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Create Check if Matrix Is X-Matrix.java

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	`1`	`+classSolution {`
	`2`	`+publicbooleancheckXMatrix(int[][]grid) {`
	`3`	`+intn =grid.length;`
	`4`	`+for (inti =0;i <n;i++) {`
	`5`	`+for (intj =0;j <n;j++) {`
	`6`	`+if (i ==j \|\|i +j ==n -1) {`
	`7`	`+if (grid[i][j] ==0) {`
	`8`	`+returnfalse;`
	`9`	`+ }`
	`10`	`+ }else {`
	`11`	`+if (grid[i][j] !=0) {`
	`12`	`+returnfalse;`
	`13`	`+ }`
	`14`	`+ }`
	`15`	`+ }`
	`16`	`+ }`
	`17`	`+returntrue;`
	`18`	`+ }`
	`19`	`+}`

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