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。 co-dq\P
插入排序: H1^m>4ll9
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package org.rut.util.algorithm.support; |^!
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import org.rut.util.algorithm.SortUtil; R-\a3q
/** ICxj$b
* @author treeroot F-SD4a
* @since 2006-2-2 Jg:%|g
* @version 1.0 *W&}}iL
*/ zFpM\{`[g
public class InsertSort implements SortUtil.Sort{ ~[H+,+XLY+
:
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/* (non-Javadoc) ytkV"^1^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )!tqock*v
*/ h|Z%b_a
public void sort(int[] data) { g E#4 3
int temp; WVa#nU^
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); KbP( ;
} 07FS|>DM'Z
} T|fmO<e*n
} %40uw3
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} byrK``f
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冒泡排序: 5OS|Vp||b
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package org.rut.util.algorithm.support; 45+w)Vf!
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import org.rut.util.algorithm.SortUtil; HC[)):S*
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/** iT;~0XU7F
* @author treeroot ~lSdWUk>
* @since 2006-2-2 NrTK+6 z
* @version 1.0 `~ ,
*/ =:~%$5[[
public class BubbleSort implements SortUtil.Sort{ .PHz
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/* (non-Javadoc) XC NM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @2HNYW)
*/ /-_<RQ
public void sort(int[] data) { oI/jGyY;
int temp; P*M$^p
for(int i=0;i for(int j=data.length-1;j>i;j--){ b7nER]R
if(data[j] SortUtil.swap(data,j,j-1); ?~g X7{>
} kCoTz"Z-
} $:
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} UCv9G/$
} `fA|])3T
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} 1`;,_>8
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选择排序: }RT#V8oc
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package org.rut.util.algorithm.support; {8YNmxF#
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import org.rut.util.algorithm.SortUtil; $cUTe
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/** >#jfZ5t
* @author treeroot 9sR?aW^$,/
* @since 2006-2-2 YH%aPsi
* @version 1.0 No1*~EQ
*/ U<|h4'(@L
public class SelectionSort implements SortUtil.Sort { /1Q
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/* f T&>L
* (non-Javadoc) !x, ;&
* Z6Owxqfht
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LZ"yMnhOf
*/ _Coh11
public void sort(int[] data) { Ki"o0u
int temp; _ zh>q4M
for (int i = 0; i < data.length; i++) { qg(rG5kD@
int lowIndex = i; ~gjREl,+D#
for (int j = data.length - 1; j > i; j--) { e=]>TeqG0
if (data[j] < data[lowIndex]) { |6mDooTy
lowIndex = j; -X)KY_Xn@/
} =h#3D?b0n
} y].vll8R
SortUtil.swap(data,i,lowIndex); )7H s
}
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} *t,J4c
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} &?-LL{W{
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Shell排序: x@@U&.1_A
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package org.rut.util.algorithm.support; ~sI$xX!
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import org.rut.util.algorithm.SortUtil;
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/** }Z|uLXaz
* @author treeroot ~}c`r 4
* @since 2006-2-2 OYWW<N+R2
* @version 1.0 rY
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*/ 0NN{2"M$p
public class ShellSort implements SortUtil.Sort{ tPT\uD#t
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/* (non-Javadoc) y5X HJUTu
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <By6%<JTn
*/ o4)^U t+
public void sort(int[] data) { m]bv2S+5 y
for(int i=data.length/2;i>2;i/=2){ N@M(Iw
for(int j=0;j insertSort(data,j,i); /ry#q%?
} M NE{mV(
} lF:gQ]oc
insertSort(data,0,1); blwdcdh
} I 9yNTD
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/** 6\MJvg\;
* @param data |P_\l,f8`
* @param j <&7KcvBn"4
* @param i ;CU<\
*/ lWv3c!E`
private void insertSort(int[] data, int start, int inc) { \haJe~
int temp; nt,tM/
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); k)W8%=R
} VrF(0,-Z`3
} ?|8QL9Q"|
} C043h?x
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} /t-m/&>
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快速排序: W;]*&P[[
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package org.rut.util.algorithm.support; \*}JdEHB
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import org.rut.util.algorithm.SortUtil; {:&t;5qz^
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/** 1 l'Wb2g>A
* @author treeroot Le9^,B@Pb
* @since 2006-2-2 aU]A#g
* @version 1.0 DLYk#d: q?
*/ G9s: Wp
public class QuickSort implements SortUtil.Sort{ )bZS0f-
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/* (non-Javadoc) FbB>
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m~ %\f8w-x
*/ Egv (n@1
public void sort(int[] data) { i,R<`K0
quickSort(data,0,data.length-1); 8(UUc>g
} N"2Ire
private void quickSort(int[] data,int i,int j){ >Vr+\c
int pivotIndex=(i+j)/2; OWs K>egD
file://swap B./Lp_QK
SortUtil.swap(data,pivotIndex,j); /,'D4s:Gg
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int k=partition(data,i-1,j,data[j]); .OM m"RtK
SortUtil.swap(data,k,j); \2#>@6Sqrl
if((k-i)>1) quickSort(data,i,k-1); <syMrXk)R(
if((j-k)>1) quickSort(data,k+1,j); vn@9Sqk
<6`_Xr7)
} w-?_U7'
/** DVxW2J
* @param data `_C4L=q"
* @param i EnXNTat})
* @param j +]-~UsM
* @return Hc1S:RW
*/ i-)OY,
private int partition(int[] data, int l, int r,int pivot) { /t`s.!k
do{ 8^CdE*a
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); m@)~.E
SortUtil.swap(data,l,r); GGcNaW'
} XTpYf
while(l SortUtil.swap(data,l,r); ( /{Wu:e
return l; F$P8"q+
} p`lv$ @q'
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} lAU`7uE
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改进后的快速排序: ?zW4|0
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package org.rut.util.algorithm.support; /?<o?IR~6
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import org.rut.util.algorithm.SortUtil; VWqmqR%
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/** &GF@9BXI3
* @author treeroot pEf1[ zq
* @since 2006-2-2 &@CcH_d*
* @version 1.0 {2Jo|z
*/ z97RNT|Y7U
public class ImprovedQuickSort implements SortUtil.Sort { -0rc4<};h
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private static int MAX_STACK_SIZE=4096; tQ=P.14>:
private static int THRESHOLD=10; <7-:flQz~
/* (non-Javadoc) IzPnbnS}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aMdWT4
*/ 53efF bo
public void sort(int[] data) { &Z!O
int[] stack=new int[MAX_STACK_SIZE]; ]E/^(T-O
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int top=-1; ~>vv9-_
int pivot;
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int pivotIndex,l,r; .|Unq`ll
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stack[++top]=0; z2'3P{#s
stack[++top]=data.length-1; )5n*4A
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while(top>0){ s6=jHrdvv
int j=stack[top--]; WUnz
int i=stack[top--]; 9 Z,K
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pivotIndex=(i+j)/2; G)~/$EF,_
pivot=data[pivotIndex]; &c[.&L,w4
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SortUtil.swap(data,pivotIndex,j); _{$eOwB
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file://partition 'x/pV5[hQ
l=i-1; .8[*`%K>
r=j; zsM3
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do{ n{'LF #4l
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); T$w`=7
SortUtil.swap(data,l,r); i`k{}!F
} K"fr4xHq
while(l SortUtil.swap(data,l,r); wz[Xay9jW
SortUtil.swap(data,l,j); 3`
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if((l-i)>THRESHOLD){ {N.JA=
stack[++top]=i; pAdx 6
stack[++top]=l-1; r@WfZZ
} _z6_mmMp
if((j-l)>THRESHOLD){ u9c^:Op
stack[++top]=l+1; yyZs[5Q
stack[++top]=j; fX:=_c
} =[_=y=G
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} /9QC$Z):<
file://new InsertSort().sort(data); czG]rl\1
insertSort(data); 8%\0v?a5
} ;*+wg5|
/** gPJZpaS
* @param data .:wo
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*/ Sv#S_jh
private void insertSort(int[] data) { m7$t$/g
int temp; Bjc<d,]
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 9_Ws8nE
} ,#V}qSKUS
} UI]UxEJ
} pB;8yz=
V'M#."Of/
} *xV
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归并排序: i8nzPKF2$3
JmBe1"hs
package org.rut.util.algorithm.support; T8t_+|(
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import org.rut.util.algorithm.SortUtil; dTTC6?yPXf
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/** k1_"}B5
* @author treeroot [sc4ULS &
* @since 2006-2-2 hVGK%HCz&
* @version 1.0 &P:2`\'
*/ )RCva3Ul
public class MergeSort implements SortUtil.Sort{ 'UFPQ
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/* (non-Javadoc) /6@$^paB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ox%.We5
*/ 9D`p2cO
public void sort(int[] data) { @AfC$T
int[] temp=new int[data.length]; EC8 Fapy
mergeSort(data,temp,0,data.length-1); V jqs\
} U
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private void mergeSort(int[] data,int[] temp,int l,int r){ ., =\/ C<
int mid=(l+r)/2; AAc*\K
if(l==r) return ; H[[#h=r0f
mergeSort(data,temp,l,mid);
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mergeSort(data,temp,mid+1,r); bH`r=@.:cu
for(int i=l;i<=r;i++){
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temp=data; 1zGhX]z
} @!KG;d:l
int i1=l; shuoEeoo
int i2=mid+1; )u>/:
for(int cur=l;cur<=r;cur++){ "NvB@>S
if(i1==mid+1) <!a%GI
data[cur]=temp[i2++]; i~ITRi@
else if(i2>r) EHH+)mlo
data[cur]=temp[i1++]; t2hI^J0y
else if(temp[i1] data[cur]=temp[i1++]; r}M2t$nv
else 5c 6 9M5
data[cur]=temp[i2++]; uGY(`
} ,tl(\4n
} Cm%xI&Y
Lt2<3DB
}
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改进后的归并排序: a"!r]=r
owe6ge7m
package org.rut.util.algorithm.support; a~wlD.P
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import org.rut.util.algorithm.SortUtil; ,r,$x4*
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/** k. ?@qCs[
* @author treeroot fK10{>E1
* @since 2006-2-2 EncJB
* @version 1.0 KvNw'3Ua
*/ q 1~3T;Il
public class ImprovedMergeSort implements SortUtil.Sort { m/p:W/0L
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private static final int THRESHOLD = 10; c3!YA"5
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/* ^
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* (non-Javadoc) +qee8QH
* {33B%5n"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5uO.@0
*/ fa2hQJ02
public void sort(int[] data) { ;hCUy=m.
int[] temp=new int[data.length]; !"bU|a
mergeSort(data,temp,0,data.length-1); d#u*NwY}
} [_1K1i"m
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private void mergeSort(int[] data, int[] temp, int l, int r) { 0xzS9
int i, j, k; }HxC~J"
int mid = (l + r) / 2; C~c|};&%
if (l == r) W+ v#m>G
return; Xr]<v%,C
if ((mid - l) >= THRESHOLD) {LqahO*
mergeSort(data, temp, l, mid); .Gn-`
else &e;GoJ
insertSort(data, l, mid - l + 1); ^wMZG'/
if ((r - mid) > THRESHOLD)
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mergeSort(data, temp, mid + 1, r); ?7\$zn)v#
else 2A(IsUtqO:
insertSort(data, mid + 1, r - mid); k@9CDwh*s
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for (i = l; i <= mid; i++) { s E0ldN"
temp = data; jI45X22j
} `+ 5,=S
for (j = 1; j <= r - mid; j++) { >m4HCs>
temp[r - j + 1] = data[j + mid]; a"whg~
} r9whW;"q
int a = temp[l];
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int b = temp[r];
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for (i = l, j = r, k = l; k <= r; k++) { #GIjU1-
if (a < b) { QRlrcauM
data[k] = temp[i++]; *7^w}v+.
a = temp; z0xw0M+X
} else { ?vV&tqnx%
data[k] = temp[j--]; 6
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b = temp[j]; ]=jpqxlx
} 1Gh3o}z
} 2F|06E'
} "cx#6Bo|
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/** on)$y&lu
* @param data ER)to<k
* @param l F.@U
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* @param i _>(qQ-Px
*/ &ngG_y8}&
private void insertSort(int[] data, int start, int len) { R d>PE=u
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); :y3e-lr
} A&7~]BR\
} qZ rv2dT
} OQ*rxLcA
} Uq:CM6q\
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堆排序: :2E?|}`7\
6/l{e)rX2o
package org.rut.util.algorithm.support; G ,?l
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import org.rut.util.algorithm.SortUtil; (sL!nRw
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/** [@`Ki
* @author treeroot {B)-+0 6
* @since 2006-2-2 M\)(_I)V=
* @version 1.0 f1TYQ?e
*/ MfK}DEJK,
public class HeapSort implements SortUtil.Sort{ (#5TM1/A
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/* (non-Javadoc) ]n (:X
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t7qzAr
*/ xI,7ld~
public void sort(int[] data) { 6[SE*/E@L
MaxHeap h=new MaxHeap(); V;%DS)-
h.init(data); $C`YVv%?0
for(int i=0;i h.remove(); Lk:Sju
System.arraycopy(h.queue,1,data,0,data.length); k!=
jO#)Rd
} mYw9lM
Z!SFJ{
private static class MaxHeap{ 4I7;/ZgALQ
x&