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。 b+`mh
插入排序: "TgE@bC
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package org.rut.util.algorithm.support; F&I ;E i
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import org.rut.util.algorithm.SortUtil; sXaIQhZ
/** rtM!|apr
* @author treeroot Oor&1
* @since 2006-2-2 =z$XqT.'
* @version 1.0 Qy+&N*k>
*/ >IzUn: 0F
public class InsertSort implements SortUtil.Sort{ td6$w:SN,l
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/* (non-Javadoc) h&4f9HhS=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -n `igC
*/ fQB>0RR2
public void sort(int[] data) { g@jAIy]
int temp; P5*~Wi`
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Ydr/ T/1
} MXj7Z3
} AqzPwO^
} }`,}e 259
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} _@47h86Q
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冒泡排序: 3+EAMn
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package org.rut.util.algorithm.support; m% {4
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import org.rut.util.algorithm.SortUtil; :uD*Q/
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/** ]E+deM
* @author treeroot 9O+><x[i
* @since 2006-2-2 7.o:(P1??g
* @version 1.0 ?T(>!m
*/ z$>_c"D
public class BubbleSort implements SortUtil.Sort{
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/* (non-Javadoc) hF!t{ Lf3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v3i]z9`
*/ E .kjYIH8
public void sort(int[] data) { uWYI p\NN
int temp; xjOj1Hv
for(int i=0;i for(int j=data.length-1;j>i;j--){ rK%A=Q
if(data[j] SortUtil.swap(data,j,j-1); ZO2$Aan
} cv b:FK
} +hIStA
} \+cU}
} x)SW1U3TVx
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选择排序: y0d a8sd)
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package org.rut.util.algorithm.support; D9;2w7v
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import org.rut.util.algorithm.SortUtil; k(oHmw
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/** V^P]QQ\
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* @author treeroot )@xHL]!5m
* @since 2006-2-2 GIt~"X
* @version 1.0 "Z&-:1tP{9
*/ o
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public class SelectionSort implements SortUtil.Sort { 0Jh^((i*
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/* Nd.+Rs
* (non-Javadoc) gJ_{V;R
* /R@,c
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w~NQAHAvo
*/ =""z!%j
public void sort(int[] data) { @{_L38. Nw
int temp; b3G4cO;t;
for (int i = 0; i < data.length; i++) { (3DjFT3
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int lowIndex = i; Lbka*@
for (int j = data.length - 1; j > i; j--) { :@:i*2=
if (data[j] < data[lowIndex]) { <6]TazW?S
lowIndex = j; ^T[8j/9o^
} 9y(75Bn9
} R&cOhUj22J
SortUtil.swap(data,i,lowIndex); ymdZ#I-
} Q2c|sK8
} ccc*"_45#
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} s4@dEK8W
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Shell排序: W0X/&v,k*
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package org.rut.util.algorithm.support; =/Ob
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import org.rut.util.algorithm.SortUtil; DD3.el}6a
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/** g]IRv(gDh
* @author treeroot la7VeFT
* @since 2006-2-2 '~HCYE:5
* @version 1.0 7~@9=e8G
*/ ?MT
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public class ShellSort implements SortUtil.Sort{ O,`#h*{N
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/* (non-Javadoc) 2D;,'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w-%V9]J1
*/ b'9\j.By
public void sort(int[] data) { <9JI@\>
for(int i=data.length/2;i>2;i/=2){ iGxlB
for(int j=0;j insertSort(data,j,i); .E'Tfa
} CdCo+U5z{
} B{UL(6\B
insertSort(data,0,1); eI8rnp(Ia
} DQ'=$z
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/** 5OUGln5
* @param data "~R,%sYb(
* @param j &vf9Gp+MK
* @param i {9kH<,PJ;!
*/ S]E1+,-*
private void insertSort(int[] data, int start, int inc) { `0.<
int temp; Y}<w)b1e|
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); uhi(Gny.
} 8$k `bZ
} Hc`)Q vFRW
} !~+"TI}_%w
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} Aofk< O!M
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快速排序: y0!-].5UH
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package org.rut.util.algorithm.support; snPM&
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import org.rut.util.algorithm.SortUtil; .lclW0*
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/** S$ u`)BG):
* @author treeroot Wpgp YcPS
* @since 2006-2-2 bC_qoI<
* @version 1.0 O$F<x,
*/ mlq+Z#9
public class QuickSort implements SortUtil.Sort{ ;VhilWaF-
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/* (non-Javadoc) =L,s6J8_'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i2. +E&3v
*/ #2`ST=#
public void sort(int[] data) { vL>cYbJ<
quickSort(data,0,data.length-1); _[D6WY+
} +m|S7yr'
private void quickSort(int[] data,int i,int j){ -~ w5yd
int pivotIndex=(i+j)/2; _Xs(3V@'}
file://swap Q"o* \I
SortUtil.swap(data,pivotIndex,j); ,"MRA
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int k=partition(data,i-1,j,data[j]); }BTK+Tk8
SortUtil.swap(data,k,j); 0;Lt
if((k-i)>1) quickSort(data,i,k-1); s"hSn_m
if((j-k)>1) quickSort(data,k+1,j); \"L
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} /y8=r"'G
/** $1aJdZC7
* @param data PxuE(n V[
* @param i :%_*C09
* @param j >K|<hzZ
* @return :Ma=P\J
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*/ D8Ntzsr6
private int partition(int[] data, int l, int r,int pivot) { ZGILV
do{ /INjP~C
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); S511}KPbm/
SortUtil.swap(data,l,r); pD^7ZE6
} v BP
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while(l SortUtil.swap(data,l,r); Sn6cwf9.s
return l; ~3f`= r3/.
} EESGU(
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} %y7&~me
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改进后的快速排序: U*P&O+(1'
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package org.rut.util.algorithm.support; ;Jh=7wx
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import org.rut.util.algorithm.SortUtil; Z2Q'9C},m
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/** q mJ#cmN
* @author treeroot HuVx^y`
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* @since 2006-2-2 y7f,]<%e_
* @version 1.0 jN3K=
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*/ ^{<!pvT
public class ImprovedQuickSort implements SortUtil.Sort { 3shRrCL0mf
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private static int MAX_STACK_SIZE=4096; Eo\pNz#)
private static int THRESHOLD=10; )6~s;y!
/* (non-Javadoc) [h5~1N
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $-J0ou8~
*/ x9DG87P~+
public void sort(int[] data) { L1Hk[j]X|
int[] stack=new int[MAX_STACK_SIZE]; xE$>;30b_
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int top=-1; 8fI]QW
int pivot; <\44%M"iC-
int pivotIndex,l,r; 2F}D?]A
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stack[++top]=0; M0jC:*D`"
stack[++top]=data.length-1; =d+~l
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while(top>0){ `\p5!Iq
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int j=stack[top--]; U4$}8~o4
int i=stack[top--]; Jw+k=>
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pivotIndex=(i+j)/2; b0(bL_,
pivot=data[pivotIndex]; sKg
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SortUtil.swap(data,pivotIndex,j); =&_Y=>rA]0
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file://partition \!51I./Q/
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r=j; Z2t'?N|_
do{ 5WlBec@
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); %%-?~rjI
SortUtil.swap(data,l,r); =<BPoGs5
} MD4RSl<F
while(l SortUtil.swap(data,l,r); h^B~Fv>~
SortUtil.swap(data,l,j); ]QJN` ;b0
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if((l-i)>THRESHOLD){ qS9z0HLE
stack[++top]=i; (93$ L zZ
stack[++top]=l-1; b41f7t=
} IPVD^a?
if((j-l)>THRESHOLD){ Kggc9^ 7
stack[++top]=l+1; 'DhH:PR
stack[++top]=j; 'K!u}py
} 6L/`
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} su}n3NsJ
file://new InsertSort().sort(data); @cS(Bb!(M
insertSort(data); >;sz(F3)
} dED&-e#
/** vY"i^a`f
* @param data t}Q
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*/ { Mv$~T|e7
private void insertSort(int[] data) { .UGbo.e
int temp; Qi;62M
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Ya*<me>`
} -d*zgP
} nb30<h
} 0en
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} { qJ(55
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归并排序: W2w A66MB
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package org.rut.util.algorithm.support; NMvNw?]
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import org.rut.util.algorithm.SortUtil; kSfNu{YS
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/** `9`T,uJe
* @author treeroot _'}Mg7,V
* @since 2006-2-2 fG,)`[eD!_
* @version 1.0 m\.(-
*/ }8LTYn
public class MergeSort implements SortUtil.Sort{ Z.%0yS_T
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/* (non-Javadoc) y5/LH~&Ov
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Hp(wR'(g&
*/ ">M:6\B
public void sort(int[] data) { bH Nf>
int[] temp=new int[data.length]; 5OM*NT t
mergeSort(data,temp,0,data.length-1); '89nyx&W
} Gl6M(<f\5
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private void mergeSort(int[] data,int[] temp,int l,int r){ 8-s7s!j
int mid=(l+r)/2; =M ."^X
if(l==r) return ; DX(!G a
mergeSort(data,temp,l,mid); 8dUP_t~d#q
mergeSort(data,temp,mid+1,r); OnND(YiX
for(int i=l;i<=r;i++){ 2EC<8}CG
temp=data; e6i m_ Tk
} :\"V5
int i1=l; ,Zva^5
int i2=mid+1; \"|7o8
for(int cur=l;cur<=r;cur++){ vUR@P
-
if(i1==mid+1) wv.HPmq
data[cur]=temp[i2++]; Yl`)%6'5|
else if(i2>r) (&!x2M
data[cur]=temp[i1++]; (7A- cC
else if(temp[i1] data[cur]=temp[i1++]; 2hf7F";Af
else O gtrp)x9
data[cur]=temp[i2++];
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} H$k2S5,,z
} 8zrLl:{
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} E#VF7 9L
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改进后的归并排序: r:U/a=V
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package org.rut.util.algorithm.support; aflBDo1c
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import org.rut.util.algorithm.SortUtil; a^7HI,
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/** *q*$%H
* @author treeroot eE5j6`5i
* @since 2006-2-2 1xDh[:6
* @version 1.0 q+U&lw|"w
*/ !%(PN3*
public class ImprovedMergeSort implements SortUtil.Sort { Ya29t98Pk
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private static final int THRESHOLD = 10; 0gsRBy
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/* I\<)9`O
* (non-Javadoc) $6~t|[7:%Y
* P{2j31u`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hiw>Q7W
*/ b6d}<b9#
public void sort(int[] data) { 7qLB 9r
int[] temp=new int[data.length]; M-/2{F[
mergeSort(data,temp,0,data.length-1); S#b)RpY
} sf Zb$T
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private void mergeSort(int[] data, int[] temp, int l, int r) { )S^[b2P]y_
int i, j, k;
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int mid = (l + r) / 2; xp
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if (l == r) W.^R/s8O%5
return; T-y5U},
if ((mid - l) >= THRESHOLD) P*/ig0_fM
mergeSort(data, temp, l, mid); ^[.Z~>3!\q
else =\IUBH+C
insertSort(data, l, mid - l + 1); ]VoJ7LoCZ'
if ((r - mid) > THRESHOLD) "J{A}g[
mergeSort(data, temp, mid + 1, r); [8'^"
else NL-V",gI-~
insertSort(data, mid + 1, r - mid); z,g\7F[
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for (i = l; i <= mid; i++) { &HtG&RvQf
temp = data; *YP:-
} 8 Y))/]R
for (j = 1; j <= r - mid; j++) { R,`3 SW()
temp[r - j + 1] = data[j + mid]; ltlnXjRUv
} OWZ;X}x
int a = temp[l]; .RpWE.C
int b = temp[r]; >">grDX
for (i = l, j = r, k = l; k <= r; k++) { ss4YeZa
if (a < b) { hu5o{8[
data[k] = temp[i++]; kC
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a = temp; ut^6UdJ+`
} else { 6E$ET5p&