Commit98245ca

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refactor 227

1 parentfd081e6 commit98245caCopy full SHA for 98245ca

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`3`	`3`	`importjava.util.ArrayDeque;`
`4`	`4`	`importjava.util.Deque;`
`5`	`5`
`6`		`-/**`
`7`		`- * 227. Basic Calculator II`
`8`		`- *`
`9`		`- * Implement a basic calculator to evaluate a simple expression string.`
`10`		`-`
`11`		`- The expression string contains only non-negative integers, +, -, *, / operators and empty spaces . The integer division should truncate toward zero.`
`12`		`-`
`13`		`- You may assume that the given expression is always valid.`
`14`		`-`
`15`		`- Some examples:`
`16`		`- "3+2*2" = 7`
`17`		`- " 3/2 " = 1`
`18`		`- " 3+5 / 2 " = 5`
`19`		`- Note: Do not use the eval built-in library function.`
`20`		`- */`
`21`	`6`	`publicclass_227 {`
`22`	`7`
`23`	`8`	`publicstaticclassSolution1 {`

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