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。 eK`n5Z&Y\
插入排序: dB< \X.
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package org.rut.util.algorithm.support; 2D&tDX<
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import org.rut.util.algorithm.SortUtil; ]xV7)/b5G
/** 6`F_js.a
* @author treeroot S1zV.]
* @since 2006-2-2 t3G%}d?
* @version 1.0 \'j%q\Bl;
*/ sL[,J[AN;
public class InsertSort implements SortUtil.Sort{ [ bE9Y;
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/* (non-Javadoc) Ks9"U^bPs
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3u-j`7
*/ Vk8:;Hj
public void sort(int[] data) { DKYrh-MN
int temp; BDc*N]m}B1
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); kXv
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} f`H}Y!W(
} 1+Ja4`o,iS
} wGAN"K:e
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} fs7JA=?:
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冒泡排序: jbfMTb4
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package org.rut.util.algorithm.support; 8`9!ocrM
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import org.rut.util.algorithm.SortUtil;
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/** X~%Wg*Hm
* @author treeroot r'k-*I
* @since 2006-2-2 P g7W:L7
* @version 1.0 *#dXW\8qu
*/ Fg`r:,(a
public class BubbleSort implements SortUtil.Sort{ nBZqhtr
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/* (non-Javadoc) $OmcEd
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) My
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*/ K|E}Ni
public void sort(int[] data) { xw]Zo<F
int temp; ;sCX_`t0E
for(int i=0;i for(int j=data.length-1;j>i;j--){ Wvmf[!V;
if(data[j] SortUtil.swap(data,j,j-1); Vad(PS0
} <fWho%eOK
} 86.!sQ8b
} )xlNj$(x5n
} J(g!>Sp!p
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} [t,grdw
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选择排序: <`~]P$
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package org.rut.util.algorithm.support; #](ML:!
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import org.rut.util.algorithm.SortUtil; U~!97,|ic
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/** 9O~1o?ni
* @author treeroot h9&<-k
* @since 2006-2-2 $1#|<|
* @version 1.0 ^~eT#Y8
*/ ZO
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public class SelectionSort implements SortUtil.Sort { -L</,>p
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/* 2m/1:5
* (non-Javadoc) w~&bpCB!
* 73 Tg{~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wF$8#=
*/ _f{'&YhUU
public void sort(int[] data) { E!C~*l]wJx
int temp; C
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for (int i = 0; i < data.length; i++) { H /*^$>0Uo
int lowIndex = i; x]Q+M2g?
for (int j = data.length - 1; j > i; j--) { {P&{+`sov
if (data[j] < data[lowIndex]) { @@-n/9>vs
lowIndex = j; sf<S#;aYqn
} M ~zA
} !ow:P8K?
SortUtil.swap(data,i,lowIndex); ZX'q-JUv f
} ?
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} %JF^@\E!|
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} UyTsUkY
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Shell排序: IW?).%F
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package org.rut.util.algorithm.support; DvB!-|ek
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import org.rut.util.algorithm.SortUtil; ;h<(vc3@f
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/** LmWZ43Z"@
* @author treeroot Kkcb'aDR
* @since 2006-2-2 m!Cvd9X=
* @version 1.0 }Go?j#
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*/ d,8L-pT$FM
public class ShellSort implements SortUtil.Sort{ ' ^E7T'v%
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/* (non-Javadoc) X'Q?Mh
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]Wr2I M
*/ Z}#'.y\ f
public void sort(int[] data) { zisf8x7^W
for(int i=data.length/2;i>2;i/=2){ c%+/TO
for(int j=0;j insertSort(data,j,i); C~-x637/
} q!iTDg*$
} { RH&mu
insertSort(data,0,1); [U]^:sV)
} QxS]6hA
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/** ndg1E;>
* @param data SQ'\K d=
* @param j VzD LG LH
* @param i J_NY:B
*/ '2Q[g0VR
private void insertSort(int[] data, int start, int inc) { u_H=Xm)9
int temp; Z*/{^ zsE
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); !l NCuR/T
} |ecK~+
} VaP9&tWXj
} nilis-Bk_
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} Q\Wh]=}
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快速排序: la4
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package org.rut.util.algorithm.support; *$e1Bv6
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import org.rut.util.algorithm.SortUtil; Ey|{yUmU+
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/** >AK9F.
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* @author treeroot )j,Y(V$P
* @since 2006-2-2 de=){.7Y
* @version 1.0 oZ,J{I!L
*/ B7x(<!B
public class QuickSort implements SortUtil.Sort{ 5PY4PT=G
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/* (non-Javadoc) 'Em3;`/C*+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7N:3
*/ TOT#l6yqdd
public void sort(int[] data) { u,RR|/@
quickSort(data,0,data.length-1); -al\*XDz
} :j2?v(jT_l
private void quickSort(int[] data,int i,int j){ 21k,{FB'?
int pivotIndex=(i+j)/2; =/5^/vwgY
file://swap GFGW'}w-
SortUtil.swap(data,pivotIndex,j); i+q tL3
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int k=partition(data,i-1,j,data[j]); 4Jn+Ot.,d
SortUtil.swap(data,k,j); [>$?/DM
if((k-i)>1) quickSort(data,i,k-1); b :WA}x V
if((j-k)>1) quickSort(data,k+1,j); k3(q!~a:.}
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/** .;\uh$c
* @param data ($nQmr;t
* @param i h*
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* @param j MJ"@
* @return CdZ. T/x
*/ C5Vlqc;
private int partition(int[] data, int l, int r,int pivot) { E3hXs6P
do{ ^(kmF UV,Z
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); XX7zm_>+
SortUtil.swap(data,l,r); ZH)Jq^^RI
} ^HhV?Iqg
while(l SortUtil.swap(data,l,r); n\ 'PNB
return l; bL`>#M_^
} ;n q"jm
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} ,(i`gH{D
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改进后的快速排序: 8vkCmV
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package org.rut.util.algorithm.support; 'yo-`nNFD
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import org.rut.util.algorithm.SortUtil; WA6reZ
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/** 3xk-D &"
* @author treeroot Spu>
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* @since 2006-2-2 s6F0&L;N&
* @version 1.0 M3U?\g
*/ (`&SV$m
public class ImprovedQuickSort implements SortUtil.Sort { hG~HV{6
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private static int MAX_STACK_SIZE=4096; HV&i! M@T
private static int THRESHOLD=10; U5
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/* (non-Javadoc) cG"wj$'w
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *(s0X[-
*/ 2FN E ;y(
public void sort(int[] data) { $D='NzE/
int[] stack=new int[MAX_STACK_SIZE]; *ESi~7;#
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int top=-1; .sjv"D"
int pivot; @;G%7&ps
int pivotIndex,l,r; -lqD
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stack[++top]=0; `>4"i+NFF8
stack[++top]=data.length-1; e?7y$H-
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;
while(top>0){ pocXQEg$]
int j=stack[top--]; XU<XK9EA
int i=stack[top--]; 2:RFPK
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pivotIndex=(i+j)/2; -d9L
pivot=data[pivotIndex]; ]eUD3WUe>q
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SortUtil.swap(data,pivotIndex,j);
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file://partition 4/V;g%0uN;
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do{ )<%CI#s#
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ^-LnO%h?
SortUtil.swap(data,l,r); Z;z,dw
} 27i-B\r
while(l SortUtil.swap(data,l,r); NFy V02.
SortUtil.swap(data,l,j); (}5};v
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if((l-i)>THRESHOLD){ t7yvd7
stack[++top]=i; `z`=!1
stack[++top]=l-1; ay
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} Y(] W+k<
if((j-l)>THRESHOLD){ Q,M,^_
stack[++top]=l+1; a ]:xsJ~
stack[++top]=j; SQ*%d.1
} FJqg,
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} 8>G5VhCm~o
file://new InsertSort().sort(data); 6-~ZOMlV
insertSort(data); x:i,l:x
} \x<,Ma=D
/** M+M ;@3
* @param data 37biRXqLH
*/ aTfc>A;
private void insertSort(int[] data) {
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int temp; ~1XC5.*-
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1);
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} z0x^HDAeC
} ^?_MIS`4N
} h@]{j_$u
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} o^/ fr&,9
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归并排序: 2s=zT5
uP$i2Cy
package org.rut.util.algorithm.support; x[fp7*TiG
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import org.rut.util.algorithm.SortUtil; wz@[rMf
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/** @=}NMoNH
* @author treeroot w#_7,*6]
* @since 2006-2-2 q Y!LzKM0
* @version 1.0 W4qnXD1n
*/ ^$mCF%e8H
public class MergeSort implements SortUtil.Sort{ 4`'Rm/)
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/* (non-Javadoc) -7XaS&.4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O2"@09:
*/ |9F-ZH~6
public void sort(int[] data) { ZFh[xg'0
int[] temp=new int[data.length]; aK(e%Ed t"
mergeSort(data,temp,0,data.length-1); xb"e'Zh
} QpiDBJCL
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private void mergeSort(int[] data,int[] temp,int l,int r){ ,$aqF<+;
int mid=(l+r)/2; T24$lhM
if(l==r) return ; 1NG[
mergeSort(data,temp,l,mid); FI[]#
mergeSort(data,temp,mid+1,r); ,Y#f0
for(int i=l;i<=r;i++){ $C,`^n'
temp=data; i-#D c(9
} yRDtPK"E-
int i1=l; >s!k"s,
int i2=mid+1; nv(6NV
for(int cur=l;cur<=r;cur++){ +;)Xu}
if(i1==mid+1) "rc QS
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data[cur]=temp[i2++]; I~E&::,
else if(i2>r) -<AGCiLz
data[cur]=temp[i1++]; FW)~e*@8=
else if(temp[i1] data[cur]=temp[i1++]; :T>OJ"p
else L^PBcfg
data[cur]=temp[i2++]; 5E 9R+N
} +QOK]NJN
} jwuSne
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} ooCfr?E
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改进后的归并排序: -G#m'W&
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package org.rut.util.algorithm.support; rmFcSolt,f
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import org.rut.util.algorithm.SortUtil; bPkz= ^-
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/** U-$nwji
* @author treeroot " YOl6n
* @since 2006-2-2 -i_XP]b&
* @version 1.0 |+JC'b?,
*/ &m]jYvRc
public class ImprovedMergeSort implements SortUtil.Sort { Q4Qf/q;U
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private static final int THRESHOLD = 10; _EP~PW#J
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/* wbk$(P'gN
* (non-Javadoc) obv_?i1
* R((KAl]dL
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aWP9i&
*/ p;D
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public void sort(int[] data) { OB^j
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int[] temp=new int[data.length]; MUCes3YJH
mergeSort(data,temp,0,data.length-1); (\wV)c9
} [M:<!QXw
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private void mergeSort(int[] data, int[] temp, int l, int r) { e5"5 U7
int i, j, k; G,1g~h%I$
int mid = (l + r) / 2; 8%a
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if (l == r) wSdiF-ue
return; O*n@!ye
if ((mid - l) >= THRESHOLD) l%?()]y
mergeSort(data, temp, l, mid); 3{Zd<JYg4-
else LY#V)f
insertSort(data, l, mid - l + 1); _?K,Jc8j.
if ((r - mid) > THRESHOLD) %WX^']p
mergeSort(data, temp, mid + 1, r); u?>8`]r
else 7xO~v23oe
insertSort(data, mid + 1, r - mid); FF|M7/[~
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for (i = l; i <= mid; i++) { =+[`9
temp = data; F[)tg#}@G
} s"2+H}u
for (j = 1; j <= r - mid; j++) { Um*&S.y
temp[r - j + 1] = data[j + mid]; S0LaQ<9.
} -3m!970
int a = temp[l]; t8.3
int b = temp[r]; |eJR3o
for (i = l, j = r, k = l; k <= r; k++) { I SdB5Va
if (a < b) { Im]6-#(9\|
data[k] = temp[i++]; m}>Q#IVZ
a = temp; 'TA
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} else { i.KRw6
data[k] = temp[j--]; k\g:uIsv$
b = temp[j]; ZG~d<kM&8s
} 5{v uN)K3
} 0h{&k7T<7
} GNHW bC6_m
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/** g'2;///
* @param data (rq(y$N
* @param l j6L (U~%
* @param i ~]n=TEJ>
*/ "3_GFq
private void insertSort(int[] data, int start, int len) { !\^W *nQ>l
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); $H&:R&Us
} m3&