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Merge pull requestneetcode-gh#3310 from AmitSaha15/0059-spiral-matrix-ii

Create 0059-spiral-matrix-ii.java

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	`1`	`+classSolution {`
	`2`	`+publicint[][]generateMatrix(intn) {`
	`3`	`+int[][]ans =newint[n][n];`
	`4`	`+`
	`5`	`+intr1=0,r2=n-1;`
	`6`	`+intc1=0,c2=n-1;`
	`7`	`+intelem =1;`
	`8`	`+while(r2>=r1 &&c2>=c1){`
	`9`	`+for(inti=c1;i<=c2;i++){`
	`10`	`+ans[r1][i] =elem++;`
	`11`	`+ }`
	`12`	`+for(intj=r1+1;j<=r2-1;j++){`
	`13`	`+ans[j][c2] =elem++;`
	`14`	`+ }`
	`15`	`+if(r2>r1 &&c2>c1){`
	`16`	`+for (inti =c2;i >=c1;i--){`
	`17`	`+ans[r2][i] =elem++;`
	`18`	`+ }`
	`19`	`+for (intj =r2-1;j>=r1+1;j--){`
	`20`	`+ans[j][c1] =elem++;`
	`21`	`+ }`
	`22`	`+ }`
	`23`	`+r1++;`
	`24`	`+r2--;`
	`25`	`+c1++;`
	`26`	`+c2--;`
	`27`	`+ }`
	`28`	`+returnans;`
	`29`	`+ }`
	`30`	`+}`

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