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。 `g:^KCGMM
插入排序: Y>!W&Gtu
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package org.rut.util.algorithm.support; o0+BQ&A)s*
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import org.rut.util.algorithm.SortUtil; %-p{?=:K
/** I)/7M}t`
* @author treeroot $m0x8<7nu
* @since 2006-2-2 =4\~M"[p
* @version 1.0 ,(kXF:
*/ {-]HYk
public class InsertSort implements SortUtil.Sort{ FveK|-
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/* (non-Javadoc) NX #d}M^V
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8!`.%)- 4
*/ adPU)k_j:
public void sort(int[] data) { rQ@o
int temp; cb&In<q
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); teNQUIe-
} bRe *(
} Saq>o.
} v?"ee&Y6
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冒泡排序: <>/MKMq!
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package org.rut.util.algorithm.support; #$rT 4Nc;
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import org.rut.util.algorithm.SortUtil; `V2j[Fz
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/** pXEVI6 }
* @author treeroot V~"d`j
* @since 2006-2-2 Z8n%=(He
* @version 1.0 >} (*s^!k
*/ :q[n1
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public class BubbleSort implements SortUtil.Sort{ r&~iEO|?\
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/* (non-Javadoc) d?X6x
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tpzdYokh>
*/ RKb3=}
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public void sort(int[] data) { !PTbR4s
int temp; (G!J==
for(int i=0;i for(int j=data.length-1;j>i;j--){ 4$w-A-\t
if(data[j] SortUtil.swap(data,j,j-1); BcO2* 3
} $5(%M8qmQ
} #;\;F PuZ
} `%I{l
} 2l4 i-;
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} ^`5Yxpz
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选择排序: QHz76i!=>
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package org.rut.util.algorithm.support; ri V/wN9C
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import org.rut.util.algorithm.SortUtil; )cBV;
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/** A'R sy6
* @author treeroot A0sW 9P6F
* @since 2006-2-2 B y8Tw;aL
* @version 1.0 FLOJ
*/ +~]g&Mf6o
public class SelectionSort implements SortUtil.Sort { /k Vc7LC
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/* w'>v@`y
* (non-Javadoc) 5E(P,!-.
* n\DT0E]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1k({(\>qq
*/ lY?d*qED
public void sort(int[] data) { [6qP;
int temp; NistW+{<
for (int i = 0; i < data.length; i++) { OyZ>R~c'B
int lowIndex = i; 64s;6=
for (int j = data.length - 1; j > i; j--) { rqo<Xt`
if (data[j] < data[lowIndex]) { $^ 3 f}IzA
lowIndex = j; SkUP9
} +38P$Koz{r
} tqC#_[~7
SortUtil.swap(data,i,lowIndex); "7/YhLq7
} U2u>A
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} \Nyxi7
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} =
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Shell排序: l0_O<
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package org.rut.util.algorithm.support; =Bx~'RYl1d
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import org.rut.util.algorithm.SortUtil; . r"?w
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/** Z%Kj^
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* @author treeroot *r3vTgo$
* @since 2006-2-2 y~ LVK8
* @version 1.0 y>PbYjuIU
*/ go5!zSs
public class ShellSort implements SortUtil.Sort{ {`
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/* (non-Javadoc) +y(h/NcQ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @ U|u _S@
*/ PS1~6f"D
public void sort(int[] data) { Yw
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for(int i=data.length/2;i>2;i/=2){ $sJfxh
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for(int j=0;j insertSort(data,j,i); z<*]h^!3
} 'M/&bu r
} "TI?
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insertSort(data,0,1); tBQ>
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} G8'3.;"W5
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/** X2Mj|_#u
* @param data qo|iw+0Y
* @param j v_h{_b8
* @param i @I:&ozy }=
*/ }hxYsI"d
private void insertSort(int[] data, int start, int inc) { 5Bk
int temp; 2Mp;/b!
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); fOAb?:D
} |7'W)s5.
} GK+w1%6)
}
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} G=e[TR)i
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快速排序: *ni|I@8
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package org.rut.util.algorithm.support; $_kU)<e3
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import org.rut.util.algorithm.SortUtil; LLiX%XOh
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/** M`'2
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* @author treeroot {wySH[V
* @since 2006-2-2 f5Oh#
* @version 1.0 [E1I?hfJ
*/ g^FH[(P[G
public class QuickSort implements SortUtil.Sort{ va<pHSX&I@
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/* (non-Javadoc) 5N0H^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g>f394j
*/ $-73}[UA 4
public void sort(int[] data) { ;p8xL)mUP
quickSort(data,0,data.length-1); .rHO7c,P~
} >{Djx
private void quickSort(int[] data,int i,int j){ >E3OYa?G
int pivotIndex=(i+j)/2; *6DKUCA/
file://swap VXp
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SortUtil.swap(data,pivotIndex,j); +,,~<Vm
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int k=partition(data,i-1,j,data[j]); *v&RGY[>
SortUtil.swap(data,k,j); v80e]M!
if((k-i)>1) quickSort(data,i,k-1); he@swE&
if((j-k)>1) quickSort(data,k+1,j); 3V]a "C
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} wvD|c%
/** GU`2I/R
* @param data Zh*I0m
* @param i w'C(? ?mH
* @param j ifUgj8i_
* @return gC_U7a w
*/ LJ?7W,?
private int partition(int[] data, int l, int r,int pivot) { h.NA$E?7
do{ Sj\8$QIXC
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); rE
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SortUtil.swap(data,l,r); Rd/!CJ@g
} lCXo+|$?s
while(l SortUtil.swap(data,l,r);
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return l; 2\n6XAQ*
} qW*)]s)z
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} r.[k D"l
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改进后的快速排序: oVdmgmT.Y
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package org.rut.util.algorithm.support; ~p&sd)
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import org.rut.util.algorithm.SortUtil; V.qB3V$
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/** WD<M
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* @author treeroot v2NzPzzyb
* @since 2006-2-2 S"*wP[d.9
* @version 1.0 ynhH5P|6,
*/ 5n<Efi]j
public class ImprovedQuickSort implements SortUtil.Sort { tP3Upw"U
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private static int MAX_STACK_SIZE=4096; Ad(j&P
private static int THRESHOLD=10; *:iFhKFU
/* (non-Javadoc) JdE=!~\8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R/=yS7@{)
*/ t5S S]
public void sort(int[] data) { ~_Aclm?
int[] stack=new int[MAX_STACK_SIZE]; N]3XDd|q
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int top=-1; ]'Bz%[C)
int pivot; L]Uy+[gg
int pivotIndex,l,r; 8WMC ~
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stack[++top]=0; iVE+c"c!2&
stack[++top]=data.length-1; kAMt8
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while(top>0){ R b'"09)$
int j=stack[top--]; ,xGkE7=5
int i=stack[top--]; FKPI{l
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pivotIndex=(i+j)/2; i -+B{H
pivot=data[pivotIndex]; >5\rU[H>
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SortUtil.swap(data,pivotIndex,j); "Mth<%i
rc"yEI-``"
file://partition qSON3Iid
l=i-1; z'
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r=j; ~e|~c<!z8@
do{ D9h\=[%e
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Hly$ Wm
SortUtil.swap(data,l,r); Tw$la kw
} ~%cbp&s*/q
while(l SortUtil.swap(data,l,r); E$gcd#rT
SortUtil.swap(data,l,j); 9i n& \
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if((l-i)>THRESHOLD){ l&zd7BM9(
stack[++top]=i; a4?:suX$
stack[++top]=l-1; P:=3;d{v
} J^U#dYd
if((j-l)>THRESHOLD){ *g7dB2{
stack[++top]=l+1; @#nB]qV:e
stack[++top]=j; h/d&P
} bx1'
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} #8cY,%<S]
file://new InsertSort().sort(data); ,`K'qms
insertSort(data); VK8 5A
} QM
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/** p tMysYT'
* @param data ;sDFTKf
*/ Pl
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private void insertSort(int[] data) { I_4'9
int temp; P'[w9'B
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); vV8}>
} 7^=O^!sa
} !9B)/Xi
} _&P![o)x
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} ~b*f2UVs
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归并排序: 'F1NBL
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package org.rut.util.algorithm.support; ,u/GA<'#M
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import org.rut.util.algorithm.SortUtil; nI&Tr_"tm
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/** :Fm)<VN"
* @author treeroot L9(fa+$+#
* @since 2006-2-2 Z':}ZXy]
* @version 1.0 -
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*/ x,pzX(
public class MergeSort implements SortUtil.Sort{ L"9,K8
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/* (non-Javadoc) IZ"d s=w
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vn7<>k>dx
*/ p \1-.
public void sort(int[] data) { <rNCb;
int[] temp=new int[data.length]; 4 QD.'+L
mergeSort(data,temp,0,data.length-1); y]yp8Bs+
} x pT85D
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private void mergeSort(int[] data,int[] temp,int l,int r){ wpO-cJ!,
int mid=(l+r)/2; zrri&QDF<
if(l==r) return ; YQLp#
mergeSort(data,temp,l,mid); (=,p"3^
mergeSort(data,temp,mid+1,r); l-g+E{ZM
for(int i=l;i<=r;i++){ \^i/:
temp=data; C[gy{40}
} 8V?O=3<a
int i1=l; HsO4C)/
int i2=mid+1; B/7c`V
for(int cur=l;cur<=r;cur++){ Cwl#(;@
if(i1==mid+1) 0& 54xP
data[cur]=temp[i2++]; w|7<y8#qC
else if(i2>r) jw]~g+x#$
data[cur]=temp[i1++]; l*rli[No
else if(temp[i1] data[cur]=temp[i1++]; uDbz`VpK
else 9v=5x[fE
data[cur]=temp[i2++]; hKj"Lb9]
} Z7lv|m&
} T_i]y4dg
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} |5^tp
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改进后的归并排序: x8+W9i0[1
v@(Y:\>
package org.rut.util.algorithm.support; LR|L P)I
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import org.rut.util.algorithm.SortUtil; kWZ?86!
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/** wGr5V!
* @author treeroot E]/` JI'%
* @since 2006-2-2 &;I=*B~kE$
* @version 1.0 4Hc+F(
*/ q$7SJ.pF
public class ImprovedMergeSort implements SortUtil.Sort { R9%Um6
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private static final int THRESHOLD = 10; ))JbROBU,
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/* XR3=Y0YDf
* (non-Javadoc) kqdF)Wa am
* kwF4I)6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;n0VF77>O
*/ h2<Y*j
public void sort(int[] data) { u2}zRC=
int[] temp=new int[data.length]; &]~Vft
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mergeSort(data,temp,0,data.length-1); H=,0p
} w_4/::K*
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private void mergeSort(int[] data, int[] temp, int l, int r) { 0<(F
8
int i, j, k;
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int mid = (l + r) / 2; b}s)3=X@q
if (l == r) {kVhht]X
return; V}_M\Y^^;
if ((mid - l) >= THRESHOLD) \-i5b
mergeSort(data, temp, l, mid); vy&q7EX<i
else 4AA3D!$
insertSort(data, l, mid - l + 1); KVQ|l,E,
/
if ((r - mid) > THRESHOLD) XpS].P9
mergeSort(data, temp, mid + 1, r); !}
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else pH!e<m
insertSort(data, mid + 1, r - mid); 8Evon&G59
" b?1Yc-
for (i = l; i <= mid; i++) { ` 9iB`<
temp = data; gK7bP'S8H
} St 4YNS.|
for (j = 1; j <= r - mid; j++) { kIR?r0_<G6
temp[r - j + 1] = data[j + mid]; *% 6NuZ
} E3%:7MB
int a = temp[l]; SY &)?~C
int b = temp[r]; KPW2e2{4@
for (i = l, j = r, k = l; k <= r; k++) { j6@5"wx
if (a < b) { 0H;,~
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data[k] = temp[i++]; fiG/"/u
a = temp; gN./u
} else { _\mMgZu
data[k] = temp[j--]; %uA\Le
b = temp[j]; }fzv9$]$
} rsSE*(T
t
} )}`3haG
} {6E&\
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/** @-9u;aL
* @param data HH`G/(a
* @param l JrZ"AId2
* @param i >U?U;i
*/ rwYlg:
private void insertSort(int[] data, int start, int len) { %UV'HcO/gp
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); BM6 J
} AiMD"7
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} E}&Z=+v}
} F^knlv'
} kWkAfzf4a
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堆排序: k#*tf:R
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package org.rut.util.algorithm.support; &tKr
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import org.rut.util.algorithm.SortUtil; L!fiW`>0G
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/** HZ>8@AVa\
* @author treeroot WrzyBG_
* @since 2006-2-2 i]sz*\P~
* @version 1.0 =[X..<bW9:
*/ Yr7%C
public class HeapSort implements SortUtil.Sort{ io8c[#"uU
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/* (non-Javadoc) n4* hQi+d
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Av3qoH)[<
*/ $%*E)~
public void sort(int[] data) { eJh4hp;x
MaxHeap h=new MaxHeap(); }\p>h
h.init(data); 3)5Gzn
for(int i=0;i h.remove(); 6L`{oSX!
System.arraycopy(h.queue,1,data,0,data.length); Q $wa<`
} o'9K8q\1
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private static class MaxHeap{ yW3X<
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void init(int[] data){ XI>|"*-l
this.queue=new int[data.length+1]; aq a%B
for(int i=0;i queue[++size]=data; T!GX^nn*O
fixUp(size); Z33&FUU
} 1O<Gg<<,e
} 5)%bnLxn
GoVB1)
private int size=0; G'*_7HD
zP[_ccW@
private int[] queue; [8T
fa~u<