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$/s` |]
插入排序: v!n|X7
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package org.rut.util.algorithm.support; Gu2=+?i?h
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import org.rut.util.algorithm.SortUtil; "N}MhcdS
/** DwTVoCC
* @author treeroot n-dC!t
* @since 2006-2-2 Z`%^?My
* @version 1.0 _tQM<~Y]u\
*/ l Yj$3
public class InsertSort implements SortUtil.Sort{ AmCymT3P*e
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/* (non-Javadoc) X@A8~kj1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0juP"v$C>
*/ V9>$M=
public void sort(int[] data) { VjeF3pmBa
int temp; T7Ju7_q}
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ~eiD(04^r*
} "b)EH/s
} Kz]\o"K
} 8ddBQfCY
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} }`76yH^c
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冒泡排序: .^ba*qb`{
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package org.rut.util.algorithm.support; c;#gvE
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import org.rut.util.algorithm.SortUtil; g<8Oezi 65
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/** >I+p;V$@
* @author treeroot ]x'd0GH"]
* @since 2006-2-2 G) 37?A)
* @version 1.0 rfh`;G5s
*/ _ZK*p+u%
public class BubbleSort implements SortUtil.Sort{ I%z,s{9p
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/* (non-Javadoc) D|vck1C5,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .[?2_e#9 %
*/ I &%
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public void sort(int[] data) { ^i@0P}K<
int temp; eK\i={va
for(int i=0;i for(int j=data.length-1;j>i;j--){ uj)fah?Wg
if(data[j] SortUtil.swap(data,j,j-1); idjk uB(6
} v++&%
} &IG*;$c!
} ,OMdLXr
} ?MSV3uODb
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} 1T4#+kW&
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选择排序: M~.1:%khM
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package org.rut.util.algorithm.support; "|E'E"_1
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import org.rut.util.algorithm.SortUtil; {!1RlW
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/** hN\Q&F!
* @author treeroot p y%:,hi
* @since 2006-2-2 X'/'r.b6
* @version 1.0 wf^p?=Ke
*/ [z'jL'\4
public class SelectionSort implements SortUtil.Sort { rX?%{M,xFw
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/* qtz~Y~h|>
* (non-Javadoc) /.t1Ow
* kJCeQK:W
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {=MRJg!U
*/ b4(,ls
public void sort(int[] data) { fBBtS S
int temp; Bf3 QB]9
for (int i = 0; i < data.length; i++) { @oD2_D2
int lowIndex = i; gz Dfx&.0
for (int j = data.length - 1; j > i; j--) { 1q|iw
if (data[j] < data[lowIndex]) { !-JvVdM;(
lowIndex = j; Z~;rp`P
} K[Vj+qdyl
} Ir Y\Q)
SortUtil.swap(data,i,lowIndex); ^SIA%S3
} vm=d?*cR
} nJwP|P_
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} ;B{oGy.
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Shell排序: {r#uD5NJ/
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package org.rut.util.algorithm.support; l.BiE<&
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import org.rut.util.algorithm.SortUtil; UsdMCJ&G
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/** `yC[Fn"E^
* @author treeroot T sdgg?#
* @since 2006-2-2 Dnd
* @version 1.0 s#Xfu\CP
*/ C;_0 0EQ=
public class ShellSort implements SortUtil.Sort{ UMK9[Iy$<M
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/* (non-Javadoc) nXERj; Q"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4Zn [F^p
*/ ffsF], _J
public void sort(int[] data) { #6C<P!]V
for(int i=data.length/2;i>2;i/=2){ I[n|#N
for(int j=0;j insertSort(data,j,i); #wsi><7
} ^Iqu ^n?2.
} equi26jhr
insertSort(data,0,1); v]T?xo~@'
} ^E".`~R
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/** !iK{q0
* @param data CXTtN9N9
* @param j p!\GJ a",
* @param i `r0lu_.$]4
*/ G7r .Jm^q
private void insertSort(int[] data, int start, int inc) { g`)0
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int temp; l9&L$,=
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); LyG`q3@
} lcVG<*gf-
} C*
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} }%D${.R]
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} w zi7pJjXh
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快速排序: }[(v(1j='~
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package org.rut.util.algorithm.support; apnpy\in
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import org.rut.util.algorithm.SortUtil; C 1)+^{7ef
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/** |\94a
* @author treeroot }]^/`n
* @since 2006-2-2 ;jBS:k?
* @version 1.0
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*/ }nSu7)3$B
public class QuickSort implements SortUtil.Sort{ uG-S$n"7K
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/* (non-Javadoc) KDj/S-S
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 86a,J3C[
*/ hDc2T
public void sort(int[] data) { 7\gu; [n
quickSort(data,0,data.length-1); o'8%5M@
} }rF4M1+B\
private void quickSort(int[] data,int i,int j){ bH!_0+$P
int pivotIndex=(i+j)/2; +{#Z^y6&
file://swap 9_~9?5PU
SortUtil.swap(data,pivotIndex,j); >:BgatyPH
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int k=partition(data,i-1,j,data[j]); 9Q\RCl_1
SortUtil.swap(data,k,j); F)@zo/u5L
if((k-i)>1) quickSort(data,i,k-1); ;Eh"]V,e
if((j-k)>1) quickSort(data,k+1,j); VKg9^%#b`[
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} )19#g1rn5
/** LLbI}:
* @param data _rz\[{)
* @param i mP?}h
* @param j QSwT1P'U
* @return yw1Xxwc
*/ :)h4SD8Y
private int partition(int[] data, int l, int r,int pivot) { }g:'K
do{ ?[%.4i;-h
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); @q{.
SortUtil.swap(data,l,r); ,uO_C(G/i
} MPYYTQ1FB
while(l SortUtil.swap(data,l,r); _xnJfW_
return l; ?~cO\(TY["
} 6X$nZM|g,
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} fuWAw^&
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改进后的快速排序: Pon0(:#1
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package org.rut.util.algorithm.support; KIKIag#
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import org.rut.util.algorithm.SortUtil; 'z@]hm#
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/** f"^t~q[VS
* @author treeroot 2X(2O':Uc
* @since 2006-2-2 ^N`KT
* @version 1.0 yN06` =
*/ LxiN9
public class ImprovedQuickSort implements SortUtil.Sort { "W_E!FP]r
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private static int MAX_STACK_SIZE=4096; $-<yX<.
private static int THRESHOLD=10; vG=Pi'4XXo
/* (non-Javadoc) =\\rk,F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fgHsg@33N
*/ Cv
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public void sort(int[] data) { =FdFLrx~l
int[] stack=new int[MAX_STACK_SIZE]; 17w{hK4o8O
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int top=-1; ]/AU_&
int pivot; kV3LFPf>0
int pivotIndex,l,r; }r"E\~E
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stack[++top]=0; P]L%$!g
stack[++top]=data.length-1; $#wi2Ve=6b
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while(top>0){ gV*4{d`
int j=stack[top--]; -w'g0/fD
int i=stack[top--]; '
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pivotIndex=(i+j)/2; $}EARW9
pivot=data[pivotIndex]; n"Jj'8k
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SortUtil.swap(data,pivotIndex,j); ~4c,'k@
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file://partition Zjs,R{
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r=j; y{XNB}E
do{ nFro#qx
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ucbtPTFYvr
SortUtil.swap(data,l,r);
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} tA9Ew{3s
while(l SortUtil.swap(data,l,r); ZvK3Su)f1
SortUtil.swap(data,l,j); @(."[O:
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if((l-i)>THRESHOLD){ 5r;)Ppo
stack[++top]=i; U8%IpI;
stack[++top]=l-1; E^~ {thf
} &]anRT#
if((j-l)>THRESHOLD){ =w:H9uj6F
stack[++top]=l+1;
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stack[++top]=j; #kJ8 qN
} O.aAa5^uh
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} 7dlMDHp\Y
file://new InsertSort().sort(data); s"8z q;)
insertSort(data); )a+bH </'
} Qb;]4[3
/** "kucFf f
* @param data kpk ^Uw%f
*/ FE#|5;q.
private void insertSort(int[] data) { WJ 'lYl0+7
int temp; ]]5(:>l
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); F'_z$,X6
} "k),;1
} j}8^gz]
} }Fu2%L>
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} sr~VvciIy
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归并排序: C3 m_sv#e
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package org.rut.util.algorithm.support; DG3Mcf@5
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import org.rut.util.algorithm.SortUtil; G)""^YB-
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/** IY?o \vC
* @author treeroot nYj7r*e[
* @since 2006-2-2 q@4Cw&AI+
* @version 1.0 FE06,i\{
*/ "`w*-O
public class MergeSort implements SortUtil.Sort{ viVn
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/* (non-Javadoc) T{BGg
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0+A#k7c6p
*/ f1d<xGx
public void sort(int[] data) { _ CzAv%
int[] temp=new int[data.length]; aecvz0}@R
mergeSort(data,temp,0,data.length-1); EE qlsH
} q"LT 8nD\
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private void mergeSort(int[] data,int[] temp,int l,int r){ frWY8&W^H
int mid=(l+r)/2; $% W.=a'5
if(l==r) return ; uLN.b339
mergeSort(data,temp,l,mid); 4XeO^#
mergeSort(data,temp,mid+1,r); 4U[X-AIY&
for(int i=l;i<=r;i++){ aCBq}Xcn
temp=data; 0s.4]Zg>5
} Qk^}
int i1=l; ork{a.1-_w
int i2=mid+1; 2$gFiZ
for(int cur=l;cur<=r;cur++){ t"6u
if(i1==mid+1) EV~?]Kt~
data[cur]=temp[i2++]; 5%DHF-W)
else if(i2>r) 8JO(P0aT
data[cur]=temp[i1++]; n|PW^kOE/
else if(temp[i1] data[cur]=temp[i1++]; ASNo6dP7
else >DW%i\k1V~
data[cur]=temp[i2++]; <*p
} H#bu3*'
} F+V[`w*k
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} CTc#*LJx>j
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改进后的归并排序: ay=f1<a
HA0yX?f]
package org.rut.util.algorithm.support; h:vI:V[/X
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import org.rut.util.algorithm.SortUtil; D,s[{RW+q
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/** _^^5
* @author treeroot 6V1
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* @since 2006-2-2 }oii|=,#^
* @version 1.0 ?j}
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*/ qPCI@5n3T?
public class ImprovedMergeSort implements SortUtil.Sort { az Oib=3fz
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private static final int THRESHOLD = 10; f:9qId
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/* 0#F<JsO|u
* (non-Javadoc) "04:1J`
* M5]$w]Ny9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5eas^Rm
*/ lq27^K
public void sort(int[] data) { W1Om$S1
int[] temp=new int[data.length]; '_xa>T}
mergeSort(data,temp,0,data.length-1); }i\_`~
} JZD&u6tB
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private void mergeSort(int[] data, int[] temp, int l, int r) { Zg >!5{T
int i, j, k; g^:7mG6C
int mid = (l + r) / 2; o(xt%'L`t
if (l == r) vu/P"?F
return; LeMo")dk\
if ((mid - l) >= THRESHOLD) jL~. =QD
mergeSort(data, temp, l, mid); 0O?!fd n
else f<@`{oP@
insertSort(data, l, mid - l + 1); $`/F5R!
if ((r - mid) > THRESHOLD) jt&rOPL7
mergeSort(data, temp, mid + 1, r); vLM-v
else diF2:80o
insertSort(data, mid + 1, r - mid); 5VlF\-
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for (i = l; i <= mid; i++) { T'VKZ5W
temp = data; TK%MVL TK
} 5U(ry6fI=
for (j = 1; j <= r - mid; j++) { K.6xNQl{}
temp[r - j + 1] = data[j + mid]; O,7*dniH
} H=_k|#/
int a = temp[l]; Eb\SK"8
int b = temp[r]; IN!IjInaT@
for (i = l, j = r, k = l; k <= r; k++) { Je~<2EsQ
if (a < b) { ~ponYc.Y
data[k] = temp[i++]; .BZ3>]F3<
a = temp; Uj~
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} else { 1?T^jcny:M
data[k] = temp[j--]; 6XGqZ!2
b = temp[j]; h)yAge
} j}$Q`7-wB1
} }Ym~[S*x
} BoPJ;6?>}
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/** 4> (OM|X=9
* @param data 5> =Ia@I
* @param l ZDl(q~4?z
* @param i @jH8x!5u:
*/ .cg"M0
private void insertSort(int[] data, int start, int len) { _gP-$&JC
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); VW\~OH
} 7j\jOklV
} N>+L?C
} \-)augq([
} [+4--#&{
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堆排序: / 9soUt
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package org.rut.util.algorithm.support; w]VdIS
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import org.rut.util.algorithm.SortUtil; rfc;
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/** iY4FOt7\
* @author treeroot NxQ+z^o\
* @since 2006-2-2 pL)o@-k#%
* @version 1.0 {!7 ^w
*/ +"2IQme5
public class HeapSort implements SortUtil.Sort{ i^u5j\pfY*
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/* (non-Javadoc) EU-=\Y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TZ%u;tBH:
*/ iMr/i?`i
public void sort(int[] data) { O[#pB.
4
MaxHeap h=new MaxHeap(); MzO4Yv"A
h.init(data); Ue)8g#
for(int i=0;i h.remove(); Z3
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System.arraycopy(h.queue,1,data,0,data.length); &5F@u
IA
} 7\1bq&a<
R} aHo0r
private static class MaxHeap{ <