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。 Z=9dMND
插入排序: _i@x@:_l
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package org.rut.util.algorithm.support; "6V_/u5M;=
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import org.rut.util.algorithm.SortUtil; E^syrEz
/** %FS;>;i?
* @author treeroot "k>bUe|RG
* @since 2006-2-2 SJ(9rhB5*.
* @version 1.0 d| \#?W&
*/ F*<Ws;j
public class InsertSort implements SortUtil.Sort{ +{ab1))/
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/* (non-Javadoc) -A@U0=o
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =g2\CIlVU6
*/ tJ>d4A;8x
public void sort(int[] data) { Kq6qXc\x
int temp; }85#[~m'
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); a}D&$yz2
} AzX(~Qc
} *2:Yf7rvI+
} \[E-:
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} 3mA/Nu_
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冒泡排序: nK:`e9ES
-AeHY'T
package org.rut.util.algorithm.support; qid1b
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import org.rut.util.algorithm.SortUtil; Sl~C0eO
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/** -9i+@%{/
* @author treeroot s @3zx
* @since 2006-2-2 JgZdS-~
* @version 1.0 Ua!Odju*w
*/ 6KBHRt
public class BubbleSort implements SortUtil.Sort{ 'Sk6U]E~
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/* (non-Javadoc) )xbqQW7%0+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n]Ebwznt-
*/ vKV{
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public void sort(int[] data) { 1 pYsjo~
int temp; ~l@%=/m
for(int i=0;i for(int j=data.length-1;j>i;j--){ _"`/^L`Q?
if(data[j] SortUtil.swap(data,j,j-1); akY6D]M
} JG1LS$p^
} 8^NE=)cb7w
} EID(M.G
} 0$(jBnE
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} sd7Y6?_C
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选择排序: Zj5NWzj
X
7YSuB9{M
package org.rut.util.algorithm.support; I[vME"
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import org.rut.util.algorithm.SortUtil; + >Fv*lux
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/** $::51#^Wg
* @author treeroot "otr+.{`*
* @since 2006-2-2 Gu<W:n[
* @version 1.0 (u$!\fE-et
*/ ggzAU6J
public class SelectionSort implements SortUtil.Sort { Gf!t< =T
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/* ei(|5h
* (non-Javadoc) ,(zcl$A[
* lb=2*dFJ1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4j2~"K
*/ #zh6=.,7
public void sort(int[] data) { ^!XU+e+:0
int temp; r< N-A?a
for (int i = 0; i < data.length; i++) { w?*'vF_2:#
int lowIndex = i; 3ytx"=B%
for (int j = data.length - 1; j > i; j--) { m3 x!*9h
if (data[j] < data[lowIndex]) { ' h0\4eu
lowIndex = j; <5C=i:6%
} w/)e2CH
} f4qS OVv
SortUtil.swap(data,i,lowIndex); @*AYm-k
} >:(6{}b
} ~M|NzK_9
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} HQjxJd5P
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Shell排序: exGhkt~
Wl@0TUK
package org.rut.util.algorithm.support; #w[q.+A
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import org.rut.util.algorithm.SortUtil; LL6ON
}
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/** 4IH0un
* @author treeroot =2GP^vh
* @since 2006-2-2 wt3Z?Pb
* @version 1.0 6jQ&dN{=qB
*/ .F=<r-0
public class ShellSort implements SortUtil.Sort{ Hj-<{#,
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/* (non-Javadoc) ]-+.lR%vd9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kfG 65aa>_
*/ JCQx8;V%I
public void sort(int[] data) { I=3B
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for(int i=data.length/2;i>2;i/=2){ I*`=[nR
for(int j=0;j insertSort(data,j,i); .j]OO/,
} 3e!a>Gl*
} 9 Le/'o vq
insertSort(data,0,1); 2!"\;/
} HCn]#
: Oz7R:
/** Oujlm|
* @param data 1' @lg*^9
* @param j AU${0#WV_
* @param i >(1_Dn\
*/ .,BD D PFB
private void insertSort(int[] data, int start, int inc) { /^es0$Co.
int temp; !<UEq`2
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ""U?#<}GD
} 6=`m
} `mHOgS>|
} \p=W4W/
JCU3\39}
} h(N9RJ}
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快速排序: BafzQ'
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package org.rut.util.algorithm.support; >stVsFdV)
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import org.rut.util.algorithm.SortUtil; c#4L*$ViF
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/** "8iyMP%8
* @author treeroot ba)YbP[
* @since 2006-2-2 > Qbc(}w
* @version 1.0 SpTORR8
*/ nluyEK
public class QuickSort implements SortUtil.Sort{ 4>wIF }\
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/* (non-Javadoc) xvz5\s|b
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4+ ?ZTc(
*/ QGCdeE$K
public void sort(int[] data) { -L4G WJ~.-
quickSort(data,0,data.length-1); BQJ`vIa
} E{]|jPdr
private void quickSort(int[] data,int i,int j){ o:Os_NaD
int pivotIndex=(i+j)/2; U"Ob@$ROFy
file://swap [#*?uu+
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SortUtil.swap(data,pivotIndex,j); i11GW
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int k=partition(data,i-1,j,data[j]); 5\kZgXWIh
SortUtil.swap(data,k,j); MHT,rqG
if((k-i)>1) quickSort(data,i,k-1); E["t Ccg
if((j-k)>1) quickSort(data,k+1,j); P)j9\ muc
;F]|HD9
} HtXBaIl\
/** *Wo$$T
* @param data /$.vHt5nt
* @param i '<W,-i
* @param j hv8[_p`>
* @return 7te!>gUW
*/ _(kwD^x6O{
private int partition(int[] data, int l, int r,int pivot) { {S:3
FI
do{ OVo
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); C05{,w?
SortUtil.swap(data,l,r); I%b:Z
} C`T5d
while(l SortUtil.swap(data,l,r); 0B:{4Lsn&
return l; |iJZC
}
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} V5@[7ncVf
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改进后的快速排序: o[r6sz:
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package org.rut.util.algorithm.support; &EJ,k'7$
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import org.rut.util.algorithm.SortUtil; }fMFQA)
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/** _,1kcDu
* @author treeroot Y'H/
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* @since 2006-2-2 <21^{ yt1
* @version 1.0 5$Q`P',*Ua
*/ 0Lz56e'j
public class ImprovedQuickSort implements SortUtil.Sort { 1xV1#'@[Jd
m]}"FMH$
private static int MAX_STACK_SIZE=4096; b/}0
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private static int THRESHOLD=10;
%!h+
/* (non-Javadoc) > 5:e1a?9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nln[V$
*/ @gGuV$Mw
public void sort(int[] data) { R*G>)YH
int[] stack=new int[MAX_STACK_SIZE]; J` --O(8Ml
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int top=-1; E1w XG
int pivot; cDyC&}:f
int pivotIndex,l,r; VOOThdR
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stack[++top]=0; PH &ms
stack[++top]=data.length-1; YVp0}m
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while(top>0){ *n?:)(
int j=stack[top--]; b>._ r&.
int i=stack[top--]; ZP/=R<<
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pivotIndex=(i+j)/2; :!FwF65
pivot=data[pivotIndex]; <"% h1{V
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SortUtil.swap(data,pivotIndex,j); iPYlTV
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file://partition 5R
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l=i-1; D+PUi!
r=j; (2)9TpE;
do{ DdBrJ x
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ?+L6o C.;
SortUtil.swap(data,l,r); ..mz!:Zs0
} bZfJG^3
while(l SortUtil.swap(data,l,r); q8]k]:r
SortUtil.swap(data,l,j); swbD q
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if((l-i)>THRESHOLD){ D8XXm lo
stack[++top]=i; f#b[KB^Z,2
stack[++top]=l-1; {Vu:yh\<
} zH4#\d
if((j-l)>THRESHOLD){ 2@rc&Tx
stack[++top]=l+1; j'n= Xh
stack[++top]=j; (E[hl
} [} 3Y1t{G
biK.HL\V
} 8;rS"!qM
file://new InsertSort().sort(data); ,r4af<
insertSort(data); xbA2R4|
} \C|06Bs$
/** XE\bZc
* @param data Z^S!w;eu
*/ A'2:(m@{T
private void insertSort(int[] data) { H;E{Fnarv
int temp; 5~QB.m,>
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); |05LHwb>
} a}\JA`5;)Z
} x #g,l2_!
} d0az#Yg!
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} u{ /gjv
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归并排序: 3iTjM>+>
>sq9c/}X
package org.rut.util.algorithm.support; zFIKB9NUn
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import org.rut.util.algorithm.SortUtil; u:$x,Q
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/** lhU# /}Z
* @author treeroot :QNEA3Q
* @since 2006-2-2 DGnswN%n1
* @version 1.0 rO GJ%|%(
*/ HS7!O
public class MergeSort implements SortUtil.Sort{ Lif mYn[
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/* (non-Javadoc) ';%g^!lM
a
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5YasD6l
*/ ^9i^Ci9
public void sort(int[] data) { A
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int[] temp=new int[data.length]; g@L4G?hLn
mergeSort(data,temp,0,data.length-1); (@Bm2gH
} [B[ J%?NS
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private void mergeSort(int[] data,int[] temp,int l,int r){ Gmb57z&:
int mid=(l+r)/2; $O#h4L_
if(l==r) return ; [*(MI 9WM
mergeSort(data,temp,l,mid); `}bUf epMJ
mergeSort(data,temp,mid+1,r); <~3 aaO
for(int i=l;i<=r;i++){ Jc+U$h4
temp=data; Y'P8 `$
} Smp+}-3O
int i1=l; b#M<b.R)
int i2=mid+1; ?cJ$=
for(int cur=l;cur<=r;cur++){ fjb2-K
if(i1==mid+1) M\%{!Wzo8
data[cur]=temp[i2++]; 7]Egu D4
else if(i2>r) {2nXItso
data[cur]=temp[i1++]; I6\3wU~).
else if(temp[i1] data[cur]=temp[i1++]; km^AX:r1
else `C1LR,J
data[cur]=temp[i2++]; d7&PbITN
} M3''xrpC
} ,ZSuo4
La!PGZ{
} E*%{Nn
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改进后的归并排序: ru&RL
HFV
Kk,->q<1
package org.rut.util.algorithm.support; ;9~z_orNQZ
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import org.rut.util.algorithm.SortUtil; rk~/^(!
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/** kahv1s-
* @author treeroot zb<+x(0y"
* @since 2006-2-2 bY<" $);s
* @version 1.0 B}Qo8i7
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*/ >
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public class ImprovedMergeSort implements SortUtil.Sort { S$#Awen"@
*n47.(a2i
private static final int THRESHOLD = 10; YcI]_[
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/* A-~)7-
* (non-Javadoc) #Ky0` n
* eD}Ga4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T&c[m!}X|t
*/ ,ToED
public void sort(int[] data) { 3S,pd0;
int[] temp=new int[data.length]; }"T:z{n
mergeSort(data,temp,0,data.length-1); B4b UcYk
} 1^,r S
<Z5prunov
private void mergeSort(int[] data, int[] temp, int l, int r) { V;z?m)ur
int i, j, k; C$5v:Fk
int mid = (l + r) / 2; YP6+o#==
if (l == r) V6!oe^a7'
return; U!Lws#\X
if ((mid - l) >= THRESHOLD) ":Q70*xSm
mergeSort(data, temp, l, mid); qj|GAGrQ2
else %!q(zql
insertSort(data, l, mid - l + 1); [AU1JO`\"
if ((r - mid) > THRESHOLD) <
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mergeSort(data, temp, mid + 1, r); i{,>2KVC|
else '
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insertSort(data, mid + 1, r - mid); ^a(q7ZfY
b/ynCf8X
for (i = l; i <= mid; i++) { &O'yhAP] j
temp = data; # WxH
} 8FMP)N4+
for (j = 1; j <= r - mid; j++) { Y8P
temp[r - j + 1] = data[j + mid]; NO<myN+N
} %jkd}D
int a = temp[l]; .-r
1.'.A
int b = temp[r]; gt
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for (i = l, j = r, k = l; k <= r; k++) { snK/,lm.
if (a < b) { |[qI2-e l?
data[k] = temp[i++]; EH[ ?*>+s
a = temp; Ug9o/I@}C
} else { Q:-/@$&i
data[k] = temp[j--]; zR/ATm]9
b = temp[j]; :ortyCB:H
} \UiuJ+
} wU=(_S,c
} TEYbB=.
SsaF><{5R
/** o~~_ >V)W
* @param data UqAvFCy
* @param l ='mqfGRi>
* @param i 2^juLXc|R
*/ _x:K%1_[
private void insertSort(int[] data, int start, int len) { \'p)kDf
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); jHFdDw|N`
} `=.{i}V
} F|"NJ*o}
} 5ogbse"
} h rZ\ O?j
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堆排序: vzVl2
Obw uyhjQ
package org.rut.util.algorithm.support; _{A($/~c?
wp@c;gK7
import org.rut.util.algorithm.SortUtil; u2DsjaL
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/** DO0["O74
* @author treeroot Z,!Rj7wZ
* @since 2006-2-2 {yJ{DU?%Y
* @version 1.0 79i>@u%
*/ O/GD[9$i
public class HeapSort implements SortUtil.Sort{ jx-W$@
-
@
/* (non-Javadoc) {Xl
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G;tIhq[$Vb
*/ r*kk/$,2
public void sort(int[] data) { HC$_p,9OV
MaxHeap h=new MaxHeap(); MRiETd"
h.init(data); R^K<u#>K
for(int i=0;i h.remove(); }F^c*xt[
System.arraycopy(h.queue,1,data,0,data.length); c|I{U[(U
} bd%/dr
u[cbRn,W
private static class MaxHeap{ >SccoI
NjMo"1d
void init(int[] data){ K}Aaflq
this.queue=new int[data.length+1]; Um*{~=;u
for(int i=0;i queue[++size]=data; Ha;^U/0|
fixUp(size); >WDb89kC=
} (/Nw
} }bHdU]$}
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private int size=0; 03#r F@e
7|H !( a'
private int[] queue; B:Msn)C~
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public int get() { =7Nm=5@
return queue[1]; YsDn?p D@
} .\i9}ye
?-*_v//g
public void remove() { 1!,lI?j,
SortUtil.swap(queue,1,size--); YMJ?t"
fixDown(1); t R*JM$T
} 5.idC-\
file://fixdown N=-hXgX^
private void fixDown(int k) { 8r+R~{
int j; `y
m^0x8
while ((j = k << 1) <= size) { qksN {t
if (j < size %26amp;%26amp; queue[j] j++; Pgb<;c:4
if (queue[k]>queue[j]) file://不用交换 % &{>oEQ
break; t[7YMk
SortUtil.swap(queue,j,k); spgY &OI;
k = j; [O9(sWL'
} ~[l2"@
} C$Ldz=d
private void fixUp(int k) { = R; 0Ed&b
while (k > 1) { fokOjTE
int j = k >> 1; <?QY\wyikz
if (queue[j]>queue[k]) rAk*~OK
break; E WOn"
SortUtil.swap(queue,j,k); mJ[LmQ<:
k = j; +#n5w8T)M
} %<:?{<~wH9
} JYs*1<
]#TL~u[
} ]MRE^Je\h
lzw3 x
} }yC ve
% ;09J
SortUtil: lD.PNwM
Hk(w\
package org.rut.util.algorithm; vD^^0-Pk6
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import org.rut.util.algorithm.support.BubbleSort; )%f]`<