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。 /3A^I{e74
插入排序: VGtC)mG8)
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package org.rut.util.algorithm.support; O_$m!5ug
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import org.rut.util.algorithm.SortUtil; >"gf3rioW
/** W4[V}s5u
* @author treeroot )A!>=2M`
* @since 2006-2-2 (EK"V';
* @version 1.0 EG0WoUX|
*/ u1t%(_h
public class InsertSort implements SortUtil.Sort{ $SM#< @
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/* (non-Javadoc) r;>*_Oc7g
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =g/{%;
*/ kHXL8k#T
public void sort(int[] data) { Mzsfo;kk+
int temp; =3q/F7-
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); eAX
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} [PQ?#:r
} ;FBUwR}
} 0|2%vh >J
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} bA=
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冒泡排序: SGh1 DB
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package org.rut.util.algorithm.support; *F
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import org.rut.util.algorithm.SortUtil; Qi_>Mg`x
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/** r)Ap8?+
* @author treeroot j;s"q]"x]
* @since 2006-2-2 !6s"]WvF
* @version 1.0 V+Cwzc^j
*/ /DQc&.jK
public class BubbleSort implements SortUtil.Sort{ L !=4N!j
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/* (non-Javadoc) XEn*?.e
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _{R=B8Zz\
*/ Jj,U RD&0R
public void sort(int[] data) { ?47@o1
int temp; \]P!.}nX#
for(int i=0;i for(int j=data.length-1;j>i;j--){ RQ'exc2x0
if(data[j] SortUtil.swap(data,j,j-1); V6t,BJjS
} `kbSu}
} 6T+FH;h
} NG
} Mr?Xp(.}G
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} .u:81I=w(
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选择排序: (4'$y`Z
P`#Z9 HM4
package org.rut.util.algorithm.support; g)s{IAVx
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import org.rut.util.algorithm.SortUtil; f8M$45A'
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/** `!Ds6
* @author treeroot CamE'
* @since 2006-2-2 *c%oN
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* @version 1.0 o&`<+4
i
*/ 2WtRJi?b|
public class SelectionSort implements SortUtil.Sort { F#5B<I
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/* c6nflk.l
* (non-Javadoc) tjGd )
* k$H%.l;E
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '~ ,p[
*/ ][W_[0v
public void sort(int[] data) { K?s+ 3
int temp; FDVcow*] n
for (int i = 0; i < data.length; i++) { l5\"9 ,<
int lowIndex = i; UNPezHaz
for (int j = data.length - 1; j > i; j--) { w QNxL5B
if (data[j] < data[lowIndex]) { Bn61AFy`
lowIndex = j; ms!r ef4`+
} e*bH0'; q
} .C2TQ:B, .
SortUtil.swap(data,i,lowIndex); {?J/c{=/P
} 6U[4%(
} ;QW3CEaUq
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} qZ}P*+`Q
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Shell排序: aYuD>rD
" R-!(9k^`
package org.rut.util.algorithm.support; OiE;B
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import org.rut.util.algorithm.SortUtil; Si_%Rr&jW
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/** P(XaTU&-
* @author treeroot s3]?8hXd
* @since 2006-2-2 -1ce<nN
* @version 1.0 ]u4Hk?j~<
*/ K_2|_MLlZ
public class ShellSort implements SortUtil.Sort{ EL8NZ%:v:
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/* (non-Javadoc) U Z|HJ8_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dbOdq
*/ FXzFHU/dP
public void sort(int[] data) { :6zG7qES3
for(int i=data.length/2;i>2;i/=2){ %{/%mJoX
for(int j=0;j insertSort(data,j,i); Eh =~T9
} ^s@8VAwi
} c)A{p
insertSort(data,0,1); P>sFV
} ,Z{d.[$
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/** z]2]XTmWs
* @param data i&vaeP25)
* @param j v.:3"<ur}
* @param i uu}x@T@
*/ '=1KVE^Fk
private void insertSort(int[] data, int start, int inc) { [@Q_(LQ-U
int temp; -
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for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); /v/C<]
} H"C[&r
} {}QB|IH`
} -S$1Yn
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} $&<uT
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快速排序: ukv tQz)
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package org.rut.util.algorithm.support; `2`\]X_A{
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import org.rut.util.algorithm.SortUtil; @BrMl%gV
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/** `;l?12|X
* @author treeroot OvUI@,Ef
* @since 2006-2-2 1fo
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* @version 1.0 >[Ye
*/ jMbC Y07v
public class QuickSort implements SortUtil.Sort{ 549jWG
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/* (non-Javadoc) +<}0|Xl&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,SQZD,3v4
*/ *J+_|_0nlW
public void sort(int[] data) { 'Fs)Rx}\0
quickSort(data,0,data.length-1); 0b/ WpP
} u$D*tqxG
private void quickSort(int[] data,int i,int j){ ;U<rc'qE
int pivotIndex=(i+j)/2; =)E,8L
file://swap N? 5x9duK
SortUtil.swap(data,pivotIndex,j); v3GwD00
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int k=partition(data,i-1,j,data[j]); !q-f9E4`
SortUtil.swap(data,k,j); E;d7ch
if((k-i)>1) quickSort(data,i,k-1); @q"m5
if((j-k)>1) quickSort(data,k+1,j); 25NTIzI@@
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} yA)(*PFz
/** =
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* @param data mo1oyQg8
* @param i nOQa_G]Gz
* @param j zNY)'
* @return _{Sm k[
*/ M:P0m6ie
private int partition(int[] data, int l, int r,int pivot) { R(-<BtM!-
do{ }BiiE%a
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); $2<d<Um~z
SortUtil.swap(data,l,r); ^/5XZ} *
} Qj3a_p$)P
while(l SortUtil.swap(data,l,r); ,ZQZ}`x(
return l; <BO)E(
} !r`, =jK"
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} uZZU{U9h
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改进后的快速排序: n39t}`WIl
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package org.rut.util.algorithm.support; R/^u/~<
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import org.rut.util.algorithm.SortUtil; l~D N1z6`
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/** it>r+%
* @author treeroot I+ es8
* @since 2006-2-2 xr7+$:>a
* @version 1.0 <" @zn
*/ vsL[*OeI
public class ImprovedQuickSort implements SortUtil.Sort { ?88`fJ@tk?
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private static int MAX_STACK_SIZE=4096; +kq'+ Y7
private static int THRESHOLD=10; i5>+}$1
/* (non-Javadoc) 5@hNnh16
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O$kq`'9
*/ peJKNX.!q
public void sort(int[] data) {
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int[] stack=new int[MAX_STACK_SIZE]; c*`>9mv
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int top=-1; saU]`w_Z*
int pivot; OEPa|rb
int pivotIndex,l,r; }|B=h
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stack[++top]=0; ^'p|!`:
stack[++top]=data.length-1; A~Xq,BxCV
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while(top>0){ m=Q[\.Ra
int j=stack[top--]; s/:Fwr4q#a
int i=stack[top--]; 0wFH!s/B
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pivotIndex=(i+j)/2; AH4EtZC=W
pivot=data[pivotIndex]; -`f04_@>d
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SortUtil.swap(data,pivotIndex,j); #{9G sD
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file://partition
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l=i-1; ^E6d`2w-
r=j; LkLN7|
do{ |0{u->+ )
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); jKZt~I
SortUtil.swap(data,l,r); YF:2>w<
} h;V,n
while(l SortUtil.swap(data,l,r); w[_x(Ojq;
SortUtil.swap(data,l,j); =SD\Q!fA
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if((l-i)>THRESHOLD){ WZ!WxX>zO
stack[++top]=i;
-
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stack[++top]=l-1; yAL1O94
} ]NhS=3*i+
if((j-l)>THRESHOLD){ aS|wpm)K>8
stack[++top]=l+1; ^). )
stack[++top]=j; D;Gq)]O
} OzT#1T1'c
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} XJ!(F#zc
file://new InsertSort().sort(data); iqhOi|!
insertSort(data); G5D2oQa=8
} CK_(b"
/** *n(> ^
* @param data pium$4l2#
*/ y[O-pD`
private void insertSort(int[] data) { #a| L3zR5v
int temp; $jd<v1"o
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); aTGdmj!
} A =Dhod
} nK3k]gLc{
} 7&O`p(j
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} WxbsD S;
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归并排序: a;$P:C{gj?
I8H%=Kb?9
package org.rut.util.algorithm.support; IMQ]1uq0$
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import org.rut.util.algorithm.SortUtil; U,1AfzlF
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/** NYABmI/0c
* @author treeroot Ip}Vb6}
* @since 2006-2-2 rVQX7l# YI
* @version 1.0 rOD1_X-
*/ _SZ5P>GIU
public class MergeSort implements SortUtil.Sort{ oK+
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/* (non-Javadoc) ^IgY d*5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jnuY{0(&
*/ [ neXFp}S
public void sort(int[] data) { ~un%4]U
int[] temp=new int[data.length]; |m,VTViv;i
mergeSort(data,temp,0,data.length-1); ?p[O%_Xf
} r^HAa GpC
j2h[70fWC
private void mergeSort(int[] data,int[] temp,int l,int r){ w W$(r-
int mid=(l+r)/2; ovf/;Q/}
if(l==r) return ; WW@"Z}?k
mergeSort(data,temp,l,mid); &jV_"_3n
mergeSort(data,temp,mid+1,r); r)1Z(tl
for(int i=l;i<=r;i++){ 1xnLB>jP#
temp=data; G>T')A
} l{P\No
int i1=l; __p_8P
int i2=mid+1; V'Qn sI
for(int cur=l;cur<=r;cur++){ km:nE: |
if(i1==mid+1) H L<s@kEZ
data[cur]=temp[i2++]; tn/T6C^)
else if(i2>r) WV kR56
data[cur]=temp[i1++]; iO!6}yJ*V
else if(temp[i1] data[cur]=temp[i1++]; ++[5q+b
else d]0a%Xh[
data[cur]=temp[i2++]; W( *V2<$o
} Em13dem
} N~=A
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gx
} IGj`_a
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改进后的归并排序: (UEXxUdQ_Q
]!YtH]}
package org.rut.util.algorithm.support; sCH)gr@gJ^
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import org.rut.util.algorithm.SortUtil; H D/5!d
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/** XOb}<y)r~
* @author treeroot /jD-\,:L}
* @since 2006-2-2 i4Z4xTn
* @version 1.0 >tRHNB_
*/ i6no;}j
public class ImprovedMergeSort implements SortUtil.Sort { nl/UdgI
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private static final int THRESHOLD = 10; ~krS#\
z>vtEV))
/* +6W(z3($
* (non-Javadoc) >`V}U*}*H
* e`UQz$4!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ef7:y|?
*/ `U`#I,Ln[
public void sort(int[] data) { c5i%(!>
int[] temp=new int[data.length]; ,axDMMDI
mergeSort(data,temp,0,data.length-1); _Sj}~H
} ;q#]-^
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private void mergeSort(int[] data, int[] temp, int l, int r) { b#Kq[}
int i, j, k; (wt+`_6
int mid = (l + r) / 2; yFIIX=NC
if (l == r) W=-|`
return; OHp5z?
z
if ((mid - l) >= THRESHOLD) R"6;NPeo
mergeSort(data, temp, l, mid); 2z2`
else |w)5;uQ&\
insertSort(data, l, mid - l + 1); 2wh#$zGy
if ((r - mid) > THRESHOLD) setLdEi
mergeSort(data, temp, mid + 1, r); o$_93<zc
else cqL(^R.
insertSort(data, mid + 1, r - mid); E'dX)J9e$/
6* rcR]
for (i = l; i <= mid; i++) { )&1!xF
temp = data; RR25Q.c
} r4knN
2:
for (j = 1; j <= r - mid; j++) { f{Q p
temp[r - j + 1] = data[j + mid]; ]W9B6G_
} 4~u9B/v
int a = temp[l]; G!-J$@P
int b = temp[r]; 13f<0wg
for (i = l, j = r, k = l; k <= r; k++) { lH1g[ ))
if (a < b) { ()|3
data[k] = temp[i++]; Enj_tJs
a = temp; .|]IwyD
&
} else { $B _Nc*_e
data[k] = temp[j--]; SPwPCI1?
b = temp[j]; 6$e]i|e
} (r F?If
} d/j@_3'
} 5:gj&jt;)7
jUY+3"?
/** ( tn<
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* @param data h`?k.{})M
* @param l !$kR ;Q"/
* @param i jXcNAl
*/ xdF guV8
private void insertSort(int[] data, int start, int len) { ,{<Fz%
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ToU.mM?f^
} #8?^C]*{0
} };SV!'9s?~
} vl5){@
} sd!sus|( R
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堆排序: k,_i#9X
YN#XmX%
package org.rut.util.algorithm.support; :WX0,-Gn
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import org.rut.util.algorithm.SortUtil; +i)AS0?d
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/** ,f<B}O
* @author treeroot ^
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* @since 2006-2-2 (+MC<J/i
* @version 1.0 f)Y
*/ VD;j[~/Z
public class HeapSort implements SortUtil.Sort{ #]zhZW4
W8*
2;F]
/* (non-Javadoc) BJIQ
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0zV 4`y
*/ |cu`f{E2]
public void sort(int[] data) { oyQ0V94j
MaxHeap h=new MaxHeap(); /.ZaE+
h.init(data); 'G
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for(int i=0;i h.remove(); 8A/>JD3^
System.arraycopy(h.queue,1,data,0,data.length); ;Q90Y&{L=$
}
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private static class MaxHeap{ r<_2qICgP
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void init(int[] data){ csvOg[
this.queue=new int[data.length+1]; 1ZNNsB
for(int i=0;i queue[++size]=data; FNJ!IkuR
fixUp(size); !3x*k;0
} ewQe/Fq
} k`@w(HhS
sRi %1r7
private int size=0; + (=I8s/
5mIXyg 0:
private int[] queue; '>]&r