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。 t R^f]+Up
插入排序: dWAt#xII
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package org.rut.util.algorithm.support; >jm(2P(R
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import org.rut.util.algorithm.SortUtil; h4Crq Yxa_
/** &f*orM:
* @author treeroot honh'j
* @since 2006-2-2 ,06Sm]4L,
* @version 1.0 3I6ocj[,
*/ o! a,r3
public class InsertSort implements SortUtil.Sort{ odv2 (\
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/* (non-Javadoc) &g`IRz
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .u-a+ac<
*/ $:9t(X)H
public void sort(int[] data) { 2+1ybOwb
int temp; c%H' jB[
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); DT-VxF6 h
} 6^`iuC5
} H 4<"+7
} zakhJ
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} hnj\|6L
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冒泡排序: Jf YgZ\#
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package org.rut.util.algorithm.support; Knwy%5.Z
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import org.rut.util.algorithm.SortUtil; >eJ<-3L;
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/** rXx#<7`
* @author treeroot c(Q@5@1y:
* @since 2006-2-2 e~)[I! n
* @version 1.0 m2]N%Y
*/ YWZ;@,W
public class BubbleSort implements SortUtil.Sort{ ImXYI7PL
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/* (non-Javadoc) <jh4P!\&j
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^<I(
*/ L2H
public void sort(int[] data) { w~Tg?RH:
int temp; xSY"Ru
for(int i=0;i for(int j=data.length-1;j>i;j--){ <PLAAh8
if(data[j] SortUtil.swap(data,j,j-1); )+.=z
} 5`h$^l/
} YT(N][V
} Yy *=@qu>g
} C- .;m
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} E&U_1D9=L<
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选择排序: .}IW!$
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package org.rut.util.algorithm.support; Xa[k=qFo
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import org.rut.util.algorithm.SortUtil; sz9W}&(j
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/** 'ZbWr*bo
* @author treeroot UtQj<18<
* @since 2006-2-2 -.Wcz|
* @version 1.0 q
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*/ Xa`Q;J"h
public class SelectionSort implements SortUtil.Sort { Giyh( DL
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/* *5)UIRd
* (non-Javadoc) bP18w0>,
* (/:m*x*6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;Y7'U rn
*/ *yBVZD|?H
public void sort(int[] data) { V}y]<
int temp; o[Ffa#sE
for (int i = 0; i < data.length; i++) { wJC[[_"3 I
int lowIndex = i; $d<NN2
for (int j = data.length - 1; j > i; j--) { lV\iYX2#
if (data[j] < data[lowIndex]) { X1#Ar)
lowIndex = j; c
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} w;'XqpP$*|
} ,rMf;/[
SortUtil.swap(data,i,lowIndex); uu6 JZp
} E'x"EN
} BUXE
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}
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Shell排序: wgFX')l:
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package org.rut.util.algorithm.support; Y 9$jJ1V
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import org.rut.util.algorithm.SortUtil; 5wue2/gl
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/** Z9vMz3^N
* @author treeroot n]g"H
* @since 2006-2-2 ~4fE`-O
* @version 1.0 a>47k{RSzE
*/ m)A:w.o
public class ShellSort implements SortUtil.Sort{ [*
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/* (non-Javadoc) J
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e]~p:
*/ 71{Q#%5U~
public void sort(int[] data) { |]G%b[
for(int i=data.length/2;i>2;i/=2){ MT!Y!*-5
for(int j=0;j insertSort(data,j,i); uWJJ\
} 3t-STk?
} kL DpZ{
insertSort(data,0,1); OlT8pG5Oa
} d*8*9CpO:
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/** >haihT
* @param data %`i*SF(gV
* @param j l`"?KD
* @param i 9"#C%~=+
*/ p_I^7 $
private void insertSort(int[] data, int start, int inc) { $b`nV4p
int temp; b-ss^UL
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); rd7p$e=i
} S%- kN;
} %SC Jmn2
}
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} 5Npxs&Ea
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快速排序: SnG(/1C8
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package org.rut.util.algorithm.support; 1["i,8zB
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import org.rut.util.algorithm.SortUtil; f-18nF7{
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/** i D 9 */
* @author treeroot .e7tq\k
* @since 2006-2-2 M{ncWq*_j
* @version 1.0 jJIP $
*/ X\`']\l
public class QuickSort implements SortUtil.Sort{ -6+7&.A+
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/* (non-Javadoc) %tP*_d:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WkXgz6 P
*/ eN<L)a:J_
public void sort(int[] data) { t,r]22I,`
quickSort(data,0,data.length-1); <\O+
} VgVDTWs7
private void quickSort(int[] data,int i,int j){ aVu!Qk=Z/
int pivotIndex=(i+j)/2; \2kLj2!
file://swap 9)7$U QY
SortUtil.swap(data,pivotIndex,j); 2VRGTx
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int k=partition(data,i-1,j,data[j]); a
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SortUtil.swap(data,k,j); ]JkEf?;.
if((k-i)>1) quickSort(data,i,k-1); bY#BK_8 :
if((j-k)>1) quickSort(data,k+1,j); }. &ellNQ
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} {A/^;X{N^
/** t~(jA9n
* @param data p
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* @param i 3q73L<f
* @param j 94-BcN
* @return Nbr$G=U
*/ mcQL>7ts
private int partition(int[] data, int l, int r,int pivot) { [uU!\xe
do{ 3q'AgiW
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); kL1<H%1'
SortUtil.swap(data,l,r); _;03R{e*
} rhc+tR
while(l SortUtil.swap(data,l,r); }T4|Kyu?
return l; N#l2wT
} K ~mUO
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} rD=D.1_
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改进后的快速排序: (|BY<Ac3
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package org.rut.util.algorithm.support; T`!R
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import org.rut.util.algorithm.SortUtil; pbAL& }
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/** KzVi:Hm
* @author treeroot WrGA7&!+
* @since 2006-2-2 >SI'Q7k
* @version 1.0 B)Y[~4o
*/ yus3GqPI
public class ImprovedQuickSort implements SortUtil.Sort { Dylm=ZZa
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private static int MAX_STACK_SIZE=4096; X8*g#lO?
private static int THRESHOLD=10; uHI(-!O
/* (non-Javadoc) cp@Fj"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~W21%T+
*/ {T-\BTh&Q
public void sort(int[] data) { !ekByD
int[] stack=new int[MAX_STACK_SIZE]; 9InP2u\&:
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int top=-1; ^^V3nT2rR3
int pivot; ]u5TvI,C
int pivotIndex,l,r; geR
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stack[++top]=0; K} CgFBk
stack[++top]=data.length-1; 'oIE:#b
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while(top>0){ U"7o;q
int j=stack[top--]; eaFkDl
int i=stack[top--]; LWM<[8wJ4
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pivotIndex=(i+j)/2; NIQ}A-b
pivot=data[pivotIndex]; {}$rN@OM$
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SortUtil.swap(data,pivotIndex,j); dCoP
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file://partition iLnW5yy
l=i-1; ^^v3iCT
r=j; Sl8+A+
do{ U:*rlA@_.
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 6>)fNCe`
SortUtil.swap(data,l,r); Bb=r?;zjO
} b;VIR,2
while(l SortUtil.swap(data,l,r); lWc[Q1
SortUtil.swap(data,l,j); gg`{kN^r.a
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if((l-i)>THRESHOLD){ w<B
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stack[++top]=i; %$ya>0?mq
stack[++top]=l-1; q(qm3OxYo
} t#.}0Te7
if((j-l)>THRESHOLD){ (n k g
stack[++top]=l+1; +1wEoU.l2
stack[++top]=j; ""7H;I&
} ={xRNNUj_
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} !ldEy#"X
file://new InsertSort().sort(data); &Z~_BT
insertSort(data); fcdXj_u
} q%G[tXw
/** |y7TYjg6
* @param data gba1R
*/
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private void insertSort(int[] data) { h1q3}-
int temp; )s>|;K{
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); oL~1M=r
} ,IhQ %)l
} L&+k`b
} x9F* $G
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} BW;@Gq@N
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归并排序: }N9PV/a
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package org.rut.util.algorithm.support; pImq<Z
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import org.rut.util.algorithm.SortUtil; jy~hLEt7
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/** _L)LyQD]T
* @author treeroot 5dv|NLl
* @since 2006-2-2 r2f%E:-0G
* @version 1.0 kR1
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*/ =,*/Ph&
public class MergeSort implements SortUtil.Sort{ 6DHZ,gWq
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/* (non-Javadoc) y=9fuGL6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LntRLB'
*/ &u9,|n]O9
public void sort(int[] data) { J_+2]X7n
int[] temp=new int[data.length]; DBy%"/c
mergeSort(data,temp,0,data.length-1); :{eYm|2-
} %d:cC:`
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private void mergeSort(int[] data,int[] temp,int l,int r){ L7lpOy4k
int mid=(l+r)/2; IRLAsb3
if(l==r) return ; @=g{4(zR^
mergeSort(data,temp,l,mid); S9*68l
mergeSort(data,temp,mid+1,r); CNV^,`FX
for(int i=l;i<=r;i++){ }x6)}sz7
temp=data; 'ym Mu}q
} \*5z0A9)5)
int i1=l; tHqa%
int i2=mid+1; n2o)K;wW+
for(int cur=l;cur<=r;cur++){ `+."X1
if(i1==mid+1) @@3NSKA
data[cur]=temp[i2++]; k N* I_#
else if(i2>r) Z1$S(p=)L
data[cur]=temp[i1++]; sOz
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else if(temp[i1] data[cur]=temp[i1++]; ?W dY{;&
else (3K,f4S@
data[cur]=temp[i2++]; o=![+g
} xA;)02
} hw`pi6
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} wKcuIc$
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改进后的归并排序: $<VH~Q<
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package org.rut.util.algorithm.support; ifWQwS/,a
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import org.rut.util.algorithm.SortUtil; 4K~>
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/** D{6BX-Dw.
* @author treeroot @}r
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* @since 2006-2-2 .2|(!a9W
* @version 1.0 FBrh!vQ<
*/ =yRv*C
public class ImprovedMergeSort implements SortUtil.Sort { 0e:j=kd)NH
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private static final int THRESHOLD = 10; 00>knCe6
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/* 5|}u25J
* (non-Javadoc) b!/-9{
* GAs.?JHd
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @eESKg(,
*/ 2H] 7 =j
public void sort(int[] data) { /nh3/[u
int[] temp=new int[data.length]; oBnes*
mergeSort(data,temp,0,data.length-1); wSZMHIW
} ~XXNzz]?
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private void mergeSort(int[] data, int[] temp, int l, int r) { pFBK'NE
int i, j, k; d&ff1(j(
int mid = (l + r) / 2; !F Zg'
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if (l == r) y34 <B)Wy
return; (_N(K`4#W
if ((mid - l) >= THRESHOLD) Xe\v6gbD
mergeSort(data, temp, l, mid);
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else #op0|:/N
insertSort(data, l, mid - l + 1); bx-:aC)]2
if ((r - mid) > THRESHOLD) I2)2'j,B
mergeSort(data, temp, mid + 1, r); 7?vj+1;
else u{sb^cmy
insertSort(data, mid + 1, r - mid); _Db&f}.`
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for (i = l; i <= mid; i++) { va"bw!zXo*
temp = data; 3".#nN
} S`TQWWQo;
for (j = 1; j <= r - mid; j++) { vr6YE;Rs
temp[r - j + 1] = data[j + mid]; L)9Z Op5
} \0e`sOS`L
int a = temp[l]; iMV=R2t 2
int b = temp[r]; hdmKD0
for (i = l, j = r, k = l; k <= r; k++) { HHs!6`R$0c
if (a < b) { ^/}&z