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。 6<6_W#
插入排序: )2hoO_l:
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package org.rut.util.algorithm.support; dy'?@Lj;
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import org.rut.util.algorithm.SortUtil; jz0\F,s
/** &Gl&m@-j
* @author treeroot _FgeE`X
* @since 2006-2-2 djM=QafB:C
* @version 1.0 "yk%/:G+
*/ |+''d
public class InsertSort implements SortUtil.Sort{ ,|/$|$'
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/* (non-Javadoc) o~ed0>D-LS
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "f+2_8%s+
*/ G}*B`m
public void sort(int[] data) { :4d7%q
int temp; 6;DPGx
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); &n
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} ]y
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} J>Ha$1}u/
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} rG6/h'!|
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冒泡排序: $Tza<nA
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package org.rut.util.algorithm.support; 7\lb+^$
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import org.rut.util.algorithm.SortUtil; WBIS
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/** 4{pa`o3
* @author treeroot NM ]/OKs'H
* @since 2006-2-2 lB-7.
* @version 1.0 n66_#X
*/ =G :H)i
public class BubbleSort implements SortUtil.Sort{ v;7u"9t
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/* (non-Javadoc) DFMWgBL
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u a-p^X`w
*/ y C#{nUdw
public void sort(int[] data) { 0Og =H79<
int temp; Heu@{t.[!D
for(int i=0;i for(int j=data.length-1;j>i;j--){ oxZ(qfjS
if(data[j] SortUtil.swap(data,j,j-1); ~c"c9s+o
} y-mmc}B>N
} xC(PH?_
} ^8)d8?}
} *k -UQLJ
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} $9/r*@bu8d
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选择排序: B=7L+6
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package org.rut.util.algorithm.support; 9 )qx0
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import org.rut.util.algorithm.SortUtil; FgxQ}VvlH
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/** p*Cbe\
* @author treeroot l3,|r QD
* @since 2006-2-2 3 0Z;}<)9
* @version 1.0 P%c<0y"O:>
*/ 9^n
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public class SelectionSort implements SortUtil.Sort { pFh2@O
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/* R\^tr
* (non-Javadoc) [(XKqiSV
* X%sc:V
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4Bz~_
*/ U\N`[k.F
public void sort(int[] data) { =0Mmxd&o=M
int temp; %Vq@WF
for (int i = 0; i < data.length; i++) { :BS`Q/<w
int lowIndex = i; '@FKgy;B)-
for (int j = data.length - 1; j > i; j--) { w[iQndu
if (data[j] < data[lowIndex]) { WG,{:|!E
lowIndex = j; IaB
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} #X+)
} 6m9Z5:xG
SortUtil.swap(data,i,lowIndex); /D12N'VaE
} fg2}~02n
} A+'j@c\&!
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} y=CemJ[~
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Shell排序: iiu\_ a=0b
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package org.rut.util.algorithm.support; Kxq~,g=t
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import org.rut.util.algorithm.SortUtil; L(L;z'3y
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/** :\ S3[(FV
* @author treeroot iH2|w
* @since 2006-2-2 {pqm&PB04
* @version 1.0 8r5j~Df
*/ WE3l*7<@
public class ShellSort implements SortUtil.Sort{ <H.Ml>q:r
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/* (non-Javadoc) s<myZ T$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M:A7=rO~
*/ 8p5u1 ;2
public void sort(int[] data) { <B)lV'!Bd
for(int i=data.length/2;i>2;i/=2){ QS[%`-dR2
for(int j=0;j insertSort(data,j,i); *N 't ;
} 5%9&
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} ^;'3(m=
insertSort(data,0,1); n`6vM4rM)
} v^vEaB
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/** .gB#g{5+J
* @param data bAgKOfT
* @param j q
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* @param i GYBM]mW^ W
*/ {YkW5zC(L
private void insertSort(int[] data, int start, int inc) { [bAv|;
int temp; m2_B(-
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); W6Hiqu+
} (t <Um
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} 8u>E(Vmpu
} nD!^0?
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} IgVxWh#
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快速排序:
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package org.rut.util.algorithm.support; M$w^g8F27H
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import org.rut.util.algorithm.SortUtil; DY1o!thz)
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/** "UE'dWz
* @author treeroot !=ZbBUJF
* @since 2006-2-2 WHU&9N
* @version 1.0 .; :[sv)
*/ )%*uMuF
public class QuickSort implements SortUtil.Sort{
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/* (non-Javadoc) mFT[[Z#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IuPwFf)
*/ HZR~r:_
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public void sort(int[] data) { \ ddbqg?`
quickSort(data,0,data.length-1); *&LVn)@[`
} Up`zVN59.
private void quickSort(int[] data,int i,int j){ ]U]{5AA6
int pivotIndex=(i+j)/2; gg5`\}
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SortUtil.swap(data,pivotIndex,j); C5F}*]E[y
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int k=partition(data,i-1,j,data[j]); $BCqz! 4K
SortUtil.swap(data,k,j); Si!W@Jm
if((k-i)>1) quickSort(data,i,k-1); w+ bMDp
if((j-k)>1) quickSort(data,k+1,j); ]kR 93
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} ,_p_p^Ar\4
/** aiea&aJ
* @param data zf#V89!]C"
* @param i j&ddpS(s
* @param j 4u A;--j
* @return g {wDI7"<q
*/ JeuW/:Wv
private int partition(int[] data, int l, int r,int pivot) { &`{%0r[UD#
do{ 87y$=eZ
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Jo_h?{"L{
SortUtil.swap(data,l,r); ?:~ `?
} wC;N*0Th
while(l SortUtil.swap(data,l,r); ]e 81O#t3
return l; R:zjEhH)
} 8z\WyDz
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} q
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改进后的快速排序: I
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package org.rut.util.algorithm.support; {V,rWg
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import org.rut.util.algorithm.SortUtil; U_Id6J]8
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/** jO3Z2/#
* @author treeroot Q lql(*
* @since 2006-2-2 $GPenQ~},
* @version 1.0 -fn["R]
*/ ++BVn[ 1
public class ImprovedQuickSort implements SortUtil.Sort { ybcQ,e
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private static int MAX_STACK_SIZE=4096; >i-cR4=LL{
private static int THRESHOLD=10; Ggsfr;m\`
/* (non-Javadoc) qK#\k@E
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R2-OT5Ej
*/ yD$rls:v<
public void sort(int[] data) { "3W!p+W
int[] stack=new int[MAX_STACK_SIZE]; P8piXG
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int top=-1; 3@_je)s
int pivot; VWaI!bK
int pivotIndex,l,r; UII R$,XB
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stack[++top]=0; JmtU>2z\
stack[++top]=data.length-1; w*OZ1|
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while(top>0){ i` n,{{x&4
int j=stack[top--]; rV54-K;`0
int i=stack[top--]; pu=Q;E_f[
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pivotIndex=(i+j)/2; 8it|yK.G@&
pivot=data[pivotIndex]; W:ih#YW_F
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SortUtil.swap(data,pivotIndex,j); ehoDWO]S
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file://partition Nj@k|_1
l=i-1; (G*--+Gn
r=j; gQCkoQi:j
do{ uL1e?
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); fr4#<6,
SortUtil.swap(data,l,r); Yy@;U]R
} a{mtG{Wc
while(l SortUtil.swap(data,l,r); VX2KE@
SortUtil.swap(data,l,j); j_H{_Ug
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if((l-i)>THRESHOLD){ ^8a,gA8.
stack[++top]=i; ck){N?y
stack[++top]=l-1; ?sfA/9"
} Nc,"wA
if((j-l)>THRESHOLD){ 2kp.Ljt@
stack[++top]=l+1; kVCSFF*
stack[++top]=j; |[)t4A"}
} =hH>]$J[
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} I QS|
file://new InsertSort().sort(data);
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insertSort(data); ={o>g'
} s=!
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/** 'p80X^g
* @param data 7%c9 nY
*/ #KF:(2
private void insertSort(int[] data) { &HNJ'
int temp; wWKC.N
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); }5z6b>EI9a
} - /]ro8V$
} .9#4qoM'
} xa[<k>r3
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} hc4<`W{
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归并排序: RFU(wek
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package org.rut.util.algorithm.support; 1Thr74M
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import org.rut.util.algorithm.SortUtil; J^R))R=
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/** $]<C C `
* @author treeroot Mc#uWmc 7
* @since 2006-2-2 lbZ,?wm
* @version 1.0 dE7 kd=.o
*/ -v'7;L0K
public class MergeSort implements SortUtil.Sort{ B;r U
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/* (non-Javadoc) 8 P.t
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 17I{_C
*/ @Y 1iEL%\y
public void sort(int[] data) { _r0oOp E
int[] temp=new int[data.length]; &^Zo}F2V
mergeSort(data,temp,0,data.length-1); D}XyT/8G3
} b8P/9D7K?
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private void mergeSort(int[] data,int[] temp,int l,int r){ #I|Vyufw
int mid=(l+r)/2; LYhgBG,
if(l==r) return ; W$O^IC
mergeSort(data,temp,l,mid); %*wJODtB|
mergeSort(data,temp,mid+1,r); H$>D_WeJ
for(int i=l;i<=r;i++){ hZ Gr/5f
temp=data; ^>gRK*,
} s3HwBA
int i1=l; ^3B{|cqf
int i2=mid+1; &PI}o
for(int cur=l;cur<=r;cur++){ &?IOrHSv!
if(i1==mid+1) .+t{o[
data[cur]=temp[i2++]; ^W5rL@h_
else if(i2>r) bo '
data[cur]=temp[i1++]; ~O;!y%
else if(temp[i1] data[cur]=temp[i1++]; b#(SDNo6
else [yM{A<\L
data[cur]=temp[i2++]; c[}h( jkP
} C'4u+raq
} B$1nq#@
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} Wp/!;
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改进后的归并排序: R/R[r> 1)6
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package org.rut.util.algorithm.support; i;;CU9`E2q
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import org.rut.util.algorithm.SortUtil; JryDbGc8
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/** /6B!&b2f
* @author treeroot @a#qq`b;
* @since 2006-2-2 VQ5T$,&
* @version 1.0 v|t_kNX;v*
*/ ge)g ?IP4
public class ImprovedMergeSort implements SortUtil.Sort { -l8n0P1+
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private static final int THRESHOLD = 10; s
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/* B;XFPQ#b
* (non-Javadoc) x.qn$?3V]
* ?`V%[~4_I
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '31pb9@fH
*/ jv>l6)
public void sort(int[] data) { E@^`B9;Q7
int[] temp=new int[data.length]; yx"xbCc#
mergeSort(data,temp,0,data.length-1); )28Jz6.I
} q4@n
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private void mergeSort(int[] data, int[] temp, int l, int r) { uNZJNrV%
int i, j, k; wvvMesX<L
int mid = (l + r) / 2; ]IMBRZQqb
if (l == r) fqZqPcT0
return; hAi50q;z
if ((mid - l) >= THRESHOLD) 3GUO
mergeSort(data, temp, l, mid); h.>6>5$n
else /1:`?% ,2
insertSort(data, l, mid - l + 1); hPF9y@lh
if ((r - mid) > THRESHOLD) ugcWFB5|
mergeSort(data, temp, mid + 1, r); A1e| Y
else XKN`{h-@
insertSort(data, mid + 1, r - mid); 6pDb5@QjTy
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for (i = l; i <= mid; i++) { L3lf2 8W
temp = data; jCqs^`-
} _;3xG0+
for (j = 1; j <= r - mid; j++) { 6DqV1'
temp[r - j + 1] = data[j + mid]; &MsnQP
} V^B'T]s
int a = temp[l]; U4qp?g+:
int b = temp[r]; Z2~;u[0a[
for (i = l, j = r, k = l; k <= r; k++) { ,pE{N&p9
if (a < b) { Ar7vEa81
data[k] = temp[i++]; L^3~gZ
a = temp; ,u7:l
} else { !q=ej^(S
data[k] = temp[j--]; |0:<Z(
b = temp[j]; jjL(=n<J<"
} /*!K4)$-*2
} w^e<p~i!^E
} 9Slx.9f
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/** A+w51Q
* @param data !:t}8
* @param l /> c F
* @param i 8X!^ 2B}J
*/ 'hfQ4EN
private void insertSort(int[] data, int start, int len) { Q4\EI=4P]
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); QyQ&xgS
} <iVn!P
} fiqeXE?E
} S{gB~W
} ax0RtqtR&
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堆排序: ^_
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package org.rut.util.algorithm.support; NBZFIFO<
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import org.rut.util.algorithm.SortUtil; 3Xyu`zS&
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/** { \9vW; '
* @author treeroot TbbtD"b?
* @since 2006-2-2 Cfqgu;m
* @version 1.0 XcB!9AIO
*/ PB00\&6H
public class HeapSort implements SortUtil.Sort{ 'bVDm m).
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