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31 lines
876 B
HTML
31 lines
876 B
HTML
<p>Given an arithmetic equation consisting of positive integers, +, -, * and / (no paren­theses), compute the result.</p>
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<p>The expression string contains only non-negative integers, +, -, *, / operators and empty spaces . The integer division should truncate toward zero.</p>
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<p><strong>Example 1:</strong></p>
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<pre>
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<strong>Input: </strong>"3+2*2"
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<strong>Output:</strong> 7
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</pre>
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<p><strong>Example 2:</strong></p>
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<pre>
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<strong>Input:</strong> " 3/2 "
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<strong>Output:</strong> 1</pre>
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<p><strong>Example 3:</strong></p>
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<pre>
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<strong>Input:</strong> " 3+5 / 2 "
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<strong>Output:</strong> 5
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</pre>
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<p><strong>Note:</strong></p>
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<ul>
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<li>You may assume that the given expression is always valid.</li>
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<li>Do not use the eval built-in library function.</li>
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</ul>
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