Commit8df8584

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dp bottom up lc 221 maximal square java

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	`1`	`+classSolution {`
	`2`	`+// dp bottom up`
	`3`	`+publicintmaximalSquare(char[][]matrix) {`
	`4`	`+int[][]dp =newint[matrix.length +1][matrix[0].length +1];`
	`5`	`+intmaxLen =0;`
	`6`	`+for (introw =matrix.length -1;row >=0;row--) {`
	`7`	`+for (intcol =matrix[0].length -1;col >=0;col--) {`
	`8`	`+if (matrix[row][col] =='1') {`
	`9`	`+dp[row][col] =1 +Math.min(Math.min(dp[row +1][col],dp[row][col +1]),dp[row +1][col +1]);`
	`10`	`+maxLen =Math.max(maxLen,dp[row][col]);`
	`11`	`+ }`
	`12`	`+ }`
	`13`	`+ }`
	`14`	`+`
	`15`	`+returnmaxLen *maxLen;`
	`16`	`+ }`
	`17`	`+}`

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