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。 9&Z+K'$=
插入排序: x+[ATZ([
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package org.rut.util.algorithm.support; w8`B}Dr23
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import org.rut.util.algorithm.SortUtil; @qB>qD~WsD
/** $s"-r9@q
* @author treeroot V \/Qik{h
* @since 2006-2-2 4Zn [F^p
* @version 1.0 ffsF], _J
*/ FRsp?i
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public class InsertSort implements SortUtil.Sort{ 6A ptq
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/* (non-Javadoc) ~^fb`f+%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a>,Zp*V(
*/ 6!([Hu#= *
public void sort(int[] data) { G[{Av5g mx
int temp; >1` '5A}s
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); :G&:v
} k+hl6$:Qj%
} VeOM `jy
} "@t bm[
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冒泡排序: @S6@pMo,
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package org.rut.util.algorithm.support; #] ;ulDq
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import org.rut.util.algorithm.SortUtil; |<uBJ-5
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/** 7JBr{3;eS
* @author treeroot Ve<f}
* @since 2006-2-2 8EBd`kiq
* @version 1.0 [I7=]X
*/ (B03f$8}*_
public class BubbleSort implements SortUtil.Sort{ E
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/* (non-Javadoc) B[t>T>~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #+$PD`j
*/ 46~nwi$,^
public void sort(int[] data) { Tt,T6zs-<
int temp; N:%Nq8I}:
for(int i=0;i for(int j=data.length-1;j>i;j--){ **.23<n^W
if(data[j] SortUtil.swap(data,j,j-1); s|X_:3\x
} ant2];0p
} #c~-8=
} l8e)|MSh
} { _Y'%Ggh
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} /)<kG(Z
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选择排序: >;%LW}
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package org.rut.util.algorithm.support; [ u ^/3N
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import org.rut.util.algorithm.SortUtil; XD80]@\za
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/** F)@zo/u5L
* @author treeroot *e:2iM)8~
* @since 2006-2-2 VKg9^%#b`[
* @version 1.0 kYR^
*/ *^CN2tm
public class SelectionSort implements SortUtil.Sort { pimI)1 !$'
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/* x6^FpNgQ
* (non-Javadoc) 9#kk5 )J
* O'QnfpQ*9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j,z)x[3}
*/ OF:0jOW
public void sort(int[] data) { ZP-9KA$"
int temp; ]cWQ9
for (int i = 0; i < data.length; i++) { D%6}x^`Qk
int lowIndex = i; (!Xb8rV0_
for (int j = data.length - 1; j > i; j--) { VFm)!'=I
if (data[j] < data[lowIndex]) { KcW 5
lowIndex = j; Q5_ ,`r`
} 15%6;K?b
} w{N8Y~O
SortUtil.swap(data,i,lowIndex); Pon0(:#1
} ;alt% :$n
} KIKIag#
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} JOs
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Shell排序: rd"!&i
j HObWUX
package org.rut.util.algorithm.support; B[2t.d;h
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import org.rut.util.algorithm.SortUtil; E,ooD3$h
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/** G;USVF-'K
* @author treeroot 0T0I<t
* @since 2006-2-2 K1-RJj\L
* @version 1.0 i~*6JB|
*/ ,mz7!c9H^a
public class ShellSort implements SortUtil.Sort{ =5:kV/p
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/* (non-Javadoc) b{X.lz0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rA@|nL{
*/ jR*iA3LDo
public void sort(int[] data) { }r"E\~E
for(int i=data.length/2;i>2;i/=2){ Ok}e|b[D
for(int j=0;j insertSort(data,j,i); UQWv)
} 579t^"ja~
} 7nM<P4\
insertSort(data,0,1); MOHw{Vw(
} i.7$~}
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/** >)mF'w
* @param data KvI/!hl\
* @param j "cbJ{ G1pk
* @param i `iEYq0}
*/ &v9"lR=_k
private void insertSort(int[] data, int start, int inc) { C;9P6^Oz
int temp; "j.Q*Hazg
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); j
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} )0Vj\>
} c)q=il7ef
} H)y_[:[
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} +?5Vuc%
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快速排序: f<R
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package org.rut.util.algorithm.support; D hk$e
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import org.rut.util.algorithm.SortUtil; j-qg{oIJ
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/** ZT,auSX
* @author treeroot PAVlZ}kj
* @since 2006-2-2 +LF=oM<
* @version 1.0 ]n$ v ^
*/ 5cl^:Ua
public class QuickSort implements SortUtil.Sort{ V=+p8nE0
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/* (non-Javadoc) b'xBPTN
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .RS
*/ [T,Df&
public void sort(int[] data) { DYew6B-
quickSort(data,0,data.length-1); dLf
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} TBHd)BhI.
private void quickSort(int[] data,int i,int j){ 0
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int pivotIndex=(i+j)/2; 'SIc2H
file://swap U)3?&9H
SortUtil.swap(data,pivotIndex,j); K5(T7S
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int k=partition(data,i-1,j,data[j]); HhzP Kd
SortUtil.swap(data,k,j); j",*&sy
if((k-i)>1) quickSort(data,i,k-1); 1o)<23q`)
if((j-k)>1) quickSort(data,k+1,j); Ysi@wK-LnF
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} DG3Mcf@5
/** ADMeOdgca
* @param data Q0Gfwl
* @param i c{T)31ldW
* @param j F-$NoEL
* @return 48!F!v,j)x
*/ ]!@!qp@
private int partition(int[] data, int l, int r,int pivot) { J.0&gP V
do{ TJ,?C$3
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); F[fs^Q6S$
SortUtil.swap(data,l,r); Kke
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} LD ,T$"
while(l SortUtil.swap(data,l,r); E,4*a5Fi
return l; }E)t,T>
} s2nZW pIy
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改进后的快速排序: )P.,h&h/
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package org.rut.util.algorithm.support; sr:hRQ27
rj<-sfs
import org.rut.util.algorithm.SortUtil; >waA\C}
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/** -1R7 8(1
* @author treeroot 2%]#rZ
* @since 2006-2-2 `Cu9y+t
* @version 1.0 .;D'
*/ ^brh\M,:@
public class ImprovedQuickSort implements SortUtil.Sort { oK&G
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private static int MAX_STACK_SIZE=4096; TQ5kT?/{
private static int THRESHOLD=10; 5%DHF-W)
/* (non-Javadoc) 8JO(P0aT
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n|PW^kOE/
*/ 9|9/8a6A
public void sort(int[] data) { YDEb MEMd/
int[] stack=new int[MAX_STACK_SIZE]; li~=85 J
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int top=-1; .O
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int pivot; 1ay{uU!EL
int pivotIndex,l,r; L-e6^%eU
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stack[++top]=0; fqol-{F.V
stack[++top]=data.length-1; D6EqJ,~
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while(top>0){ ulk yP
int j=stack[top--]; o* QZf*M
int i=stack[top--]; P{8<U8E
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pivotIndex=(i+j)/2; M!\6Fl{ b
pivot=data[pivotIndex]; J!zL)u|
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SortUtil.swap(data,pivotIndex,j); G:MQ_tfr&
|:d_IB@
file://partition N&u(9Fxn
l=i-1; /IC]}0kkp
r=j; m9Dg%\B
do{ "+BuFhSLf
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); PC)V".W1
SortUtil.swap(data,l,r); PS??wlp7
} ab<7jfFIa
while(l SortUtil.swap(data,l,r); 77G4E ,]
SortUtil.swap(data,l,j); Ude)$PAe%
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if((l-i)>THRESHOLD){ CWnRRZ}r
stack[++top]=i; JZD&u6tB
stack[++top]=l-1; c$)!02
} zM'2opiUY
if((j-l)>THRESHOLD){ gac/%_-HH7
stack[++top]=l+1; 'Ub\8<HfJU
stack[++top]=j; E^m2:J]G
} (DTkK5/%
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} Ly6) ,[q~
file://new InsertSort().sort(data); _Tma1~Gq
insertSort(data); 0O?!fd n
} bj 0-72V
/** W-vEh
* @param data :?7^STc
*/ _[J>GfQd
private void insertSort(int[] data) { /6p7k
int temp; 2>inyn)S
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 4[K6 ZDBU
} 5VlF\-
} DQ_ pLXCC
} d^XRkB:h
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} qTnk>g_oS&
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归并排序: O,7*dniH
H=_k|#/
package org.rut.util.algorithm.support; Bj\ oo+L/
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import org.rut.util.algorithm.SortUtil; qBWt(jY
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/** +*$@ K'VL
* @author treeroot rcjj(
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* @since 2006-2-2 `,FvYA"
* @version 1.0 4iZ7BD
*/ T@DT|lTI
public class MergeSort implements SortUtil.Sort{ `"j _]
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/* (non-Javadoc) (t-JGye>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mRY~)<!4&
*/ n)>nfnh
public void sort(int[] data) { +~M`rR*
int[] temp=new int[data.length]; $:0?"?o);
mergeSort(data,temp,0,data.length-1); <ApzcyC
} _l](dqyuN(
n6
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private void mergeSort(int[] data,int[] temp,int l,int r){ b/'RJQSAc
int mid=(l+r)/2; q,_ 1?A)
if(l==r) return ; 7j\jOklV
mergeSort(data,temp,l,mid); N>+L?C
mergeSort(data,temp,mid+1,r); \-)augq([
for(int i=l;i<=r;i++){ [+4--#&{
temp=data; &V7{J9
} / 9soUt
int i1=l; 8E\6RjM
int i2=mid+1; 2sXX0kq~V
for(int cur=l;cur<=r;cur++){ `n~bDG>
if(i1==mid+1) ngQ]
data[cur]=temp[i2++]; !4!Y~7sI"\
else if(i2>r) \Y}nehxG@
data[cur]=temp[i1++]; /g]m,Y{OI
else if(temp[i1] data[cur]=temp[i1++]; o_ SR
else qi-!iT(fe
data[cur]=temp[i2++]; h8tKYm
} wr;8o*~
} F /% 5 r{
twJ)h :!_y
} ?hwT{h
'-m )fWf
改进后的归并排序: GOhGSV#
bZ*J]1y(.
package org.rut.util.algorithm.support; L;k9}HWpP
06S-3bis
import org.rut.util.algorithm.SortUtil; N6_<[`
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/** I^fKZ^]8P
* @author treeroot QBfsdu<@^
* @since 2006-2-2 'Ijjk`d&c
* @version 1.0 !&OybjQ
*/ Z'L}x6
public class ImprovedMergeSort implements SortUtil.Sort { Y;WHjW(K
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private static final int THRESHOLD = 10; ~Fd<d[b?
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/* rZv5>aEI
* (non-Javadoc) cA{zyq26
* 7ehs+GI
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m;d#*}n\p
*/ 7'9~Kx&+
public void sort(int[] data) { Iz<}>J B
int[] temp=new int[data.length]; IT_Fs|$
mergeSort(data,temp,0,data.length-1); 5%n
}
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private void mergeSort(int[] data, int[] temp, int l, int r) { -hIDL'5u-I
int i, j, k; i''[u
int mid = (l + r) / 2;
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if (l == r) a,sU-w!X'
return; e8"?Qm7 J
if ((mid - l) >= THRESHOLD) %XieKL
mergeSort(data, temp, l, mid); 71ctjU`U2
else ?`%)3gx|
insertSort(data, l, mid - l + 1); vg5;F[e
if ((r - mid) > THRESHOLD) [EETx-
mergeSort(data, temp, mid + 1, r); A12 #v,
else Pe_iA_
insertSort(data, mid + 1, r - mid); A<zSh}eh6
#{8n<sE
for (i = l; i <= mid; i++) { EJrn4QOs
temp = data; JtrLTo
} ,U#$Qb 12
for (j = 1; j <= r - mid; j++) { w1+xlM,,9
temp[r - j + 1] = data[j + mid]; ]"<
`^
} \Q+<G-Kb.
int a = temp[l]; Gmi$Nl!~
int b = temp[r]; oX9rpTi
for (i = l, j = r, k = l; k <= r; k++) { <ZV !fn
if (a < b) { :3# t;
data[k] = temp[i++]; ;-1yG@KG
a = temp; i|5 K4Puu
} else { ^Fr82rJs
data[k] = temp[j--]; W=$d|*$
b = temp[j]; tNI~<#+lg
} p Rn vd|
} pZ,P_?
} `
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C=6 Vd
/** [p+6HF
* @param data e!67Na0X(
* @param l 9
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* @param i NyTv~8A`)
*/ )o<rU[oD]C
private void insertSort(int[] data, int start, int len) { :N<ZO`l?
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 7Xu.z9y
} )r#^{{6[v
} 4Y[uqn[
}
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} _T 5ZL
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堆排序: }-:s9Lt
OA??fb,b
package org.rut.util.algorithm.support; BiQ7r=Dd.
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import org.rut.util.algorithm.SortUtil; 4A_}:nU
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/** ]R8}cbtU
* @author treeroot ROr..-[u
* @since 2006-2-2 Pd@y+|
* @version 1.0 *t'qn
*/ TM8WaH
public class HeapSort implements SortUtil.Sort{ t7#C&B
.r/6BDE"
/* (non-Javadoc) zice0({iJ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fD#VI
*/ piE9qXn
public void sort(int[] data) { I|?zSFa
MaxHeap h=new MaxHeap(); X#$mBRK7
h.init(data); &