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。 KsZ@kTs
插入排序: 8moUK3w
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package org.rut.util.algorithm.support; 7ZL,p:f
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import org.rut.util.algorithm.SortUtil; `^?}s-H+
/** )Uc$t${en
* @author treeroot !."Izz/
* @since 2006-2-2 *xEI
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* @version 1.0 CX1L(Y[
*/ .i1jFwOd|G
public class InsertSort implements SortUtil.Sort{ -$'~;O3s
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/* (non-Javadoc) B?$S~5
}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U+(Z#b(Q
*/ (N)r#"FV
public void sort(int[] data) { 1'(_>S5CG
int temp; .`:oP&9r
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); f+Pg1Q0zI
} ZD$-V3e`
} ^vYVl{$bT
} 3WQRN_
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} MtMvpHk
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冒泡排序: 3L'en
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package org.rut.util.algorithm.support; #|)JD@;Q
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import org.rut.util.algorithm.SortUtil; 3?a0
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/** Oex{:dO "F
* @author treeroot |!?2OTY
* @since 2006-2-2 eD>-`'7<
* @version 1.0 } S'I
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*/ U>e3_td3,
public class BubbleSort implements SortUtil.Sort{ 6n2Vx1b
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/* (non-Javadoc) 2hjre3"?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :DS2zA
*/ R[mH35D/
public void sort(int[] data) { }CB=c]p
int temp; $O;N/N:m
for(int i=0;i for(int j=data.length-1;j>i;j--){ T%M1[<"Q
if(data[j] SortUtil.swap(data,j,j-1); C:|q'"F
} G%V=idU*"
} Xq=!"E
} z&>9
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} X67C;H+
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} hP'~
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选择排序: *7:u-}c!
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package org.rut.util.algorithm.support; 'sT}DX(7M
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import org.rut.util.algorithm.SortUtil; \NvC
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/** 3Hb .ZLE#
* @author treeroot >/*?4
* @since 2006-2-2 CSd9\V
* @version 1.0 pq/FLYiv
*/ Thht_3_C,f
public class SelectionSort implements SortUtil.Sort { eR#gG^o8
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/* a<a&63
* (non-Javadoc) E.7AbHph0
* r{Qs9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nN_94
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*/ }`+^|1
public void sort(int[] data) { Ee$"O6*!
int temp; [0**&.obz
for (int i = 0; i < data.length; i++) { S<2CG)K[
int lowIndex = i; .,d$%lN
for (int j = data.length - 1; j > i; j--) { ^a:vJ)WB7
if (data[j] < data[lowIndex]) { e4>L@7
lowIndex = j; 7Ap~7)z[
} XNkQk0i;g&
} vV:MS O'r
SortUtil.swap(data,i,lowIndex); WwCK K
} qH{8n`
} -Y
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} s)o,Fi
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Shell排序: ^2Fs)19R
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package org.rut.util.algorithm.support; }Uqa8&
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import org.rut.util.algorithm.SortUtil; KL:6P-3
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/** ^J#*n;OQ3A
* @author treeroot Ht=6P)
* @since 2006-2-2 ?hry=I(7r
* @version 1.0 k^'d@1z;C
*/ tLoD"/z
public class ShellSort implements SortUtil.Sort{ :#Ex3H7
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/* (non-Javadoc) Z CQt1;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k_En_\c?p2
*/ >H=Q$gI
public void sort(int[] data) { `DWi4y7
for(int i=data.length/2;i>2;i/=2){ 5 vu_D^Q
for(int j=0;j insertSort(data,j,i); vxzf[
} d<|lLNS
} 1K*f4BnDr~
insertSort(data,0,1); 5u
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} 3wa<,^kqy
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/** ]\os`At
* @param data :>er^\
* @param j \0^r J1*
* @param i t7*H8
*/ ?V\9,BTb)
private void insertSort(int[] data, int start, int inc) { KHc/x8^9
int temp; "[".3V
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); }G,SqpcG
} ~\@<8@N2a6
} :}3qZX
} iuU3*yyn
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} /F8\%l+
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快速排序: W:+2We @
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package org.rut.util.algorithm.support; _'v }=:X
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import org.rut.util.algorithm.SortUtil; qeK
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/** Z.Y;[Y
* @author treeroot {KpH|i
* @since 2006-2-2 utm+\/
* @version 1.0 .'NO~
*/ (fk, 80
public class QuickSort implements SortUtil.Sort{ 2
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/* (non-Javadoc) !ovZ>,1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !EmR (x
*/ \dxW44sM
public void sort(int[] data) { pD}VB6=
quickSort(data,0,data.length-1); .5[LQR
} 5(MZ%-~l
private void quickSort(int[] data,int i,int j){ [;V1y`/K1
int pivotIndex=(i+j)/2; Er)_[^)
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file://swap [nPzhXs
SortUtil.swap(data,pivotIndex,j); FOUs=
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int k=partition(data,i-1,j,data[j]); =Q=&Ucf_
SortUtil.swap(data,k,j); B,m$ur#$
if((k-i)>1) quickSort(data,i,k-1); 3EW f|6RI
if((j-k)>1) quickSort(data,k+1,j); TLL[F;uZ
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} Cp~3Jm3
/** IIt^e#s&
* @param data 4M<JfD
* @param i 7^t(RNq
* @param j neY=:9
* @return zs]/Y2
*/ -JQg ~1
private int partition(int[] data, int l, int r,int pivot) { <sWcS; x
do{ @tv];t
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); m5;[,He
SortUtil.swap(data,l,r); #+ lq7HJ1
} j+B5m:ExfI
while(l SortUtil.swap(data,l,r); 6quWO2x
return l; 5t5S{aCDr
} [TfV2j* e
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} ':R3._tw\
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改进后的快速排序: 7Ae,|k
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package org.rut.util.algorithm.support; n.qxxzEN
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import org.rut.util.algorithm.SortUtil; C=_-p"O#
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/** ^(m6g &$(
* @author treeroot [?f.0q
* @since 2006-2-2 F+y`4>x
* @version 1.0 -x%`Wv@L
*/ }v$=mLy
public class ImprovedQuickSort implements SortUtil.Sort { NUNn[c
, ZP3F+XKb
private static int MAX_STACK_SIZE=4096; O\8|niW|
private static int THRESHOLD=10; I&NpN~AU
/* (non-Javadoc) IweK!,:>dN
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .bBQhf.&"
*/ $}nUK~$GSv
public void sort(int[] data) { 'St= izhd
int[] stack=new int[MAX_STACK_SIZE]; y>cmKE
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int top=-1; 3w:Z4]J
int pivot; 0|>
int pivotIndex,l,r; [.Wt,zrE
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stack[++top]=0; .fh?=B[o#
stack[++top]=data.length-1; I/b8
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while(top>0){ K,,@',
int j=stack[top--]; ZM^;%(
int i=stack[top--]; Q|H cg|
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pivotIndex=(i+j)/2; E+c3KqM
pivot=data[pivotIndex]; Z
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SortUtil.swap(data,pivotIndex,j); Di"9 M(6vf
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file://partition wukos5
l=i-1; NlEWm8u
r=j; _5S$mc8K0
do{ m^x\@!N:(
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); q.b4m 'J
SortUtil.swap(data,l,r); PXu<4VF
} iai4$Y(%
while(l SortUtil.swap(data,l,r); u,,WD
SortUtil.swap(data,l,j); MH8%-UV
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if((l-i)>THRESHOLD){ <J}9.k
stack[++top]=i; |QTqa~~B
stack[++top]=l-1; v*fc5"3eO
} ~_j%nJ
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if((j-l)>THRESHOLD){ c%Cae3;
stack[++top]=l+1; zUtf&Ih
stack[++top]=j; 7>@/*S{X
} vG_v89t!ex
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} K/d&c]
file://new InsertSort().sort(data); ^W[`##,{Od
insertSort(data); NE%yv,B
} C(*@-Npf[
/** S!!\!w>N
* @param data f=O>\
*/ g+r{>x
private void insertSort(int[] data) { e27CbA{_w
int temp; 3v>,c>b([
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); *]{I\rX
} 78J.~v/
} <\>ak7m
} `"mK\M
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} Afhx`J1KO
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归并排序: @%G"i:HZ&
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package org.rut.util.algorithm.support; d4h(F,K7V
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import org.rut.util.algorithm.SortUtil; YIUmCx0a
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/** i{[H3p8
* @author treeroot E/P53CD
* @since 2006-2-2 zp-~'kIJ
* @version 1.0 |Pl{Oo+
*/ [Q_|6Di
public class MergeSort implements SortUtil.Sort{ /~huTKA}
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/* (non-Javadoc) 7:q-NzE\6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Or)c*.|\
*/ +Qb/:xQu
public void sort(int[] data) { 'p+QFT>Ca
int[] temp=new int[data.length]; PxD}j
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mergeSort(data,temp,0,data.length-1); 7.rZ%1N
} J3S+| x h~
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private void mergeSort(int[] data,int[] temp,int l,int r){ |8{iIvi/
int mid=(l+r)/2; 5nqdY*
if(l==r) return ; PlRs-% d
mergeSort(data,temp,l,mid); D c.W vUM
mergeSort(data,temp,mid+1,r); j=% -b]
for(int i=l;i<=r;i++){ k#NMD4(%O
temp=data; cD@lorj
} pdqa)>$
int i1=l; _H<OfAO
int i2=mid+1; J$*["y`+
for(int cur=l;cur<=r;cur++){ }eFUw
if(i1==mid+1) ?o5#Ve$-X
data[cur]=temp[i2++]; *LdH/C.LIf
else if(i2>r) \#7%%>p=O'
data[cur]=temp[i1++]; pytfsVM
else if(temp[i1] data[cur]=temp[i1++]; TFNU+
else '^3pF2lIw
data[cur]=temp[i2++]; q ? TI,
} Jd6Q 9~z#
} >Mw =}g@P
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} > BCX%<&
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改进后的归并排序: [7w_.(f#
&YP>"<
package org.rut.util.algorithm.support; 0MGK3o)
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import org.rut.util.algorithm.SortUtil; *`'%tp"'+
,8?*U]}
/** IVODR
* @author treeroot Cs=i9.-A
* @since 2006-2-2 Qh%vh;|^
* @version 1.0 q[A3$y(
*/ Jn&>Z? @
public class ImprovedMergeSort implements SortUtil.Sort { 8>;o MM
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private static final int THRESHOLD = 10; "fd=(&
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/* D ,^
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* (non-Javadoc) O'U,|A
* y s6"Q[B
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iGNKf|8{
*/ 9gayu<J
public void sort(int[] data) { IFoN<<7/2$
int[] temp=new int[data.length]; oioN0EuDk
mergeSort(data,temp,0,data.length-1); 8k'em/M~
} v~QZO4['
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private void mergeSort(int[] data, int[] temp, int l, int r) { Q[tz)99~
int i, j, k; i.,B
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int mid = (l + r) / 2; 0LuY"(LR
if (l == r) -z1o~~
return; V t;&2v
if ((mid - l) >= THRESHOLD) j'cCX[i
mergeSort(data, temp, l, mid); a
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else -ouL4
insertSort(data, l, mid - l + 1); o%Q2.
if ((r - mid) > THRESHOLD) Ll48)P{+}V
mergeSort(data, temp, mid + 1, r); o7B+f
else c{ (%+
insertSort(data, mid + 1, r - mid); rn*VL(Yd(
<WkLwP3^
for (i = l; i <= mid; i++) { 4yy
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temp = data; MRu+:Y=K
} S@-X?Lu
for (j = 1; j <= r - mid; j++) { YP97D n
temp[r - j + 1] = data[j + mid]; ]HT>-Ba;{h
} P^+>QJ1
int a = temp[l]; dU n#'<g5
int b = temp[r]; ( h,F{7
for (i = l, j = r, k = l; k <= r; k++) { @},k\Is
if (a < b) { #2,L)E\G8e
data[k] = temp[i++]; ;yrcH+I$_
a = temp; ]^%3Y
} else { NPab M(<`
data[k] = temp[j--]; X~!?t}
b = temp[j]; G&Sg.<hn
} !\v3bOi&
} =5F49
} c~;.m<yrf
\LXNdE2B
/** EJY:C9W
* @param data @Q5^Q'!
* @param l q\Z1-sl~s
* @param i i/B"d,=<
*/ EatDT*!
private void insertSort(int[] data, int start, int len) { vUA`V\
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ]z NL+]1_
} xSZw,
} kp"cHJNx
} -7Wmq[L/
} '.yr8
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堆排序: ypVr"fWB
e@YR/I8my
package org.rut.util.algorithm.support; dq&d>f1
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import org.rut.util.algorithm.SortUtil; _:
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/** ),|bP`V
* @author treeroot _95tgJ y
* @since 2006-2-2 ${3OQG
* @version 1.0 L.[2l Q
*/ VtFh1FDI\
public class HeapSort implements SortUtil.Sort{ r?*?iw2g
d~%Rnic6*
/* (non-Javadoc) bN)?szh&Y