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。 nDlO5 pe"d
插入排序: idJh^YD
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package org.rut.util.algorithm.support; ~2/{3m{3 A
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import org.rut.util.algorithm.SortUtil; i~& c|
/** \~X&o% y
* @author treeroot "A]Y~iQ
* @since 2006-2-2 zfjTQMaxh
* @version 1.0 (:Cc3
*/
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public class InsertSort implements SortUtil.Sort{ `W[+%b
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/* (non-Javadoc) Lm.`+W5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7nz!0I^
*/ Isovwd
public void sort(int[] data) { 64D%_8#m
int temp; viuiqs5[Bi
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); !*P&Eat
} JfTfAq]
} FD6v/Y
}
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冒泡排序: _=6 OP8
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package org.rut.util.algorithm.support; u3Do~RyL[
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import org.rut.util.algorithm.SortUtil; ?Bu}.0ku-$
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/** m.V,I}J.q
* @author treeroot <*YO~S(R
* @since 2006-2-2 w4{y"A
* @version 1.0 k,X74D+
*/ d,R6` i
public class BubbleSort implements SortUtil.Sort{ Zu=kT}aGg
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/* (non-Javadoc) ozxYH],
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z( #Ln
*/ ]
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public void sort(int[] data) { 6wpU6NU
int temp; b}%g}L D
for(int i=0;i for(int j=data.length-1;j>i;j--){ >Me]m<$E;
if(data[j] SortUtil.swap(data,j,j-1); B~_Spp
} >Zdi5')
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} UE)fUTS
} ~Oh=
} g+9v$[!
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} IIaxgfhZ
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选择排序: zKJ.Tj W
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package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; QUPf*3Oy
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/** ,xj3w#`zaf
* @author treeroot vfXJYw+6_
* @since 2006-2-2 {{E jMBg{
* @version 1.0 cDO:'-
*/ C|$L6n>DR6
public class SelectionSort implements SortUtil.Sort { x(vai1CrdH
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/* vpa fru4
* (non-Javadoc) \ 522,n`
* O!];_q/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ss;
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*/ P/`m3aSzX.
public void sort(int[] data) { `r]TA]DR
int temp; )]A9~H
for (int i = 0; i < data.length; i++) { y.fs,!|%@
int lowIndex = i; &9@gm--b:
for (int j = data.length - 1; j > i; j--) { _vIO!*h0
if (data[j] < data[lowIndex]) { fkBLrw
lowIndex = j; k<, u0
} &GU@8
} <Cr8V'c
SortUtil.swap(data,i,lowIndex); L"^.0*X/d
} ~T&%
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} ~B*~'I9b*
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} .ujj:>
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Shell排序: Q,n4i@E
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package org.rut.util.algorithm.support; 4
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import org.rut.util.algorithm.SortUtil; qM*S*,s
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/** IW] *i?L
* @author treeroot
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* @since 2006-2-2 Nor`c+,4
* @version 1.0 .}~$1QKS
*/ oc((Yo+B
public class ShellSort implements SortUtil.Sort{ WCoF{*
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/* (non-Javadoc) u6p5:oJj,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,,}sK
*/ ~BtKd* ~*
public void sort(int[] data) { s~)L_ p
for(int i=data.length/2;i>2;i/=2){ f^u^-l
for(int j=0;j insertSort(data,j,i); `1$y( w]
} k%^<}s@
} T aEt
insertSort(data,0,1); k}-]W@UCa?
} U81;7L8
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/** H):-!?:
* @param data *i%.{ YH
* @param j =tNzGaWJ
* @param i =Iy/cHK
*/ 7:h<`_HT(X
private void insertSort(int[] data, int start, int inc) { 9ptZVv=O
int temp; pK<%<dIc
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 6GY32\Ac
} z;ULQ
} kAY@^vi
} b#Jo Xa9
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} Oq[i &
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快速排序: m';#R9\Fz
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package org.rut.util.algorithm.support; iwB8I^
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import org.rut.util.algorithm.SortUtil; ~Vwk:+):
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/** 0GS{F8f~,
* @author treeroot U)
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* @since 2006-2-2 nZ&T8@m
* @version 1.0 fVG$8tB
*/ DL
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public class QuickSort implements SortUtil.Sort{ xQX<w\s
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/* (non-Javadoc) Go-wAJ>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z@;jIH4 (
*/ `i=JjgG@
public void sort(int[] data) { h -Tsi:%b
quickSort(data,0,data.length-1); aMBL1d7
} S^|$23}
private void quickSort(int[] data,int i,int j){ ,Y$F7&
int pivotIndex=(i+j)/2; } /[_
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SortUtil.swap(data,pivotIndex,j); k& WS$R?u
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int k=partition(data,i-1,j,data[j]); ?]s%(R,B5
SortUtil.swap(data,k,j); NY.}uZ
if((k-i)>1) quickSort(data,i,k-1); u82h6s<'W
if((j-k)>1) quickSort(data,k+1,j); IO^:FnJJv
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} hyJ
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/** 79TPg
* @param data +.S#=
* @param i J 5Wz4`'
* @param j j?Cr31
* @return RP,A!pa@
*/ D8)O4bh
private int partition(int[] data, int l, int r,int pivot) { \m(ymp<c`
do{ Jq=00fcT+
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); K5 5} Wi
SortUtil.swap(data,l,r); DLNa6
} olYPlHF
while(l SortUtil.swap(data,l,r); ;RNM
return l; "kcpA#uD|
} #.<*; rB
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} w9G_>+?E
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改进后的快速排序: l. XknF
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package org.rut.util.algorithm.support; 7vii9Am7
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import org.rut.util.algorithm.SortUtil; _= o1?R
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/** N|UBaPS|o
* @author treeroot 0q:(-z\S4
* @since 2006-2-2 t9?R/:B%
* @version 1.0 [SCw<<l<
*/ hZp=BM"bJ
public class ImprovedQuickSort implements SortUtil.Sort { 2=igS#h
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private static int MAX_STACK_SIZE=4096; %T`4!:vy
private static int THRESHOLD=10; q:TZ=bs^
/* (non-Javadoc) fn1 ?Qp|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ tn"Y9
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public void sort(int[] data) { ATKYjhc _
int[] stack=new int[MAX_STACK_SIZE]; \Ku9"x
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int top=-1; N90\]dFmy
int pivot; jHs<s`#h
int pivotIndex,l,r; 3C>2x(]M
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stack[++top]=0; B`g<Ge~
stack[++top]=data.length-1; Q
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while(top>0){ ."~7 \E> t
int j=stack[top--]; 4y|xUO:
int i=stack[top--]; cEDDO&u
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pivotIndex=(i+j)/2; k)N2 +/
pivot=data[pivotIndex]; <bEN8b
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SortUtil.swap(data,pivotIndex,j); E\{^0vNc
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file://partition kV*y_5g
l=i-1; s,eld@
r=j; 03X<x|
do{ DePV,.
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); GOv92$e
SortUtil.swap(data,l,r); y+K7WUwhq
} AzHIp^
while(l SortUtil.swap(data,l,r); P`\m9"7
SortUtil.swap(data,l,j); S/@dkHI'
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if((l-i)>THRESHOLD){ n.2E8m/
stack[++top]=i; Ck ~V5
stack[++top]=l-1; Q3B'-BZe
} (P
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if((j-l)>THRESHOLD){ qPFG+~\c
stack[++top]=l+1; *k3 d^9o#
stack[++top]=j; B(4:_j\2
} Rz<d%C;R
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} jOoIF/So
file://new InsertSort().sort(data); j33P~H~
insertSort(data); *=-__|t
} WmT}t
/** $$2S*qY
* @param data
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*/ TEaD-mY3
private void insertSort(int[] data) { jjS{q,bo
int temp; f_i"/xC-/
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); `-72>F ;T
} 33#7U+~]@
} gFWEodx,9
} "!%w9
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} 5XSxQG@k^z
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归并排序: /(hP7_]`2
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package org.rut.util.algorithm.support; /%J&/2Wz
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import org.rut.util.algorithm.SortUtil; ?)Czl4J
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/** L}e"nzTE6I
* @author treeroot <B]i80.
* @since 2006-2-2 Dyouk+08x
* @version 1.0 1jUhG2y
*/ rZ8Y=) e
public class MergeSort implements SortUtil.Sort{ (n":]8}
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/* (non-Javadoc) P`Hd*xh".j
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _V_8p)%
*/ a'_MhJ zs
public void sort(int[] data) { t_dw}I
int[] temp=new int[data.length]; an$]IN
mergeSort(data,temp,0,data.length-1); G*vpf~q?
} 5C Y@R
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private void mergeSort(int[] data,int[] temp,int l,int r){ =M/UHOY
int mid=(l+r)/2; Z!]U&Ax`Z
if(l==r) return ; dbMu6Bm\G
mergeSort(data,temp,l,mid); BDRYip[Sa
mergeSort(data,temp,mid+1,r); lJ2|jFY9
for(int i=l;i<=r;i++){ xu%!
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temp=data; [}9XHhY1O=
} +2;#9aa
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int i1=l; YmO"EWb
int i2=mid+1; 7U{b+=,wK
for(int cur=l;cur<=r;cur++){ )F%wwc^r
if(i1==mid+1) g9([3pV,
data[cur]=temp[i2++]; sl^s9kx;C$
else if(i2>r) %|D\j-~
data[cur]=temp[i1++]; ;G4HMtL
else if(temp[i1] data[cur]=temp[i1++]; hdsgOu
else 8zCGMhd
data[cur]=temp[i2++]; yNLa3mW
} X>6~{3
} U<gUX07
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} l$p_])x
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改进后的归并排序: VeN&rjc
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package org.rut.util.algorithm.support; _M"$5
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import org.rut.util.algorithm.SortUtil; ZHiICh|et%
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/** +/@ZnE9s
* @author treeroot `jUS{ 3^
* @since 2006-2-2 B(en5|
* @version 1.0 R@7GCj
*/ JR a*;_
public class ImprovedMergeSort implements SortUtil.Sort { (}~eD
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private static final int THRESHOLD = 10; w371.84
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/* XC$+ `?
* (non-Javadoc) Y&05
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* e&H<lT
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G7/?hky 0.
*/ "#\bQf}
public void sort(int[] data) { +}(B856+
int[] temp=new int[data.length]; $^NWzc
mergeSort(data,temp,0,data.length-1); WfTdD.Xx
} 2=Y_Qrhi
*(\;}JF-
private void mergeSort(int[] data, int[] temp, int l, int r) { $Va]vC8?
int i, j, k; }lNufu
int mid = (l + r) / 2; Zm;
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if (l == r) <SC|A|
return; ~kj(s>xP
if ((mid - l) >= THRESHOLD) #o r7T^
mergeSort(data, temp, l, mid); ]:E! i^C`Z
else {Jw<<<G
insertSort(data, l, mid - l + 1); o$blPTN
if ((r - mid) > THRESHOLD) ,I2reG
mergeSort(data, temp, mid + 1, r); jC/JiI
else (;2J(GZ:$U
insertSort(data, mid + 1, r - mid); { ck
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for (i = l; i <= mid; i++) { L
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temp = data; e\
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} S)'q:`tZo
for (j = 1; j <= r - mid; j++) { O 44IH`SI
temp[r - j + 1] = data[j + mid]; e}Af"LI
} vZ nO
int a = temp[l]; H8t{ >C)]
int b = temp[r]; <E}]t,'3
for (i = l, j = r, k = l; k <= r; k++) { Q5Ghki
if (a < b) { "PX3%II
data[k] = temp[i++]; XM@-Y&c$A
a = temp; .f92^lu9
} else { }_kI>
data[k] = temp[j--]; 5k%N<e``
b = temp[j]; y8~)/)l&
} 6rN5Xf cS
} }'.Sn{OWf
} ^cmP
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/** =iK6/ y`
* @param data GaK_9Eg-2
* @param l E]eqvT NH
* @param i %*Z2Gef?H
*/ !DX/^b
private void insertSort(int[] data, int start, int len) { v/TlXxfil
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ik:)-GV;s
} 3~3(G[w
} dI0>m:RBz
} Znl>*e/|
} q=0{E0@9({
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堆排序: SiuO99'nV
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package org.rut.util.algorithm.support; 7si*%><X
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import org.rut.util.algorithm.SortUtil; C"` 'Re5)
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/** v!RB(T3
* @author treeroot zju,#%
* @since 2006-2-2 "MS`d+rf\
* @version 1.0 O->(9k <
*/ 'ZZWH
public class HeapSort implements SortUtil.Sort{ vkd<l&zD
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/* (non-Javadoc) d7K17KiC
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !q6V@&
*/ yE|}
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public void sort(int[] data) { z.9FDQLp
MaxHeap h=new MaxHeap(); Oi%~8J>
h.init(data); >
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for(int i=0;i h.remove(); 9@z|2z2\G
System.arraycopy(h.queue,1,data,0,data.length); $?A Uk
} dZiWVa
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private static class MaxHeap{ 2hA66ar{$
/2\=sTd
void init(int[] data){ `J,~hK
this.queue=new int[data.length+1]; /'=^^%&:B