tn=fZIF
SortUtil.swap(data,pivotIndex,j); a'=C/ s+
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int k=partition(data,i-1,j,data[j]); e]R`B}vO
SortUtil.swap(data,k,j); Mr'P0^^
if((k-i)>1) quickSort(data,i,k-1); ej-x^G?C
if((j-k)>1) quickSort(data,k+1,j); P F5;2
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} mNS7/I\
/** ."9t<<!
* @param data $@k[Xh
* @param i Du@?j7&l=$
* @param j rF C 6"_
* @return $OOZ-+8
*/ J!r,ktO^U?
private int partition(int[] data, int l, int r,int pivot) { pUtd_8
do{ M =Pn8<h~
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); nk.m Gny
SortUtil.swap(data,l,r); *h6Lh]7
} `;Qw/xl_N
while(l SortUtil.swap(data,l,r); pE.f}
return l; bH+x `]{A
} i
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} {;.q?mj
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改进后的快速排序: ~&-8lD];LM
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package org.rut.util.algorithm.support; P(OgT/7A
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import org.rut.util.algorithm.SortUtil; K"~Tk`[0Q
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/** {z)&=v@
* @author treeroot B&^WRM;7t
* @since 2006-2-2 &' ,A2iG
* @version 1.0 ;A^0="x&
*/ huh-S ,M
public class ImprovedQuickSort implements SortUtil.Sort { \~V
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private static int MAX_STACK_SIZE=4096; ~" \qX+
private static int THRESHOLD=10; [e1kfw
/* (non-Javadoc) 3V")~m
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ftBbO8e
*/ zJ;K4)"j
public void sort(int[] data) { /18Z4TA
int[] stack=new int[MAX_STACK_SIZE]; LW?Zd=
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int top=-1; _@es9
int pivot; ^qNh)?V?]I
int pivotIndex,l,r; zqEMR>px
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stack[++top]=0; X4<!E#
stack[++top]=data.length-1; J?/.|Y]e
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while(top>0){ piIr.]
int j=stack[top--]; yX:A?U
int i=stack[top--]; C+{du^c$
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pivotIndex=(i+j)/2; x+~IXi>Ig
pivot=data[pivotIndex]; ]TTX<R
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SortUtil.swap(data,pivotIndex,j); bkmW[w:M
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file://partition u3{gX{so
l=i-1; ciKkazx.
r=j; ] iKFEd
do{ CbK&.a
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); QusEWq)}<
SortUtil.swap(data,l,r); p/V
} >`rK=?12<
while(l SortUtil.swap(data,l,r); x<)%Gs}tb
SortUtil.swap(data,l,j); 7?6?`no~JJ
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if((l-i)>THRESHOLD){ =~r?(u6d
stack[++top]=i; c"aiZ(aP
stack[++top]=l-1; 4}{S8fGk%
} bH7[6#y$
if((j-l)>THRESHOLD){ z-G|EAON"/
stack[++top]=l+1; @_0g "Ul
stack[++top]=j; uM0!,~&9|
} 0x'-\)v>3
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} %hK?\Pg3=E
file://new InsertSort().sort(data); NN5V|#
P}
insertSort(data); 4XL*e+UfJ
} ]2n&DJu
/** t+0&B"
* @param data ^G63GYh]y
*/ cvn4Q- ^
private void insertSort(int[] data) { NLDmZra
int temp; RL>Nl ow
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 2G"mm(
} .vRLK
}
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} s~$kzEtjjU
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} lo:]r.lX{
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归并排序: Z,o*M#}
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package org.rut.util.algorithm.support; (]0$^!YK
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import org.rut.util.algorithm.SortUtil; [!{*)4$6
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/** )8oI
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* @author treeroot ]+[ NX)=
* @since 2006-2-2 gcr,?rE<
* @version 1.0 u;DF$
*/ ?/"@WP9
public class MergeSort implements SortUtil.Sort{ MoA2Cp;8X
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/* (non-Javadoc) 1rC8]M.N
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z~g~,q
*/ lfu1PCe5
public void sort(int[] data) { 3a#637%
int[] temp=new int[data.length]; Z5Ao3O@
mergeSort(data,temp,0,data.length-1); O:q}<ljp
} D`e!CprF
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private void mergeSort(int[] data,int[] temp,int l,int r){ G5zZf~r
int mid=(l+r)/2; df#DKV:
if(l==r) return ; <(d^2-0
mergeSort(data,temp,l,mid); dk({J
mergeSort(data,temp,mid+1,r); E?z 3&C
for(int i=l;i<=r;i++){ /{7x|ay]
temp=data; 5gI@~h S
} ^/R@bp#<
int i1=l; &X_I^*
int i2=mid+1; Gyy:.]>&
for(int cur=l;cur<=r;cur++){ KBzEEvx/$
if(i1==mid+1) Mim 9C]h(
data[cur]=temp[i2++]; ?`\<t$M
else if(i2>r) -+|0LXo
data[cur]=temp[i1++]; S=[K/Kf-
else if(temp[i1] data[cur]=temp[i1++]; NNutpA}s
else D.qbzJz
data[cur]=temp[i2++]; 8[f]9P/i
} (5-"5<-@R
} ]S,I}NP
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} \R&`bAd k
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改进后的归并排序: lqqY5l6j
nT|fDD|
package org.rut.util.algorithm.support; Podm 3b
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import org.rut.util.algorithm.SortUtil; p`{<q
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/** l:Ci'=
* @author treeroot rVQ:7\=Z
* @since 2006-2-2 'ycs{}'
* @version 1.0 ^fnRzX
*/ f(D?g
public class ImprovedMergeSort implements SortUtil.Sort { K*
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private static final int THRESHOLD = 10; LfOGq%&
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/* ?\$77k
* (non-Javadoc) axU!o /m>
* .vQ2w
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =*Wl;PI'
*/ nkN]z
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public void sort(int[] data) { W'gCFX
int[] temp=new int[data.length]; \FVR'A1
mergeSort(data,temp,0,data.length-1); %l:%c
} 1Lj\"+.
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private void mergeSort(int[] data, int[] temp, int l, int r) { CoJaVLl
int i, j, k; 7
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int mid = (l + r) / 2; 8l!S<RA
if (l == r) ?0'bf y]
return; kf "cd1
if ((mid - l) >= THRESHOLD) wQ.ild
mergeSort(data, temp, l, mid); @gxO%@@
else oVC~RKA*
insertSort(data, l, mid - l + 1); Q.\+
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if ((r - mid) > THRESHOLD) %HYC-TF#
mergeSort(data, temp, mid + 1, r); C:4h
else 9SAyU%mS:
insertSort(data, mid + 1, r - mid); )%,bog(x
k(VA5upCs
for (i = l; i <= mid; i++) { CUxSmN2[
temp = data; m"U\;Mw?
} dC,F?^
for (j = 1; j <= r - mid; j++) { p[Q
temp[r - j + 1] = data[j + mid]; ? `FI!3j
} 00b
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int a = temp[l]; P\N`E?lJL
int b = temp[r]; 3$HFHUMQsk
for (i = l, j = r, k = l; k <= r; k++) { AFMAgf{bD
if (a < b) { ^=R>rUCmv
data[k] = temp[i++]; gvy%`SSW
a = temp; h ?p^DPo
} else { ||L qx#e=
data[k] = temp[j--]; eKStt|M'
b = temp[j]; |L`w4;
} 2^qY,dL
} "F%cn@l
} 7qzI]
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/**
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* @param data hsfVKlw-
* @param l kTC6fNj[
* @param i &+*jTE
*/ YToRG7X#
private void insertSort(int[] data, int start, int len) { 3s>&h-E
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); IOIGLtB
} z
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} %
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} T+2?u.{I
} KZDB \T
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堆排序:
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package org.rut.util.algorithm.support; ?<F\S2W
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import org.rut.util.algorithm.SortUtil; $> #PhOC
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/** !-2S(8
* @author treeroot wetkmd
* @since 2006-2-2 J-I7K!B
* @version 1.0 yY,.GzIjCj
*/ 0n3O;=[aV
public class HeapSort implements SortUtil.Sort{ ^M?uv{354
!-\*rdE{9
/* (non-Javadoc) ,L_p"A
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q:nYUW o
*/ M)3h 4yQ
public void sort(int[] data) { qe\j$Cjy
MaxHeap h=new MaxHeap(); gk]r:p<