if b[i-1] = 1
g[i] = not b[i]
else
g[i] = b[i]
要么: g = b xor (b logically right shifted 1 time) b[0] = g[0]
for other bits:
b[i] = g[i] xor b[i-1]
gray应该是一个功能。
testString: 'assert(typeof gray=="function","gray should be a function.");'
- text: 'gray(true,177)应该返回一个数字。'
testString: 'assert(typeof gray(true,177)=="number","gray(true,177) should return a number.");'
- text: 'gray(true,177)应该返回233 。'
testString: 'assert.equal(gray(true,177),233,"gray(true,177) should return 233.");'
- text: 'gray(true,425)应该返回381 。'
testString: 'assert.equal(gray(true,425),381,"gray(true,425) should return 381.");'
- text: 'gray(true,870)应该返回725 。'
testString: 'assert.equal(gray(true,870),725,"gray(true,870) should return 725.");'
- text: 'gray(false,233)应该返回177 。'
testString: 'assert.equal(gray(false,233),177,"gray(false,233) should return 177.");'
- text: 'gray(false,381)应该返回425 。'
testString: 'assert.equal(gray(false,381),425,"gray(false,381) should return 425.");'
- text: 'gray(false,725)应该返回870 。'
testString: 'assert.equal(gray(false,725),870,"gray(false,725) should return 870.");'
```