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。 ;Za^).=
插入排序: <'jygZ(
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package org.rut.util.algorithm.support; [B^V{nUBc
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import org.rut.util.algorithm.SortUtil; @7t*X-P.;-
/** -^*8D(j*
* @author treeroot s]HJcgI
* @since 2006-2-2 t Kjk<
* @version 1.0 U ZL-mF:)&
*/ Oiw!d6"Ovq
public class InsertSort implements SortUtil.Sort{ PWV+M@
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/* (non-Javadoc) .B!L+M< [
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3!Mb<W.3
*/ - v=ndJ.
public void sort(int[] data) { 1`1Jn*|TI
int temp; ;p"#ZS7
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); J=H8^4M
} PkOtg[Z
} &!*p>Ns)e
} e63io0g>
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} cr!s q.)s
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冒泡排序: W,%qL6qV
s{fL~}Yz
package org.rut.util.algorithm.support; 5(DnE?}vo
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import org.rut.util.algorithm.SortUtil; I^O`#SA (
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/** K14{c1
* @author treeroot Egl1$,e
* @since 2006-2-2 ?o(Y\YJf
* @version 1.0 UmCIjwk
*/ jG^OF5.
public class BubbleSort implements SortUtil.Sort{ }
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/* (non-Javadoc) Bs-MoT!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AH
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*/ g1q%b%8T
public void sort(int[] data) { )<L?3Jjt5
int temp; -:V2Dsr6;
for(int i=0;i for(int j=data.length-1;j>i;j--){ (<yQA. M
if(data[j] SortUtil.swap(data,j,j-1); 5{#ya2
} gjy:o5{vA*
} 9riKSp:5
} ":^cb =
} [u8JqX
28o!>*
} RTYhgq
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选择排序: oFS)3.
cK2Us+h
package org.rut.util.algorithm.support; :sekMNM
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import org.rut.util.algorithm.SortUtil; y &%2
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/** xW'(]Z7_
* @author treeroot Z65]|
* @since 2006-2-2 t/:]\|]WB
* @version 1.0 3Y=?~!,Jk
*/ w77"?kJ9X
public class SelectionSort implements SortUtil.Sort { MXuiQ;./
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/* )V*V
* (non-Javadoc) (B;rjpK
* Hh.l,Z7i7D
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sMAu*
*/ ,(CIcDJ2U_
public void sort(int[] data) { "npLl]XM
int temp; m-!Uy$yM
for (int i = 0; i < data.length; i++) { `}fwR
int lowIndex = i; mGqT_
for (int j = data.length - 1; j > i; j--) { /CN`U7:E
if (data[j] < data[lowIndex]) { p/inATH
lowIndex = j; j]5bs*G
} /0qLMlL$
} sYb( g'W*'
SortUtil.swap(data,i,lowIndex); QWV12t$v
} o@KK/f
} Q'S"$^~{
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} )R'~{;z }
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Shell排序: V}kQXz"9
P>3
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package org.rut.util.algorithm.support; 2bk~6Osp
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import org.rut.util.algorithm.SortUtil; s!j[Ovtx
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/** 3ud_d>
* @author treeroot yk|<P\
* @since 2006-2-2 jRP9e
* @version 1.0 F"<TV&xf
*/ B#T4m]E/
public class ShellSort implements SortUtil.Sort{ usR:-1{
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/* (non-Javadoc) =
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hc;8Vsa
*/ OF)G2>t
public void sort(int[] data) { 58@YWvAk
for(int i=data.length/2;i>2;i/=2){ \' gb{JO
for(int j=0;j insertSort(data,j,i); ~S, R`wo
} wjm _bEi
} U- UD27
insertSort(data,0,1); MM*B.y~TxZ
} fvDt_g9 oI
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/** M ;\iL?,
* @param data dC7YVs_,#
* @param j (HW!!xM
* @param i j<-#a^jb
*/ >tUi ;!cQ
private void insertSort(int[] data, int start, int inc) { tl 0_Sd
int temp; WIe7>wkC
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); *Kpk1
} 3@qy}Nm
} toq/G,N Q
} KT 3W>/#E
D5o[z:V7"
} xJphG
+VJS/
快速排序: ,buSU~c_Q
V`/E$a1&
package org.rut.util.algorithm.support; w\"~*(M
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import org.rut.util.algorithm.SortUtil; zTgY=fuz
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/** ',7LVT7
* @author treeroot aG"j9A~ &
* @since 2006-2-2 r8.`W\SKX
* @version 1.0 jL
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*/ o!]muO*Rm
public class QuickSort implements SortUtil.Sort{ B]KR *
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/* (non-Javadoc) y*F !k{P
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fH-fEMyW
*/ [>2iz
public void sort(int[] data) { R[C+?qux
quickSort(data,0,data.length-1); (yx^zW7
} jW,b"[
private void quickSort(int[] data,int i,int j){ mY1I{'.
int pivotIndex=(i+j)/2; *^ZJ&.
file://swap 4YV0v,z
SortUtil.swap(data,pivotIndex,j); YiO3.+H
6'{/Ote
int k=partition(data,i-1,j,data[j]); TpAE 9S
SortUtil.swap(data,k,j); Ulf'gD4e
if((k-i)>1) quickSort(data,i,k-1); Dias!$g
if((j-k)>1) quickSort(data,k+1,j); w#XD4kwQG
R]h3a:ic
} `rLcJcW
/** ag_*Z\
* @param data uPT2ga ]
* @param i _Gu;= H,~&
* @param j |rgp(;iO
* @return _VUG!?_D$5
*/ ]<3n;*8k?
private int partition(int[] data, int l, int r,int pivot) { kF;N}O2?{
do{ _o52#Q4
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); F@tfbDO?
SortUtil.swap(data,l,r); V0l"tr@
} &E]<dmR
while(l SortUtil.swap(data,l,r); 5K:'VX
return l; Ybk ydc
} #n7F7X
r4isn^g
} :>|dE%/e$
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改进后的快速排序: ~Ydm"G
f7SMO-3a
package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; DFXHD,o
8\X-]Gh\^
/** ]vflx^<?
* @author treeroot mDXG~*1
* @since 2006-2-2 _UA|0a!-
* @version 1.0 4
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*/ i91 =h
public class ImprovedQuickSort implements SortUtil.Sort { ~m'8<B5+
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private static int MAX_STACK_SIZE=4096; &z]x\4#,
private static int THRESHOLD=10; H%b c.c
/* (non-Javadoc) L>Y3t1=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~n~j2OE
*/ 2<T/N
public void sort(int[] data) { (e_z*o)\T
int[] stack=new int[MAX_STACK_SIZE]; [v+5|twxpU
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int top=-1; ^@C/2RX!
int pivot; aXyFpGdb9
int pivotIndex,l,r; O'Q,;s`uC
>B<#,G
stack[++top]=0; b['v0x
stack[++top]=data.length-1; noso* K7
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while(top>0){ |vw],r6
int j=stack[top--]; =.qX u+
int i=stack[top--]; -@tj0OHg
Sy/Z}H
pivotIndex=(i+j)/2; *3KSOcQ
pivot=data[pivotIndex]; =fy\W=c
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SortUtil.swap(data,pivotIndex,j); Zq~Rkx
;Nw)zS
file://partition p'0X>>$
l=i-1; KO\-|#3y>
r=j; ~:
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do{ Ou4 `#7FR
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); %>y`VN
D
SortUtil.swap(data,l,r); '
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} #N$\d4q9
while(l SortUtil.swap(data,l,r); m^~5Xr"
SortUtil.swap(data,l,j); (HXKa][T
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if((l-i)>THRESHOLD){ gq]@*C
stack[++top]=i;
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stack[++top]=l-1; !|l7b2NEz-
} ^`[<%.
if((j-l)>THRESHOLD){ (5;nA'
stack[++top]=l+1; sPMICIv|
stack[++top]=j; '5b0 K1$"
} EOZ 6F-':
~Zn|(
} AmZW=n2^
file://new InsertSort().sort(data); {;|pcx\L6~
insertSort(data); ULhXyItL
} BIS .,
/** Fi'ZId
* @param data
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*/ D~bx'Wr+
private void insertSort(int[] data) { ,c-*/{3
int temp; psse^rFg
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); P+Gz'
} 764eXh
} /1p5KVTKv
} 6<9}>Wkf
<5"&]!
.
} ^We}i
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归并排序: { P,hH~!
PhPe7^
package org.rut.util.algorithm.support; cs7^#/3<
2$MoKOx8$
import org.rut.util.algorithm.SortUtil; bIlNA )g
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/** 1KY0hAx
* @author treeroot Y<jX[ET!
* @since 2006-2-2 =''WA:,=h
* @version 1.0 Ir-QD!!<
*/ XdmpfUR,13
public class MergeSort implements SortUtil.Sort{ P*B@it
a~J!G:(
/* (non-Javadoc) 5}Id[%.x
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;5.<M<PH
*/ ?PS?_+E\L
public void sort(int[] data) { Lq$ig8V:O7
int[] temp=new int[data.length]; yMu G? x+
mergeSort(data,temp,0,data.length-1); (7N!Jvg9
} 71>,tq
7_P33l8y
private void mergeSort(int[] data,int[] temp,int l,int r){ {8qcM8
int mid=(l+r)/2; 1Jdx#K
if(l==r) return ; >kxRsiKV
mergeSort(data,temp,l,mid); YXZP-=fB>i
mergeSort(data,temp,mid+1,r); g4Q' Fub+I
for(int i=l;i<=r;i++){ P(FlU]q
temp=data; 5|~nX8>
} 6K )K%a,9
int i1=l; AE+BrN
+"2
int i2=mid+1; H2H[ DVKv
for(int cur=l;cur<=r;cur++){ XI|k,Ko<
if(i1==mid+1) Rnoz[1y?0
data[cur]=temp[i2++]; c ~~4eia)
else if(i2>r) ke!
data[cur]=temp[i1++]; S~ Z<-@S
else if(temp[i1] data[cur]=temp[i1++]; )/vom6y*
else !h4A7KBYG
data[cur]=temp[i2++]; ,Jh#$mil
} 9l"=]7~%
} 7y3WV95Z\
=.CiKV$E
} 9a=>gEF],@
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改进后的归并排序: ~;]kqYIJ
=+K?@;?
package org.rut.util.algorithm.support; ^"p. 3Hy
}:{9!RMO
import org.rut.util.algorithm.SortUtil; ]Ml
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/** EPH
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* @author treeroot Bm,Vu 1]t
* @since 2006-2-2 e ><0crb
* @version 1.0 ^+CWo@.
*/ {| hg3R~A
public class ImprovedMergeSort implements SortUtil.Sort { nIr`T^c9c
q4Wr$T$gs=
private static final int THRESHOLD = 10; %cg| KB"l
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/* vG'#5%,|
* (non-Javadoc) M;Pry3J
* .MG83Si
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8U(o@1PT
*/ ` 6*]c n#(
public void sort(int[] data) { B~ i
int[] temp=new int[data.length]; $l"%o9ICG
mergeSort(data,temp,0,data.length-1); ^~-YS-.J#,
} R'`'q1=R
&K60n6q{aQ
private void mergeSort(int[] data, int[] temp, int l, int r) { zs Q|LwQ
int i, j, k; K$Vu[!l`
int mid = (l + r) / 2; *|g[Mn
if (l == r) 2[Lv_<i|
return; *l{epum;
if ((mid - l) >= THRESHOLD) Nj3iZD|
mergeSort(data, temp, l, mid); u%e~a]
else -W1p=od
insertSort(data, l, mid - l + 1); AK,'KO%{=
if ((r - mid) > THRESHOLD) ~?Ky{jah:^
mergeSort(data, temp, mid + 1, r); cjPXrDl{\
else z,ERq,g+L
insertSort(data, mid + 1, r - mid); x1#>"z7
7~QI4'e
for (i = l; i <= mid; i++) { ur8+k4]\"
temp = data; 5Y^"&h[/
} :K]7(y7>
for (j = 1; j <= r - mid; j++) { 96<oX:#
temp[r - j + 1] = data[j + mid]; t!3N|`x
} u-,}ug|
int a = temp[l]; lTqlQ<`V
int b = temp[r]; DbH;DcV7
for (i = l, j = r, k = l; k <= r; k++) { eIalcBY
if (a < b) { /Yp#`}Ii
data[k] = temp[i++]; lP`BKc,
a = temp; \alV #>J5
} else { ]}N01yw|s
data[k] = temp[j--]; )h]#:,pm
b = temp[j]; =?.oH|&\h
} uStAZ~b\
} Dho6N]86r
} 3._
ep
6 Ln~b <I
/** 4\&Y;upy+
* @param data F!EiF&[\J
* @param l QcQ%A%VIV
* @param i |A'I!Jm
*/ kJ FWk
private void insertSort(int[] data, int start, int len) { /9G72AD!
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Lcpe*C x-
} 9% T"W
} i^%$ydg
} (^
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} I*
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rMx Iujx
堆排序: ulIEx~qP
5F~l;zT
package org.rut.util.algorithm.support; ":Tm6Nj
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import org.rut.util.algorithm.SortUtil; '1ySBl1>
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/** Vz/w.%_g
* @author treeroot _=s9o/Cn]
* @since 2006-2-2 -Y/i
h(I^
* @version 1.0 O+=%Mz(l
*/ 4kM/`g6?,q
public class HeapSort implements SortUtil.Sort{ !B%em%Tv
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/* (non-Javadoc) ?x #K:a?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~< bpdI0
*/ H\ejW@<;h
public void sort(int[] data) { mfQ#n!{ZH
MaxHeap h=new MaxHeap(); 0Xh_.PF
h.init(data); Xh;.T=/E|
for(int i=0;i h.remove(); >%U+G0Fq
System.arraycopy(h.queue,1,data,0,data.length); \s5Uvws
} |g 3:+&
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private static class MaxHeap{ ja_8n["z
]WDmx$"&e
void init(int[] data){ ^b+>r
this.queue=new int[data.length+1]; RtMI[
for(int i=0;i queue[++size]=data; v<!S_7h
fixUp(size); 29RP$$gR
} DQXUh#t\(]
} ?8V.iHJk
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private int size=0; ux&"TkEp
W%g*sc*+
private int[] queue; I1E9E$m5\<
.Az36wD
public int get() { E?XaU~cpc
return queue[1];
QPx5`{nN
} %vJHr!x
46 A sD
public void remove() { SraZxuPg>
SortUtil.swap(queue,1,size--); qLDj\%~(
fixDown(1); elCYH9W^
} !'jq.RawP
file://fixdown ^U_T<x8{
private void fixDown(int k) { !,[#,oy;
int j; yXR1NYg
while ((j = k << 1) <= size) { `Y?VQ~ci>
if (j < size %26amp;%26amp; queue[j] j++; 6^"QABc
if (queue[k]>queue[j]) file://不用交换 w==BSH[
break; 4!Js="
SortUtil.swap(queue,j,k); %hnBpz
k = j; r<+C,h;aww
} k5S;G"iJ
} 2!/Kt
O)i^
private void fixUp(int k) { wGArR7r
while (k > 1) { LlQsc{Ddf
int j = k >> 1; !2LX+*;
if (queue[j]>queue[k]) cJ96{+
break; p`Pa;=L
SortUtil.swap(queue,j,k); ~$HB}/
k = j; Y_'ERqQ
} n N<N~
} t/iI!}
b&z#ZY
} lYx_8x2
Zo3!Hs ZA
} ;l@94)@0
uks75W!}U
SortUtil: h:%,>I%{
d/7fJ8y8
package org.rut.util.algorithm; MgJ6{xzz
7=l~fKu
import org.rut.util.algorithm.support.BubbleSort; 2Xt4Rqk $
import org.rut.util.algorithm.support.HeapSort; u;`]U$Qq9
import org.rut.util.algorithm.support.ImprovedMergeSort; OpUfK4U)
import org.rut.util.algorithm.support.ImprovedQuickSort; bWswF<y-
import org.rut.util.algorithm.support.InsertSort; )/;KxaKt
import org.rut.util.algorithm.support.MergeSort; p/h\QG1
import org.rut.util.algorithm.support.QuickSort; Y
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import org.rut.util.algorithm.support.SelectionSort; ?*fa5=ql
import org.rut.util.algorithm.support.ShellSort; Ww]$zd-bo
Lzh8-d=HQ
/** xE1?)
* @author treeroot bwsKdh
* @since 2006-2-2 mk>; 3m*
* @version 1.0 RaJTya^
*/ v ccH(T
public class SortUtil { t%=7v)IOE
public final static int INSERT = 1; nh} Xu~#_
public final static int BUBBLE = 2; INg0[Lpc
public final static int SELECTION = 3; sU_K^=6*
public final static int SHELL = 4; f@OH~4FG
public final static int QUICK = 5;
w$}q`k'
public final static int IMPROVED_QUICK = 6; 2@|`Ugjptl
public final static int MERGE = 7; ]EiM~n
public final static int IMPROVED_MERGE = 8; iiPVqU%
public final static int HEAP = 9; X{-4w([
s5VK
public static void sort(int[] data) { NdXHpq;
sort(data, IMPROVED_QUICK); 0]DOiA
} 8?yIixhw
private static String[] name={ .hT>a<
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" O =Z}DGa+
}; .a%6A#<X
;2f=d_/x
private static Sort[] impl=new Sort[]{ VeA@HC`?"
new InsertSort(), ^)AECn
new BubbleSort(), V*p[6{U0
new SelectionSort(), n ay\)
new ShellSort(), HsCL%$k
new QuickSort(), voa)V1A/]
new ImprovedQuickSort(), |9E:S
new MergeSort(), 8em'7hR9
new ImprovedMergeSort(), 5nG\J
g7
new HeapSort() "Lp.*o
}; W5R/Ub@g
m}]{Y'i]R
public static String toString(int algorithm){ &;BhL%)}
return name[algorithm-1]; QiPqN$n
} _}l(i1o,/
|+cz\+
public static void sort(int[] data, int algorithm) { t~+M>Fjm?d
impl[algorithm-1].sort(data); <y6`8J7:
} PQHztS"
km%r{
public static interface Sort { >F$9&s&
public void sort(int[] data); QQJGqM3a2
} s9?mX@>h
{ 53FR
public static void swap(int[] data, int i, int j) { H=/1d.p
int temp = data; ]iV]7g8:
data = data[j]; <5zR-UA>
data[j] = temp; oC&}lp)q
} omfX2Oa2
} A*h8 o9M